Asteroid Mini Synthesizer Reference Manual.
Here is a block diagram of module:
What does this module do?
This module is a percussive synthesizer similar to the voice of a korg ER-1 drum machine. I used that
groove box as a model on how to internally connect the different sub modules found inside the Asteroid
Mini Synth. I was not shooting for a clone, it just helped me achieve an understanding of how to make a
great percussive mini synth. This module is 100% analog signal path, where as the korg ER-1 is a dsp
based simulation.
-The internal vco was taken from my Transistor Pyramid VCO. That uses a discrete transistor circuit to
create a nice triangle wave. The sine shaper is also transistor based and sounds fantastic.
-A booster circuit was added to achieve the ‘techno drum sound’ with ease.
-Part of the ER-1’s magic was the delay effect. On the Asteroid Mini Synth I used a PT2399 modern IC
chip to simulate bucket brigade effect (delay).
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