Unbelievable Sound on a Budget: Emulate General MIDI and Roland MT-32!

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Bits und Bolts

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Published on March 13, 2025 1:01:23 PM ● Video Link: https://www.youtube.com/watch?v=s2xgwXyD_c8

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I finally have a Wavetable expansion! If you have an ISA soundcard, you might want to have a look at this amazing project! For little money, you can build your own Wavetable expansion board which will upgrade your soundcard to level you would have never expected! You will get full General MIDI support as well as Roland MT-32/CM-32L.

▬▬▬▬ PCBWay ▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬
Sponsored by PCBWay: 🔸 https://pcbway.com/g/lF253I
PCBWay provides full feature custom PCB prototyping services, 3D printing, and much more. Check them out using my referral link above and get a 5 USD welcome bonus when you sign up as a new customer!

My contributions to the Community Project Space at PCBWay:
🔸 https://www.pcbway.com/project/member/?bmbno=0140E301-54A5-47

▬▬▬▬ * Project Resources and Attributions * ▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬
‪@scrap_computing‬ Resources:
WavetablePi Project/Gerber: https://github.com/scrapcomputing/WavetablePi
Original Wavetable-Pi video:    • WavetablePi: Wavetable Midi module po...  
PWM audio improvements:    • WavetablePi: Better PWM audio  

mt32-pi Project (Dale Whinham):
Project: https://github.com/dwhinham/mt32-pi
Support Dale: https://ko-fi.com/d0pefish
DAC configuration: https://github.com/dwhinham/mt32-pi/wiki/GY-PCM5102-DAC-module
SD card preparation: https://github.com/dwhinham/mt32-pi/wiki/SD-card-preparation

Alternative explanation how to configure DAC pads:
https://raspberrypi.stackexchange.com/questions/76188/how-to-make-pcm5102-dac-work-on-raspberry-pi-zerow

Software control for RaspberryPi Zero 2W:
https://github.com/gmcn42/mt32-pi-control

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▬▬▬▬ Timestamps ▬▬▬▬▬▬▬▬▬▬▬▬▬▬
00:00 Wavetable and Soundcards
02:38 The WavetablePi
04:43 PCBWay
05:34 WavetablePi soldering
17:54 WavetablePi assembly
23:21 mt32-pi configuration: Soundfonts
29:45 Configure Soundcard
30:23 X-Wing: Soundblaster
31:41 X-Wing: General MIDI
35:13 mt32-pi configuration: MT-32
35:55 X-Wing: MT-32
40:08 The Secret Of Monkey Island