[Stk] Cracking Issues

[Robin Holmes]

Hello,

I recently created this way of radically speeding up code running in a
JIT using a process called ROD. It can make DSP object trees like STK
run much faster if programmed properly. I specifically created it for
a modular synth I make that uses similar virtual trees and tick
functions. For one sample functions I am expecting a speed up of
double or more but this will only happen later next year as it gets
built.

http://www.pacificv.prophp.us/rod.php

Perhaps you are also making compilers and will check it out for me and
send some feedback on what you think of it.



On 12/22/09, Stephen Sinclair <sinclair at music.mcgill.ca> wrote:
> I wonder if a little FAQ for RtAudio with some of these issues might
> be helpful.  People seem to mistake limiting problems for underruns
> quite often.  Any other common problems that people ask about?
> Compiling with various Windows compilers seems to be a frequent one..
>
> Steve
>
>
> On Tue, Dec 22, 2009 at 6:01 AM, Bruno Ronzani <bruno.ronzani at utbm.fr>
> wrote:
>> Hello Perry,
>>
>> My problem seems to be resolved. Indeed, I was putting some effects on
>> my sounds, and tt was simply that the CPU of the new machine was
>> slower. So I had to optimize those, and now it seems to work
>> perfectly. I had some distortion/clipping problem too, but since I
>> didn't write a proper limiter yet, I simply turned the volume down ;)
>>
>> Thanks everyone for your help !
>>
>> Bruno
>>
>> 2009/12/18 Bruno Ronzani <bruno.ronzani at utbm.fr>:
>>> Hey Perry,
>>>
>>> Thank you for your quick answer. The os I'm using is Microsoft Windows
>>> XP, but soon will be Seven.
>>>
>>> I've checked the audio device rate, and it's 44.1, same as in my
>>> application...
>>>
>>> any other idea ?
>>>
>>> Thank you very much,
>>>
>>>
>>> Bruno
>>>
>>> 2009/12/17 Perry R Cook <prc at cs.princeton.edu>:
>>>> Bruno,
>>>>
>>>> Make sure your audio interface and drivers
>>>> are set to the same sample rate.  For example,
>>>> I know that under ALZA and other drivers on
>>>> LINUX it's possible to open the audio device
>>>> at one rate while it's running at another (44.1
>>>> vs 48 for example).  This causes crackling noise.
>>>>
>>>> PRC
>>>>
>>>> ----- "Bruno Ronzani" <bruno.ronzani at utbm.fr> wrote:
>>>>
>>>>> Hello everyone !
>>>>>
>>>>>
>>>>>
>>>>> I am very sorry to disturb you again... But I made a quite nice ( :p )
>>>>>
>>>>> project using STK.
>>>>>
>>>>> It's working fine on my computer but when I try on another computer I
>>>>>
>>>>> hear crackings.
>>>>>
>>>>>
>>>>>
>>>>> Even when I turn the volume down to 0, the crackings are still there.
>>>>>
>>>>> Very disturbing.
>>>>>
>>>>>
>>>>>
>>>>> I tried to change my buffer size, it affects a bit, but still, I can
>>>>> hear them.
>>>>>
>>>>>
>>>>>
>>>>> What other parameter should I check ?
>>>>>
>>>>>
>>>>>
>>>>> For the information, I made a mixer using OSG (3D library). You can
>>>>>
>>>>> choose between 8 sets and each set is playing 8 wav files at the same
>>>>>
>>>>> time.
>>>>>
>>>>>
>>>>>
>>>>> I checked the frequency of the files and it's the same as in my
>>>>>
>>>>> program : 44 100 Hz.
>>>>>
>>>>>
>>>>>
>>>>> I admit I need some help there..;
>>>>>
>>>>>
>>>>>
>>>>> Thanks a lot everyone !
>>>>>
>>>>>
>>>>>
>>>>> Bruno
>>>>>
>>>>>
>>>>>
>>>>> _______________________________________________
>>>>>
>>>>> Stk mailing list
>>>>>
>>>>> Stk at ccrma.stanford.edu
>>>>>
>>>>> http://ccrma-mail.stanford.edu/mailman/listinfo/stk
>>>>
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>>>>
>>>
>>
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>
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