[Speex-dev] echo cancellation test problem on Windows OS.

[lee kyung moon]

Sorry.
I forgot speaking signal must precede mic signal.
I removed delay more and save another files.

http://www.vdream.co.kr/temp/cs/echocancel_2.zip .

speak-signal2.pcm : remove delay so as to precede mic-signal.pcm.
output2.pcm : output file 

>From: "lee kyung moon" <gilgil1973 at hotmail.com>
>To: speex-dev at xiph.org
>Subject: [Speex-dev] echo cancellation test problem on Windows OS.
>Date: Wed, 12 Oct 2005 01:47:27 +0000
>
>Hi, all.
>I'm a programmer lived in Korea.
>This time, I was investingating echo cancellation and found speex 
>echo cancellation related API.
>But echo stilll remains.
>
>1. echo cancellation using only files works propertly.
>2. echo cancellation using sound device works not propertly.
>
>You can download test files as followed.
>
>http://www.vdream.co.kr/temp/ec/echocancel.wmv ( testing screen 
>capture file )
>
>http://www.vdream.co.kr/temp/ec/echocancel.zip ( test files )
>
>The reason why echo still remains is that speaking signal from sound 
>device differs from speaking signal from file, I guess.
>
>It's my pleasure to see my testring files.
>Thanks in advanced.
>
>
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