Parameter box for MIDI software
convenient software synthesizer operation
Published in issue 285, February 2000
Using a keyboard and mouse to operate the innumerable knobs and sliders of a PC mixing board can turn playing around with a sound synthesizer into an agonizing experience. With the MIDI parameter box it’s a different story!Almost every PC these days has a sound card. However, most PC users employ it only to reproduce operating system sounds, music from audio CDs and sound effects for games and presentations. They thus use only the standard features of the software for the sound card, even though there are outstanding programs available that allow even non-musicians to exploit the manifold features of modern sound cards. These are sound synthesizer programs.
Resistors:
R1,R8 = 1kΩ5
R2 = 1kΩ
R3 = 10Ω
R4,R7,R9-R16 = 10kΩ
R5,R6 = 220Ω
P1-P8 = 47kΩ linear potentiometer
P9 = 470Ω preset Hi
Capacitors:
C1-C8,C10,C11,C12,C14,C18 = 100nF
C9,C13,C17,C19 = 10µF 63V radial
C15,C16 = 33pF
Semiconductors:
D1,D2 = LED, high efficiency
D3 = 1N4001
T1 = BC547B
IC1 = MAX186BEPP
IC2 = PIC16F84-10/P (programmed, order code 996521-1)
IC3 = 7805
Miscellaneous:
K1 = 4-way SIL connector
K2 = 2 PCB solder pins
K3,K6 = 10-way SIL connector
K4,K9 = 5-way SIL connector
K5,K10 = 6-way SIL connector
K7 = 15-way Sub-D plug, chassis mount (see text)
K8 = 5-way DIN socket, chassis mount, 180° (see text)
K11 = mains adaptor socket
S1-S8 = pushbutton, 1 make contact
S9-S12 = on/off switch
X1 = 10MHz quartz crystal
Enclosure, e.g. Teko 363 (216x130x77mm)
PCB, order code 990087-1
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Click below to download a PDF copy of this article from Elektor magazine. Please note. In view of the complexity of international markets, Elektor cannot guarantee the availability of components for this project.
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