I haven't used these opcodes at all but between this thread and the
great instrument Joachim showed at LAC I'm definitely going to take a
look. It looks like it would be quite easy to build a spectral
sampler.

Rory.


On 12 May 2011 23:29, Victor Lazzarini  wrote:
> yes, exactly. But you can run instr 2 at any time to get snapshots of the
> sound as it gets analysed by pvsanal.
> On 12 May 2011, at 23:19, Roger Kelly wrote:
>
> Thank so much!
> I am fairly new to CSound.  The solution was to let instrument 1 finish the
> analysis and write the results at i-time using ftsave in instrument 2 in
> order to have a full i-time copy of the tables.    Is this a correct
> understanding on my part?
>
> On Thu, May 12, 2011 at 4:20 PM, Victor Lazzarini 
> wrote:
>>
>> It helps to copy the whole CSD ...
>> 
>> 
>> 
>> 
>>
>> ifftsize = 1024
>> ifn ftgen 2,0,ifftsize,7,0,ifftsize,0 ; make ftable
>> ifn2 ftgen 3,0,ifftsize,7,0,ifftsize,0 ; make ftable
>>
>> instr 1
>>
>> ifftsize = 1024
>> ain vco2 0dbfs/2, 440
>> ain2 =0
>> fs1 pvsanal ain, ifftsize, ifftsize/4, ifftsize, 1; fft-analysis of the
>> audio-signal
>> kflag pvsftw fs1,2,3
>> a1 pvsynth fs1
>>
>> out a1
>>
>> endin
>>
>> instr 2
>> ftsave "table1.ftsave", 1, 2
>> ftsave "table2.ftsave", 1, 3
>> turnoff
>> endin
>>
>> 
>> 
>>
>> i1 0 0.5
>> i2 0.5 1
>>
>> 
>> 
>>
>> On 12 May 2011, at 22:15, Victor Lazzarini wrote:
>>
>> I think ftsave is i-time, so your tables are being saved before you can
>> write to them. I modified your example and got a
>> result:
>> 
>> 
>> 
>> 
>>
>> ifftsize = 1024
>> ifn ftgen 2,0,ifftsize,7,0,ifftsize,0 ; make ftable
>> ifn2 ftgen 3,0,ifftsize,7,0,ifftsize,0 ; make ftable
>>
>> instr 1
>>
>> ifftsize = 1024
>> ain vco2 0dbfs/2, 440
>> ain2 =0
>> fs1 pvsanal ain, ifftsize, ifftsize/4, ifftsize, 1; fft-analysis of the
>> audio-signal
>> kflag pvsftw fs1,2,3
>> a1 pvsynth fs1
>>
>> out a1
>>
>> endin
>>
>> instr 2
>> ftsave "table1.ftsave", 1, 2
>> ftsave "table2.ftsave", 1, 3
>> turnoff
>> endin
>>
>> 
>> 
>> On 12 May 2011, at 20:43, Roger Kelly wrote:
>>
>> I am trying to use pvsftw to write amp and freq to two tables. I would
>> then like to save them in text using ftsave.
>> ifn ftgen 1,0,ifftsize,10,1 ; make ftable
>> ifn2 ftgen 2,0,ifftsize,10,1 ; make ftable
>>
>> fftin pvsanal ain, ifftsize, ioverlap, iwinsize, iwinshape; fft-analysis
>> of the audio-signal
>>
>> kflag pvsftw fftin,ifn,ifn2
>> ftsave "table1.ftsave", 1, ifn
>> ftsave "table2.ftsave", 1, ifn2
>> Both files seem identical and have on the amplitude information. What am I
>> doing wrong?
>>
>> Dr Victor Lazzarini
>> Senior Lecturer
>> Dept. of Music
>> NUI Maynooth Ireland
>> tel.: +353 1 708 3545
>> Victor dot Lazzarini AT nuim dot ie
>>
>>
>>
>> Dr Victor Lazzarini
>> Senior Lecturer
>> Dept. of Music
>> NUI Maynooth Ireland
>> tel.: +353 1 708 3545
>> Victor dot Lazzarini AT nuim dot ie
>>
>>
>
>
> Dr Victor Lazzarini
> Senior Lecturer
> Dept. of Music
> NUI Maynooth Ireland
> tel.: +353 1 708 3545
> Victor dot Lazzarini AT nuim dot ie
>
>
>


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... also for realtime interaction; for instance with a button in
qutecsound which sends the event "i 2 0 .1", and each time you push the
button the values will be written.
the call of a subinstrument which victor has shown here solves many
problems, like writing values to a file or updating a widget value. as
more as i learn csound, i use this feature.

	joachim


Am 13.05.2011 00:29, schrieb Victor Lazzarini:
> yes, exactly. But you can run instr 2 at any time to get snapshots of
> the sound as it gets analysed by pvsanal.
> 
> On 12 May 2011, at 23:19, Roger Kelly wrote:
> 
>> Thank so much!  
>>
>> I am fairly new to CSound.  The solution was to let instrument 1
>> finish the analysis and write the results at i-time using ftsave in
>> instrument 2 in order to have a full i-time copy of the tables.    Is
>> this a correct understanding on my part?
>>
>> On Thu, May 12, 2011 at 4:20 PM, Victor Lazzarini
>> > wrote:
>>
>>     It helps to copy the whole CSD ... 
>>
>>     
>>     
>>     
>>     
>>
>>     ifftsize = 1024
>>     ifn ftgen 2,0,ifftsize,7,0,ifftsize,0 ; make ftable
>>     ifn2 ftgen 3,0,ifftsize,7,0,ifftsize,0 ; make ftable
>>
>>     instr 1
>>
>>     ifftsize = 1024
>>     ain vco2 0dbfs/2, 440
>>     ain2 =0
>>     fs1 pvsanal ain, ifftsize, ifftsize/4, ifftsize, 1; fft-analysis
>>     of the audio-signal
>>     kflag pvsftw fs1,2,3
>>     a1 pvsynth fs1
>>
>>     out a1
>>
>>     endin
>>
>>     instr 2
>>     ftsave "table1.ftsave", 1, 2
>>     ftsave "table2.ftsave", 1, 3
>>     turnoff
>>     endin
>>
>>     
>>     
>>
>>     i1 0 0.5
>>     i2 0.5 1
>>
>>     
>>     
>>
>>
>>     On 12 May 2011, at 22:15, Victor Lazzarini wrote:
>>
>>>     I think ftsave is i-time, so your tables are being saved before
>>>     you can write to them. I modified your example and got a
>>>     result:
>>>
>>>     
>>>     
>>>     
>>>     
>>>
>>>     ifftsize = 1024
>>>     ifn ftgen 2,0,ifftsize,7,0,ifftsize,0 ; make ftable
>>>     ifn2 ftgen 3,0,ifftsize,7,0,ifftsize,0 ; make ftable
>>>
>>>     instr 1
>>>
>>>     ifftsize = 1024
>>>     ain vco2 0dbfs/2, 440
>>>     ain2 =0
>>>     fs1 pvsanal ain, ifftsize, ifftsize/4, ifftsize, 1; fft-analysis
>>>     of the audio-signal
>>>     kflag pvsftw fs1,2,3
>>>     a1 pvsynth fs1
>>>
>>>     out a1
>>>
>>>     endin
>>>
>>>     instr 2
>>>     ftsave "table1.ftsave", 1, 2
>>>     ftsave "table2.ftsave", 1, 3
>>>     turnoff
>>>     endin
>>>
>>>     
>>>     
>>>
>>>     On 12 May 2011, at 20:43, Roger Kelly wrote:
>>>
>>>>     I am trying to use pvsftw to write amp and freq to two tables. I
>>>>     would then like to save them in text using ftsave.
>>>>
>>>>     ifn ftgen 1,0,ifftsize,10,1 ; make ftable
>>>>     ifn2 ftgen 2,0,ifftsize,10,1 ; make ftable
>>>>
>>>>     fftin pvsanal ain, ifftsize, ioverlap, iwinsize, iwinshape;
>>>>     fft-analysis of the audio-signal
>>>>
>>>>     kflag pvsftw fftin,ifn,ifn2
>>>>     ftsave "table1.ftsave", 1, ifn
>>>>     ftsave "table2.ftsave", 1, ifn2
>>>>
>>>>     Both files seem identical and have on the amplitude information.
>>>>     What am I doing wrong?
>>>>
>>>
>>>     Dr Victor Lazzarini
>>>     Senior Lecturer
>>>     Dept. of Music
>>>     NUI Maynooth Ireland
>>>     tel.: +353 1 708 3545 
>>>     Victor dot Lazzarini AT nuim dot ie
>>>
>>>
>>>
>>
>>     Dr Victor Lazzarini
>>     Senior Lecturer
>>     Dept. of Music
>>     NUI Maynooth Ireland
>>     tel.: +353 1 708 3545 
>>     Victor dot Lazzarini AT nuim dot ie
>>
>>
>>
>>
> 
> Dr Victor Lazzarini
> Senior Lecturer
> Dept. of Music
> NUI Maynooth Ireland
> tel.: +353 1 708 3545
> Victor dot Lazzarini AT nuim dot ie
> 
> 
> 


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