From alberto.box66 at gmail.com Mon Mar 30 06:48:11 2015 From: alberto.box66 at gmail.com (alberto box) Date: Mon, 30 Mar 2015 12:48:11 +0200 Subject: [openal] Audio loopback and AEC In-Reply-To: References: Message-ID: Hi, I write here for the first time, I have an echo problem and I'd need an advice. I still use OpenAl 1.1 on Windows (but i can update). I have N input streams that are processed and rendered (on the pc speakers) with standard openal api. I also have mic capture that is forwarded back to the N peers. Now, my initial hw devices have been changed and now I have acoustic echo for audio coming from speakers and going back into mic. I'm looking for the best way to perform an echo cancellation to avoid (or limit) the problem. Because openal doesn't offer aec, I'm thinking about capturing the rendered audio (while still playing it on the speakers) and using it as input for an external aec algorithm (Speex?). I have found alc_soft_loopback extension but I saw in another mail (in this list) it is not suited to me because, as far as i understood, using it means not sending audio to the speakers. Is there any other extension to get back rendered audio for aec processing, while having it played? Thank you (and sorry for my poor english) Alberto -------------- next part -------------- An HTML attachment was scrubbed... URL: