Adaptive Feedback Control
Advanced Audio Coding

DESCRIPTION

In many acoustic applications, the presence of feedback can cause a resonance to occur. Whether or not the resonance occurs as well as the frequency of the resonance depends upon many variables: is a function of gain/loss, acoustic reflections, room size, and system delay.

Adaptive Digital's Adaptive Feedback Control algorithm analyzes an input signal, determines whether or not there is a resonance, and eliminates the resonance while minimizing the effect on the desired signal.

AVAILABILITY

ADT Adaptive Feedback Control is available on the TMS320C5000™ DSP Platform

C55x™DSP & C64x™DSP Generation

SPECIFICATIONS

MIPS (Peak) CPU Resource and Memory Resource Requirements

  • C55x

All Memory usage of AFC C55x is given in units of bytes.

Adaptive Feedback Control Sampling Rate MIPS (peak) Program Memory Data Memory Per-channel Data Memory
AFC_ADT_run 8000 67 2339 5542 3504

 

  • C64x

All Memory usage of AFC C64x is given in units of bytes.

Adaptive Feedback Control Sampling Rate MIPS (peak) Program Memory Data Memory Per-channel Data Memory
AFC_ADT_run 8000 22 5216 4854 1676
AFC_ADT_run 16000 61 5216 5190 2544
AFC_ADT_run 44100 333 5216 6254 5244
AFC_ADT_run 48000 364 5216 6414 5676

 

  • C64x+
All Memory usage of AFC C64x is given in units of bytes.
Adaptive Feedback Control Sampling Rate MIPS (peak) Program Memory Data Memory Per-channel Data Memory
AFC_ADT_run 8000 32 5216 4854 1676
AFC_ADT_run 16000 64 5216 5190 2544
AFC_ADT_run 44100 339 5216 6254 5244
AFC_ADT_run 48000 397 5216 6414 5676

API FUNCTIONS

AFC_ADT_init(. . .)

AFC_ADT_initObj(. . .)

AFC_ADT_run(. . .)


AFC

 

Sampling Rate: 8 - 96 kH

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our demo software.

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  for more information

Adaptive Digital provides support throughout all project phases; customers have access to our technical team directly over the phone or via email.