The airmonica is an easy-to-learn musical instrument that you can use to perform harmonic musical ditties by accompanying a tri-tone arpeggiator. You can expand the device in any way that will make it your own custom instrument.
The project shows you how to build an automatic volume control system for TV-sets, home audio systems, etc. The system measures current volume level from Audio AUX output and controls audio volume by Infrared commands. The idea is simple – in many situations TV-set user has to adjust the volume: when he or she watch [...]
This project shows you how to build a robot voice generator with IC HT8950, a powerful voice modulating IC. The circuit has Robot function, Vibrato function and 7-step level shifting pitch. The construction is extremely simple and the unit is very small.
The purpose of the project is to build uncomplicated voice recognition system based on M32C/84 microcontroller. The main part consists of telephone, some amplifiers, and development board.
The project used to operational amplifiers in the analog part, the first one, provide amplification to the signal of 220mV p-p generated by signal transducer (a microphone electret) and [...]
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