Don't forget zerox for zero crossing detection. Crude pitch detection can be done this way. It isn't as potentially accurate as the method Hans is describing but it is much faster to test. http://chuck.cs.princeton.edu/doc/program/ugen_full.html#zerox --art On Mon, Oct 11, 2010 at 9:59 AM, Hans Aberg wrote:

ChucK has built-in FFT. A question is though to extract a spectrogram.

Note that guitars, like pianos, are inharmonic. A modern piano tuner measures the first few partials of the strings, and then one makes a choice of scale stretch based on that.

On 11 Oct 2010, at 15:46, Sindhuri Kuppasad wrote:

...

I am an engineering (Computer Science) student and want to develop a guitar tuning software.

The basic idea is to play a guitar string, read the sound through a microphone, determine the frequency of the note that was played and accordingly prompt the user to tune the string up or down.

I wanted to know what capabilities ChucK provides to analyse frequency of the analog sound input and how it could be used in implementing the guitar tuning application.

Also, are there any alternate approaches to obtain the frequency using ChucK?

Regards, Sindhuri KN

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You can communicate between a Java or C++ app using OSC. I know there are OSC libs for Java floating around, but it's not too difficult to roll your after reading the spec. It's UDP/IP based. There are osc examples bundled with ChucK, also: http://chuck.cs.princeton.edu/doc/language/event.html#osc http://opensoundcontrol.org/ /Stefan 2010/10/16 Sindhuri Kuppasad

Thanks for that info :)

Also, is there any way i can create a GUI for the guitar tuning application?? or any way that ChucK programs can communicate with either C++ or Java codes?

On Mon, Oct 11, 2010 at 11:56 PM, Adam Tindale wrote:

...

Don't forget zerox for zero crossing detection. Crude pitch detection can be done this way. It isn't as potentially accurate as the method Hans is describing but it is much faster to test.

http://chuck.cs.princeton.edu/doc/program/ugen_full.html#zerox

--art

On Mon, Oct 11, 2010 at 9:59 AM, Hans Aberg wrote:

...

ChucK has built-in FFT. A question is though to extract a spectrogram.

Note that guitars, like pianos, are inharmonic. A modern piano tuner measures the first few partials of the strings, and then one makes a choice of scale stretch based on that.

On 11 Oct 2010, at 15:46, Sindhuri Kuppasad wrote:

...

I am an engineering (Computer Science) student and want to develop a guitar tuning software.

The basic idea is to play a guitar string, read the sound through a microphone, determine the frequency of the note that was played and accordingly prompt the user to tune the string up or down.

I wanted to know what capabilities ChucK provides to analyse frequency of the analog sound input and how it could be used in implementing the guitar tuning application.

Also, are there any alternate approaches to obtain the frequency using ChucK?

Regards, Sindhuri KN

_______________________________________________ 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

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