comparison: asterisk/codecs.conf
asterisk/codecs.conf
- changeset 310
- 73d852a30c9a
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| 0:c88ddeca7280 | -1:000000000000 |
|---|---|
| 1 ;[speex] | |
| 2 ; CBR encoding quality [0..10] | |
| 3 ; used only when vbr = false | |
| 4 ;quality => 3 | |
| 5 | |
| 6 ; codec complexity [0..10] | |
| 7 ; tradeoff between cpu/quality | |
| 8 ;complexity => 2 | |
| 9 | |
| 10 ; perceptual enhancement [true / false] | |
| 11 ; improves clarity of decoded speech | |
| 12 ;enhancement => true | |
| 13 | |
| 14 ; voice activity detection [true / false] | |
| 15 ; reduces bitrate when no voice detected, used only for CBR | |
| 16 ; (implicit in VBR/ABR) | |
| 17 ;vad => true | |
| 18 | |
| 19 ; variable bit rate [true / false] | |
| 20 ; uses bit rate proportionate to voice complexity | |
| 21 ;vbr => true | |
| 22 | |
| 23 ; available bit rate [bps, 0 = off] | |
| 24 ; encoding quality modulated to match this target bit rate | |
| 25 ; not recommended with dtx or pp_vad - may cause bandwidth spikes | |
| 26 ;abr => 0 | |
| 27 | |
| 28 ; VBR encoding quality [0-10] | |
| 29 ; floating-point values allowed | |
| 30 ;vbr_quality => 4 | |
| 31 | |
| 32 ; discontinuous transmission [true / false] | |
| 33 ; stops transmitting completely when silence is detected | |
| 34 ; pp_vad is far more effective but more CPU intensive | |
| 35 ;dtx => false | |
| 36 | |
| 37 ; preprocessor configuration | |
| 38 ; these options only affect Speex v1.1.8 or newer | |
| 39 | |
| 40 ; enable preprocessor [true / false] | |
| 41 ; allows dsp functionality below but incurs CPU overhead | |
| 42 ;preprocess => false | |
| 43 | |
| 44 ; preproc voice activity detection [true / false] | |
| 45 ; more advanced equivalent of DTX, based on voice frequencies | |
| 46 ;pp_vad => false | |
| 47 | |
| 48 ; preproc automatic gain control [true / false] | |
| 49 ;pp_agc => false | |
| 50 ;pp_agc_level => 8000 | |
| 51 | |
| 52 ; preproc denoiser [true / false] | |
| 53 ;pp_denoise => false | |
| 54 | |
| 55 ; preproc dereverb [true / false] | |
| 56 ;pp_dereverb => false | |
| 57 ;pp_dereverb_decay => 0.4 | |
| 58 ;pp_dereverb_level => 0.3 | |
| 59 | |
| 60 | |
| 61 ;[plc] | |
| 62 ; for all codecs which do not support native PLC | |
| 63 ; this determines whether to perform generic PLC | |
| 64 ; there is a minor performance penalty for this | |
| 65 ;genericplc => true |
