[music-dsp] On magic filter generators.

Eddie Al-Shakarchi eddie at roughproductions.co.uk
Fri Mar 11 13:07:31 EST 2005


TTTTEEEEEEST

CANNOT GET THROUGH TO MAILING LIST?!?!?

EDDD

On 11 Mar 2005, at 17:37, Luigi Bardelli wrote:

>> There are easier ways of matching impulse responses.
>>
>> See this post to comp.dsp by Greg Berchin :
>>
>>     
>> http://groups-beta.google.com/group/comp.dsp/msg/2c307e8e77fb5178? 
>> dmode=source
>>
>> All that is required is a single matrix pseudo inverse operation.
>> The algorith same algorithm with slight modifications can work
>> for matching an impulse response or magnitude reponse.
>>
>> Erik
>
> Hi Erik,
>    I haven't tried this method but, as far as I understood, it does not
> provide any quantization of the filter coefficients, that was a crucial
> point in my application, i.e. a simple approx to 16 bit coefficients
> dramatically changed the filter poles/zero locations (with some poles
> going outside the unit circle).
> Now I have to study the link you posted ;-)
>
> Best regards
>     Luigi
>
>
> ,------------------------------------------------------------------,
> | Luigi Bardelli                                                   |
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> | INFN Sezione di Firenze                                          |
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