WAV File Compression Codecs Compared
As mentioned wav files can be encoded with a variety of codecs to reduce the file size (for example the GSM or MP3 codecs).
This is a reference to compare the monophonic (not stereophonic) audio quality and compression bitrates of the different codecs available for .wav files including PCM, ADPCM, Microsoft GSM 06.10, CELP, SBC, Truespeech and MPEG Layer-3.
| Format | Bitrate | 1 Minute = | Sample |
|---|---|---|---|
| 11,025 Hz 16 bit PCM | 176.4 kbit/s | 1292 KB | 11k16bitpcm.wav |
| 08,000 Hz 16 bit PCM | 128 kbit/s | 0938 KB | 8k16bitpcm.wav |
| 11,025 Hz 8 bit PCM | 088.2 kbit/s | 0646 KB | 11k8bitpcm.wav |
| 11,025 Hz µ-Law | 088.2 kbit/s | 0646 KB | 11kulaw.wav |
| 08,000 Hz 8 bit PCM | 064 kbit/s | 0469 KB | 8k8bitpcm.wav |
| 08,000 Hz µ-Law | 064 kbit/s | 0469 KB | 8kulaw.wav |
| 11,025 Hz 4 bit ADPCM | 044.1 kbit/s | 0323 KB | 11kadpcm.wav |
| 08,000 Hz 4 bit ADPCM | 032 kbit/s | 0234 KB | 8kadpcm.wav |
| 11,025 Hz GSM 06.10 | 018 kbit/s | 0132 KB | 11kgsm.wav |
| 08,000 Hz MP3 16 kbit/s | 016 kbit/s | 0117 KB | 8kmp316.wav |
| 08,000 Hz GSM 06.10 | 013 kbit/s | 0103 KB | 8kgsm.wav |
| 08,000 Hz Lernout & Hauspie SBC 12 kbit/s | 012.0 kbit/s | 0088 KB | 8ksbc12.wav |
| 08,000 Hz DSP Group Truespeech | 009 kbit/s | 0066 KB | 8ktruespeech.wav |
| 08,000 Hz MP3 8 kbit/s | 008 kbit/s | 0060 KB | 8kmp38.wav |
| 08,000 Hz Lernout & Hauspie CELP | 004.8 kbit/s | 0035 KB | 8kcelp.wav |
The above are WAV files; even those that use the MP3 codec have the ".wav" extension.
Read more about this topic: WAV
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