[PD] grain patch producing clicks

[Hans-Christoph Steiner]

You can get raw mouse data using [hid].  You can get screen  
coordinates using cyclone's [MouseState].

.hc

On Jun 2, 2006, at 12:05 AM, Alexandre Matheson wrote:

> hello everybody,
>
> Thanks again for all the advice and help, I've been busy but still  
> managed to do a few updates to my patch. There are two versions,  
> one that uses gem (for gemmouse) and freeverb, and the other uses  
> no externals and has a data structure gui.
>
> I was wondering if there was an object similar to gemmouse that I  
> can use for my data structure gui version. I want to turn the metro  
> on and off when I click and move around the red square on the 2d  
> control. Is this possible?
>
> I am a PEBKAC
>
> alex
> <gem-lens.zip>
> <lens.zip>
>
> On 24-May-06, at 8:16 PM, Alexandre Matheson wrote:
>
>> hello dafydd, Frank, and list,
>>
>> Thanks for the feedback. I will start making improvements on the  
>> patch as soon as i get over this cold.
>>
>> On 23-May-06, at 1:09 PM, Frank Barknecht wrote:
>>
>>> Hallo,
>>> dafydd hughes hat gesagt: // dafydd hughes wrote:
>>>
>>>> It looks like a mismatch between envelope and sample reading.  The
>>>> clicks seem to happen because the amplitude envelope and the  
>>>> tabread4~
>>>> aren't synchronized.  What happens is the tabread object gets  
>>>> its new
>>>> starting position while the envelope is still in mid-grain.  The
>>>> solution is to make sure each voice is inactive before starting  
>>>> a new
>>>> grain.
>>>>
>>>> David Golightly made a great granular delay line patch (I think  
>>>> based
>>>> on a paper by Ross Bencina) maybe a year and a bit ago which used a
>>>> scheduler to send info to each voice.  As I remember, the scheduler
>>>> kept track of which voices were playing and sent the messages to  
>>>> the
>>>> next available note.  Another way is to let the voice pass the  
>>>> message
>>>> to the next voice if it's already busy.
>>>
>>> I changed the patch to do just that and introduced an abstraction  
>>> for
>>> the voices, because I'm lazy. The blocking is in [pd block] in
>>> pd_voice.pd. However while this gets rid of the clicks, it brings
>>> another problem with the patch to daylight, which you will  
>>> immediatly
>>> hear, if you try it: it doesn't sound like a cloud of grains, but  
>>> very
>>> regular. I didn't understand what the [expr $f1; $f1/1;  
>>> $f1/2 ...] is
>>> supposed to do. In the original patch, the numbers get send to a  
>>> [del]
>>> object where they get translated to a simple bang.
>>>
>>> I once did another granular patch that uses a [phasor~] instead of a
>>> [metro] to drive the grains. Basically the phasor~ output is used to
>>> drive a cosine envelope similar to the packets example in Miller's
>>> docs. It also is used to read out the table with [tabread4~] or a
>>> delay line with [vd~]. [samphold~]'s are used to get click-free
>>> operation. I attached this patch as well (phasorgrain~). It normally
>>> uses Memento to allow comfortable remote control of the settings,  
>>> but
>>> I ripped this part out to not confuse those without Memento.
>>>
>>> Ciao
>>> -- 
>>>  Frank Barknecht                 _ ______footils.org_ __goto10.org__
>>> <help-sk-lens.pd>
>>> <sk-lens.pd>
>>> <pd_voice.pd>
>>> <phasorgrain~.pd>
>>> <phasorgrain~-help.pd>
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>>
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                                            - Dr. Martin Luther King,  
Jr.