
The Adaptive Digital Technologies Automatic Gain Control (AGC) algorithm is used to automatically adjust the speech level of an audio signal to a predetermined value. In digital network-based equipment, audio signals come from different locations, each signal having its own nominal level. The AGC algorithm can be used to maintain the speech levels from these various sources at a common level so that subsequent processing operates on signals within a specified dynamic range.
The AGC algorithm performs gain adjustments incrementally at a rate determined by the input signal level to avoid distortion of the output signal. The algorithm also incorporates functionality to prevent excessive gain increases during prolonged intervals of silence.
Data sheet:.pdf ![]()
Programmable upper and lower gain settings
Programmable output level
Programmable noise threshold level
Low per-channel memory requirements
C-callable
Designed for multi-channel operation
ADT AGC is available on the TMS320™ DSP Family
C54x™DSP, C55x™DSP, & C64x™DSP Generations
Sampling Rate : 8 kHz
Frame Size : Programmable
Output Level Range : 0…-30 dBm
Upper Gain Limit : +23 dB
Lower Gain Limit : -23 dB
All Memory usage is given in units of 16-bit word.
MIPs (Peak) |
Program Memory |
Data Memory |
Per-Channel Data Memory |
0.27 |
456 |
270 |
22 |
Last update: 07/06/2007
All Memory usage is given in units of byte.
MIPs (Peak) |
Program Memory |
Data Memory |
Per-Channel Data Memory |
0.22 |
931 |
270 |
48 |
Last update: 05/15/2006
All Memory usage is given in units of byte.
MIPs (Peak) |
Program Memory |
Data Memory |
Per-Channel Data Memory |
0.18 |
2208 |
890 |
36 |
Last update: 10/15/2007
All Memory usage is given in units of byte.
MIPs (Peak) |
Program Memory |
Data Memory |
Per-Channel Data Memory |
0.17 |
1698 |
890 |
36 |
Last update: 10/15/2007
ADT_Init_AGC(…) Initiates a channel of AGC
ADT_Run_AGC(…) Run a channel of AGC
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