[speex-dev] Speex Options

Andras Kadinger bandit at surfnonstop.com
Fri Feb 9 06:05:01 PST 2007


When you say inverted, do you mean
a) input and output exchanged with each other,
or
b) input or output having changed sign numerically (e.g. multiplied by -1)?

Andras

Jean-Marc Valin wrote:
> Make sure that:
>
> 1) You're using svn head, which has many improvements
> 2) The AEC inputs aren't inverted
> 3) The delay between the near end and far end signals isn't too big (if
> you don't know what I'm talking about, RTFM)
> 4) The capture and playback are done on the same device (synced clock)
>
> 	Jean-Marc
>
> gorun.butail at wipro.com a écrit :
>   
>> Hi all,
>>
>>  
>>
>> I have been trying to implement audio echo cancellation using mdf.c from
>> opal-2.2.2. Using testecho.c the output obtained is not satisfactory. It
>> is cancelling the far end signal instead of the near end signal as per
>> requirement. I have been moving in circles figuring how to approach the
>> problem. Is there something wrong with the mdf that I am using?
>>
>>  
>>
>> I would be really thankful if anybody could guide and help in this
>> matter. I am attaching mdf, testecho, as well as input .wav files for
>> reference.
>>
>>  
>>
>>  
>>
>> Regards,
>>
>> Gorun Butail
>>
>>  
>>
>>
>>
>>
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