search for: acousically

Hi All, I am working on my master project to port the Speex Acousic Canceller to FPGA. But I am not able to get a satisfied result in its performance whenI integrated it to a SIP softphone as my first step. The SIP softphone calls to a PSTN gateway and lands to my land line phone. I can hear the echo of my every word while I talks on the land line phone. I am using G.711 codec, frame_size 80

Hello I have a Grandstream GXP2000 with latest firmware. When I use it holding the handpiece I don't hear any echo - neither does other end. However, if I use it handsfree, the other end notices echo when they speak - ie their voice is echoy. I hear their voice being a bit echoy. Is this purely down to the IP Phone? Is there anything I can do about it? I considered buying a more

Hi Jean-Marc, Thanks for the suggesting. I tried the test wtih my recording file offline through the testecho. I got the same result(no prepocessor echo suppression) as my recording file for that live call. Basically I don't see the difference between input_frame and output_frame. As I mentioned in my original post, the echo return loss is about 20db. I guess the echo cancelleris not really

All, Wonder why all my posts has no line breaker when it displayed the forum... I used Hotmail(Windows Live Mail) with FireFox 2.0. I am posting this msg with IE 7.0 and see if it make any difference. Anybody experienced the same issue and how to workaround it? Thanks a lot! Regards, William From: espzzh@hotmail.comTo: jean-marc.valin@usherbrooke.caCC: speex-dev@xiph.orgSubject: RE:

It seems like the firefox 2.0 not quite works with hotmail... I am reposting my message again with IE for easy readability. Sorry about mess. Hi Jean-Marc, Thanks for the suggesting. I tried the test wtih my recording file offline through the testecho. I got the same result(no prepocessor echo suppression) as my recording file for that live call. Basically I don't see the difference