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[Cs-dev] statevar bug?

Date2011-04-24 11:49
Fromjoachim heintz
Subject[Cs-dev] statevar bug?
Hi -
I can't hear any change when I change the kq parameter of the statevar
filter (bandpass output). Example below; thanks for having a look -
	joachim



instr 1
asig      rand      0dbfs/2
kq        linseg    1, p3, 100
ahp,alp,abp,abr statevar asig, 1000, kq
aout      balance   abp, asig
          out       aout
endin


i 1 0 10



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Date2011-04-24 15:42
FromVictor Lazzarini
SubjectRe: [Cs-dev] statevar bug?
It's not really a bug; statevar has stringent controls over the  
resonance so that the filter does not explode. This means that with
the default settings (3 times oversampling) Q is limited to less than  
1. I am looking to relax this constraint, but this will mean the filter
can explode occasionally.

Victor

On 24 Apr 2011, at 11:49, joachim heintz wrote:

> Hi -
> I can't hear any change when I change the kq parameter of the statevar
> filter (bandpass output). Example below; thanks for having a look -
> 	joachim
>
> 
> 
> instr 1
> asig      rand      0dbfs/2
> kq        linseg    1, p3, 100
> ahp,alp,abp,abr statevar asig, 1000, kq
> aout      balance   abp, asig
>          out       aout
> endin
> 
> 
> i 1 0 10
> 
> 
>
> ------------------------------------------------------------------------------
> Fulfilling the Lean Software Promise
> Lean software platforms are now widely adopted and the benefits have  
> been
> demonstrated beyond question. Learn why your peers are replacing JEE
> containers with lightweight application servers - and what you can  
> gain
> from the move. http://p.sf.net/sfu/vmware-sfemails
> _______________________________________________
> Csound-devel mailing list
> Csound-devel@lists.sourceforge.net
> https://lists.sourceforge.net/lists/listinfo/csound-devel

Dr Victor Lazzarini
Senior Lecturer
Dept. of Music
NUI Maynooth Ireland
tel.: +353 1 708 3545
Victor dot Lazzarini AT nuim dot ie




------------------------------------------------------------------------------
Fulfilling the Lean Software Promise
Lean software platforms are now widely adopted and the benefits have been 
demonstrated beyond question. Learn why your peers are replacing JEE 
containers with lightweight application servers - and what you can gain 
from the move. http://p.sf.net/sfu/vmware-sfemails
_______________________________________________
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Date2011-04-24 15:44
FromVictor Lazzarini
SubjectRe: [Cs-dev] statevar bug?
Also, I guess 'resonance' is a better term to describe the parameter  
instead of plain Q. Maybe the manual needs to change.
I'll look into it.

Victor
On 24 Apr 2011, at 11:49, joachim heintz wrote:

> Hi -
> I can't hear any change when I change the kq parameter of the statevar
> filter (bandpass output). Example below; thanks for having a look -
> 	joachim
>
> 
> 
> instr 1
> asig      rand      0dbfs/2
> kq        linseg    1, p3, 100
> ahp,alp,abp,abr statevar asig, 1000, kq
> aout      balance   abp, asig
>          out       aout
> endin
> 
> 
> i 1 0 10
> 
> 
>
> ------------------------------------------------------------------------------
> Fulfilling the Lean Software Promise
> Lean software platforms are now widely adopted and the benefits have  
> been
> demonstrated beyond question. Learn why your peers are replacing JEE
> containers with lightweight application servers - and what you can  
> gain
> from the move. http://p.sf.net/sfu/vmware-sfemails
> _______________________________________________
> Csound-devel mailing list
> Csound-devel@lists.sourceforge.net
> https://lists.sourceforge.net/lists/listinfo/csound-devel

Dr Victor Lazzarini
Senior Lecturer
Dept. of Music
NUI Maynooth Ireland
tel.: +353 1 708 3545
Victor dot Lazzarini AT nuim dot ie




------------------------------------------------------------------------------
Fulfilling the Lean Software Promise
Lean software platforms are now widely adopted and the benefits have been 
demonstrated beyond question. Learn why your peers are replacing JEE 
containers with lightweight application servers - and what you can gain 
from the move. http://p.sf.net/sfu/vmware-sfemails
_______________________________________________
Csound-devel mailing list
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Date2011-04-24 16:22
Fromjoachim heintz
SubjectRe: [Cs-dev] statevar bug?
I think this is a good idea as Q is usually understood as the cf to bw
ratio (as far as I know).
Thanks for having a look -
	joachim

Am 24.04.2011 16:44, schrieb Victor Lazzarini:
> Also, I guess 'resonance' is a better term to describe the parameter  
> instead of plain Q. Maybe the manual needs to change.
> I'll look into it.
> 
> Victor
> On 24 Apr 2011, at 11:49, joachim heintz wrote:
> 
>> Hi -
>> I can't hear any change when I change the kq parameter of the statevar
>> filter (bandpass output). Example below; thanks for having a look -
>> 	joachim
>>
>> 
>> 
>> instr 1
>> asig      rand      0dbfs/2
>> kq        linseg    1, p3, 100
>> ahp,alp,abp,abr statevar asig, 1000, kq
>> aout      balance   abp, asig
>>          out       aout
>> endin
>> 
>> 
>> i 1 0 10
>> 
>> 
>>
>> ------------------------------------------------------------------------------
>> Fulfilling the Lean Software Promise
>> Lean software platforms are now widely adopted and the benefits have  
>> been
>> demonstrated beyond question. Learn why your peers are replacing JEE
>> containers with lightweight application servers - and what you can  
>> gain
>> from the move. http://p.sf.net/sfu/vmware-sfemails
>> _______________________________________________
>> Csound-devel mailing list
>> Csound-devel@lists.sourceforge.net
>> https://lists.sourceforge.net/lists/listinfo/csound-devel
> 
> Dr Victor Lazzarini
> Senior Lecturer
> Dept. of Music
> NUI Maynooth Ireland
> tel.: +353 1 708 3545
> Victor dot Lazzarini AT nuim dot ie
> 
> 
> 
> 
> ------------------------------------------------------------------------------
> Fulfilling the Lean Software Promise
> Lean software platforms are now widely adopted and the benefits have been 
> demonstrated beyond question. Learn why your peers are replacing JEE 
> containers with lightweight application servers - and what you can gain 
> from the move. http://p.sf.net/sfu/vmware-sfemails
> _______________________________________________
> Csound-devel mailing list
> Csound-devel@lists.sourceforge.net
> https://lists.sourceforge.net/lists/listinfo/csound-devel
> 

------------------------------------------------------------------------------
Fulfilling the Lean Software Promise
Lean software platforms are now widely adopted and the benefits have been 
demonstrated beyond question. Learn why your peers are replacing JEE 
containers with lightweight application servers - and what you can gain 
from the move. http://p.sf.net/sfu/vmware-sfemails
_______________________________________________
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Date2011-04-24 16:43
FromVictor Lazzarini
SubjectRe: [Cs-dev] statevar bug?
Well, I have not measured it, so this definition might still apply to  
this particular filter.

Victor
On 24 Apr 2011, at 16:22, joachim heintz wrote:

> I think this is a good idea as Q is usually understood as the cf to bw
> ratio (as far as I know).
> Thanks for having a look -
> 	joachim
>
> Am 24.04.2011 16:44, schrieb Victor Lazzarini:
>> Also, I guess 'resonance' is a better term to describe the parameter
>> instead of plain Q. Maybe the manual needs to change.
>> I'll look into it.
>>
>> Victor
>> On 24 Apr 2011, at 11:49, joachim heintz wrote:
>>
>>> Hi -
>>> I can't hear any change when I change the kq parameter of the  
>>> statevar
>>> filter (bandpass output). Example below; thanks for having a look -
>>> 	joachim
>>>
>>> 
>>> 
>>> instr 1
>>> asig      rand      0dbfs/2
>>> kq        linseg    1, p3, 100
>>> ahp,alp,abp,abr statevar asig, 1000, kq
>>> aout      balance   abp, asig
>>>         out       aout
>>> endin
>>> 
>>> 
>>> i 1 0 10
>>> 
>>> 
>>>
>>> ------------------------------------------------------------------------------
>>> Fulfilling the Lean Software Promise
>>> Lean software platforms are now widely adopted and the benefits have
>>> been
>>> demonstrated beyond question. Learn why your peers are replacing JEE
>>> containers with lightweight application servers - and what you can
>>> gain
>>> from the move. http://p.sf.net/sfu/vmware-sfemails
>>> _______________________________________________
>>> Csound-devel mailing list
>>> Csound-devel@lists.sourceforge.net
>>> https://lists.sourceforge.net/lists/listinfo/csound-devel
>>
>> Dr Victor Lazzarini
>> Senior Lecturer
>> Dept. of Music
>> NUI Maynooth Ireland
>> tel.: +353 1 708 3545
>> Victor dot Lazzarini AT nuim dot ie
>>
>>
>>
>>
>> ------------------------------------------------------------------------------
>> Fulfilling the Lean Software Promise
>> Lean software platforms are now widely adopted and the benefits  
>> have been
>> demonstrated beyond question. Learn why your peers are replacing JEE
>> containers with lightweight application servers - and what you can  
>> gain
>> from the move. http://p.sf.net/sfu/vmware-sfemails
>> _______________________________________________
>> Csound-devel mailing list
>> Csound-devel@lists.sourceforge.net
>> https://lists.sourceforge.net/lists/listinfo/csound-devel
>>
>
> ------------------------------------------------------------------------------
> Fulfilling the Lean Software Promise
> Lean software platforms are now widely adopted and the benefits have  
> been
> demonstrated beyond question. Learn why your peers are replacing JEE
> containers with lightweight application servers - and what you can  
> gain
> from the move. http://p.sf.net/sfu/vmware-sfemails
> _______________________________________________
> Csound-devel mailing list
> Csound-devel@lists.sourceforge.net
> https://lists.sourceforge.net/lists/listinfo/csound-devel

Dr Victor Lazzarini
Senior Lecturer
Dept. of Music
NUI Maynooth Ireland
tel.: +353 1 708 3545
Victor dot Lazzarini AT nuim dot ie




------------------------------------------------------------------------------
Fulfilling the Lean Software Promise
Lean software platforms are now widely adopted and the benefits have been 
demonstrated beyond question. Learn why your peers are replacing JEE 
containers with lightweight application servers - and what you can gain 
from the move. http://p.sf.net/sfu/vmware-sfemails
_______________________________________________
Csound-devel mailing list
Csound-devel@lists.sourceforge.net