[sdiy] DSP MIDI Synth (was Re: 566 Functional Replacement)

[Roman Sowa]

That demo was line recorded.
Unless you mean my terrible lack of musical skills to play something 
with it which might be called "music" by more than 2 people.

IIRC it abuses serial port as PWM at not impressive frequncy, and audio 
should be filtered down to some 3kHz or so. This example used simple RC 
filter as suggested in the user manual.

And about Jan Ostman being an enigma - I got the chip really quick and 
with no problems, but OTOH I think it was the one and only thing in his 
store back then.

Roman

W dniu 2018-03-19 o 12:53, paula at synth.net pisze:
> 5 voice paraphonic, not monophonic..
> 
> it's just nuts, I'd love to hear some better quality demos (i.e. 
> non-mobile phone microphone)
> 
> On 2018-03-19 11:30, Tom Wiltshire wrote:
>> That’s an interesting read.
>>
>> There’s several things that strike me straight away:
>>
>> 1) Naive oscillator waveforms with no band limiting
>> 2) Linear envelopes with 30ms steps, so no fine adjustment at the fast 
>> end
>> 3) Very basic filter code
>>
>> I still think getting a entire DSP mono synth into an 8-pin DIP is
>> quite impressive, especially in C, but a 32-bit ARM chip can produce
>> better sound than this is going to.
>>
>> Tom
>>
>> ==================
>>        Electric Druid
>> Synth & Stompbox DIY
>> ==================
>>
>>> On 19 Mar 2018, at 10:16, Vladimir Pantelic <vladoman at gmail.com> wrote:
>>>
>>> On 18.03.2018 19:31, Roman wrote:
>>>> And it sounds like crap and makes unpredictible things.
>>>
>>> that's perfect for a Eurorack module then! ;)
>>>
>>>
>>> btw, source code is here for the curiously inclined:
>>>
>>> https://www.hackster.io/janost/the-dsp-gplug-midi-synth-80b2aa
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