Circuits & Schematics Audio - 7

Those of you who imagine that a robot voice generator box would require a whole heap of ICs are mistaken; the ISD2500 ChipCorder family of ICs from Winbond contains almost all the necessary hardware in a single IC to record and playback audio ...

This tool assists you in tuning your string instrument to a given tone. It utilizes the stroboscopic effect to give feedback about the adjustment of your instrument. The two LEDs on the board blink with the frequency that the chosen tone has. When ...

Gabor Toth Description To listen old vinyl LP's in a correct sounding on a sassy with dynamic cartridge you need a circuit, named RIAA corrector. This circuit you can find in old amps, but it isn't embedded in home cinema equipments or amplifiers ...

Generates very low-distortion sine waves up to 1V RMS. No thermistors required - No settling time Circuit diagram: Parts: P1 10K Log. Potentiometer (Dual-ganged) P2 2K2 Linear Potentiometer R1, R2, R4, R5 3K3 1/4W Resistors R3, R6 820R 1/4W ...

For audio testing, a pink noise source is an invaluable tool. It is essentially a flat frequency response noise source, and will quickly show any anomalies in speaker systems, room acoustics and crossover networks. White noise (the sound you hear ...

Izhar Fareed Using this low cost Project one can reproduce AUDIO from TV without disturbing anyone. It does not use any wire between TV and headphone. In place of pair of wires it uses invisible Infrared light to transmit audio signals from TV to ...

This schematic is designed to operate with minimum of external components. This amplifier offers high quality performance at very low distortion. Project is based on National LM1875 IC. The IC is thermal and short circuit protected. Specifications ...

Andy Collinson Description: A microphone amplifier that may be used with either Electret Condenser Microphone (ECM) inserts or dynamic inserts, made with discrete components. Notes: Both transistors should be low noise types. In the original ...

Alexander Weber I searched the web for a cheap method to let the ATmega respond to sound. My knowledge in analog circuits is very limited, but what I do remember, is that you can not attach a electret mircophone to a controller pin. The signal of ...

Turns-off your amplifier when idle for 15 minutes Fed by amplifier tape-output Circuit diagram: Parts: R1,R8 1K 1/4W Resistors R2,R3 4K7 1/4W Resistors R4 22K 1/4W Resistor R5 4M7 1/4W Resistor R6,R9 10K 1/4W Resistors R7 1M5 1/4W Resistor R10 100K ...