Hi all,

I am, for the first time, trying to work with realtime input and output 
together to process signal from external sources (so far, a Nintendo DS 
Lite with the Korg DS-10 emulator).  I have it basically working, and am 
getting some interesting results with the PVS opcodes.  However, at some 
amount of time, I start getting a semi-rhythmic clicking in the sound, 
not with note attacks but in the course of sustained notes.

I'm running on WinXP using a Creative SoundBlaster Live! external sound 
card (USB).

A minimal CSD follows (just passing unaltered audio signal through PVS 
without any effects) that duplicates the problem for me.  I would 
appreciate any advice.

- Dave

--- cut here---




--expression-opt -g -B 16484 -b 4096 -i adc1 -W -o dac1




sr	=	44100
ksmps	=	2
nchnls	=	1

	instr	1
asig	in
fsig	pvsanal		asig, 4096, 512, 8192, 0
asyn	pvsynth		fsig
	out		asyn
	endin




i1 0 3600
e

I'd say two things: your buffers are too large and your ksmps is two
small. I would also suggest using hanning window (1) instead of hamming (0)
and smaller analysis frame (1024 or 2048).

Victor

----- Original Message ----- 
From: "Dave Seidel" 
To: 
Sent: Saturday, September 26, 2009 9:57 PM
Subject: [Csnd] help with realtime PVS


> Hi all,
>
> I am, for the first time, trying to work with realtime input and output 
> together to process signal from external sources (so far, a Nintendo DS 
> Lite with the Korg DS-10 emulator).  I have it basically working, and am 
> getting some interesting results with the PVS opcodes.  However, at some 
> amount of time, I start getting a semi-rhythmic clicking in the sound, not 
> with note attacks but in the course of sustained notes.
>
> I'm running on WinXP using a Creative SoundBlaster Live! external sound 
> card (USB).
>
> A minimal CSD follows (just passing unaltered audio signal through PVS 
> without any effects) that duplicates the problem for me.  I would 
> appreciate any advice.
>
> - Dave
>
> --- cut here---
>
> 
> 
>
> --expression-opt -g -B 16484 -b 4096 -i adc1 -W -o dac1
>
> 
> 
>
> sr = 44100
> ksmps = 2
> nchnls = 1
>
> instr 1
> asig in
> fsig pvsanal asig, 4096, 512, 8192, 0
> asyn pvsynth fsig
> out asyn
> endin
>
> 
> 
>
> i1 0 3600
> e
>
> 
> 
>
>
> -- 
> http://mysterybear.net
> http://twitter.com/DaveSeidel
> http://daveseidel.tumblr.com
>
>
>
> 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"

Whoops, sorry, the problem occurs even of I remove he PVS stuff and just 
send asig from in to out.

So it looks like I have a more basic problem than I thought.  Any clues 
would be welcome.  Increasing ksmps just makes the clicking occur even 
sooner.

- Dave

Dave Seidel wrote:
> Hi all,
> 
> I am, for the first time, trying to work with realtime input and output 
> together to process signal from external sources (so far, a Nintendo DS 
> Lite with the Korg DS-10 emulator).  I have it basically working, and am 
> getting some interesting results with the PVS opcodes.  However, at some 
> amount of time, I start getting a semi-rhythmic clicking in the sound, 
> not with note attacks but in the course of sustained notes.
> 
> I'm running on WinXP using a Creative SoundBlaster Live! external sound 
> card (USB).
> 
> A minimal CSD follows (just passing unaltered audio signal through PVS 
> without any effects) that duplicates the problem for me.  I would 
> appreciate any advice.
> 
> - Dave
> 
> --- cut here---
> 
> 
> 
> 
> --expression-opt -g -B 16484 -b 4096 -i adc1 -W -o dac1
> 
> 
> 
> 
> sr    =    44100
> ksmps    =    2
> nchnls    =    1
> 
>     instr    1
> asig    in
> fsig    pvsanal        asig, 4096, 512, 8192, 0
> asyn    pvsynth        fsig
>     out        asyn
>     endin
> 
> 
> 
> 
> i1 0 3600
> e
> 
> 
> 
> 
> 

Hi Dave,

What hardware and hardware driver are you using?

steven

On Sat, Sep 26, 2009 at 5:07 PM, Dave Seidel  wrote:
> Whoops, sorry, the problem occurs even of I remove he PVS stuff and just
> send asig from in to out.
>
> So it looks like I have a more basic problem than I thought.  Any clues
> would be welcome.  Increasing ksmps just makes the clicking occur even
> sooner.
>
> - Dave
>
> Dave Seidel wrote:
>>
>> Hi all,
>>
>> I am, for the first time, trying to work with realtime input and output
>> together to process signal from external sources (so far, a Nintendo DS Lite
>> with the Korg DS-10 emulator).  I have it basically working, and am getting
>> some interesting results with the PVS opcodes.  However, at some amount of
>> time, I start getting a semi-rhythmic clicking in the sound, not with note
>> attacks but in the course of sustained notes.
>>
>> I'm running on WinXP using a Creative SoundBlaster Live! external sound
>> card (USB).
>>
>> A minimal CSD follows (just passing unaltered audio signal through PVS
>> without any effects) that duplicates the problem for me.  I would appreciate
>> any advice.
>>
>> - Dave
>>
>> --- cut here---
>>
>> 
>> 
>>
>> --expression-opt -g -B 16484 -b 4096 -i adc1 -W -o dac1
>>
>> 
>> 
>>
>> sr    =    44100
>> ksmps    =    2
>> nchnls    =    1
>>
>>    instr    1
>> asig    in
>> fsig    pvsanal        asig, 4096, 512, 8192, 0
>> asyn    pvsynth        fsig
>>    out        asyn
>>    endin
>>
>> 
>> 
>>
>> i1 0 3600
>> e
>>
>> 
>> 
>>
>>
>
> --
> http://mysterybear.net
> http://twitter.com/DaveSeidel
> http://daveseidel.tumblr.com
>
>
>
> 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"

use cpsmidinn instead of cpspch.

Hope this helps,
Mike

On 9/26/09, chi ball  wrote:
>
>
>
> Hi, I have this problem:
>
> I would play notes:  A4,C5,E5.
> MIDI numbers are: 69,72,76
> cps are:              8.09,9.00,9.04
>
>
> In .sco file I would enter the "midi numbers"  in place ot "cps", like this:
>
> ;                        amp        pitch             ifn     imeth
> i1      0       1      20000     69                 0       1
> i1      1       .       .              72
> i1      2       .       .              76
> e
>
> What must I change in the .orc file to do it?
>
> This is the .orc file:
>
>         instr   1
> icps    =       (p10 == 0 ? cpspch(p5) : cpspch(p10))
> asig    pluck   p4,cpspch(p5),icps,p6,p7,p8,p9
>         out     asig
>         endin
>
> Thanks,
> E.
>  		 	   		
> _________________________________________________________________
> Messenger 2009: vieni a scoprire tutte le novità!
> http://www.messenger.it/
> Send bugs reports to this list.
> To unsubscribe, send email sympa@lists.bath.ac.uk with body "unsubscribe
> csound"


-- 
Michael Gogins
Irreducible Productions
http://www.michael-gogins.com
Michael dot Gogins at gmail dot com


Send bugs reports to this list.
To unsubscribe, send email sympa@lists.bath.ac.uk with body "unsubscribe csound"

Yes. I am talking about the current version of Csound.

Regards,
Mike

On 9/26/09, chi ball  wrote:
>
>
> I've tried "cpsmidinn", but give me errors..
> Perhaps because I use the an old version  (DirectCSound)...?
>
>
>
>> Date: Sat, 26 Sep 2009 17:21:11 -0400
>> From: michael.gogins@gmail.com
>> To: csound@lists.bath.ac.uk
>> Subject: [Csnd] Re: cpspch - midi
>>
>> use cpsmidinn instead of cpspch.
>>
>> Hope this helps,
>> Mike
>>
>> On 9/26/09, chi ball  wrote:
>> >
>> >
>> >
>> > Hi, I have this problem:
>> >
>> > I would play notes:  A4,C5,E5.
>> > MIDI numbers are: 69,72,76
>> > cps are:              8.09,9.00,9.04
>> >
>> >
>> > In .sco file I would enter the "midi numbers"  in place ot "cps", like
>> > this:
>> >
>> > ;                        amp        pitch             ifn     imeth
>> > i1      0       1      20000     69                 0       1
>> > i1      1       .       .              72
>> > i1      2       .       .              76
>> > e
>> >
>> > What must I change in the .orc file to do it?
>> >
>> > This is the .orc file:
>> >
>> >         instr   1
>> > icps    =       (p10 == 0 ? cpspch(p5) : cpspch(p10))
>> > asig    pluck   p4,cpspch(p5),icps,p6,p7,p8,p9
>> >         out     asig
>> >         endin
>> >
>> > Thanks,
>> > E.
>> >  		 	   		
>> > _________________________________________________________________
>> > Messenger 2009: vieni a scoprire tutte le novità!
>> > http://www.messenger.it/
>> > Send bugs reports to this list.
>> > To unsubscribe, send email sympa@lists.bath.ac.uk with body "unsubscribe
>> > csound"
>>
>>
>> --
>> Michael Gogins
>> Irreducible Productions
>> http://www.michael-gogins.com
>> Michael dot Gogins at gmail dot com
>>
>>
>> Send bugs reports to this list.
>> To unsubscribe, send email sympa@lists.bath.ac.uk with body "unsubscribe
>> csound"
>  		 	   		
> _________________________________________________________________
> Messenger 2009: vieni a scoprire tutte le novità!
> http://www.messenger.it/
> Send bugs reports to this list.
> To unsubscribe, send email sympa@lists.bath.ac.uk with body "unsubscribe
> csound"


-- 
Michael Gogins
Irreducible Productions
http://www.michael-gogins.com
Michael dot Gogins at gmail dot com


Send bugs reports to this list.
To unsubscribe, send email sympa@lists.bath.ac.uk with body "unsubscribe csound"

Thanks, Victor.

Turns out the fundamental problem was USB contention -- I only have one 
good port on my laptop, and everything goes through a powered 2.0 hub 
(external soundcard, mouse, external drive, ...).  I disconnected the 
drive, and the stuttering went away.

I also followed your suggestions regarding buffer sizes etc.  It is 
working very well now, even with pvsmooth, pvsblur, and pvshift in the 
signal chain!

- Dave

victor wrote:
> I'd say two things: your buffers are too large and your ksmps is two
> small. I would also suggest using hanning window (1) instead of hamming (0)
> and smaller analysis frame (1024 or 2048).
> 
> Victor
> 
> ----- Original Message ----- From: "Dave Seidel" 
> To: 
> Sent: Saturday, September 26, 2009 9:57 PM
> Subject: [Csnd] help with realtime PVS
> 
> 
>> Hi all,
>>
>> I am, for the first time, trying to work with realtime input and 
>> output together to process signal from external sources (so far, a 
>> Nintendo DS Lite with the Korg DS-10 emulator).  I have it basically 
>> working, and am getting some interesting results with the PVS 
>> opcodes.  However, at some amount of time, I start getting a 
>> semi-rhythmic clicking in the sound, not with note attacks but in the 
>> course of sustained notes.
>>
>> I'm running on WinXP using a Creative SoundBlaster Live! external 
>> sound card (USB).
>>
>> A minimal CSD follows (just passing unaltered audio signal through PVS 
>> without any effects) that duplicates the problem for me.  I would 
>> appreciate any advice.
>>
>> - Dave
>>
>> --- cut here---
>>
>> 
>> 
>>
>> --expression-opt -g -B 16484 -b 4096 -i adc1 -W -o dac1
>>
>> 
>> 
>>
>> sr = 44100
>> ksmps = 2
>> nchnls = 1
>>
>> instr 1
>> asig in
>> fsig pvsanal asig, 4096, 512, 8192, 0
>> asyn pvsynth fsig
>> out asyn
>> endin
>>
>> 
>> 
>>
>> i1 0 3600
>> e
>>
>> 
>> 
>>
>>
>> -- 
>> http://mysterybear.net
>> http://twitter.com/DaveSeidel
>> http://daveseidel.tumblr.com
>>
>>
>>
>> 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"
> 
>