unofficial mirror
 help / color / Atom feed
From: Darryl Lewis <>
To: "" <>
Subject: Re: Sine wave in an envelope
Date: Wed, 3 Jun 2020 15:05:20 +0000
Message-ID: <> (raw)
In-Reply-To: <>

Thanks Dr Tensi,
Those examples are fantasic and give me a great base to work from.
Kind regards

On 4/6/20, 12:34 am, "Dr. Thomas Tensi" <> wrote:

    Hello Darryl,

    you wrote:
     > [modulate a sine wave with another in SoX?]

    What you could do as an easy approach is modulate a sine wave with a
    tremolo. Assume a target bit depth of 24bit, a sample rate of 44.1kHz, a
    carrier of 1500Hz with a length of 20s and a modulation of 0.5Hz with a
    depth of 100%

       sox -n -b 24 -r 44100 test.wav synth 20 sine 1500 tremolo 0.5 100

    Tremolo can only do a sine modulation with a fixed phase of 90°.

    Even more powerful is the cascading of synth effects. Same logic, the
    carrier is amplitude-modulated by a sine with 0.5Hz with the same 20s

       sox -n -b 24 -r 44100 test.wav synth 20 sine 1500 synth 20 sine amod 0.5

    If you don't want a full modulation (from 0 to 100%), you can add a
    dc-offset to the second waveform.

    Hope this helps!

           Best regards,


    Sox-users mailing list

Sox-users mailing list

  reply index

Thread overview: 9+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-06-03 11:38 Darryl Lewis
2020-06-03 14:33 ` Dr. Thomas Tensi
2020-06-03 15:05   ` Darryl Lewis [this message]
2020-06-03 15:13     ` Dr. Thomas Tensi
2020-06-07 21:05   ` Jeff Learman
2020-06-08 11:11     ` Dr. Thomas Tensi
2020-06-08 12:20       ` Jeff Learman
2020-06-08 15:13         ` Dr. Thomas Tensi
2020-06-08 19:24         ` Jeff Learman

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-list from there: mbox

  Avoid top-posting and favor interleaved quoting:

  List information:

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \ \ \

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link unofficial mirror

Archives are clonable: git clone --mirror

Example config snippet for mirrors

Newsgroups are available over NNTP:

 note: .onion URLs require Tor:

AGPL code for this site: git clone