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Tag - pitch shifter

ValhallaShimmer: a bit of history

Pitch Shifting, reverb, theory, Valhalla DSP, ValhallaShimmer

ValhallaShimmer has its roots in the earliest digital reverberation algorithms, as described by Mannfred Schroeder in 1961. Schroeder, in his earliest AES paper on the subject, described a “colorless” reverberator, based upon cascaded diffusor (allpass) delays. At the…

ValhallaShimmer released for OSX AU, VST, RTAS. $50. Demo versions online.

Pitch Shifting, reverb, Valhalla DSP, ValhallaShimmer

After far too much work, ValhallaShimmer is finally available for sale and demoing: ValhallaShimmer OSX users, grab yerself a demo copy and see how you like it. Windows folks, I estimate another week of work and beta testing…

Another clip from my upcoming plugin

Pitch Shifting, reverb, Upcoming work, Valhalla DSP

The following clip shows some of the different modes of my upcoming plugin, ValhallaShimmer: A brief summary of what is going on: The clip begins with harp recorded in a fairly echo free environment At 0:24, the mix…

Feedback, anti-feedback, and complexity in time-varying systems

frequency shifter, Pitch Shifting, theory, ValhallaFreqEcho

“For my birthday I got a humidifier and a dehumidifier. I put them in the same room and let them fight it out.” – Stephen Wright When I was researching the Eventide H910 Harmonizer, I found it curious…

Shimmer: Modulation, auto-correlation, and decorrelation

DSP Philosophy, Pitch Shifting, reverb, theory

In my previous post, I discussed the Eno/Lanois shimmer sound, and how it is based around a pitch shifter and a digital reverb placed in a global feedback loop. It is worth exploring what is going on in…

Eno/Lanois Shimmer Sound: How it is made

Pitch Shifting, theory, Tips and Tricks

The basic foundation of the Brian Eno / Daniel Lanois shimmer sound is fairly simple: Create a feedback loop, incorporating a pitch shifter set to +1 octave, and a reverb with a fairly long decay time. By controlling…

Eno/Lanois Shimmer effect: Early examples

Good Music, Pitch Shifting, theory

The collaboration of U2 with Brian Eno and David Lanois was the first introduction to a wide listening audience of the reverb with swelling octave overtones that has come to be referred to as “shimmer.” However, the effect…

Pitch Shifting: The H949, and “de-glitching”

Pitch Shifting, theory

In 1977, Eventide released the H949 Harmonizer: The H949 built upon the harmonizing features of the H910, and added more memory (for longer delays), randomized delay, reversed delays, flanging, and a micropitch mode for small pitch shift intervals.…

Early pitch shifting: The Eventide H910 Harmonizer

Good Music, Pitch Shifting, theory

In 1975, Eventide came out with their first Harmonizer, the H910: Designed by Anthony Agnello (later of Princeton Digital), this was a digital variant of the rotary tape head pitch shifters that I discussed earlier. Like the Lexicon…

The first digital pitch shifter: Lexicon Varispeech

Pitch Shifting, theory

When I was planning my “editorial calendar” for the next few weeks, I had planned on discussing the Eventide H910 Harmonizer as the “first digital pitch shifter.” I even described the H910 as such in an earlier blog…