video upload by blarrer20
"JCS BN-1" 4-Bit Linear PCM Synthesizer - Part 2 (Finished)
video upload by blarrer20
"This video demonstrates the final version of a 4-bit Linear PCM synthesizer that I have designed and built over about two months. It makes use of mostly Soviet clones of 7400 and 74LS series TTL chips, with no microcontrollers involved. It has a 256 x 4 SRAM chip that allows the user to program whatever waveforms may be desired, with looping capability, and starting at whatever point desired. Most importantly, it is able to be controlled by an external source, for example a keyboard instrument. It also has a frequency doubler circuit. This video is part 2 of 2, showing the finished product.
If you want to skip right to the sounds, go to 27:08"
via this listing
Pics of the inside below.
Details from the listing:
