Devicedial

Why Is My Microphone So Quiet?

Tue, 11 Aug 2026 00:00:00 +0000

How quiet is actually too quiet?

Below −20 dBFS. That is the line the mic test draws, and it is drawn there because of what happens next rather than because the number sounds bad. A signal peaking at −20 dBFS is a tenth of full-scale amplitude, so anything downstream — a call app, a recorder, the other person’s headphones — has to add roughly 14 dB to bring you up to a comfortable level, and it adds that to your keyboard, your chair and your neighbour’s lawnmower at the same time.

Monitor Stuck at 60 Hz

Tue, 11 Aug 2026 00:00:00 +0000

Has anything actually asked for 144 Hz yet?

This is the first check because it is the most common answer. Plugging in a high-refresh monitor does not switch it to its highest mode: the display advertises what it can do, and the operating system picks a mode, which is very often the safe one. On Windows the setting lives in Settings → System → Display → Advanced display, on macOS under Displays. Set it explicitly, then re-run the refresh rate test to confirm the change reached the screen.

Dead Pixel or Stuck Pixel?

Tue, 11 Aug 2026 00:00:00 +0000

What is the difference, physically?

Each pixel on an LCD is three subpixels — red, green and blue — with a transistor behind each one deciding how much light gets through. Two things can go wrong with that arrangement, and they look opposite.

A dead pixel receives no drive at all. Its subpixels stay shut whatever the picture asks for, so against a white field it is a black dot, and against every colour it stays black. It is a hardware failure with no software remedy.

Mouse Double Clicking on One Press

Tue, 11 Aug 2026 00:00:00 +0000

What is actually happening inside the button?

A mouse button is a small mechanical switch: pressing it drives a sprung metal leaf against a contact and closes a circuit. New, that contact settles in well under a millisecond. Worn, the leaf has lost tension and the contact surface is no longer smooth, so it touches, separates, and touches again several times in the space of a few milliseconds. That is contact bounce, and in mice it is called chatter.

How Bad Is My Stick Drift?

Tue, 11 Aug 2026 00:00:00 +0000

What is the drift score measuring?

One thing only: how far a stick says it has moved when nobody is moving it.

The Gamepad API gives a web page each axis as a number between −1 and 1, where 0 is centre. Put the controller down, take your hands off it, and a healthy stick sits within a few hundredths of zero while a worn one parks somewhere out along an axis. The stick drift test samples both sticks for a few seconds, takes the largest absolute deflection it sees, and multiplies by 100. A stick resting at 0.15 scores 15.

Input Lag Chart

Tue, 11 Aug 2026 00:00:00 +0000

Refresh rate and polling rate are argued about as if they compete. They do not: they are two queues in a row, and the delay you feel is one of each. The table below is generated at build time from that arithmetic, for the nine refresh rates people actually own and the three polling rates mice actually ship with.

Frame time, mouse reports per frame and the worst-case press-to-pixel delay for nine refresh rates against the three common polling rates. Worst case is one whole polling interval plus one whole frame; it covers the input and display path only, not the game, the cable or the panel’s own response time.
Refresh rate	Frame time	Mouse reports per frame			Worst case press to pixel
Refresh rate	Frame time	125 Hz	500 Hz	1000 Hz	125 Hz	500 Hz	1000 Hz
30 Hz	33.3 ms	4.2	16.7	33.3	41.3 ms	35.3 ms	34.3 ms
60 Hz	16.7 ms	2.1	8.3	16.7	24.7 ms	18.7 ms	17.7 ms
75 Hz	13.3 ms	1.7	6.7	13.3	21.3 ms	15.3 ms	14.3 ms
90 Hz	11.1 ms	1.4	5.6	11.1	19.1 ms	13.1 ms	12.1 ms
120 Hz	8.3 ms	1.0	4.2	8.3	16.3 ms	10.3 ms	9.3 ms
144 Hz	6.9 ms	0.9	3.5	6.9	14.9 ms	8.9 ms	7.9 ms
165 Hz	6.1 ms	0.8	3.0	6.1	14.1 ms	8.1 ms	7.1 ms
240 Hz	4.2 ms	0.5	2.1	4.2	12.2 ms	6.2 ms	5.2 ms
360 Hz	2.8 ms	0.3	1.4	2.8	10.8 ms	4.8 ms	3.8 ms

What does the worst case actually mean?

It means both queues went against you at once. A press that lands one microsecond after the mouse has sent its report waits a full polling interval — 8 ms on a 125 Hz mouse, 1 ms on a 1000 Hz one. The frame built from that report can then be finished one microsecond after the display has started drawing, so it waits a full frame as well.

About

Tue, 11 Aug 2026 00:00:00 +0000

Devicedial answers one kind of question: is this thing actually working properly? The microphone, the camera, the keyboard, the mouse, the controller, the screen. Each gets its own test, and each test ends in a number with a unit — not a tick.

Why it exists

There is no shortage of device testers. There is a shortage of ones that tell you anything. Type “mic test” into a search engine and most of what comes back draws a moving bar and says “your microphone is working” — which is true of a microphone recording you 14 dB too quietly, and true of a mouse reporting at a fifth of its advertised rate.

Aim Trainer

Tue, 11 Aug 2026 00:00:00 +0000

Targets per minute is easier to judge once it is turned back into seconds, because seconds are the unit the run actually feels like. The table converts the rate into time per target and into how long a 30 target run takes at that pace.

Targets per minute	Time per target	30 targets take
20	3.00 s	1:30
30	2.00 s	1:00
40	1.50 s	45 s
50	1.20 s	36 s
60	1.00 s	30 s
80	0.75 s	23 s
100	0.60 s	18 s

Accuracy is the half of the score people drop when they quote it: 40 targets a minute at 95% is a better run than 55 at 70%, because every miss is a click that would have hit nothing anywhere else either. The reaction time test isolates the timing half of the same reflex, the CPS test the clicking half, and the refresh rate test tells you how often the screen is really redrawing the targets you are chasing.

Audio Test

Tue, 11 Aug 2026 00:00:00 +0000

Both numbers are read from the output your browser is using right now, so they change when you change device — plug in a headset and run the test again rather than trusting what was true a minute ago.

Reported rate	Where it comes from	What it tells you
8 000–16 000 Hz	Bluetooth hands-free profile	A microphone is open somewhere; stereo is gone until it closes
32 000 Hz	Older voice hardware and some virtual devices	Usable, but the top of the range is already cut
44 100 Hz	The CD rate, still common on music-first setups	Normal; the ceiling is 22 050 Hz
48 000 Hz	The default on most systems and all video	Normal; the ceiling is 24 000 Hz
96 000–192 000 Hz	A USB interface or DAC set high	Normal for that hardware, and inaudibly different from 48 000 Hz

Channels accepted	What it means
1	Mono: a hands-free profile, a phone-style device, or a mono accessibility setting
2	Stereo, including every virtual surround mode
6	A 5.1 chain the browser can address
8	A 7.1 chain the browser can address

This page is about the format leaving your machine, not about which speaker is silent. When one side plays and the other does not, that is the speaker test, and on a headset the headphone test adds the polarity check. When the count comes back at two on a system that should manage six, surround sound test works through the reasons. To hold one frequency at a level you choose rather than a fixed test tone, use the tone generator; to hear where the output rolls off at each end, run the frequency test. Input is the opposite direction entirely and belongs to the mic test.

Bass Test

Tue, 11 Aug 2026 00:00:00 +0000

The lowest clean tone places your system in a category, and the categories are wide apart. Compare against the hardware you own rather than against someone else’s result.

Lowest clean tone	What that usually is	What to expect from it
150–250 Hz	Phone speakers, conference pucks, most tablets	Voice reproduces fine; music has no foundation at all
90–150 Hz	Laptop speakers	Bass is implied by harmonics rather than played
60–90 Hz	Monitor speakers, small soundbars, cheap 2.1 sets	Kick drums arrive; the lowest bass notes do not
40–60 Hz	Good bookshelf speakers and larger soundbars	Full-range enough that most people stop noticing what is missing
30–40 Hz	A real subwoofer, or a large floorstanding pair	The bottom octave of most music is genuinely present
20–30 Hz	A capable subwoofer	More felt than heard, which is the correct experience

Everything here is the output side, and the low end specifically. If a tone is missing on one channel rather than at one frequency, that is routing and belongs to the speaker test or, on a pair of headphones, the headphone test. The mirror image of this page is the hearing test, which finds the top of the range where the listener usually is the limit; the frequency test covers both ends in one sweep and shows the gaps between them. To sit on one frequency and change it by hand while you move a speaker or hold a rattling panel, use the tone generator. If a subwoofer is connected but silent, check first that the browser can even address that channel with the surround sound test.

Camera Test

Tue, 11 Aug 2026 00:00:00 +0000

Compare what the test reports against what the camera was sold as. One step below the hardware maximum is normal, because the browser asks for something reasonable and the camera answers; two steps below usually means bandwidth, light, or a driver falling back.

Stream	Pixels	Frame rate to expect	Notes
640×480	0.3 MP	30 fps	Fallback mode and older built-in cameras; soft on anything larger than a thumbnail
1280×720	0.9 MP	30 fps	What most laptop cameras and most calls actually use
1920×1080	2.1 MP	30 fps, 60 on a few models	The usual maximum on webcams sold as 1080p
2560×1440	3.7 MP	30 fps	Uncommon, and frequently scaled back down by the calling application
3840×2160	8.3 MP	30 fps or less	4K webcams; needs USB 3 and good light to hold the rate

Permission is granted per device, so a camera blocked while audio works points at a device setting rather than at the site — the mic test is the fastest way to confirm which. If the picture is fine but you cannot hear the other side, the fault is on the output chain, which the speaker test and the headphone test cover.

Contact

Tue, 11 Aug 2026 00:00:00 +0000

Questions, suggestions or corrections? Email us:

info@devicedial.com

We usually reply within a few working days.

Who you are writing to

Operated by: maicrosites.com
Established in: Slovakia, European Union
Email: info@devicedial.com
Site: devicedial.com

One person reads this address, so please put what you need in the first message rather than asking whether you may ask. Replies come within a few working days; complaints get an answer within 14 days, and how a complaint escalates if we cannot settle it is set out in the terms of use.

CPS Test

Tue, 11 Aug 2026 00:00:00 +0000

The bands below turn clicks per second into the gap between presses, which is the number that decides whether a technique is physically available to you at all. Nothing in the browser or the mouse is straining at any of these rates: a 1000 Hz mouse samples its buttons a thousand times a second, more than forty times as often as the fastest row requires.

Clicks per second	Gap between presses	Usually produced by
3–5	200–333 ms	ordinary clicking, one finger
6–8	125–167 ms	a deliberate fast tap
9–12	83–111 ms	jitter clicking, using arm tension
13–20	50–77 ms	butterfly clicking, two fingers alternating
21 and up	under 48 ms	drag clicking, which depends on the switch

A click count says nothing about timing or placement, so it pairs badly with the two tests people usually take next: the reaction time test measures how quickly you start, and the aim trainer measures whether the clicks land on anything. If you want to know whether your mouse really reports at the rate printed on the box, that is the polling rate test.

Dead Pixel Test

Tue, 11 Aug 2026 00:00:00 +0000

Each field is chosen for one job, and the order is deliberate. Work through them slowly, from about half an arm’s length, and look at the corners rather than the middle.

Field	Hex	What it exposes
White	`#ffffff`	dead pixels as black dots; also every smear and speck of dust
Black	`#000000`	stuck pixels as bright dots; backlight bleed and clouding at the edges
Red	`#ff0000`	a dead red subpixel — the pixel sits black while the field is lit
Green	`#00ff00`	a dead green subpixel
Blue	`#0000ff`	a dead blue subpixel
Cyan	`#00ffff`	a red subpixel stuck on — it shows as a white dot
Magenta	`#ff00ff`	a green subpixel stuck on
Yellow	`#ffff00`	a blue subpixel stuck on
Gray	`#808080`	panel uniformity, clouding and anything still on the glass

A fault that appears on exactly one primary is a single subpixel, which is the most common defect and the least visible in normal use. A dot black on all three is a whole dead pixel.

Double Click Test

Tue, 11 Aug 2026 00:00:00 +0000

The whole diagnosis is one measurement: how long between the two presses. Human intent and switch bounce live in completely different parts of the scale, which is what makes the fault provable rather than a matter of opinion.

Gap between two press edges	What it is
Under 1 ms	usually swallowed by the mouse firmware; the page never sees it
1–25 ms	switch chatter, far faster than any hand
25–50 ms	still chatter, and where this test’s threshold sits
50–100 ms	physically possible on purpose, rare in ordinary use
100–500 ms	a deliberate double click; Windows accepts up to 500 ms by default
Over 500 ms	two separate single clicks

Note the gap in the middle of the scale. Between roughly 25 and 100 milliseconds almost nothing happens on a healthy mouse, and that empty band is what lets a 50 millisecond threshold separate the two causes cleanly.

Echo Test

Tue, 11 Aug 2026 00:00:00 +0000

Playback is a diagnosis, not a verdict. Almost every complaint people get about their audio maps to one of the sounds below, and each has a different fix — which is why hearing the recording is worth more than reading a specification.

What the playback sounds like	What it usually is	What to change
Hollow, with a tail after each word	Reflections off bare walls, glass and a hard desk	Get closer to the mic; add soft surfaces behind you
A steady hiss under the voice	Gain raised to compensate for distance	Halve the distance instead: 40 cm to 20 cm adds about 6 dB of voice and no hiss
Thumps and key clicks	A built-in array picking the chassis up through the case	A headset or external mic; type between sentences, not through them
Your voice quieter than the room	Distance, plus a fan or an open window	Move the microphone first, then the noise source
Clean but boxy and nasal	Beamforming and noise suppression in a laptop array	Nothing on the laptop — this is the array’s tuning, not a fault
A rising squeal	The microphone is hearing the speakers	Headphones, or lower the playback volume

Once the recording sounds right, the number behind it is on the mic test, which shows the peak level in dBFS and the band it should land in. If the playback itself is what sounds wrong rather than the capture, the fault is on the output side — the speaker test and the headphone test separate those.

Free and Pro

Tue, 11 Aug 2026 00:00:00 +0000

Everything that calculates here is free and always will be — no account, no sign-up, no limits on how often you use it. That is not a trial. Search engines send people here to get an answer, and an answer behind a wall is not an answer.

Pro is for what happens around the answer. It remembers your setups on every device you sign in on, turns any result into a page you can send someone, lets you put a tool on your own site, emails you when a date you care about is coming, and takes the ads off every site we run — with one account and one price.

Frequency Test

Tue, 11 Aug 2026 00:00:00 +0000

The interesting part of a sweep is rarely the two ends. Note where anything changes and the table below will usually name it.

What you hear during the sweep	What it usually is	Where to go next
Nothing until well above 100 Hz	The speakers cannot reach lower, which is normal for laptops and phones	Bass test puts a figure on the low limit
A buzz or rattle over a narrow band	A resonating object, not the driver	Hold the panel or move the speaker while the sweep runs
A dip in the 2–4 kHz region	A crossover handover, or something covering the driver	Move the speaker off the desk or take the grille off
A note that vanishes at one seat only	A null caused by reflections in the room	Move your head; if it follows you, it was the room
A sudden stop somewhere above 8 kHz	A Bluetooth voice profile, not your hearing	Close whatever opened the microphone; check the audio test
A gradual fade between 12 and 17 kHz	The ordinary top end of ears and drivers together	Hearing test reports that limit as a number

The other pages in this group each take one slice of what a sweep shows. The hearing test reports only the top end, the bass test only the bottom, and the tone generator holds one frequency still so you can walk around the room with it. Routing is a different question again: when a whole channel is missing rather than a band, use the speaker test, the headphone test or, for more than two channels, the surround sound test. The full group sits under tones and hearing.

Gamepad Tester

Tue, 11 Aug 2026 00:00:00 +0000

The index numbers on screen are not arbitrary. A controller the browser recognizes is reported in the Standard Gamepad mapping, which fixes what every position means regardless of what is printed on the buttons. This is that map.

Index	Standard Gamepad control	Xbox label	PlayStation label
0	Bottom face button	A	Cross
1	Right face button	B	Circle
2	Left face button	X	Square
3	Top face button	Y	Triangle
4	Left shoulder	LB	L1
5	Right shoulder	RB	R1
6	Left trigger (analog)	LT	L2
7	Right trigger (analog)	RT	R2
8	Select / back	View	Create
9	Start	Menu	Options
10	Left stick press	LS	L3
11	Right stick press	RS	R3
12	D-pad up	—	—
13	D-pad down	—	—
14	D-pad left	—	—
15	D-pad right	—	—
16	Guide / home	Xbox button	PS button

Index 16 is optional and several browsers withhold it, so a home button that never lights up here is usually the browser, not the pad. Everything from 0 to 15 should respond on a working controller.

Gear Test Schedule

Tue, 11 Aug 2026 00:00:00 +0000

Set the interval once and get the next twelve dates for the tests that catch a fault early — with an email a few days before each one, if you want it.

Headphone Test

Tue, 11 Aug 2026 00:00:00 +0000

Run the checks in order and stop at the first result that surprises you, because each one clears a different part of the chain between the browser and the drivers.

What you hear	What it means	Where to look
Left on the left, right on the right	Routing is correct end to end	Nothing to fix
Channels swapped	Something between the application and the drivers reverses them	A reversed extension cable, a virtual surround mode, or the pair worn back to front
One side silent	That channel never reaches the driver	Push the plug fully home, try another jack, flex the cable near the plug
One side quieter	Balance, or a partly blocked driver	The balance slider first, then the mesh over the quieter side
Both sides play, but nothing will sit in the centre	Polarity error on one channel	The cable or adapter, rather than the headphones
Muffled and thin on both sides	Mono hands-free profile on a wireless headset	Release the headset microphone, or select the stereo output device

A headset has two halves and they fail separately: when people say you sound distant while your own ears are perfectly happy, the problem is on the input side and belongs to the mic test. Speakers follow the same left-right convention on different hardware, which the speaker test covers.

Headset and Mic Comparison

Tue, 11 Aug 2026 00:00:00 +0000

Two or three microphones side by side with the peak and the background noise you measured, and the gap between them in decibels for each one.

Hearing Test

Tue, 11 Aug 2026 00:00:00 +0000

Before reading anything into a result, work out which link in the chain stopped first. The table below is about the equipment, because on ordinary hardware the equipment is usually the limit.

Where the tone disappeared	The first thing to suspect	Why
Below 8 kHz	The playback device, almost certainly	Phone speakers, laptop speakers and Bluetooth voice profiles all roll off around here; repeat on wired headphones before concluding anything
8–12 kHz	The device, then the room	Small drivers thin out at the top and background noise masks quiet high tones long before they become inaudible
12–15 kHz	Ordinary for an adult on ordinary equipment	Sensitivity at the top of the range declines gradually through adult life in most people
15–17 kHz	Both the ears and the gear are doing well	Many consumer devices cannot reproduce this cleanly at all
Above 17 kHz	Unusually capable equipment, and a listener to match	Worth repeating: a rushed button press can add a step that was never heard
Nothing at any frequency	The output, not the ears	Wrong device selected, muted output, or a hands-free profile — the audio test settles it in one reading

The neighbouring tests answer questions this one does not. The frequency test sweeps the whole range in a single pass and gives both ends at once, which is the faster way to spot a gap in the middle; the bass test does the same work at the bottom, where the limit is nearly always the speaker rather than the listener. If you want to hold one frequency and change it by hand — the 17 kHz tone, for instance — that is the tone generator. And if a tone is missing on one side only, the problem is routing rather than hearing: headphone test and speaker test cover that, and the whole group is listed under tones and hearing.

Input Lag Budget

Tue, 11 Aug 2026 00:00:00 +0000

Every wait between your hand and the screen on one sheet — polling interval, frame time, panel response, render queue — added into one worst-case figure in ms.

Keyboard Tester

Tue, 11 Aug 2026 00:00:00 +0000

Rollover is the number people argue about without ever measuring it. The table below is what each tier does when you actually hold the keys down, and the only column that matters is the one your board lands in.

Keys held at once	2KRO membrane	6KRO standard USB report	NKRO
Two, plus Ctrl, Shift and Alt	all register	all register	all register
Three in the same matrix block	third is dropped	all register	all register
Four to six ordinary keys	dropped	all register	all register
Seven ordinary keys	dropped	seventh is dropped	all register
Ten fingers down at once	dropped	six survive	all register

The modifier row is the one that surprises people. Ctrl, Shift, Alt and the Windows key ride in a separate byte of the report and never occupy one of the six slots, so Ctrl+Shift+W+A+S+D is six keys to a hand and four to the protocol.

Mic Test

Tue, 11 Aug 2026 00:00:00 +0000

A reading is only useful once you know which band it belongs in. The scale runs downward from 0 dBFS at the digital ceiling, so every number below it is negative and −6 dBFS is louder than −20 dBFS, not quieter.

Peak while speaking	What it means	What to change
0 dBFS	Clipping — the loudest syllables are cut flat	Lower the input gain until peaks stay under −6 dBFS
−6 to −1 dBFS	Hot, but intact	Leave more headroom for laughter and raised voices
−12 to −6 dBFS	The band you want for speech	Nothing
−20 to −12 dBFS	Usable but quiet	Move to 15–20 cm, or raise the gain one step
−40 to −20 dBFS	Too quiet; noise rises with every step of gain	Confirm the right device is selected, then raise the level
Below −50 dBFS while speaking	Effectively silence	Wrong input, a hardware mute switch, or exclusive mode

Permission is granted per device, so a browser can hold the microphone and still be blocked from the camera — the camera test settles which of the two it is. For the other half of a call, the output side is covered by the speaker test and the headphone test.

Mouse Tester

Tue, 11 Aug 2026 00:00:00 +0000

A web page sees five standard buttons and no more, each with a number the specification fixes and a bit in the mask of buttons currently held. Three of the five come with a default action attached, and that is the whole reason a mouse test has to ask for them.

Button	Event number	Bit in the held mask	Default action the test suppresses
Left, primary	0	1	none, nothing to suppress
Middle, wheel click	1	4	autoscroll on Windows, paste on Linux
Right, secondary	2	2	opens the context menu
Side back, X1	3	8	navigates history back
Side forward, X2	4	16	navigates history forward

The mask is why both columns exist. Press left and right together and the event number reports only the button that just moved, while the mask reads 3 and reports that both are held — which is how a button stuck down is caught without it ever firing an event of its own.

New Machine Test Plan

Tue, 11 Aug 2026 00:00:00 +0000

A target for every check, your own reading beside it, and a count of how many the machine actually met — run it while the return window is still open.

Polling Rate Test

Tue, 11 Aug 2026 00:00:00 +0000

Polling rate and refresh rate are the same kind of number pointed at different hardware, so the useful question is how many reports arrive between two frames. The table below works that out for the three screens most people are sitting in front of.

Polling rate	Gap between reports	Reports per frame at 60 Hz	at 144 Hz	at 240 Hz
125 Hz	8 ms	2.1	0.9	0.5
250 Hz	4 ms	4.2	1.7	1.0
500 Hz	2 ms	8.3	3.5	2.1
1000 Hz	1 ms	16.7	6.9	4.2
2000 Hz	0.5 ms	33.3	13.9	8.3
8000 Hz	0.125 ms	133.3	55.6	33.3

Read the 144 Hz column at 125 Hz polling: fewer than one report per frame, which means some frames are drawn with no new mouse position at all. That single row is the argument for leaving 125 Hz behind, and it is a far stronger one than anything above 1000 Hz.

Privacy Policy

Tue, 11 Aug 2026 00:00:00 +0000

Who is responsible for your data

Operated by: maicrosites.com
Established in: Slovakia, European Union
Email: info@devicedial.com
Site: devicedial.com

There is no data protection officer. The site is run by one person and meets none of the conditions in Article 37 GDPR that would require one, so the address above reaches the person who actually decides what happens to your data — not a queue.

What we process

The tools run entirely in your browser — your inputs are never sent anywhere.

Reaction Time Test

Tue, 11 Aug 2026 00:00:00 +0000

A reaction test cannot separate you from the screen in front of you, but frame time arithmetic says how much of the result belongs to each. A display shows one frame at a time, so a target that becomes visible has waited on average half a frame to be lit — before the mouse has done anything at all.

Display	Frame time	Average wait to be lit	Worst case
60 Hz	16.7 ms	8.3 ms	16.7 ms
75 Hz	13.3 ms	6.7 ms	13.3 ms
120 Hz	8.3 ms	4.2 ms	8.3 ms
144 Hz	6.9 ms	3.5 ms	6.9 ms
240 Hz	4.2 ms	2.1 ms	4.2 ms

Between a 60 Hz laptop and a 240 Hz monitor that is about 6 ms on average and 12 ms at worst, which is roughly a quarter of the 26 ms that the same research attributes to ageing from 18 to 65. Measure the panel you are actually sitting at with the refresh rate test, the mouse half of the chain with the polling rate test, and the pointing side of the same reflex with the aim trainer.

Refresh Rate Test

Tue, 11 Aug 2026 00:00:00 +0000

The measured figure means more next to its frame time, because that is the unit input lag is counted in. Each row is 1000 divided by the rate, and the last column is what the step from 60 Hz is really worth.

Refresh rate	Frame time	Saved against 60 Hz
60 Hz	16.67 ms	—
75 Hz	13.33 ms	3.3 ms
90 Hz	11.11 ms	5.6 ms
120 Hz	8.33 ms	8.3 ms
144 Hz	6.94 ms	9.7 ms
165 Hz	6.06 ms	10.6 ms
240 Hz	4.17 ms	12.5 ms
360 Hz	2.78 ms	13.9 ms

Half of everything a faster panel can give you is already spent by 120 Hz. The whole distance from 144 to 360 Hz is 4.2 ms, which is less than the step from 60 to 90.

Refunds and withdrawal

Tue, 11 Aug 2026 00:00:00 +0000

Last updated 2026-08-11.

The short version

You have 14 days from buying Pro to change your mind and get your money back. Press Withdraw from contract on your account page. We confirm by email straight away and the refund goes back to the payment method you used, within 14 days of that email.

You do not need a reason, and we do not ask you to give one up.

Your right of withdrawal

If you are a consumer in the EU, you have a statutory right to withdraw from this contract within 14 days without giving any reason. The period ends 14 days after the day the contract was concluded — that is, 14 days after you bought Pro.

Screen Resolution

Tue, 11 Aug 2026 00:00:00 +0000

The same panel reports different numbers depending on how the system is scaling it. These are the combinations most people are actually sitting in front of.

Display	Scaling	Reported (CSS px)	Ratio	Physical px
1080p monitor	100%	1920 × 1080	1	1920 × 1080
1440p monitor	100%	2560 × 1440	1	2560 × 1440
1440p monitor	150%	1707 × 960	1.5	2560 × 1440
4K monitor	150%	2560 × 1440	1.5	3840 × 2160
4K monitor	200%	1920 × 1080	2	3840 × 2160
MacBook Pro 14	default	1512 × 982	2	3024 × 1964
iPhone, 6.1 inch	—	393 × 852	3	1179 × 2556
iPad, 10.9 inch	—	820 × 1180	2	1640 × 2360

Two rows in that table report 2560 × 1440 and mean completely different hardware: one is a 1440p panel at 100 percent, the other a 4K panel at 150 percent with four times as many real pixels behind it. That is the whole reason the ratio is worth reading.

Speaker Test

Tue, 11 Aug 2026 00:00:00 +0000

Work upward through the frequencies, one channel at a time. Which tones you cannot hear says more than whether sound comes out at all, because each one fails for its own reason.

Tone	What it checks	If it is missing
100 Hz	Bass output, and cabinet or desk rattle	Normal on laptop and monitor speakers; a fault on a system with a subwoofer
250 Hz	Lower voice range and warmth	Look at bass redirection and any “small speakers” setting
440 Hz	Reference pitch; the easiest tone to judge level on	Missing on one side means that side is receiving nothing
1 kHz	The middle of speech and the standard reference tone	A dead 1 kHz channel is a genuine fault, not a speaker limitation
4 kHz	Consonants and clarity, and where harshness shows up	Muffled here usually means an obstruction or a failed tweeter
8 kHz	Cymbals, sibilance, the sense of air	Often quiet on small drivers; compare the two sides
12 kHz	The top end	Frequently inaudible for innocent reasons — check both channels before blaming hardware

If the tones are correct through speakers but wrong through a headset, the split is at the output device: the headphone test checks channels and polarity on the plugged-in pair. When the complaint is that people cannot hear you rather than the other way round, that belongs to the mic test.

Stick Drift Test

Tue, 11 Aug 2026 00:00:00 +0000

The score is on the same 0 to 100 scale as the deadzone sliders in most games, so it can be read against them directly. This is what each band means in play.

Drift score	Resting offset	What you notice in a game	What to do
0–5	under 0.05	nothing at all	healthy stick
6–20	0.06 to 0.20	hidden by a standard deadzone	retest in a month
21–35	0.21 to 0.35	slow camera creep, menu cursor walks	raise the in-game deadzone above your score
36–50	0.36 to 0.50	constant creep, aim pulls one way	clean or replace the module
over 50	over 0.50	the game reads the stick as held	replace the module

One caveat worth knowing: a score of exactly 0 on a stick you are certain drifts means the offset is smaller than the controller’s own firmware deadzone, not that it has gone away.

Stream Check Sheet

Tue, 11 Aug 2026 00:00:00 +0000

Every source you are sending — camera, screen share, audio — turned into megabits a second, added up, with headroom and the size of a two-hour stream.

Surround Sound Test

Tue, 11 Aug 2026 00:00:00 +0000

Start with the count, because it decides whether anything else is worth investigating.

Channels accepted	What it means	What to do next
1	Mono — a hands-free profile or a mono accessibility setting	Close whatever holds the microphone; check the mono audio switch
2	Stereo, including all virtual surround	Correct for headphones; on a home cinema chain, look at the configured layout, the cable and the default device
6	A 5.1 chain the browser can address	Play each channel in turn and confirm the position of every speaker
8	A 7.1 chain the browser can address	Same, plus the rear pair — the most commonly miswired speakers in the layout

The tone belongs to the channel, so what you are checking is the map rather than the sound quality. Three faults show up here and nowhere else: a surround speaker connected but never addressed, a pair swapped left for right behind the sofa, and a subwoofer that stays silent because the layout sends it nothing.

Terms of use

Tue, 11 Aug 2026 00:00:00 +0000

Last updated 2026-08-11.

These terms cover devicedial.com (“the site”). Using the site means you accept them. If you buy Pro, the Pro section below is part of your contract.

Who you are dealing with

Operated by: maicrosites.com
Established in: Slovakia, European Union
Email: info@devicedial.com
Site: devicedial.com

1. What the site is

Devicedial is a set of calculators and reference pages. Everything that calculates runs in your browser and is free to use, with no account.

Tone Generator

Tue, 11 Aug 2026 00:00:00 +0000

If you are hunting a specific problem rather than exploring, these are the frequencies worth typing first, and what each one is good for.

Frequency	What lives there	What it is useful for
20–60 Hz	Sub-bass; felt more than heard	Finding whether a subwoofer is doing anything at all
60–150 Hz	Bass fundamentals, and most cabinet resonance	Making a desk, a panel or a loose screw give itself away
150–400 Hz	The body of a voice	Judging boxiness in a laptop or a conference speaker
440 Hz	Concert A, the reference musicians tune to	Comparing two devices by ear on neutral ground
1 kHz	The standard reference tone in audio engineering	Setting levels; a dead 1 kHz channel is a genuine fault
2–4 kHz	Consonants, and the peak of human sensitivity	Checking clarity, and hearing harshness for what it is
8–12 kHz	Air and cymbals	Comparing the two channels of a pair against each other
15–18 kHz	The region that fades first with age	Curiosity, with the caveat that speakers fade here too

Fixed test tones already exist elsewhere on this site, and they answer different questions. The speaker test plays seven set frequencies one channel at a time because its subject is routing, not pitch, and the headphone test adds polarity. This page hands you the dial instead. To sweep the whole range in one pass rather than stepping through it, use the frequency test; to push downward until the tone disappears, the bass test does that with the level held steady, and the hearing test does the same at the top of the range. If what you actually need is the format your machine is sending, that is the audio test.

Touch Screen Test

Tue, 11 Aug 2026 00:00:00 +0000

Half of what a touch screen reports is a default value standing in for hardware that is not there. These are the readings you will see and what each one is actually telling you.

Reading	Typical value	What it tells you
Simultaneous pointers	5 on phones, 10 on Windows	the panel and driver limit, not a fault
`pressure` while touching	exactly 0.50	no force sensor — this is the fixed default
`pressure` varying	0.05 to 1.00	real force reporting, usually a pen
`pressure` mid-stroke	0.00	contact was lost, or the pointer is hovering
`width` × `height`	1 × 1	contact geometry not measured by the device
`width` × `height`	20 × 25	the contact patch in CSS pixels, grows as you press
`pointerType`	touch, pen or mouse	which input really generated the event

A screen that reports a flat 0.50 and a 1 by 1 contact box is not broken. It is a perfectly ordinary capacitive panel that reports position only, which is all the vast majority of them do.

Typing Test

Tue, 11 Aug 2026 00:00:00 +0000

Words per minute is a character count wearing a friendlier name, so it converts cleanly into the figures that actually describe the work. The right-hand column is the honest part: the bands are wide and the boundaries are soft.

WPM	Characters per minute	Characters per second	Typical of
20	100	1.7	hunt and peck, eyes on the keys
40	200	3.3	most people who type every day
60	300	5.0	touch typing without looking down
75	375	6.3	transcription and data entry work
100	500	8.3	roughly the top few per cent
120	600	10.0	competitive typing

One more figure worth keeping: at 60 WPM a single keystroke takes 200 milliseconds, so a backspace and a retype cost 0.4 seconds. That is the entire price of fixing an error as you go.

Warranty Claim Log

Tue, 11 Aug 2026 00:00:00 +0000

A dated row for every reading, the limit it should have stayed inside, and a running count of how many went past it — evidence instead of a description.

Webcam Mirror

Tue, 11 Aug 2026 00:00:00 +0000

A mirror shows you the room’s light as much as your face, and a camera reacts to that light in ways glass does not. Where the light comes from changes both what you see and what the camera does to keep up.

Where the light is	What you see in the mirror	What the camera does about it
A window in front of you	Even light, accurate colour, sharp detail	Short exposure, full frame rate
A ceiling lamp only	Shadows under the eyes, nose and chin	Slightly longer exposure; the colour warms up
A window or lamp behind you	Your face as a silhouette	Meters for the bright area, so the face goes dark
The screen as the only light	A cool, blue-tinted face with visible grain	Exposure passes 1/30 s, so the rate falls towards 15 fps
Daylight and a warm lamp together	Uneven colour across the face	White balance settles on one source and gets the other wrong

If the picture is worse than you expect for reasons the light does not explain, the numbers underneath it are on the camera test, which reports the resolution and frame rate the camera actually agreed to. For the audio half of the same device, start at the mic test.