Audio - other

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High Quality Intercom
High Quality Intercom
June 5, 2013

A very high quality intercom, which may also be used for room monitoring. [more]

Guitar Reverb Effect
Guitar Reverb Effect
December 4, 2010

It is suitable for use as a front-end to a guitar amplifier. This circuit features clipping indicators on the preamp and reverb recovery stages, allowing for the optimal gain settings. [more]

Guitar Fuzz Effect
Guitar Fuzz Effect
December 4, 2010

Fuzz is one of the classic guitar effects, and this simple circuit generates it quite well. The circuit is so compact that it can be built into guitars or amps that do not have built in fuzz to add that capability to the instrument. The... [more]

Simple Color Organ
Simple Color Organ
December 4, 2010

A simple, satisfactory Color Organ can be built with a handful of cheap components. This design features: no mains supply transformer, built-in microphone and three widely adjustable frequency bands obtained by means of very simple, passive filters for Bass, Middle and Treble. [more]

Mini Metronome
Mini Metronome
December 4, 2010

Simple mini metronome circuit diagram [more]

Electronic Siren
Electronic Siren
December 4, 2010

An electronic siren made from discrete components. A push button switch is used to create the sound, which rises in pitch when the switch is pressed, and falls in pitch when the switch is released. [more]

Sound Effects Generator 2
Sound Effects Generator 2
December 4, 2010

This circuit uses the Holtek HT2884 IC to produce 8 different sound effects. [more]

Sound Effects Generator
Sound Effects Generator
December 4, 2010

This circuit uses a UM3561 IC to produce four different sound effects. [more]

Metronome Circuit
Metronome Circuit
December 4, 2010

A metronome circuit based on a simple astable. The output sound is distorted to emphasize the pulses. [more]

Electronic Canary
Electronic Canary
December 4, 2010

An electronic version of a chirping canary. May be used as an alarm, a sound effects generator or perhaps a replacement doorbell. [more]

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