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I am using a 555 IC to produce a sound in a small 8 ohm speaker. It works just fine, but the square wave sounds rather harsh. I am wondering if there is a simple way to round out the corners to make it sound better. All the circuits I have found online are rather complex. It seems to me that a simple RC circuit should do the trick, but I have not been able to figure out how to position it.
Any help would be greatly appreciated.