More than one frequencies

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Anonym
Anonym on 21 Sep 2020
Commented: Star Strider on 12 Nov 2020
I am trying to understand how multiple tone-frequencies work. I'd like to find the boundary where it still sounds like two tones and where it sounds like only one tone.
I'm trying to understand how I set a constant frequency to each of the sounds.
I'd like them to play atleast one minute, to hear how close are they to sound like one tone.

Accepted Answer

Star Strider
Star Strider on 21 Sep 2020
Multiply the two tones (modulate the 440 Hz with the 400 Hz) to get the ‘beat’ effect you want:
sound(s, Fs) % Produce Tone As Sound1
pause(1.5)
sound(s1, Fs) % Produce Tone As Sound2
pause(1.5)
sound(s.*s1, Fs) % Modulate To Produce Desired ‘Beat’ Effect
.
  13 Comments
Image Analyst
Image Analyst on 12 Nov 2020
I've been working on stain removal for literally the past 28 years.
Star Strider
Star Strider on 12 Nov 2020
Anonym — Image processing is not an area of my expertise. I have done some, however only for medical images with respect to my own work. I cannot help you with that.

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Image Analyst
Image Analyst on 22 Sep 2020
For what it's worth, I'm attaching a demo:

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