Uploaded Sun Dec 28 2025 11:51 am

Plans for a analog I/O extension board
for the PC using the 8bit AD7569 IC.

Uploaded Tue Dec 30 2025 06:45 pm

Low frequncy osc. schematic.

Uploaded Tue Dec 30 2025 06:45 pm

Asm-1 noise source schematic.

Uploaded Sun Dec 28 2025 11:51 am

Plans for a single channel audio mixer
using transistors

Uploaded Tue Dec 30 2025 06:45 pm

Boss Octave OC-2 schematic.

Uploaded Tue Dec 30 2025 06:45 pm

Boss slow gear SG-1 attack delay schematic.

Uploaded Sun Dec 28 2025 11:51 am

Plans for a Hi Fi headphone Amp.

Uploaded Sun Dec 28 2025 11:51 am

Plans on a few MIDI connector boxes
for the Sound Blaster card.
 How to build a MIDI interface box and
a threw-put box. 

Uploaded Tue Dec 30 2025 06:45 pm

White and Pink noise generator schematic.

Uploaded Tue Dec 30 2025 06:45 pm

VCO clocked pseudo random noise generator schematic.

Uploaded Tue Dec 30 2025 06:45 pm

Scalable white noise generator schematic.

Uploaded Tue Dec 30 2025 06:45 pm

Percussion circuit.

Uploaded Sun Dec 28 2025 11:51 am

Loude speaker Simulation program.
Tests loudspeaker desigh.

Uploaded Tue Dec 30 2025 06:45 pm

Build the shotgun sound snooper.

Uploaded Tue Dec 30 2025 06:45 pm

Build a shotgum mic. project.

Uploaded Sun Dec 28 2025 11:51 am

Sound level meter (project) in AcroReader format