1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/asterisk/codecs.conf Mon Apr 27 12:19:05 2009 +0200
1.3 @@ -0,0 +1,65 @@
1.4 +;[speex]
1.5 +; CBR encoding quality [0..10]
1.6 +; used only when vbr = false
1.7 +;quality => 3
1.8 +
1.9 +; codec complexity [0..10]
1.10 +; tradeoff between cpu/quality
1.11 +;complexity => 2
1.12 +
1.13 +; perceptual enhancement [true / false]
1.14 +; improves clarity of decoded speech
1.15 +;enhancement => true
1.16 +
1.17 +; voice activity detection [true / false]
1.18 +; reduces bitrate when no voice detected, used only for CBR
1.19 +; (implicit in VBR/ABR)
1.20 +;vad => true
1.21 +
1.22 +; variable bit rate [true / false]
1.23 +; uses bit rate proportionate to voice complexity
1.24 +;vbr => true
1.25 +
1.26 +; available bit rate [bps, 0 = off]
1.27 +; encoding quality modulated to match this target bit rate
1.28 +; not recommended with dtx or pp_vad - may cause bandwidth spikes
1.29 +;abr => 0
1.30 +
1.31 +; VBR encoding quality [0-10]
1.32 +; floating-point values allowed
1.33 +;vbr_quality => 4
1.34 +
1.35 +; discontinuous transmission [true / false]
1.36 +; stops transmitting completely when silence is detected
1.37 +; pp_vad is far more effective but more CPU intensive
1.38 +;dtx => false
1.39 +
1.40 +; preprocessor configuration
1.41 +; these options only affect Speex v1.1.8 or newer
1.42 +
1.43 +; enable preprocessor [true / false]
1.44 +; allows dsp functionality below but incurs CPU overhead
1.45 +;preprocess => false
1.46 +
1.47 +; preproc voice activity detection [true / false]
1.48 +; more advanced equivalent of DTX, based on voice frequencies
1.49 +;pp_vad => false
1.50 +
1.51 +; preproc automatic gain control [true / false]
1.52 +;pp_agc => false
1.53 +;pp_agc_level => 8000
1.54 +
1.55 +; preproc denoiser [true / false]
1.56 +;pp_denoise => false
1.57 +
1.58 +; preproc dereverb [true / false]
1.59 +;pp_dereverb => false
1.60 +;pp_dereverb_decay => 0.4
1.61 +;pp_dereverb_level => 0.3
1.62 +
1.63 +
1.64 +;[plc]
1.65 +; for all codecs which do not support native PLC
1.66 +; this determines whether to perform generic PLC
1.67 +; there is a minor performance penalty for this
1.68 +;genericplc => true
