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Zombie Queen
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4249 posts since 1 Aug, 2005, from Warszawa, Poland

Postby Zombie Queen; Wed Oct 17, 2012 5:21 pm how I turned old cassette deck into an oscillator (free, sfz, kontakt)

I wanted to learn a bit about sfz and I did this silly experiment, to end up with funny and somewhat unique, old, dusty sampled oscillator... Thought I'd share it on KVR, just for fun, maybe someone will find it useful.

the story:
readme.txt wrote:Technics M33G feedback loop tone generator.
version 0.2

This is the effect of a silly experiment and an exercise to learn a bit about sfz format. I took an old cassette deck, Technics M33G and I created a feedback loop by connecting signal output with input. The tone could be controlled with volume deck's volume knob, for some reason I don't really understand. Then I connected deck's phone output to Audiofire sound card and captured the whole scale available from manipulating the magical volume knob, to create this little sample set. I used G-Tune VST to monitor sound frequency, trying to catch exact frequency for each note. The knob didn't work linear and was rather sensitive, so some notes were a little off, which I think adds some character to this set.

The files are 96kHz/24 bit, range it E4-B0, plus the lowest sound I could get. There are sampler mappings in sfz format to use with sfz or Alchemy or another sampler, and nki mappings for kontakt 2.2.4 or newer. Above E4 the deck would go rocket high frequency, so it was rather impossible to get acquire higher notes. Lowest tones are hardly tonal, but I recorded them anyway.

I created several versions of sfz mapping, below I explain their attributes:

(raw) - this is first stage output, the recording was somewhat trimmed, I created loop points and this is it, the feedback loop tone in all of it's dirtiness, some notes are little off and lower notes have big DC offset.

(filtered) - these are raw files, trimmed to three cycles of waveform (middle one being looped), hi-pass filter applied and normalized. These samples are much smaller and don't drift or pulse as much. They might be more practical for some uses.

(tuned) - in such version I'm trying to tune those more detuned samples using sampler settings.

(transposed) - this is mapping only difference. Since E4 is the highest note, all above notes are being derived from the same sample. To introduce some more variety in higher octave, this mapping has everything shifted one octave up by sampler. It results in quite different sound.

And that's all folks.

Oh, there's a bonus... A rec level test tone captured from another vintage Technics, ST-8080 AM/FM receiver. It feels like these should go together.

Final note: These are royalty free samples. Feel free to use them in your music, free or commercial, as you please - no need to contact or credit me. If you'd like to use them for sound design or sample library, I don't mind, but please contact me first, I'd like to know, if it has found some use and what is the outcome. Finally, please don't re-distribute the archive. I would like to be able to pull it off, if I feel like it.

Also: USE AT YOUR OWN RISK! These tones come from old dirty electronics and can be dangerous to mental health and your audio equipment. In other words, if you go nuts or blow your monitors, it's your own fault, not mine.


This is my first attempt to program sfz file, so it's possible I did something in a strange way. Consider this.

I played around with it on sfz and Alchemy, without processing it sound very much like an old videogame console.

However I failed importing those sfz-s to Kontakt. That is Kontakt imported them, but it took ages to finish and it didn't import loop point from files, which is strange as it reads them properly, if I open a wav. Is there a way to make sfz Kontakt friendly, or it's just this way?

Some pictures:

the setup:
Image

some waveform shots:
Image

sound examples:
http://soundcloud.com/fairlyconfused/m33g

download link
10MB (rather big for simple waveforms, but I wanted to capture some dirt and irregularities, trimmed version is 512k and is included).

edit: I added mappings for Kontakt, thanks to DavyAch for converting the files.
Last edited by Zombie Queen on Fri Oct 19, 2012 7:37 am, edited 2 times in total.
Shabdahbriah
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4816 posts since 19 Jun, 2008, from Seattle

Postby Shabdahbriah; Wed Oct 17, 2012 5:35 pm

Cool ... thank you :)

What is the 'little black box' on top of the deck?
Perception is the ultimate "reality" ~ but not, the ultimate Truth.
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Zombie Queen
KVRAF
 
4249 posts since 1 Aug, 2005, from Warszawa, Poland

Postby Zombie Queen; Wed Oct 17, 2012 5:44 pm

That's little black DI box....
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filter303
KVRian
 
610 posts since 14 Jun, 2006, from Espoo / Finland

Postby filter303; Wed Oct 17, 2012 6:20 pm

Awesome. Thank you very much for this freebie. The audio demo you made is very cool ;)
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SampleScience
KVRAF
 
3747 posts since 31 Oct, 2004, from Mtl, Canada

Postby SampleScience; Wed Oct 17, 2012 6:40 pm

I really dig the concept. :D The results are interesting, but on my girlfriend cpu's headphones they sound like any other oscillators. Is there suppose to be a difference?
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Zombie Queen
KVRAF
 
4249 posts since 1 Aug, 2005, from Warszawa, Poland

Postby Zombie Queen; Thu Oct 18, 2012 2:58 am

SampleScience wrote:...they sound like any other oscillators. Is there suppose to be a difference?


I didn't know. Possibly it just sounds like any other oscillator. I only wanted to try the idea.
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GaryG
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5524 posts since 13 Jan, 2003, from Kent, UK

Postby GaryG; Thu Oct 18, 2012 3:26 am

SampleScience wrote:they sound like any other oscillators. Is there suppose to be a difference?


well they're obviously more analogue. :hihi:

I like doing stuff like this myself though sometimes find the process is where the good stuff lies, not in the end result (the speed selector on my hammer drill isn't calibrated to any known scale unfortunately... :))

Thanks ZQ, all good source material in the end.
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Shabdahbriah
KVRAF
 
4816 posts since 19 Jun, 2008, from Seattle

Postby Shabdahbriah; Thu Oct 18, 2012 3:27 am

Zombie Queen wrote:
SampleScience wrote:...they sound like any other oscillators. Is there suppose to be a difference?


I didn't know. Possibly it just sounds like any other oscillator. I only wanted to try the idea.

And the "idea" worked.

Expanding on it will be fun, too. :wink:
Perception is the ultimate "reality" ~ but not, the ultimate Truth.
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Zombie Queen
KVRAF
 
4249 posts since 1 Aug, 2005, from Warszawa, Poland

Postby Zombie Queen; Thu Oct 18, 2012 4:16 am

GaryG wrote:well they're obviously more analogue. :hihi:

:lol: Oh, definitely, it's even next level of analogue - vintage analogue...

GaryG wrote:sometimes find the process is where the good stuff lies, not in the end result

That's very true.
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SampleScience
KVRAF
 
3747 posts since 31 Oct, 2004, from Mtl, Canada

Postby SampleScience; Thu Oct 18, 2012 6:12 am

Zombie Queen wrote:
GaryG wrote:well they're obviously more analogue. :hihi:

:lol: Oh, definitely, it's even next level of analogue - vintage analogue...

GaryG wrote:sometimes find the process is where the good stuff lies, not in the end result

That's very true.


I'm going to try it myself, I think this is a good idea. But I'll try the files first when I'll be home. My guess is that the longer samples will sound more analogue. :wink:
martygras
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539 posts since 3 Apr, 2008, from State of Confusion

Postby martygras; Thu Oct 18, 2012 3:15 pm

Cool. That recording makes me want to jump over mushrooms, kick turtle shells and hit my head on brick ceilings.

Zombiequeen, I wish I had that much free time. Although I tried this with a phonograph needle in the 80's, I could not control the feedback at all.

Far out man.
:wheee:
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shalako
KVRist
 
473 posts since 9 Jul, 2010, from Wellington, New Zealand

Postby shalako; Thu Oct 18, 2012 10:55 pm

I love stuff like this, years agon I made a white noise loop using a video cassette tape and player, it sounded awesome, amazing what a little imagination and experimentation can yield.
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horsma
KVRist
 
99 posts since 31 Oct, 2006, from Finland

Postby horsma; Thu Oct 18, 2012 11:03 pm

Cool. Have to test these waveforms in Absynth. :D
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tsonic
KVRist
 
172 posts since 16 Mar, 2011

Postby tsonic; Fri Oct 19, 2012 12:42 am

I'm more than just a fan of tape based oscillators/waveforms - it's a whole other world. Tape saturation reacts nicely when filtered. You can also play about with adjusting tape head angles (azimuth) - that way you can get an extra harsh starting point to the wave (filtered down a bit with a lowpass will get back to normalish) - this is good for really cutting aggressive sounds, and throw a few valves in and it'll jump out of your speakers like nothing else.
More info on my site.
Last edited by tsonic on Fri Oct 19, 2012 1:35 am, edited 2 times in total.
Lioshik
KVRist
 
35 posts since 24 Oct, 2011

Postby Lioshik; Fri Oct 19, 2012 12:53 am

Great stuff! thanks!!!
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