New Buchla 700FM Format Modular

video uploads by Gm Xe

This one is in via Soviet Space Child.

"Hi, I have been a buchla fan for a long time, and I have always been curious about buchla 700. I immediately bought the id 700 when it was available, which is really a great app. However, I like hardware instruments with intuitive operation. Thanks to my good friend kweiwen, who wrote the initial code for me, I opened this mysterious instrument. After half a year of learning and development, I finally completed this module. Although there are still some improvements to be made, I am very happy, the sound is really good, I try to make myself comfortable with it, so the design is based on personal habits.

The main program is written in max/msp, using daisyseed to implement gen ~ code burning. buchla700 is a very complex instrument, although it cannot be perfectly reproduced, I think half of the core content is there."

Playlist:

1. 700VOiCE Buchal format Walk through new Updated version introduction

Previous devlopement:

2. I made an fm module similar to buchla 700
3. Play note#1 new buchla format modular demo
4. 700_FM_Voice_Note4
5. 700voice upgrade test demo 1
6. 700 buchla format modular note#5



Additional details via Mod Wiggler

"I apologize for the delay; the new images and information are still being prepared. The images feature three modules: on the left, the 3U modules include the 700 expansion and 700 voice, while the 1U module on the right is an effects module that will be introduced separately later. Thank you for your patience!

In the realm of synthesizers, the nearly forgotten classic Buchla 700 is celebrated for its unique sound design. We are thrilled to introduce our tribute module, showcasing a distinctive 700 FM Voice module powered by re-optimized algorithms. With its intuitive interface, you can dive in effortlessly, whether you’re crafting intricate soundscapes or vibrant melodies. This module is designed to inspire creativity and unlock endless possibilities.

This module is a monophonic sound source featuring four variable waveform oscillators and six specialized algorithmic index amplifiers, creating complex modulation patterns with twelve algorithms. Each oscillator and index group can be individually controlled via CV inputs, with dedicated CV attenuation for each. It provides a dual-path mix output for Group A/B, enabling CV morphing, along with a separate output for channel B. Both A and B channels offer independent wave shapes and drift modulation. Each oscillator supports wave morphing between sine, saw, and square waveforms, with the option to expand using an additional 12 control knobs. Two OLED displays showcase configuration algorithm graphics and a dual-channel oscilloscope. The DA output is 48 kHz/24-bit, with finely tuned oscillator algorithms. Outputs are carefully calibrated through analog amplification circuits, fully compatible with Buchla-format CV modulation, and support 1.2 V/oct and MIDI input.


1. Four independent variable waveform oscillators, each supporting 1.2 V/oct modulation. Each oscillator features three selectable modes,
indicated by LED colors: red for mode 1, green for mode 2, and blue for mode 3.

2. A global frequency control.

3. Six independent index controls, supporting 0-10 V CV modulation.

4. A/B dual mixed output with CV modulation capability, plus a dedicated output for channel B.

5. The top left OLED allows mode switching for the oscilloscope via an encoder and provides access to expanded feature options.

6. The middle OLED displays logic diagrams for twelve algorithms, with buttons for downward selection and a 'Res' button to return to the previous level.

7. Expanded oscillator waveform selection, including sine-saw, sine-square, and PWM square shapes.

8. Enhanced waveform simulation with jitter modulation.

9. Independent wave shape modulation for A and B outputs.

10. Support for expansion modules.

11. MIDI input compatibility.

12. Global support for 1.2 V/oct.

13. Power requirements: +5V 190 mA, +15 V 60 mA, and -15V 70 mA."