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From: Darryl Lewis <darryl.lewis@unsw.edu.au>
To: "sox-users@lists.sourceforge.net" <sox-users@lists.sourceforge.net>
Subject: Vary the volume and duty cycle over time
Date: Wed, 24 Feb 2021 09:01:04 +0000	[thread overview]
Message-ID: <0B45FF1D-0FB9-4292-AEC9-A43C34B5CEAE@contoso.com> (raw)


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I’m trying to simulate a square wave signal. So far I have this, which should be a 400Hz square wave.

play -V -r48000 -n synth square 400 0 0



Is there

  1.  A way to make the amplitude rise and fall over time?
  2.  Vary the duty cycle over time, from say 300Hz to 600Hz and back down to 300Hz then repeat?



Any advice welcomed.

Thanks in advance.

Darryl


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             reply	other threads:[~2021-02-24  9:07 UTC|newest]

Thread overview: 3+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-02-24  9:01 Darryl Lewis [this message]
2021-02-24 21:02 ` Vary the volume and duty cycle over time Dr. Thomas Tensi
2021-02-24 21:26   ` Darryl Lewis

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