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Mono To Stereo Synthesizer

2017-01-01 01:47  
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This circuit attempts to liven up mono sound sources by simulating a stereo signal. It does this by shifting certain frequencies between left and right to fool the ear. It can often produce a passable mock stereo sound to bring some depth to otherwise flat recordings. Of course, there is no way to produce real stereo sound from a purely mono source unless the synthesizer had a way to tell which direction the original sound came from, but an illusion is generally enough for all but the hard core audiophile.

 

Schematic

This is the schematic of the Stereo Synthesizer

 

Parts

Part
Total Qty.
Description
Substitutions
R114.7K 1/4W Resistor 
R2110K 1/4W Resistor 
R3112K 1/4W Resistor 
R4, R6222K 1/4W Resistor 
R5111.K 1% 1/4W Resistor 
R7116K 1/4W Resistor 
R81100K 1/4W Resistor 
R9124K 1/4W Resistor 
R10118K 1/4W Resistor 
C110.1uF Ceramic Disc Capacitor 
C2, C320.47uF Ceramic Disc Capacitor 
C4, C5, C730.01uF Ceramic Disc Capacitor 
C610.013uF Ceramic Disc Capacitor 
C8, C924.7uF 25V Electrolytic Capacitor 
C1010.22uF Capacitor 
C11147uF 25V Electrolytic Capacitor 
C121100uF 25V Electrolytic Capacitor 
D11LED (Red, Green or Orange) 
U11TBA3810 (442-794) 
S11SPDT Switch 
S21SPST Switch 
J1, J2, J33RCA JackOther suitable jack
MISC1PC Board, Wire, Case, Holder for D1, Socket for U1 
 

 

Notes

This circuit was sent in byoRbEq(email address unavailable).S2 controls power to the circuit. Switching S1 to ground bypasses the circuit and outputs mono sound to both output jacks. Setting S1 to R1 enables the synthesized stereo sound at the outputs.The circuit draws very little current and can thus be powered by most any well filtered 9V-12V source (including a standard 9V radio battery).
 

 


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