Desenhaudio
Light Theremin
Sequencer
4 Voice Passive Mixer
Pulse Wave
Atari Punk Jasmin
4voiceSynth
Creative Amp
Contact MicContactMic
PanAZ Bass
Tremolo
Synth (4 voice - Inverted Schimitt)
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Simple schematics for each voice:
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This chip contains 6 individual Schmitt triggers. A Schmitt trigger is a comparator circuit that incorporates positive feedback. What this means is that when a high signal (positive voltage defined as '1') is applied to the input pin, the output pin generates a low signal (ground voltage defined as '0). This simple circuit can be connected to a resistor/capacitor pair to rapidly turn on an off. When the frequency of this on/off conversion is in the audible range, we hear a square-wave tone.