How do you tell what quality a voice memo was recorded at?

This comes up once a library has some history to it. The quality setting got changed at some point — maybe on purpose, maybe by accident while tapping through settings — and now there is a folder of recordings with no way to tell, just by looking at the list, which ones came from before the change and which came from after. It is a reasonable thing to want to know, whether the reason is curiosity, deciding what is safe to re-record, or just understanding why one file is bigger than another of the same length.

Why there is no label to check

A quality setting like standard, high or ultra is not a property the app remembers about a recording the way a title or a date is. It is an instruction for how to capture the next file — what sample rate to run while the microphone signal is being measured — and that instruction is used exactly once, at the moment you press record. Once the file is written, the sample rate is not sitting next to it as a caption the app could reread later; it is baked into the audio data itself, the same way a photo's resolution is a property of the image rather than a note kept alongside it. There is nothing left for a details screen to display, because the setting already did its one job and is gone.

That is also why a library can hold recordings made at different tiers side by side without anything looking broken. Each file simply carries whatever sample rate was active on the day it was made, and nothing about the app treats that as missing information — playback, search and transcription do not need to know the tier to do their job, so nothing was ever built to surface it.

The rough way: compare it to a fresh reference

You cannot look up a fixed number of megabytes per minute for a given tier, because AAC is a compressed format and how compact it comes out depends on what was actually recorded, not just the sample rate. What you can do is build your own reference, today, on the same phone: record a short clip — a minute or two of ordinary talking, not silence — at each of the three settings, and check each file's size in the Files app or the share sheet. Divide each one by its length in minutes and you have three numbers, one per tier, that are actually about your phone rather than borrowed from somewhere else.

Do the same division for the recording you are trying to identify — its size divided by its length — and see which of the three fresh numbers it lands closest to. This will not be exact, because the old recording was not the same speech as today's test clip, but the gap between 22.05 kHz, 44.1 kHz and 48 kHz is wide enough that a recording made at standard rarely lands anywhere near one made at ultra. It is a comparison, not a measurement, and it is usually enough to sort a mixed library into "probably standard" and "probably not."

The exact way: read the file's actual sample rate

For a definite answer rather than a closest guess, the sample rate is not hidden — it is simply not something iOS itself displays anywhere in the Files app. Export the recording as its original .m4a and open it on a computer, in a media player or file inspector that shows audio format details rather than just a filename and a size. That kind of tool reads the number directly out of the file and states it plainly, usually as a figure in Hz right next to the codec name.

Once you have that number, the mapping back to a tier is exact rather than approximate: 22,050 Hz is standard, 44,100 Hz is high, and 48,000 Hz is ultra. There is no ambiguity here the way there is with file size, because the sample rate is not an estimate of anything — it is the literal value the recording was captured at, unchanged by exporting, sharing or moving the file anywhere.

Why this is rarely worth chasing down

It is worth being honest about what the answer actually buys you once you have it. The tier a recording was made at has no bearing on whether it transcribes well, how it sounds on playback, or whether it turns up in a search — all of that behaves identically across standard, high and ultra, because none of them touch anything except how finely the signal was measured going in. And a recording found to be standard cannot be upgraded to high or ultra after the fact in any way that adds real detail; resampling it up only interpolates between points that already exist, without recovering anything the original capture never measured. So identifying the tier is closer to satisfying curiosity or auditing what is taking up space than to fixing anything, and that is fine — not every question needs a practical consequence to be worth answering.

How Voice Studio handles it

Voice Studio does not show a per-recording quality label anywhere in the app, for the reason above: the setting is applied once, at capture, and nothing about playback, search or transcription needs to know it afterward to work correctly. Both methods above work exactly as described, because the app never re-encodes a file after the fact — sharing or exporting a recording hands over the identical .m4a it was recorded as, sample rate and all, so a computer reading that file sees the real, original value rather than anything altered on the way out. The quality setting itself is free to change at any point, is not held back for Pro, and only ever applies to whatever you record next.

Common questions

Does Voice Studio show which quality setting a recording was made at?

No, there is no label for it anywhere in the app. The sample rate is baked into the file at the moment it is recorded rather than stored as a separate note the app could display later.

Can I tell the quality tier just by listening to the recording?

Not reliably, and not at all for speech. The differences between standard, high and ultra sit in frequency range well above what a spoken voice needs, so the tiers sound the same on ordinary playback.

What is the fastest way to get a rough idea?

Record a short fresh clip at each of the three settings today, divide each file's size by its length in minutes, and compare those three numbers to the same calculation for the recording in question. The tier it lands closest to is usually the right one.

How do I find the exact answer instead of a guess?

Export the recording as its original .m4a and open it on a computer in a tool that shows audio format details. The sample rate it reports maps directly to a tier: 22,050 Hz is standard, 44,100 Hz is high, 48,000 Hz is ultra.