[sdiy] Pink?

[Jay Schwichtenberg]

I wondering if this is getting into the difference between east and west coast synthesis?

 

East coast with standard pure oscillator waveforms and filtering verses west coast oscillators that offer non-standard waveforms with different harmonics.

 

Jay S.

 

From: Synth-diy [mailto:synth-diy-bounces at synth-diy.org] On Behalf Of Rutger Vlek
Sent: Saturday, August 18, 2018 2:12 AM
To: Mattias Rickardsson
Cc: SDIY List
Subject: Re: [sdiy] Pink?

 

Hi Mattias, 

 

I share your opinion, when it comes to solo sounds from analog oscillators. I've often noticed how these sounds are EQ'd and otherwise processed (e.g. Lots of reverb) at mixing stage such that the resulting master actually follows a rather pink (3 dB/oct) frequency spectrum. 

 

There's a really accurate static pink filter implementation on the Esp (Elliot) website, but I prefer more control so I designed a spectral tilting module for Eurorack. It allows you to tilt the spectrum (even CV controlled!) of a sound up to a positive and negative 3dB/oct slope. I've achieved great results with it on my VCO's, being able to make them gradually more pink. Combining a pink-ish VCO voicing with overdrive also sounds wonderful, and avoids harshness. Putting tilting under CV control is also cool, as it gives a very gentle and natural modulation of timbre (e.g. modulation with lfo or brightening with higher velocity). I've even achieved a very passable analog leslie simulator with it in a stereo configuration, partially because my implementation of tilting also involves small phase shifts that are modulated along with timbre. 

 

Regards, 

 

Rutger

 

 

Op 17 aug. 2018 16:13 schreef "Mattias Rickardsson" <mr at analogue.org>:

Hi all,

 

I often experience VCOs "too bright", having too much high end in the sawtooth & pulse waves.

I often experience VCF resonance peaks "too bright", being too strong at higher cutoffs.

I often experience white noise "too bright", having too much high end...

 

...while pink noise feels more balanced. Equal power per octave, not per Hz.

Also, good sounding loudspeakers/studios tend to have a bit pink-ish spectrum roll-off from the sound source to the listener position, suggesting that some sort of pinkification of clean sounds could be desirable.

 

So, why aren't VCOs and VCFs more spectrally pink?

Have there been any attempts historically to alter their characteristics a bit in synths? :-)

 

/mr

 

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