developer_reference:audio
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developer_reference:audio [2019/05/15 11:07] admin [Supported Audio Formats] |
developer_reference:audio [2019/05/15 11:20] admin [Supported Audio Formats] |
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| ==== Supported Audio Formats ==== | ==== Supported Audio Formats ==== | ||
| //When choosing your format keep in mind that our engine automatically runs the files through a compression µ-law algorithm. This means that all files will be down sampled to an 8-bit 8kHz. If you were to encode the files in a lower quality you would find the audio files you use would end up sounding better than your initial compression.// | //When choosing your format keep in mind that our engine automatically runs the files through a compression µ-law algorithm. This means that all files will be down sampled to an 8-bit 8kHz. If you were to encode the files in a lower quality you would find the audio files you use would end up sounding better than your initial compression.// | ||
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| - | There are three audio formats for development that are always recommended: | ||
| - | * 8 kHz 16-bit linear PCM WAV | ||
| - | * 8 kHz 8-bit µ-law WAV | ||
| - | * 32 kbps 16khz MP3 (anything larger is overkill) | ||
| - | * **(all audio files must be mono not stereo)** | ||
| + | == There are three audio formats for development that are always recommended (all audio files must be mono not stereo): == | ||
| ^ Sample Rate ^ Encoding ^ File Extension ^ | ^ Sample Rate ^ Encoding ^ File Extension ^ | ||
| | 8000 (8kHz) | 16-bit linear PCM | .wav | | | 8000 (8kHz) | 16-bit linear PCM | .wav | | ||
| | 8000 (8kHz) | 8-bit µ-law WAV | .ul | | | 8000 (8kHz) | 8-bit µ-law WAV | .ul | | ||
| - | | 32000 (kps) | 16khz | .mp3 | | + | | 32000 (32kps)* | 16khz | .mp3 | |
| - | + | * Anything more would be overkill | |
| - | + | ||
| - | The following audio formats are also supported for the <audio> tag: | + | |
| - | + | ||
| - | * 8 kHz 16-bit linear PCM headerless (*.l16) | + | |
| - | * 8 kHz 8-bit µ-law encoded headerless (*.ul) | + | |
| - | * 8 kHz 8-bit a-law encoded headerless (*.al) | + | |
| - | * 8 kHz 8-bit a-law WAV (*.wav) | + | |
| - | * MP3 (*.mp3) - Note: If the audio file is poorly encoded, the mp3 will not work. | + | |
| + | == The following audio formats are also supported for the <audio> tag: == | ||
| ^ Sample Rate ^ Encoding ^ File Extension ^ | ^ Sample Rate ^ Encoding ^ File Extension ^ | ||
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| | 8000 (8kHz) | 8-bit a-law encoded headerless | .al | | | 8000 (8kHz) | 8-bit a-law encoded headerless | .al | | ||
| | 8000 (8kHz) | 8-bit a-law WAV | .wav | | | 8000 (8kHz) | 8-bit a-law WAV | .wav | | ||
| - | | 32000 (kps) | 16khz | .mp3 | | + | | 32000 (32kps)* | 16khz | .mp3 | |
| + | * If the audio file is poorly encoded, the mp3 will not work | ||
| ==== Prompt Queuing and Barge-in Behavior ==== | ==== Prompt Queuing and Barge-in Behavior ==== | ||