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.
Click here to download the full size of the above Circuit.
R1 1 4.7K 1/4W Resistor
R2 1 10K 1/4W Resistor
R3 1 12K 1/4W Resistor
R4, R6 2 22K 1/4W Resistor
R5 1 11.K 1% 1/4W Resistor
R7 1 16K 1/4W Resistor
R8 1 100K 1/4W Resistor
R9 1 24K 1/4W Resistor
R10 1 18K 1/4W Resistor
C1 1 0.1uF Ceramic Disc Capacitor
C2, C3 2 0.47uF Ceramic Disc Capacitor
C4, C5, C7 3 0.01uF Ceramic Disc Capacitor
C6 1 0.013uF Ceramic Disc Capacitor
C8, C9 2 4.7uF 25V Electrolytic Capacitor
C10 1 0.22uF Capacitor
C11 1 47uF 25V Electrolytic Capacitor
C12 1 100uF 25V Electrolytic Capacitor
D1 1 LED (Red, Green or Orange)
U1 1 TBA3810 (442-794)
S1 1 SPDT Switch
S2 1 SPST Switch
J1, J2, J3 3 RCA Jack Other suitable jack
MISC 1 PC Board, Wire, Case, Holder for D1, Socket for U1
This circuit was sent in by oRbEq (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).
This project fits more for custom made battery casing that can have more space to hide things inside. This switch with few alterations can be used for any other project as well but is designed based on e-bike needs! This project use a clever functionality of....
The circuit described here uses ultrasonic oscillations and operates based on the propagation velocity of these oscillations in the air. Thus, we can easily determine the distance of two points if the time within which the wave travels this distance is....
Sometimes the precious metals are hidden too deep and are not detected except with complicated devices. In many cases, however, small pieces of precious metal buried near the surface can be detected by relatively simple means. Everyone is very attractive to....
Many times for various reasons we forget or can not water the plants that we have in our homes. And many humidity sensors units just notify us with a beeping sound or with a flashing light, that the pot needs watering. But what if we are away from home? This....
The principle behind a metal detector is really very simple. Proof of this is the circuit that follows, in which it proves that the construction of a metal detector can be done in the minute, with few components that we find very easily everywhere. With the....
The sub-harmonic bass generator is a sound producing unit for guitars. The sound it produces looks very much like that of the bass guitar. The octave generator is sometimes quite unusual since it does not produce any of the usual ways of coloring the sound,....
In the past the sounding (sea bottom measurement) was done with the "bullet", that is, with a heavy lead object that the seamen plucked into the sea hung from a calibrated rope. As soon as the "bullet" reached the bottom, the depth appeared directly from the....
This Amplifier was designed to have the following specifications: Distortion less than 0.1% at full power of 100W even at 20KHz. Power has to be attributed to an extended bandwidth. The output transistors must be protected against short circuits. The power....
A series of LEDs serve to alert the gardener when plants need water. Using two conventional digital integrated LEDs and a series of LEDs, we make a very useful device for gardening. The device detects the amount of water in the pot and alerts the grower.....