| Format | M4A |
| Compression | Lossy (AAC codec) |
| File size | Small |
| Quality | Good for listening |
| Format | WAV |
| Compression | Lossless (PCM) |
| File size | Large |
| Quality | Perfect — no loss |
| Max files | 20 at once |
| Upload | None — browser only |
WAV is uncompressed PCM audio — the standard for professional audio editing, DAWs like GarageBand, Logic, Audacity, and Pro Tools. If you're editing voice memos or working with audio professionally, WAV is what you need.
44,100 Hz — CD quality, universal compatibility.
48,000 Hz — video/film standard, use if syncing to video.
22,050 Hz — half CD quality, smaller file, fine for voice.
16,000 Hz — voice only, smallest file, used for speech recognition.