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New chips from DSP Synthesizers
MUFF WIGGLER Forum Index -> Music Tech DIY Goto page 1, 2  Next [all]
Author New chips from DSP Synthesizers
janost
First up are 2 support chips for my synth chips:

The LFO1 is a simple LFO with CV's for rate and waveform.
It is syncable with a reset input.



Next is a single ADSR envelope generator with CV's for Attack, Decay, Sustain and release.
It has a gate input for the envelope.



And the BBD1 chip:
It is a digital version of the MN3009 256-stage BBD.
Being a digital version it can besides audio also be clocked down to 0Hz for really long modulation delays.
It has an external clock option.

glennfin
Wow! eek! you are producing some really incredible devices!!. Excellent!!
janost
And the last one Before I take a summer vacation is the KS1.

A Karplus-Strong VCO.



Praxis
These all look very interesting. I look forward to seeing the details on your website.
janost
Oh, I almost forgot the K8.

An upgraded K5/KL5 with 8 harmonics in a 14-pin DIP.
And it has a range and sync input.

If anyone is interested w00t

janost
Ok, lets try it like jensu suggested,

The new K8 chip is the uppgraded K5/KL5 chip featuring 8 harmonic additive synthesis in a 14-pin DIP.

1V/oct CV for fundamental pitch and 7 CVs for harmonic levels.
1 input for range select, VCO/LFO range.
1 Sync input that resets the oscillator phase.

I'm giving away 5 for free including international shipping.

The only requirement is that I get a youtube video of the review/test.

Rockin' Banana!
basicbasic
A naive question: Is the BBD one a drop-in replacement for the 8 PIN MN3xxx chips? I assume not.
janost
basicbasic wrote:
A naive question: Is the BBD one a drop-in replacement for the 8 PIN MN3xxx chips? I assume not.


no sorry.

only functionally.
diablojoy
hmm started working on a board for your K5
this K8 also sounds interesting sync is a good addition guess that will be next
then perhaps your CV - ADSR thumbs up
janost
First up for ordering:

Order the K8 Chip $20



tokyomatik
I was already interested to the K5 chip, but now this makes the all situation even more yummy.
u still give away 5 for free?
i would be up for that youtube video if this can give me the chance to try this baby.
diablojoy
Hmm with the K8 what is sync input signal required ? time /level, eg would 1mSec low or high be ok
also LFO/VCO range which is high / low ? momentary or latched switch ?
cheers
janost
diablojoy wrote:
Hmm with the K8 what is sync input signal required ? time /level, eg would 1mSec 5V be ok
also LFO/VCO range which is high / low ? momentary or latched switch ?
cheers


Its an edge input that resets the sinewave phase on a rising edge.

A momentary switch wont do much unless its operating in the LFO range.
diablojoy
Quote:
Its an edge input that resets the sinewave phase on a rising edge.



cool so pretty much any positive going pulse will do


Quote:
A momentary switch wont do much unless its operating in the LFO range.

OK so range select is (high) 5V for VCO mode , (low) - ground for LFO mode
correct?
janost
diablojoy wrote:
Quote:
Its an edge input that resets the sinewave phase on a rising edge.



cool so pretty much any positive going pulse will do


Quote:
A momentary switch wont do much unless its operating in the LFO range.

OK so range select is (high) 5V for VCO mode , (low) - ground for LFO mode
correct?


Yes on both smile
a100user
Would it be possible to provide a compatibility list of your chips that work with the DSP Host module?

I currently have the CZ1 chip and would like to try others in the module before looking at building separate units.
janost
a100user wrote:
Would it be possible to provide a compatibility list of your chips that work with the DSP Host module?

I currently have the CZ1 chip and would like to try others in the module before looking at building separate units.


Chips that work in the dsp-Host module:

DWS - Digital Waveshaper
CZ1 - Phasedistortion osc
FM1 - 2OP FM osc
WSQ - Wavetable osc
u02 - Micropops rhythm chip
LFO1 - Simple LFO
BBD1 - Digital 256-stage BBD
KS1 - Karplus-Strong OSC
RS5 - 5 osc Super-SAW osc
a100user
janost wrote:
a100user wrote:
Would it be possible to provide a compatibility list of your chips that work with the DSP Host module?

I currently have the CZ1 chip and would like to try others in the module before looking at building separate units.


Chips that work in the dsp-Host module:

DWS - Digital Waveshaper
CZ1 - Phasedistortion osc
FM1 - 2OP FM osc
WSQ - Wavetable osc
u02 - Micropops rhythm chip
LFO1 - Simple LFO
BBD1 - Digital 256-stage BBD
KS1 - Karplus-Strong OSC
RS5 - 5 osc Super-SAW osc


That's great Jan, thanks.
janost
The RS-5 Super-SAW OSC

Like detuned saws?
This is a 5 OSC Super-SAW in a 8-pin DIP.

Features:
Pitch 1volt/Oct CV input, range C2-C7.
Detune CV input.
VCA CV input for the output level, range 0 – 48dB.

A perfect match for the dsp-Host module or the VCDM/ENV6 synth chips.

Order the RS-5 chip $15



janost
a100user wrote:
janost wrote:
a100user wrote:
Would it be possible to provide a compatibility list of your chips that work with the DSP Host module?

I currently have the CZ1 chip and would like to try others in the module before looking at building separate units.


Chips that work in the dsp-Host module:

DWS - Digital Waveshaper
CZ1 - Phasedistortion osc
FM1 - 2OP FM osc
WSQ - Wavetable osc
u02 - Micropops rhythm chip
LFO1 - Simple LFO
BBD1 - Digital 256-stage BBD
KS1 - Karplus-Strong OSC
RS5 - 5 osc Super-SAW osc


That's great Jan, thanks.


You can also run it with a Digispark adapter.
Makes it possible to program the chip through USB without a programmer.
diablojoy
hmm would like to see a quadrature sine LFO with control over phase for B-C-D outputs
maybe with a VCA or cv over waveshape perhaps
hint hint thumbs up
tokyomatik
still I didn't received the K8....maybe got lost??
mara
I am interested in KS1 and BBd chips,
Are they available?
Thx
daynehacks
janost wrote:
a100user wrote:
janost wrote:
a100user wrote:
Would it be possible to provide a compatibility list of your chips that work with the DSP Host module?

I currently have the CZ1 chip and would like to try others in the module before looking at building separate units.


Chips that work in the dsp-Host module:

DWS - Digital Waveshaper
CZ1 - Phasedistortion osc
FM1 - 2OP FM osc
WSQ - Wavetable osc
u02 - Micropops rhythm chip
LFO1 - Simple LFO
BBD1 - Digital 256-stage BBD
KS1 - Karplus-Strong OSC
RS5 - 5 osc Super-SAW osc


That's great Jan, thanks.


You can also run it with a Digispark adapter.
Makes it possible to program the chip through USB without a programmer.


Which firmwares are available for user programming? I thought there was only on for the attiny85 on the blog?
JimY
Nice to see an attempt to replace the BBD chip. I know you can still get real BBD, but we ought to be trying to boot them into history. It's a shame small MCU's have such little RAM and low res converters built in, otherwise it would be old news.

I did some guitar fx a while back using AT tiny and a BBD chip in a Tiny85 with a partner LFO/Clock chip in another 85. I gave mine a switch to a smaller buffer so it could do flanging.
Info & sound links here...
http://www.diystompboxes.com/smfforum/index.php?topic=110748.0

A Tiny 84 flanger was a much better thing as I got the audio up to 10bit.
Info etc here...
http://www.diystompboxes.com/smfforum/index.php?topic=110730.0

In a Mega 328, I think there's a 10bit 3 tap reverb/delay to be had, depends on packing 10bits somehow to make most use of the RAM. I've been coding in assembly to ensure all RAM can be used without a stack.
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