gain
0~31
4/4
Gain of input
31 => +12 dB
30 => +10.5 dB
29 => +9 dB
28 => +7.5 dB
27 => +6 dB
26 => +4.5 dB
25 => +3 dB
24 => +1.5 dB
23 => 0 dB
22 => -1.5 dB
21 => -3 dB
20 => -4.5 dB
19 => -6 dB
18 => -7.5 dB
17 => -9 dB
16 => -10.5 dB
15 => -12 dB
14 => -13.5 dB
13 => -15 dB
12 => -16.5 dB
11 => -18 dB
10 => -19.5 dB
9 => -21 dB
8 => -22.5 dB
7 => -24 dB
6 => -25.5 dB
5 => -27 dB
4 => -28.5 dB
3 => -30 dB
2 => -31.5 dB
1 => >-33 dB
0 => -34.5 dB
s<0~(m-1)>_
codectype
aac4,
gamr
4/4
Set audio codec type for input
aac4 => AAC
gamr => GSM-AMR
s<0~(m-1)>_
aac4_bitrate
16000,
32000,
48000,
64000,
96000
128000
4/4
Set AAC4 bitrate in bps
16000 => 16 Kbps
32000 => 32 Kbps
48000 => 48 Kbps
64000 => 64 Kbps
96000 => 96 Kbps
128000 => 128 Kbps
s<0~(m-1)>_
gamr_bitrate
4750,
5150,
5900,
6700,
7400,
7950,
10200,
12200
4/4
Set AMR bitrate in bps
4750 => 4.75 Kbps
5150 => 5.15 Kbps
5900 => 5.90 Kbps
6700 => 6.7 Kbps
7400 => 7.4 Kbps
7950 => 7.95 Kbps
10200 => 10.2 Kbps
12200 => 12.2 Kbps