WAV в MP3
Длительность-
Частота-
Каналы-
Размер файла-
MP3 создаётся локально в браузере. Первый запуск может подгрузить клиентский энкодер.
Tool guide
A recorded interview or a demo in WAV outgrows attachment limits fast: Gmail stops at 25 MB and free Discord at 20. MP3 cuts the size by roughly ten times while staying playable everywhere. The encoding runs in a script on your own device, the source WAV is never uploaded, and the MP3 to WAV tool covers the trip back to raw PCM. See also: when the source came off a phone as M4A, OGG output for sound on a web page, get an MP3 track straight out of a video.
Expect roughly a tenfold drop: a minute of 44.1 kHz stereo is about 10 MB as PCM and about 1 MB as a 128 kbps MP3. The exact figure depends on the encoder's bitrate and the channel count — mono halves it again. Length and sample rate are unchanged.
Convert first and look at the result; half an hour of stereo speech usually lands at 25-30 MB. If that is still too big, mix the track to mono in an editor before converting — that halves it again with no audible loss on speech. Otherwise split it in two.
On speech, interviews and podcasts it is essentially inaudible through earbuds or phone speakers. On music with cymbals or applause a careful listener will notice smeared transients. Keep the WAV as your master and treat the MP3 as the distribution copy.
On the first run the page loads the MP3 encoder script, and the progress bar waits until it is ready. After that your own CPU does the encoding — faster than real time on a laptop, slower on an old phone. Later runs in the same tab skip the wait.
No. The page offers only file selection, convert and reset, so the encoder's default bitrate is used. For precise mastering settings use a desktop encoder; this tool is for shrinking a file quickly without installing anything.
Nowhere. The file is read through the File API and encoded in tab memory; the page makes no network request carrying audio. Only the encoder script comes over the wire, which makes this usable for internal meetings you cannot post to a public service.
Before: call-record.wav — 320 MB, 16-bit PCM, 44.1 kHz, stereo, 31:40
After: call-record.mp3 — about 29 MB, same length, small enough to attach
Before: demo-take3.wav — 45 MB, 16-bit PCM, 44.1 kHz, stereo, 4:20
After: demo-take3.mp3 — about 4 MB, indistinguishable on phone speakers
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