I've been having trouble with rezzy, particularly in LPF mode.
Lowering the frequency to a certain point in my instrument tends to
lead to the output "exploding", with the point varying a bit based on
the resonance.

I decided to take a look at the manual example figuring I'm using it
wrong, but the manual example seem to explode too creating infinite
samples out of range.

Is there a problem with the opcode, or is the issue with the example?

This was tested with Csound 6.04.

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I can confirm that the manual example of rezzy blows up at the end of the 
first two events. running on Linux with 6.06 
==John

On Thu, 1 Oct 2015, Kevin Welsh wrote:

> I've been having trouble with rezzy, particularly in LPF mode.
> Lowering the frequency to a certain point in my instrument tends to
> lead to the output "exploding", with the point varying a bit based on
> the resonance.
>
> I decided to take a look at the manual example figuring I'm using it
> wrong, but the manual example seem to explode too creating infinite
> samples out of range.
>
> Is there a problem with the opcode, or is the issue with the example?
>
> This was tested with Csound 6.04.
>
> ------------------------------------------------------------------------------
> _______________________________________________
> Csound-users mailing list
> Csound-users@lists.sourceforge.net
> https://lists.sourceforge.net/lists/listinfo/csound-users
> Send bugs reports to
>        https://github.com/csound/csound/issues
> Discussions of bugs and features can be posted here
>

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I think this filter is (by nature) unstable, and should be approached with care.
========================
Dr Victor Lazzarini
Dean of Arts, Celtic Studies and Philosophy,
Maynooth University,
Maynooth, Co Kildare, Ireland
Tel: 00 353 7086936
Fax: 00 353 1 7086952 

> On 1 Oct 2015, at 09:40, jpff  wrote:
> 
> I can confirm that the manual example of rezzy blows up at the end of the 
> first two events. running on Linux with 6.06 
> ==John
> 
> On Thu, 1 Oct 2015, Kevin Welsh wrote:
> 
>> I've been having trouble with rezzy, particularly in LPF mode.
>> Lowering the frequency to a certain point in my instrument tends to
>> lead to the output "exploding", with the point varying a bit based on
>> the resonance.
>> 
>> I decided to take a look at the manual example figuring I'm using it
>> wrong, but the manual example seem to explode too creating infinite
>> samples out of range.
>> 
>> Is there a problem with the opcode, or is the issue with the example?
>> 
>> This was tested with Csound 6.04.
>> 
>> ------------------------------------------------------------------------------
>> _______________________________________________
>> Csound-users mailing list
>> Csound-users@lists.sourceforge.net
>> https://lists.sourceforge.net/lists/listinfo/csound-users
>> Send bugs reports to
>>       https://github.com/csound/csound/issues
>> Discussions of bugs and features can be posted here
>> 
> 
> ------------------------------------------------------------------------------
> _______________________________________________
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> Csound-users@lists.sourceforge.net
> https://lists.sourceforge.net/lists/listinfo/csound-users
> Send bugs reports to
>        https://github.com/csound/csound/issues
> Discussions of bugs and features can be posted here


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I figured that might be part of it, but it's odd to me that the
opcode's default mode (0/lpf) seems so much more unstable than when
run in hpf mode, where I can't seem to make it bomb out with any
semi-reasonable inputs.

If that is the case and the opcode is working as expected, should the
manual give a warning about it's instability?  And should the example
be altered to behave a little better?

On Thu, Oct 1, 2015 at 4:48 AM, Victor Lazzarini
 wrote:
> I think this filter is (by nature) unstable, and should be approached with care.
> ========================
> Dr Victor Lazzarini
> Dean of Arts, Celtic Studies and Philosophy,
> Maynooth University,
> Maynooth, Co Kildare, Ireland
> Tel: 00 353 7086936
> Fax: 00 353 1 7086952
>
>> On 1 Oct 2015, at 09:40, jpff  wrote:
>>
>> I can confirm that the manual example of rezzy blows up at the end of the
>> first two events. running on Linux with 6.06
>> ==John
>>
>> On Thu, 1 Oct 2015, Kevin Welsh wrote:
>>
>>> I've been having trouble with rezzy, particularly in LPF mode.
>>> Lowering the frequency to a certain point in my instrument tends to
>>> lead to the output "exploding", with the point varying a bit based on
>>> the resonance.
>>>
>>> I decided to take a look at the manual example figuring I'm using it
>>> wrong, but the manual example seem to explode too creating infinite
>>> samples out of range.
>>>
>>> Is there a problem with the opcode, or is the issue with the example?
>>>
>>> This was tested with Csound 6.04.
>>>
>>> ------------------------------------------------------------------------------
>>> _______________________________________________
>>> Csound-users mailing list
>>> Csound-users@lists.sourceforge.net
>>> https://lists.sourceforge.net/lists/listinfo/csound-users
>>> Send bugs reports to
>>>       https://github.com/csound/csound/issues
>>> Discussions of bugs and features can be posted here
>>>
>>
>> ------------------------------------------------------------------------------
>> _______________________________________________
>> Csound-users mailing list
>> Csound-users@lists.sourceforge.net
>> https://lists.sourceforge.net/lists/listinfo/csound-users
>> Send bugs reports to
>>        https://github.com/csound/csound/issues
>> Discussions of bugs and features can be posted here
>
>
> ------------------------------------------------------------------------------
> _______________________________________________
> Csound-users mailing list
> Csound-users@lists.sourceforge.net
> https://lists.sourceforge.net/lists/listinfo/csound-users
> Send bugs reports to
>         https://github.com/csound/csound/issues
> Discussions of bugs and features can be posted here

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Probably.
========================
Dr Victor Lazzarini
Dean of Arts, Celtic Studies and Philosophy,
Maynooth University,
Maynooth, Co Kildare, Ireland
Tel: 00 353 7086936
Fax: 00 353 1 7086952 

> On 1 Oct 2015, at 10:20, Kevin Welsh  wrote:
> 
> I figured that might be part of it, but it's odd to me that the
> opcode's default mode (0/lpf) seems so much more unstable than when
> run in hpf mode, where I can't seem to make it bomb out with any
> semi-reasonable inputs.
> 
> If that is the case and the opcode is working as expected, should the
> manual give a warning about it's instability?  And should the example
> be altered to behave a little better?
> 
> On Thu, Oct 1, 2015 at 4:48 AM, Victor Lazzarini
>  wrote:
>> I think this filter is (by nature) unstable, and should be approached with care.
>> ========================
>> Dr Victor Lazzarini
>> Dean of Arts, Celtic Studies and Philosophy,
>> Maynooth University,
>> Maynooth, Co Kildare, Ireland
>> Tel: 00 353 7086936
>> Fax: 00 353 1 7086952
>> 
>>> On 1 Oct 2015, at 09:40, jpff  wrote:
>>> 
>>> I can confirm that the manual example of rezzy blows up at the end of the
>>> first two events. running on Linux with 6.06
>>> ==John
>>> 
>>> On Thu, 1 Oct 2015, Kevin Welsh wrote:
>>> 
>>>> I've been having trouble with rezzy, particularly in LPF mode.
>>>> Lowering the frequency to a certain point in my instrument tends to
>>>> lead to the output "exploding", with the point varying a bit based on
>>>> the resonance.
>>>> 
>>>> I decided to take a look at the manual example figuring I'm using it
>>>> wrong, but the manual example seem to explode too creating infinite
>>>> samples out of range.
>>>> 
>>>> Is there a problem with the opcode, or is the issue with the example?
>>>> 
>>>> This was tested with Csound 6.04.
>>>> 
>>>> ------------------------------------------------------------------------------
>>>> _______________________________________________
>>>> Csound-users mailing list
>>>> Csound-users@lists.sourceforge.net
>>>> https://lists.sourceforge.net/lists/listinfo/csound-users
>>>> Send bugs reports to
>>>>      https://github.com/csound/csound/issues
>>>> Discussions of bugs and features can be posted here
>>>> 
>>> 
>>> ------------------------------------------------------------------------------
>>> _______________________________________________
>>> Csound-users mailing list
>>> Csound-users@lists.sourceforge.net
>>> https://lists.sourceforge.net/lists/listinfo/csound-users
>>> Send bugs reports to
>>>       https://github.com/csound/csound/issues
>>> Discussions of bugs and features can be posted here
>> 
>> 
>> ------------------------------------------------------------------------------
>> _______________________________________________
>> Csound-users mailing list
>> Csound-users@lists.sourceforge.net
>> https://lists.sourceforge.net/lists/listinfo/csound-users
>> Send bugs reports to
>>        https://github.com/csound/csound/issues
>> Discussions of bugs and features can be posted here
> 
> ------------------------------------------------------------------------------
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I think it was stable at one time.  I haven't tried it lately.

Hans Mikelson


> On Oct 1, 2015, at 5:56 AM, Victor Lazzarini  wrote:
> 
> Probably.
> ========================
> Dr Victor Lazzarini
> Dean of Arts, Celtic Studies and Philosophy,
> Maynooth University,
> Maynooth, Co Kildare, Ireland
> Tel: 00 353 7086936
> Fax: 00 353 1 7086952 
> 
>> On 1 Oct 2015, at 10:20, Kevin Welsh  wrote:
>> 
>> I figured that might be part of it, but it's odd to me that the
>> opcode's default mode (0/lpf) seems so much more unstable than when
>> run in hpf mode, where I can't seem to make it bomb out with any
>> semi-reasonable inputs.
>> 
>> If that is the case and the opcode is working as expected, should the
>> manual give a warning about it's instability?  And should the example
>> be altered to behave a little better?
>> 
>> On Thu, Oct 1, 2015 at 4:48 AM, Victor Lazzarini
>>  wrote:
>>> I think this filter is (by nature) unstable, and should be approached with care.
>>> ========================
>>> Dr Victor Lazzarini
>>> Dean of Arts, Celtic Studies and Philosophy,
>>> Maynooth University,
>>> Maynooth, Co Kildare, Ireland
>>> Tel: 00 353 7086936
>>> Fax: 00 353 1 7086952
>>> 
>>>> On 1 Oct 2015, at 09:40, jpff  wrote:
>>>> 
>>>> I can confirm that the manual example of rezzy blows up at the end of the
>>>> first two events. running on Linux with 6.06
>>>> ==John
>>>> 
>>>>> On Thu, 1 Oct 2015, Kevin Welsh wrote:
>>>>> 
>>>>> I've been having trouble with rezzy, particularly in LPF mode.
>>>>> Lowering the frequency to a certain point in my instrument tends to
>>>>> lead to the output "exploding", with the point varying a bit based on
>>>>> the resonance.
>>>>> 
>>>>> I decided to take a look at the manual example figuring I'm using it
>>>>> wrong, but the manual example seem to explode too creating infinite
>>>>> samples out of range.
>>>>> 
>>>>> Is there a problem with the opcode, or is the issue with the example?
>>>>> 
>>>>> This was tested with Csound 6.04.
>>>>> 
>>>>> ------------------------------------------------------------------------------
>>>>> _______________________________________________
>>>>> Csound-users mailing list
>>>>> Csound-users@lists.sourceforge.net
>>>>> https://lists.sourceforge.net/lists/listinfo/csound-users
>>>>> Send bugs reports to
>>>>>     https://github.com/csound/csound/issues
>>>>> Discussions of bugs and features can be posted here
>>>> 
>>>> ------------------------------------------------------------------------------
>>>> _______________________________________________
>>>> Csound-users mailing list
>>>> Csound-users@lists.sourceforge.net
>>>> https://lists.sourceforge.net/lists/listinfo/csound-users
>>>> Send bugs reports to
>>>>      https://github.com/csound/csound/issues
>>>> Discussions of bugs and features can be posted here
>>> 
>>> 
>>> ------------------------------------------------------------------------------
>>> _______________________________________________
>>> Csound-users mailing list
>>> Csound-users@lists.sourceforge.net
>>> https://lists.sourceforge.net/lists/listinfo/csound-users
>>> Send bugs reports to
>>>       https://github.com/csound/csound/issues
>>> Discussions of bugs and features can be posted here
>> 
>> ------------------------------------------------------------------------------
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>> Csound-users@lists.sourceforge.net
>> https://lists.sourceforge.net/lists/listinfo/csound-users
>> Send bugs reports to
>>       https://github.com/csound/csound/issues
>> Discussions of bugs and features can be posted here
> 
> 
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