Anonymous
10/29/2025, 11:25:36 PM
No.2954086
>>2954078
>This is all audio frequency
>but there are some square wave "clock" signals that come into the board to control my oscillator circuits
>They are 4 kHz square waves
>but it was pointed out to me that of course a square wave contains harmonics at much higher frequencies
>Then again, I'm only interested in the audible output
>so surely I could send them through a passive RC filter with a cutoff frequency in the 100s of kHz and be free from electromagnetic infetterence in the MHz range?
>This is all audio frequency
>but there are some square wave "clock" signals that come into the board to control my oscillator circuits
>They are 4 kHz square waves
>but it was pointed out to me that of course a square wave contains harmonics at much higher frequencies
>Then again, I'm only interested in the audible output
>so surely I could send them through a passive RC filter with a cutoff frequency in the 100s of kHz and be free from electromagnetic infetterence in the MHz range?