hex value to audio tone

General Discussion Other

moles26

in General Discussion • Other • 2 months ago

Hello,

Quick question and assuming a simple answer but i'm pretty new to this.

So far my programme loops through and image and prints out the hex value of each pixel as a negative integer, it then resets when it gets to the end of the picture.

I was wondering how it would be best to link the integer value to a simple audio tone using minim, where the pitch of the tone gets higher or lower depending on the colour?

thanks for your time.

Replies(4)

GoToLoop

Re: hex value to audio tone

2 months ago

Maybe map() -> http://processing.org/reference/map_.html

Also, you may try long data-type to avoid negative values -> http://processing.org/reference/long.html

int  a = #FFFFFF;
long b = #A0CFD0L;
long c = get(50, 50) & #FFFFFFL;

println(a);
println(b);
println(c);

exit();

PhiLho

Re: hex value to audio tone

2 months ago

About these negative values and how to use color:

What is a color in Processing?

moles26

Re: hex value to audio tone

2 months ago

Thanks :)

and how would i get the value to effect the tone such as this line;

// given start time, duration, and frequency

out.playNote( 0.0, 0.9, 97.99 );

PhiLho

Re: hex value to audio tone

2 months ago

What "value"?

Color isn't a simple value, it is made of at least three values (the color channels), usually RGB, can be HSB in Processing or other channels with other systems.

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