[sdiy] ARM/FPGA synth - now with 100% more audio samples

[Ian Smith]

Eric-
That sounds awesome. Ok, I'm probably a little biased because I like bells and gongs (having played in the church bel choir for a couple years...), but that really sounds great and all sorts of analog.
Kudos!
-Ian Smith

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> Date: Tue, 14 Apr 2009 18:49:19 -0700
> From: ebrombaugh1 at cox.net
> To: synth-diy at dropmix.xs4all.nl
> Subject: [sdiy] ARM/FPGA synth - now with 100% more audio samples
>
> I've had a few months to code up a little mono synth on the ARM/FPGA
> system that I built. You can find a few updates on the website here:
>
> http://members.cox.net/ebrombaugh1/synth/armfpga/index.html
>
> Basically it's a MIDI controlled 2-op FM synthesizer with an ADSR and a
> regenerative feedback delay. The ARM processor is responsible for
> configuring the FPGA and parsing the MIDI data into parameter settings
> for the synth design.
>
> I've made a few audio samples to demonstrate some of the sounds. Find
> them here:
>
> http://www.sdiy.org/kbadc/armfpga/
>
> Descriptions:
>
> fm.mp3 - this is playing around with the 2-op FM waveshaping. You can
> hear changes in the mod/carrier ratio as well as the mod index. Note the
> rather strong clicking as the mod/carrier ratio is changed, while
> sweeping the index is much smoother.
>
> gong.mp3 - this is a high and low gong sound to illustrate the
> exponential release.
>
> delay.mp3 - this is playing around with the regenerative delay /
> feedback feature.
>
> Let me know what you think!
>
> Eric
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