[Speex-dev] AEC on a TI C6x - has no effect

[Jim Crichton]

For me, this was a memory allocation problem.  I am using a private heap, 
and somewhere between build 11522 and 11700, the allocation for two large 
buffers was changed from calloc to speex_alloc (I am sure that this was a 
cleanup change, and I have not had a chance to locate it yet).  This was 
overrunning my heap, and enlarging the heap solved the problem.

I suspect that Itay is having a similar problem.

- Jim

----- Original Message ----- 
From: "Jean-Marc Valin" <jean-marc.valin at usherbrooke.ca>
To: "Jim Crichton" <jim.crichton at comcast.net>
Cc: "Itay Chamiel" <ItayC at mangodsp.com>; <speex-dev at xiph.org>
Sent: Tuesday, August 15, 2006 9:26 AM
Subject: Re: [Speex-dev] AEC on a TI C6x - has no effect


> Jim Crichton a écrit :
>> Itay,
>>
>> I tested on C6x in May with build 11343 and 11398, and it worked
>> fine.  I just ran the same test with build 11768, and there was no
>> cancellation, just as you saw.  I will try to track this down in the
>> next day or two.  In the meantime, I suggest that you try testing
>> with 11398.
>
> Hmm, that's odd because the fixed-point seems to work for me and usually
> the problems show up with the C55, but not the C64. The only two changes
> I made to the AEC since 11398 were 11750 and 11751. Can you tell me
> which one is problematic?
>
> Thanks,
>
> Jean-Marc
>
>> - Jim ----- Original Message ----- From: Itay Chamiel To:
>> speex-dev at xiph.org Sent: Monday, August 14, 2006 10:56 AM Subject:
>> RE: [Speex-dev] AEC on a TI C6x - has no effect
>>
>>
>> Thanks to a tip from Jean-Marc, I tried the floating point version
>> and it worked well.
>>
>> If anyone has a clue as to why the fixed point version doesn't work,
>> let me know as I would really appreciate the CPU time reduction (20%
>> as opposed to 70%).
>>
>> Thanks,
>>
>> -itay
>>
>>
>>
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