Zoom H1n, Tascam DR-05, Sony ICD: digital recorders produce excellent audio, often as WAV files of hundreds of megabytes. TraScrivo takes them as they are and returns timestamped text.
Transcribe now, free →For transcription this is plenty: WAV 44.1 or 48 kHz at 16 bit, or mp3 at 128 kbps. Recording at 96 kHz/24 bit does not improve the text and triples the size. Mono is enough for voice; stereo is fine too. Turn on the low-cut filter to remove rumble and keep the level out of the red.
A two-hour WAV at 48 kHz stereo is about 1.3 GB: uploading takes time on slow connections. If you prefer, convert to 128 kbps mp3 before uploading (10 times lighter, same transcription quality), or set the recorder to mp3 from the start.
No practical length limit; for huge files the upload time depends on your connection. In mp3 the issue disappears.
Not for transcription: a 128 kbps mp3 gives the same text. WAV matters if you also edit or archive the audio.
Yes, if your computer reads it: pick the file in the upload area like any other.