Precision Audio Generator For Musical Instrument Tune-Up Circuit

Posted on Mar 20, 2013

One section of the precision audio frequency generator uses an electret microphone element to pick up audio from the piano. That signal is then processed and sent to one channel of a dual-trace oscilloscope. The other section of the circuit is used to produce a variable-frequency signal that is fed to a digital frequency counter.

Precision Audio Generator For Musical Instrument Tune-Up Circuit
Click here to download the full size of the above Circuit.

After conditioning, the audio signal is presented to the second channel of the scope and output to a set of stereo headphones.

Leave Comment

characters left:

New Circuits



Popular Circuits

Voltage controlled ramp generator
Low-Level Power Fet Driver Method
how to build an inverter
Solar Panel Voltage Regulator Charger Circuit
15W Inverter Circuit 12VDC to 120VAC
radio frequency rf watt meter circuit
4 20ma current loop tester
RIAA Corrector
DIY Intercom Design Thread 4
Backup Lamp Circuit
PWM DC motor speed control circuit
Range precision voltmeter circuit
Half-wave synchronous detection circuit by a switching circuit