How it works:
This circuit is based around the 555 timer circuit, used as an astable (free running) oscillator. The frequency (pitch) of the tone is set by the resistors and capacitors in the left side of the circuit. The first one is a potentiometer (variable resistor), this is our pitch control, which is basically all the external components you need. The capacitor to the far left is to reduce as much noise or undesired operation of the potentiometer, getting a smooth pitch change when adjusting.
4 comments:
I don't know anything about the circuitry but couldn't this be used as a component in an analog synthesizer since they have up to four oscillators each having different types of pulses?
It could work for a simple sound synth, but there are probably better ways to do sound generation and synthesizing if what you want is a musical keyboard type of thing.
Well, if any of you have any ideas on how to make a simple synth, I'd be interested. I would like to build a 12 note synth that is controlled by a simple keyboard and each note is tunable (I guess variable resistor). Me needs some help finding something!
Is there a way to add a transistor into this circuit to make the tone pulse every second or so?
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