Experimental Noise Oscillator - First Run

[zaphod betamax]

https://youtu.be/Nbxs4SlwJyE

This uses a CV controlled CD4093BE for audible oscillator (clock)
and a Ring Oscillator made with the CD4093BE for data.

Also uses a CD4089 Binary Rate Multiplier that is modulated
by a CD4517BE SR.

The output of the CD4517BE is converted to analogue via a voltage follower (the only non-CMOS device) and ported to my home made AD envelope (off camera -based on the Thomas Henry Easy AD envelope) controlling a LPG consisting of a 12db/octave LPG with photo FETS.

Too soon for schematics are this was born on the breadboard and I have
to transcribe to paper at a later date.

Please note the scope: This is set to 1ms/div Horiz and 1V/div Vertical.

A very weird circuit which flies the 5V flag!

[Top Top]

Sounds cool. Would love to see a schematic.

[zaphod betamax]

Will have to rebuild this on breadboard as I am short of breadboard space.
Before I disassembled it had 8 choices of noise.

[zaphod betamax]

I never recorded the schematic before dissemble so I was never able to
get it to the video sound ever again when I rebuilt.

However I am working on a new version...stat tuned.
I made it simpler and removed the CD4089, now it is just a
CD4093 and a CD4517.

[zaphod betamax]

TYPO on the schematic. The CD4093BE is where the drawing says it is a CD4069BE.

My dsylexia!

It would not work well, or at all using the CD4069...but who knows!

https://youtu.be/ipZyAvl3NSw

FILED UNDER OBSOLETE ELECTRONICS:

The second revision of my Experimental Noise Oscillator series.

This one is a CD4093BE as a voltage controlled oscillator (VCO)and a high frequency oscillator generator (HFO).

A CD4522BE processes the "clock" which is the "VCO" output which then feeds the clock input of a CD4517BE.

4 outputs of the CD4517BE control the division rate of the CD4522BE.

The DATA (the noise element) is fed from a high frequency ring oscillator
from CD4093BE.

The 8 outputs of the CD4517BE are converted to analogue via an R2R DA
and an MCP6002.

The 8 modes are controlled by the WRITE ENABLE on the CD4517BE
by tapping 8 different points.

This will be replaced by an analog SP8T switch later on when I get said switch.

All powered on 5V for your benefaction.

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[Ruebezahl]

Cool, i like it! Noisy sounds that are rather uncommon in Lunettas! and the rythmic changes make it more interesting too.

[PHOBoS]

funky

Are those rhythmic changes between all that fuzzyness caused by the VCO being sequenced ?

[zaphod betamax]

Lots of stuff.

The frequency of the "VCO" requires an external source,
so it is connected to a three stage ASR. (using one stage)


At the time I left unused gates floating and this added to the wrecking.
Like a dumbass I never recorded the breadboard schematic
(because I thought I knew if off by heart ((I did not))

So this circuit for the first video is lost to time.

I do know I used a CD4093BE as the "VCO", a CD4522BE and a CD4517BE.
But how I wired it up to get the first video sound I was never able to replicate!

However, I am working on a new noise make called the LMNO or
Lunetta Mutated Noise Oscillator, so all is not lost!

[zaphod betamax]

The newest version of the LMNO...

I will not forget the schematic this time!


https://youtu.be/eFxaBwoOToQ

File under Obsolete Electronics.....

Getting closer to getting off the breadboard and becoming a module.

-Added an encoder and LEDS to switch through Mode 1 to 4.

CMOS used: CD4093BE, CD4522BE and CD4517BE

No programming code required to operate.

Bass Drum by Korg Monotribe.