Re: [Bluez-devel] sco links

[Simon Vogl <vogl@soft.uni-linz.ac.at>]

Fred Schättgen wrote:

>On Wednesday 03 March 2004 16:11, James Courtier-Dutton wrote:
>  
>
>>Simon Vogl wrote:
>>    
>>
>>>hi,
>>>can anyone help me with my sco link? in about 50% of cases, the audio
>>>data has an offset of one byte, resulting in terrible noise. I think I
>>>saw a flag in a packet header somewhere that indicates the number of
>>>bytes to skip
>>>until the audio data starts -- I looked through the bt specs several
>>>times now
>>>but can't find it again. Anyone has a clue for this?
>>>Simon
>>>      
>>>
>>The terrible noise will be lost interrupts
>>    
>>
>
>I have also noticed that problem. When I just tried with hstest, 2 out of 5 
>tries were noise, the rest was perfect.
>I don't think is has anything to do with interrupts, because the the problem 
>lasts for the whole duration of the connection or it doesn't appear at all.
>Also could I work around that problem somewhat in an own application by 
>guessing the byte order of the 16-bit audio samples. So I also think that 
>there is something wrong with some offset.
>
>  
>
I think too that it corresponds to an alignment problem, as the noise 
energy corresponds what I would
expect as the audio signal

Simon

-- 
_______________________________________________________________________
Dr. Simon Vogl
Institut für Pervasive Computing, Johannes Kepler Universität Linz
Altenberger Straße 69, A-4040 Linz, Austria

Tel: +43 732 2468-8517, Fax: +43 732 2468-8426
mailto: vogl@soft.uni-linz.ac.at,  http://www.soft.uni-linz.ac.at/




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