[music-dsp] Fw: A little question about DSP performance

Victor Lazzarini Victor.Lazzarini at nuim.ie
Thu Oct 1 17:26:38 EDT 2009


If you are a programmer, you'd probably prefer to use python with
scipy, numpy and matplotlib. Far more elegant to write and read... IMHO


Victor


On 1 Oct 2009, at 18:56, Didier Dambrin wrote:

> I know but I don' thave the scientific background for matlab, and  
> I've grown
> enough tools to test stuff quickly by code.
>
> I'd put the sample somewhere online if my public FTP wasn't always  
> broken.
>
>
>
>
>> On Oct 1, 2009, at 1:30 PM, Didier Dambrin wrote:
>>
>>> Not sure what you meant by 'at the end of a long sound file',  
>>> though.
>>> I'm really simply talking about the audible difference between 2
>>> saws, when
>>> you just phase-shift one of its harmonics.
>>>
>>
>> because we know we can hear abrupt discontinuities, in that matlab
>> file, i am letting the phase slip from what it is in the first saw to
>> what it is in the second saw.  so at the end of the sound file it is
>> a different bandlimited saw than it was at the beginning.  if you can
>> hear it be different from beginning to end, then the difference is
>> audible.
>>
>> Didier, consider getting matlab or Octave (the latter is free).  it's
>> a way to pass the analytical information along in a compressed and
>> human-readable form.  so we all know we are talking about the same
>> thing.
>>
>>
>> --
>>
>> r b-j                  rbj at audioimagination.com
>>
>> "Imagination is more important than knowledge."
>>
>>
>>
>>
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