Digi-512 is an audio digitizer for the CoCo 3. It assumes you have 512K but lets you change the size of the playback/recording buffer so it can still be used on a 128K machine.
I was interested in audio digitizing on the CoCo, so I made up the program to
experiment with a few different techniques or approaches at the process to see what
method worked best to give the longest audio playback while still keeping good sound
The CoCo has interesting hardware for Audio digitizing. Unlike other computers of the time, it actually has a built-in 6 bit DAC for audio playback. The CoCo's joystick port is also connected to the DAC and a comparitor so we can use the joystick port to digitize audio.
Digi-512 lets you choose between 3 different digitizing techniqes, and 4 different playback techniques:
|digi-512.zip||Digi-512 program disk. 35 track disk.|
|1bitsim1.zip||Sample music 1 - '1-bit delta - 62799 Hz' 40 track disk, side 1.|
|1bitsim2.zip||Sample music 1 - '1-bit delta - 62799 Hz' 40 track disk, side 2.|
|compsim1.zip||Sample music 2 - 'compressed - 12093 Hz' 40 track disk, side 1.|
|compsim2.zip||Sample music 2 - 'compressed - 12093 Hz' 40 track disk, side 2.|
|mmmusic1.zip||An experimental audio player & sample data part 1. 35 track disk 1, side 1.|
|mmmusic2.zip||sample data part 2. 35 track disk 1, side 2.|
|mmmusic3.zip||sample data part 3. 35 track disk 2, side 1.|