# [chuck-users] chuck-users Digest, Vol 95, Issue 4

Casper Schipper casper.schipper at gmail.com
Fri Jun 7 13:19:22 EDT 2013

```Hey,

You can collect the values from the ADC by calling it's .last() method.

so for example:

float values[32];
int i;

for (int i;i<values.size;i++) {
samp => now;
}

I think what is confusing you is that chuck ugens works sample by sample
and not by sending a vector like other languages.

Does this help ?

Happy chucking,
Casper

On Fri, Jun 7, 2013 at 7:19 PM, Casper Schipper
<casper.schipper at gmail.com>wrote:

>
> Hey,
>
> You can collect the values from the ADC by calling it's .last() method.
>
> so for example:
>
> float values[32];
> int i;
>
> for (int i;i<values.size;i++) {
> samp => now;
> }
>
> I think what is confusing you is that chuck ugens works sample by sample
> and not by sending a vector like other languages.
>
> Does this help ?
>
> Happy chucking,
> Casper
>
>
>
> Thanks for the fast reply. I have write this code:
>
>
> fun int[] discreteHaarWaveletTransform( int input[]){
>     int sum, difference,length,i;
>     int  output[input.cap()];
>
>
>     for ( (input.cap() >> 1) => length ; true ;  (length >> 1) => length) {
>         for (0 => i; i < length; ++i) {
>             input[i * 2] + input[i * 2 + 1] => sum;
>             input[i * 2] - input[i * 2 + 1] => difference;
>             sum => output[i] ;
>             difference => output[length + i];
>         }
>         if (length == 1) {
>             return output;
>         }
>
>         //Swap arrays to do next iteration
>         for (0=>i; i < (length<<1); i++){
>             output[i] => input[i];
>         }
>     }
> }
>
>
>
>
> For this reason I need the int input [] array relating to adc input
> samples.  I need to extract the "raw" values of the input (without
> FFT). I have test with something like that:
>
>
>
> Thanks for the help!
>
>
>
> Casper Schipper
> casper.schipper at gmail.com
> www.casperschipper.nl
> +316 52322590
>
> On 7 jun. 2013, at 18:00, chuck-users-request at lists.cs.princeton.eduwrote:
>
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> than "Re: Contents of chuck-users digest..."
> Today's Topics:
>
>   1. Re: Get audio samples of adc (Aur?lien Bondis)
>   2. Re: EspGrid 0.42 (Michael Heuer)
>
> *From: *Aurélien Bondis <abondis at kerunix.com>
> *Subject: **Re: [chuck-users] Get audio samples of adc*
> *Date: *7 juni 2013 17:48:51 CEST
> *To: *ChucK Users Mailing List <chuck-users at lists.cs.princeton.edu>
> *Reply-To: *ChucK Users Mailing List <chuck-users at lists.cs.princeton.edu>
>
>
> Hi,
> I don't know what a wavelet transform is, but can't 'adc =>' work ? or
> 'LiSa' do what you need?
> (http://chuck.cs.princeton.edu/doc/program/ugen_full.html#LiSa)
> Sorry if I did not understand the question...
> Aurélien.
>
> On Fri, 07 Jun 2013, fernando alonso wrote:
>
> Hi,
>
> I want to program de Wavelet Transform, and for it I need to get the
> audio samples. Do you know some way to get the audio samples?
>
>
> Thanks.
>
> --
> Fernando Alonso Martín
> Lualobus at gmail.com
> http://roboticnaturalinteraction.com
> _______________________________________________
> chuck-users mailing list
> chuck-users at lists.cs.princeton.edu
> https://lists.cs.princeton.edu/mailman/listinfo/chuck-users
>
>
>
>
>
> *From: *Michael Heuer <heuermh at gmail.com>
> *Subject: **Re: [chuck-users] EspGrid 0.42*
> *Date: *7 juni 2013 17:56:23 CEST
> *To: *ChucK Users Mailing List <chuck-users at lists.cs.princeton.edu>
> *Reply-To: *ChucK Users Mailing List <chuck-users at lists.cs.princeton.edu>
>
>
> Hello David,
>
> This looks very cool.
>
> The docs mention an esp.ck ChucK file and I see it in the 0.42 .zip
> file but it is not in the source tree on Google Code.
>
>   michael
>
>
> On Thu, Jun 6, 2013 at 12:00 PM, David Ogborn <ogbornd at mcmaster.ca> wrote:
>
> Dear friends,
>
> I am pleased to announce the official release of version 0.42 of the
> EspGrid
> software - the synchronization and sharing software for laptop ensembles I
> have developed around the Cybernetic Orchestra at McMaster, during the
> project "Scalable, Collective Traditions of Electronic Sound Performance"
> (supported by Canada's Social Sciences and Humanities Research Council,
>
> Over the course of the past year, earlier versions of the software have
> been
> presented at the Toronto Electroacoustic Symposium, the Audio Engineering
> Society Convention in San Francisco, and most recently, the
> live.code.festival in Karlsruhe, Germany.  This 0.42 release is a "clean-up
> release" - with better stability and synchronization.  EspGrid has been
> developed around the ideas of neutrality and hybridity with respect to the
> languages and environments employed by laptop and live coding performers.
> The EspGrid application "sits in the background" and takes care of clock
> synchronization, to a large degree independent of the diverse and multiple
> "foreground" environments in which performers/creators work.  Another
> participant in the live.code.festival session (chair Alex McLean, if I
> recall correctly) provided a perfect example of the intent of the EspGrid
> software: three electronic musicians find themselves on a train together;
> despite all using different languages/tools to make their music, they each
> fire up EspGrid and instantly share a tight common clock and a metronome
> that anyone can control.  Jamming ensues...
>
> The EspGrid software is being made available to community as free and open
> source software (GNU public license version 3).  The code base of the
> software includes a large and growing number of unit tests, and development
> should proceed according to the principles of test-driven development.  The
> rudiments of a help/documentation system are in place.  Binary executables
> exist only for Mac OS X at the present moment but the Windows and Linux
> ports of the software are the highest, immediate priority following this
> release.  Windows and Linux users in mixed laptop ensembles don't need to
> wait for these ports however: there is a "side chain" mechanism that allows
> users/machines without a running grid to piggyback on a user/machine that
> is
> running the grid.
>
> To get/browse the source code, visit the software's Google code site at:
>
> Enjoy - and feel free to get in touch for help/issues with the software.  I
> hope that some of you will find this useful, and look forward to working
> with you on the (gradual) evolution of this tool!
>
> Yours truly,
> David
>
> --------------------------------------------------------------------------
> Dr. David Ogborn, Assistant Professor
> Communication Studies & Multimedia
> Director, Cybernetic Orchestra
>
> http://esp.mcmaster.ca
> http://davidogborn.net
> 1-905-525-9140 ext 27603
>
>
>
>
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