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Discussion Groups | Echo Cancellation
DC shifting of the filter in NLMS? [7 Articles]
Andrew Xiang - Sep 16 2003
I noticed the DC shifting upward of the filter(impulse response) sometimes?
Anyone know what caused that and how to avoid it?
thanks
Andrew
... 
RE: acoustic echo cancellation performance? [2 Articles]
Shaw, David G David - Sep 12 2003
From experience you should not count on echo cancellation
like you expect from the LEC numbers you may be familiar with.
Measure the microphone noise floor and make... acoustic echo cacellation performance? [2 Articles]
andrew_xiang - Sep 12 2003
Anyone implemented a system that get you 30dB of reduction for AEC?
In my system, I only get 4X for voice signal. I will give it a try
with white noise. But seem... LEC and NEC [7 Articles]
lee - Aug 28 2003
Can someone tell me what the difference is between a Line Echo
Canceller and a Network Echo Canceller? To me, it seems that the only
difference is the echo path del... Codec digital AC impedence matching and tranhybrid balancing
gordon_ao - Aug 12 2003
Hello folks,
I have recently came across some Codec designs using feedback digital
filter to scale/synthesize the external SLIC impedance in order to
achieve i... Detecting tones in an EC'ed channel
Steve Underwood - Aug 3 2003
Hi all,
Tones really screw up the adaption of an EC. To get through the G.168
tests there seems to be no alternative but to detect that strong
narrowband energ... complex NLMS update? [2 Articles]
Chandrasekaran C - Jul 31 2003
Hi all,
I am using NLMS complex Adaptive filter. In the coefficient update part, error
is normalized with input signal power and is multiplied with gain and refe... details about the test vector [3 Articles]
Ravi Revankar - Jul 23 2003
Hi,
I need some information about the css (composite
source signal) required for echo canceller testing.
Can I get it free in some URL. If someone has
generated... dsp and codec as standalone
kommieteh - Jul 2 2003
hello all,
is there anybody who can help me initialize the tLv320aic11 codec?
I am neither using a dsk nor codec evm. I have a standalone dsp
(mcbsp as master) co...