Perencanaan dan Pembuatan Harpa Elektronik dengan Sensor Photoelectric Berbasiskan Mikrokontroller A

Just to share about my thesis :

Abstract

Electronic harp has identical shape with a convetional harp but it is smaller than a convetional harp. The part of electronic harp with laser pointer is made from two octave without cromatic sound. As a string we use a laser pointer..

The method to produce sustain is using a DAC that convert from digital to analog. The combine of a few note so produce polyphonic sound using software with FDM (Frequency Demodulation Multiplexing). Microcontroller AT89S52 use to control the system.

Pursuant to result of experiment, awakened frequency 1,02 % level of error.

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