one of the analyses is done by the utility cvanal. The spectrum
is then stored and is read by convolve.

Victor

----- Original Message ----- 
From: "Federico Vanni" 
To: "csound mailing list" 
Sent: Wednesday, September 10, 2008 8:25 PM
Subject: [Csnd] opcode convolve


> Hi list,
>
> a little question concerning the "convolve" opcode.
>
> I know that to make the convolution we need to
> perform two analysis in order to multiply two spectras.
>
> So why to use the convolve opcode it's sufficient to
> performance only one analysis?
>
> Thanks
> FV
>
>
>
>
>
>
>
>
>
>
>
>
>
>
> Send bugs reports to this list.
> To unsubscribe, send email sympa@lists.bath.ac.uk with body "unsubscribe 
> csound" 

ok, but...
why only one analysis instead of two?

fv

Il giorno 10/set/08, alle ore 21:48, victor ha scritto:

> one of the analyses is done by the utility cvanal. The spectrum
> is then stored and is read by convolve.
>
> Victor
>
> ----- Original Message ----- From: "Federico Vanni"  
> 
> To: "csound mailing list" 
> Sent: Wednesday, September 10, 2008 8:25 PM
> Subject: [Csnd] opcode convolve
>
>
>> Hi list,
>>
>> a little question concerning the "convolve" opcode.
>>
>> I know that to make the convolution we need to
>> perform two analysis in order to multiply two spectras.
>>
>> So why to use the convolve opcode it's sufficient to
>> performance only one analysis?
>>
>> Thanks
>> FV
>>
>>
>>
>>
>>
>>
>>
>>
>>
>>
>>
>>
>>
>>
>> Send bugs reports to this list.
>> To unsubscribe, send email sympa@lists.bath.ac.uk with body  
>> "unsubscribe csound"
>
>
>
> Send bugs reports to this list.
> To unsubscribe, send email sympa@lists.bath.ac.uk with body  
> "unsubscribe csound"

Because the audio input is analysed on the fly. It might in principle be 
a real-time audio stream, not coming from a file at all. The classic 
application is reverb, using a pre-analysed impulse response of a hall, 
  tank, bathroom, whatever, and convolving the audio input coming from 
your live recording. Of course the long latency in this case is a major 
limitation, and the newer pconvolve opcode would be much preferred; 
apart from using "partioned convolution" with very much reduced latency, 
it works in exactly the same way.

Richard Dobson


Federico Vanni wrote:
> ok, but...
> why only one analysis instead of two?
> 
> fv
> 
> Il giorno 10/set/08, alle ore 21:48, victor ha scritto:
> 
>> one of the analyses is done by the utility cvanal. The spectrum
>> is then stored and is read by convolve.
>>
>> Victor
>