WAV: Difference between revisions
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{{modernBug|Files using the extended [[Wikipedia:Broadcast Wave Format|Broadcast Wave Format (BWF)]] have weird behavior in Source, and should be converted to regular WAV using FFMpeg or Audacity before use in-game. Some audio editors export as BWF automatically, such as Pro Tools and Logic Pro, and do not provide an option to export a standard WAV.}} | {{modernBug|Files using the extended [[Wikipedia:Broadcast Wave Format|Broadcast Wave Format (BWF)]] have weird behavior in Source, and should be converted to regular WAV using FFMpeg or Audacity before use in-game. Some audio editors export as BWF automatically, such as Pro Tools and Logic Pro, and do not provide an option to export a standard WAV.}} | ||
{{modernWarning|Although the WAV format specifications permit up to 32 channels in a single file, and {{src}} supports surround sound, {{src}} does '''''not''''' support WAV files with more than 2 channels!}} | {{modernWarning|Although the WAV format specifications permit up to 32 channels in a single file, and {{src}} supports surround sound, {{src}} does '''''not''''' support WAV files with more than 2 channels!}} | ||
{{ | {{ModernConfirm|What about {{src2|4}}? It definitely supports 16-bit 44.1 KHz WAVs (mono and stereo), but does it support the other formats that {{src}} and {{gldsrc}} support?<br>It supposedly supports arbitrary sample rates for MP3s; is this the case for WAVs as well?}} | ||
== Bit rates == | == Bit rates == | ||
Revision as of 13:16, 22 July 2023
Waveform Audio File Format is an audio format with a .wav file extension, used by all of Valve's engines. It is required for lipsynced dialogue and looped sounds without a custom audio backend.
GoldSrc supports uncompressed 8-bit or 16-bit PCM, although lip-synched audio must be 8-bit. It supports sample rates of 11025 Hz or 22050 Hz; other sample rates can sometimes be used, but they will be resampled to 22050 Hz before playback.
Source supports uncompressed 8-bit and 16-bit PCM, as well as compressed 4-bit Microsoft ADPCM. It supports sample rates at 11025 Hz, 22050 Hz, and 44100 Hz; files at other sample rates, such as 32000 Hz and 48000 Hz, will not play.
Template:ModernBug Template:ModernWarning
Confirm:What about 
Source 2? It definitely supports 16-bit 44.1 KHz WAVs (mono and stereo), but does it support the other formats that and support?It supposedly supports arbitrary sample rates for MP3s; is this the case for WAVs as well?
Bit rates
WAV files have a consistent bitrate depending upon their sample rate, bit depth, and channel count. The following tables indicate what bitrates files will be at supported sample rates.
Template:ModernTip Mono sounds (1 channel)
| Sample Rate | 16-bit PCM | 8-bit PCM | 4-bit ADPCM | Quality |
|---|---|---|---|---|
| 11025 Hz | 176.4 kbps | 88.2 kbps | 44.1 kbps | AM radio; used by most  sound effects
|
| 22050 Hz | 352.8 kbps | 176.4 kbps | 88.2 kbps | Max sample rate of sound effects
|
| 44100 Hz | 705.6 kbps | 352.8 kbps | 176.4 kbps | CD quality |
Stereo sounds (2 channels) (not in )
| Sample Rate | 16-bit PCM | 8-bit PCM | 4-bit ADPCM | Quality |
|---|---|---|---|---|
| 11025 Hz | 352.8 kbps | 176.4 kbps | 88.2 kbps | AM radio |
| 22050 Hz | 705.6 kbps | 352.8 kbps | 176.4 kbps | |
| 44100 Hz | 1411.2 kbps | 705.6 kbps | 352.8 kbps | CD quality |
