[chuck-users] How to ramp pitch?

[Stefan Blixt]

You can try to use Step into Envelope. This is dry coding, and I've had a
few beers, but:

Step s => Envelope e => SinOsc s => dac;

1 => s.next;
0 => s.sync;

220 => e.value;
440 => e.target;
1::second => e.duration;

2::second => now;



On Thu, May 22, 2014 at 10:55 PM, Moisés Gabriel Cachay Tello <
xpktro at gmail.com> wrote:

> I haven't ChucKed for a while, but this can help
>
> Pseudocode:
>
> actual_pitch = 440
> new_pitch = 880
> delta = 1 // -> Increment between steps
>
> while(actual_pitch != new_pitch)
>     if (actual_pitch > new_pitch)
>         delta = -1 // if we're decreasing pitch
>     actual_pitch = actual_pitch + delta //This would be the freq setting
>     advance 1ms
>
>
>
>
> 2014-05-22 15:39 GMT-05:00 Bonnie Eisenman <bmeisenm at princeton.edu>:
>
>> Hi all, sorry if this question has been answered before, but I can't find
>> it in the docs.
>>
>> I'd like to ramp a pitch quickly from one frequency to another. I feel
>> like there should be a better way to do this than what I'm currently using,
>> which is this:
>>
>> // Where length is the # of milliseconds this should take
>> for (0 => int i; i < length $ int; i++) {
>>     f1 - ((i/length) * (f1 - f2)) => float newFreq;
>>     osc.freq(newFreq);
>>     1::ms => now;
>> }
>>
>> This works but it produces an unfortunate clicking noise at the end (and
>> yup, I'm using an envelope). Any tips?
>>
>> Thanks!
>>
>> --Bonnie
>>
>> _______________________________________________
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>> chuck-users at lists.cs.princeton.edu
>> https://lists.cs.princeton.edu/mailman/listinfo/chuck-users
>>
>>
>
>
> --
> -Moisés
>
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>


-- 
Release me, insect, or I will destroy the Cosmos!
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