32
In the Antex driver the bitrate is specified on a per-channel basis. Therefore, requesting 64 kbits/s and
stereo will result in a 128 kbits/s compressed MPEG stream. Supported bitrates (per channel) and
compression ratios are as follows:
Layer I
32 Khz
44.1 Khz
48 Khz
Bitrate
(kbits/s)
Compression
ratio
Bitrate
(kbits/s)
Compression
ratio
Bitrate
(kbits/s)
Compression
ratio
32
16
32
22.1
32
24.0
64
8.0
64
11.0
64
12.0
96
5.3
96
7.4
96
8.0
128
5.5
128
6.0
160
4.8
Layer II
32 Khz
44.1 Khz
48 Khz
Bitrate
(kbits/s)
Compression
ratio
Bitrate
(kbits/s)
Compression
ratio
Bitrate
(kbits/s)
Compression
ratio
32
16
32
22.1
32
24
48
10.7
48
14.7
48
16
56
9.1
56
12.6
56
13.7
64
8.0
64
11.0
64
12.0
80
6.4
80
8.8
80
9.6
96
5.3
96
7.4
96
8.0
112
4.6
112
6.3
112
6.9
128
4.0
128
5.5
128
6.0
160
3.2
160
4.4
160
4.8
192
2.7
192
3.7
192
4.0
224*
2.3
224*
3.2
224*
3.4
256*
2
256*
2.8
256*
3.0
320*
1.6
320*
2.2
320*
2.4
384*
1.3
384*
1.8
384*
2.0
* These bitrates are available for mono files only.
Layer II uses a more sophisticated compression algorithm than Layer I, so it is recommended that Layer
II be used wherever possible.