Audio Noise Gate for Texas Instruments C5510 / C6713

Distinguish between signal and noise in audio source

Description

Used on cellular phones to filter out
background noise. Measure the signal to noise ratio of an audio input in realtime. Pass speech but give silence where the input is noise (hiss, snap crackle and pop).

Includes a tutorial on how to use statistics (correlation coefficient) to calculate the signal to noise ratio.

Realtime implementation using Texas Instruments TMS320C5510 DSK and TMS320C6713 DSK. Code mostly in C, except where it would be too slow and assembly language is used.

• MATLAB release: MATLAB 6.0 (R12)
• Other requirements: Texas Instruments TMS320C5510 DSK or Texas Instruments TMS320C6713 DSK Microphone CD player loudspeakers

[Aliasgar Presswala]

 

[Hao Yanchun]

Thank you, I am just looking for it !