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 Forum index » DIY Hardware and Software » ChucK programming language
playable ChucK Instruments
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tommy2caps



Joined: Jul 19, 2014
Posts: 1
Location: USA

PostPosted: Sat Jul 19, 2014 1:52 pm    Post subject: playable ChucK Instruments
Subject description: Is it possible to create an instrument in chuck that can be played with the keyboard as an interface
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Hi, I am very new to chuck but incredibly interested by it. I have no experience with code so if this is hard to understand i apologize. I am trying to build an instrument that can be played by hitting notes on the keyboard for example as long as I hold the 'A' key an a 440will sound. is this possible/already exists? please help.
thanks
tom
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jkant



Joined: Dec 14, 2013
Posts: 14
Location: Milan, Italy

PostPosted: Tue Sep 16, 2014 6:21 am    Post subject: Reply with quote  Mark this post and the followings unread

Welcome to the wonderful world of chucK! Smile

You can use human interface device aka hid.

Try to add this shred:

Code:

// human interface device
Hid hid;
// a message to convey data from Hid
HidMsg msg;

// device number
0 => int device;

// try to open keyboard
if (hid.openKeyboard( device ) == false ) me.exit();

<<< "keyboard:", hid.name(), "ready!" >>>;

// sound chain
BeeThree organ => JCRev reverb => dac;
// set params
.05 => reverb.mix;

while(1)
{
    // wait for event
    hid => now;
   
    // get message
    while( hid.recv( msg ))
    {
        // check
        if (msg.isButtonDown() )
        {
            <<< "BUTTON DOWN:", msg.ascii >>>;
           
            // take ascii value and convert to frequency
            msg.ascii => Std.mtof => float freq;
            // if too high then skip
            if( freq > 20000 ) continue;
           
            // set freq
            freq => organ.freq;
            // sound the note
            1 => organ.noteOn;
           
            80::ms => now;
        }
        else // should be a button up event
        {
            <<< "BUTTON UP:", msg.ascii >>>;
            1 => organ.noteOff;
        }
    }
}

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