[chuck-users] Which is the difference?

[Dana Batali]

Minor correction:  running a SinOsc as input to another SinOsc is a method
for achieving frequency modulation.  There are several examples in the
chuck distro.  To do FM, iirc, there is a special "sync" parameter that
when set to 2 triggers this behavior.

Here is the source for basic/fm2.ck

// basic FM synthesis using SinOsc (2 => .sync; also see fm3.ck)

// modulator to carrier
SinOsc m => SinOsc c => dac;

// carrier frequency
440 => c.freq;
// modulator frequency
110 => m.freq;
// index of modulation
300 => m.gain;

// phase modulation is FM synthesis (sync is 2)
2 => c.sync;

// time-loop
while( true ) 1::second => now;


On Sat, Jun 26, 2021 at 3:19 PM Curtis Ullerich <curtullerich at gmail.com>
wrote:

> When the chuck operator (=>) is used with UGens like `foo => bar`, it
> pipes the audio signal from foo into bar. Some UGens accept input (like
> dac, although dac is maybe more properly an audio sink than a UGen), some
> produce output (like SinOsc), and some do both (like Gain). I believe
> oscillators like SinOsc do not accept input, so `SinOsc foo => SinOsc bar`
> wouldn't make sense. This program produces no audio, for example, at least
> AFAICT:
> SinOsc s => SinOsc t => dac;
> 400 => s.freq;
> 600 => t.freq;
> 1::day => now;
>
> Your first example creates two sine oscillators and sends their output to
> the dac to play. You'll need to set a frequency for the oscillators and
> advance time to hear anything, of course:
> SinOsc s => dac;
> SinOsc t => dac;
> 400 => s.freq;
> 600 => t.freq;
> 1::day => now;
>
> On Sat, Jun 26, 2021 at 9:47 AM Gabriele Battaglia <
> gabriele.battaglia at gmail.com> wrote:
>
>> Hi.
>> I’m a newbie, so I apologize for this basic question.
>>
>> Which are the differences in between these two constructions?
>>
>> 1.
>> SinOsc s1 => dac;
>> SinOsc s2 => dac;
>>
>> Dn, 2…
>>
>> SinOsc s1 => SinOsc s2 => dac;
>>
>> Thanks.
>> Gabe
>> —
>> Namasté!
>> Sent from Starship iMac27, Captain Battaglia
>> G A B R I E L E . B A T T A G L I A @ G M A I L . C O M
>> --
>>
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