Audio: modificador de voz

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  • Publicado : 14 de junio de 2010
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Parts:
P1,P3,P4________22K P2_____________220K R1,R15_________150K R2_____________220K R3______________56K R4_____________470K R5,R13,R14______22K R6______________10K R7______________33KR8,R10,R12______47K R9_______________1K R11_____________68K R16____________100K C1,C3,C5_______220nF C2______________47nF C4______________22nF C6_____________100µF C7_______________4µ7 D1,D2_________1N4148IC1____________LM324 Linear Potentiometers Linear Potentiometer 1/4W 1/4W 1/4W 1/4W 1/4W 1/4W 1/4W 1/4W 1/4W 1/4W 1/4W 63V 63V 63V 25V 25V Resistors Resistor Resistor Resistor Resistors Resistor ResistorResistors Resistor Resistor Resistor Polyester Capacitors Polyester Capacitor Polyester Capacitor Electrolytic Capacitor Electrolytic Capacitor

75V 150mA Diodes Low power Quad Op-Amp ICJ1,J2__________6.3mm. Mono Jack sockets SW1______________1 pole 3 ways rotary or slider switch SW2______________SPST Switch B1_______________9V PP3 Battery Clip for PP3 Battery

Comments:

Compared tocommon Fuzz-box devices, the Sound Modifier circuit allows a choice amongst a wide variety of output waveforms, thanks to its capability of mixing three different modified versions of the input signal.This stand alone unit, primarily intended for electric guitars, is based on a low power quad op-amp IC and draws a very low current from a common 9V transistor battery. Circuit description: IC1A is thelinear input amplifier. The input sensitivity of the circuit can be varied from -10dB to +10dB in three fixed steps by means of SW1, in order to cope with almost any pick-up type and model. IC1Bforms a rather straightforward fuzz circuit, based on the squaring property of two back-to-back diodes connected across output and inverting input of the op-amp. IC1C and related components convert thesquared output signal coming from IC1B into a triangle-shaped waveform. IC1D is wired as a virtual-earth mixer, summing the linear, squared and triangle-shaped signals coming from IC1A, IC1B and IC1C...
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