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(. . .)