Re: mad-dev Digest, Vol 20, Issue 2

For algorithm, I think it is almost the best. But for implementation, there might be another optimization. Remember, the choice of algorithm is much dependent upon the hardware architecture.

Regards,

Li xiaochao.Jeff
----- Original Message ----- 
From: <[email protected]>
To: <[email protected]>
Sent: Friday, March 30, 2007 3:00 AM
Subject: mad-dev Digest, Vol 20, Issue 2


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>   1. Synthesis filter bank in libmad (Karthika)
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> Message: 1
> Date: Thu, 29 Mar 2007 07:45:58 +0100 (BST)
> From: Karthika <[email protected]>
> Subject: [mad-dev] Synthesis filter bank in libmad
> To: MAD <[email protected]>
> Message-ID: <[email protected]>
> Content-Type: text/plain; charset=iso-8859-1
> 
> Helloo,
>    I am trying to understand the synthesis filter
> bank in the LIBMAD. I could not understand in what
> order the D coefficients are used to obtain the PCM
> samples. Also,half of these coefficients have some
> relation to the other half. Then, why all the
> coefficients are being used in D.dat file? What is the
> significance of even and odd pointers? How is the
> windowing operation between U vector and D vector
> taking place? 
> 
>   Also, I would like to know if we can further
> optimize the LIBMAD source code. For e.g, by using
> Cooley-Tukey algorithm for the calculation of
> fastdct() and dct32() . Could anyone suggest any
> further optimization techniques for porting LIBMAD on
> an ARM processor?
> 
>   Any help will be greatly appreciated.
> 
>   Thanks and Regards,
>     Karthika Lakshmi.
> 
> 
> 
> 
> 
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> End of mad-dev Digest, Vol 20, Issue 2
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