How to gradually increase or decrease an FMSound frequency over
time?
Rob Rothwell
r.j.rothwell at gmail.com
Fri Apr 21 23:49:54 UTC 2006
On 4/21/06, Hans-Martin Mosner <hmm at heeg.de> wrote:
>You should really experiment with PitchEnvelope a little more (and
>VolumeEnvelope for fade-in/fade-out).
>I'm certain that you can achieve your goals with it.
>When adding more slope points to the envelope, always remember to set
>loopStart and loopEnd to the size of the points array, as you don't want
>to have a looping part.
>Cheers,
>Hans-Martin
Thanks for the great example. With very low frequencies, you can edit the
WAV file and really see how well it works. I knew Squeak could do this!
Now I'm going to try to understand what it is actually doing. As you
suggested, I am definitely going to try to understand the Envelope classes.
>From your explanation of loopStart and loopEnd, I guess you just add more
slope points to the envelope, and then you can create a "series" of constant
and/or changing frequencies.
Thanks again for all your help. Maybe someday I'll understand something
enough to help somebody else out!
Rob
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