Audio Processing - Cisco D9040 User And Service Manual

Audio Processing

Audio Performance
Insertion gain
Pass-band frequency response
32 kHz sample rate
44.1 and 48 kHz sample rate
Crosstalk
Gain difference between channels
Phase difference between channels
Layer II Encoding
Encoding
Program modes
Audio data bit rate
Sample frequency
Layer II Audio Performance (at 384 kbit/s)
SINAD at 1,020 Hz
Idle channel noise
A-14
Item
Item
Item
Technical Specifications
Specification
±0.5 dB
±0.25 dB, rel. 1 kHz
20 to 14,500 Hz
20 to 20,000 Hz
< -80 dB, 20 Hz to 20 kHz
±0.5 dB, 20 Hz to 20 kHz
< 3°, 20 Hz to 20 kHz
Specification
According to MPEG-1, Layer II
Single mono, dual channel, joint stereo,
stereo
32, 48, 56, 64, 80, 96, 112, 128, 160, 192, 224,
256, 320 and 384 kbit/s
32, 44.1 and 48 kHz
Specification
> 80 dB
< -86 dBq0ps, A-weighted
4020024 Rev C