Compare Dolby Digital Audio and Waveform Audio formats — understand the key differences and when to use each
Dolby Digital Audio
Dolby Digital Audio (.ac3) is a audio file format.
Waveform Audio
WAV (Waveform Audio File Format) is an uncompressed audio format developed by Microsoft and IBM, based on the RIFF container format. WAV stores audio as raw PCM (Pulse Code Modulation) data, providing perfect, bit-for-bit audio reproduction with zero quality loss. Standard CD-quality WAV uses 16-bit depth at 44,100 Hz sample rate (1,411 kbps), while professional recordings use 24-bit at 96 kHz or higher. WAV is the industry standard for professional music production, film scoring, sound design, voice-over recording, and audio mastering. It's supported by virtually all audio software and hardware. The main disadvantage is large file size — approximately 10 MB per minute at CD quality. WAV also supports metadata, cue points, and embedded loop information. For archival purposes, WAV provides the most reliable long-term audio preservation.
| Feature | AC3 | WAV |
|---|---|---|
| Full Name | Dolby Digital Audio | Waveform Audio |
| File Extension | .ac3 | .wav |
| Category | audio | audio |
| Free to Convert | ✓ Yes | ✓ Yes |
| Browser Support | ✓ All Browsers | ✓ All Browsers |
| Convert to Each Other | ✓ Yes | ✓ Yes |
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