// Quick example of filling an array from the adc // we must suck samples from adc, blackhole does this (dac would too) // gain UG is there to make sure adc is disconnected at end of run adc => Gain input => blackhole; 4096 => int SIZE; int myArray[SIZE]; while (true) { for (0 => int i; i < SIZE; i++) { 32768 * input.last() $ int => myArray[i]; // make floats into ints 1.0 :: samp => now; // do this each sample } // do useful things to your array, or spork a function to do that } On Jun 7, 2013, at 10:19 AM, chuck-users-request@lists.cs.princeton.edu wrote:

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Today's Topics:

1. Re: Get audio samples of adc (fernando alonso) 2. Re: chuck-users Digest, Vol 95, Issue 4 (Casper Schipper)

----------------------------------------------------------------------

Message: 1 Date: Fri, 7 Jun 2013 18:05:40 +0200 From: fernando alonso To: ChucK Users Mailing List Subject: Re: [chuck-users] Get audio samples of adc Message-ID: Content-Type: text/plain; charset=ISO-8859-1

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:

adc.chan(0) => UGen inputMic;

Thanks for the help!

2013/6/7 Aur?lien Bondis :

...

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... Aur?lien.

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 Mart?n Lualobus@gmail.com http://roboticnaturalinteraction.com _______________________________________________ chuck-users mailing list chuck-users@lists.cs.princeton.edu https://lists.cs.princeton.edu/mailman/listinfo/chuck-users

---

chuck-users mailing list chuck-users@lists.cs.princeton.edu https://lists.cs.princeton.edu/mailman/listinfo/chuck-users

-- Fernando Alonso Mart?n Lualobus@gmail.com http://roboticnaturalinteraction.com

------------------------------

Message: 2 Date: Fri, 7 Jun 2013 19:19:22 +0200 From: Casper Schipper To: chuck-users@lists.cs.princeton.edu Subject: Re: [chuck-users] chuck-users Digest, Vol 95, Issue 4 Message-ID: Content-Type: text/plain; charset="iso-8859-1"

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[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 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[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:

adc.chan(0) => UGen inputMic;

Thanks for the help!

Casper Schipper casper.schipper@gmail.com www.casperschipper.nl +316 52322590

On 7 jun. 2013, at 18:00, chuck-users-request@lists.cs.princeton.eduwrote:

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When replying, please edit your Subject line so it is more specific 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: *Aur?lien Bondis *Subject: **Re: [chuck-users] Get audio samples of adc* *Date: *7 juni 2013 17:48:51 CEST *To: *ChucK Users Mailing List *Reply-To: *ChucK Users Mailing List

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... Aur?lien.

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 Mart?n Lualobus@gmail.com http://roboticnaturalinteraction.com _______________________________________________ chuck-users mailing list chuck-users@lists.cs.princeton.edu https://lists.cs.princeton.edu/mailman/listinfo/chuck-users

*From: *Michael Heuer *Subject: **Re: [chuck-users] EspGrid 0.42* *Date: *7 juni 2013 17:56:23 CEST *To: *ChucK Users Mailing List *Reply-To: *ChucK Users Mailing List

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 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, SSHRC). The software and some additional helpful files (code/patches) can be downloaded here: http://esp.mcmaster.ca/EspGrid-0.42-OSX-10.7.zip

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: http://code.google.com/p/espgrid

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 McMaster University, Hamilton, Canada

http://esp.mcmaster.ca http://davidogborn.net http://twitter.com/d0kt0r0 1-905-525-9140 ext 27603

_______________________________________________ chuck-users mailing list chuck-users@lists.cs.princeton.edu https://lists.cs.princeton.edu/mailman/listinfo/chuck-users

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