Hi Guys / Gals
I am trying to make a Biofeedback type of thing with a Arduino Uno and a pulse monitor. Hopefully my girlfriend can use it to lower her heartbeat & calm herself so she can sleep.
The problem is that the Arduino tone function puts out a square wave that sounds abrasive on a small speaker. I would like a soothing hummmm at frequencies from A4, 440 Hz down to B0, 31 Hz.
I don't know much analog or music.
How do I turn a 50% square wave into a sine wave? Are attack and decay asking too much?
I am trying to make a Biofeedback type of thing with a Arduino Uno and a pulse monitor. Hopefully my girlfriend can use it to lower her heartbeat & calm herself so she can sleep.
The problem is that the Arduino tone function puts out a square wave that sounds abrasive on a small speaker. I would like a soothing hummmm at frequencies from A4, 440 Hz down to B0, 31 Hz.
I don't know much analog or music.
How do I turn a 50% square wave into a sine wave? Are attack and decay asking too much?