Eventide’s DDL1745M had an optional pitch change module and a handful of studios began to discover digital effects. Prior to its introduction, studios had adopted digital delay as a utilitarian tool to replace the bother of using an expensive tape machine (and salaried tape op) for double tracking and plate reverb pre-delay.
#Eventide h910 harmonizer ebay pro#
The H910 was arguably the first pro audio digital effects product. Just three years later, Buys Ballot, a Dutchman, demonstrated the Doppler Effect on sound waves by having six tubas play the same sustained note while perched on the front of a speeding locomotive. In 1842, Christian Doppler suggested that “the observed frequency of a wave depends on the relative speed of the source and the observer.” Doppler was thinking about star light, not sound, but a wave is a wave is a wave. (Kids whirling objects around on a string were not the scientific observers for which one would have hoped.) To notice even a slight pitch change of 2% a sound source with 100% constant pitch would have to be approaching the listener at 15 mph.
Why had no one elucidated this effect in our long history? It’s simple few things moved fast enough! Sound travels at ~750 mph. While Pitch Change is naturally occurring, throughout history, humans would rarely have perceived the effect because the sound source must be traveling at a high enough rate of speed relative to the listener to cause a discernible change in pitch.
The combination of glitch, randomness, and analog signal path, especially when the feedback control was turned up, added an ‘organic’ feel to the sound and that feeling comes through in the plug-in.There’s a lot of history to cover about the conception and development of the Harmonizer so let’s first consider the underlying principle: the interesting phenomenon known as Pitch Change. This was evident in the way that the display would flicker between pitch ratio readings. The system clocks at the heart of the design drifted and wobbled introducing a degree of randomness in the effect not found in later crystal-based, precise digital devices. The design predates the introduction of the CD and digital audio sample rate standards (e.g. In addition to the glitch, all of the quirkiness of the original H910 has been emulated. Not surprisingly, artists found creative ways to use the glitch, and, in fact, years later when the H949 was introduced with advanced de-glitching circuitry, some users were disappointed that the glitch was gone. The original H910’s unique pitch change method introduced random ‘glitches’ into the audio and the word ‘glitch’ into the audio engineer’s vocabulary. Stereo (cross-unit) Feedback can cause the incoming signal to shift up and then down continuously.Easily fattens and thickens instruments when assigning opposite pitch ratios.Recreates two H910 units running in parallel to create doubling effects and other unique sounds.Mix Lock allows for scrolling through presets or settings while keeping the dry/wet mix constant.Individually control delay outputs and dry/wet mix.Self-oscillation - create colorful, unique sound effects and drones.Delay rhythms and melodies to create everything from slap-back echoes to feedback chaos.Modify pitch by musical intervals (diatonic) to harmonize vocals or solo instruments.Optional “glitching” of original H910 hardware to create unpredictable sounds as it alters pitch.Anti-Feedback modulates the pitch around unity for a subtle or wild effect.Perform perfect pitch changes, controlled manually via MIDI or with Anti-Feedback.True analog modeling of highly nonlinear electronics for faithful reproduction of the original H910’s juicyness and grit.OUT2 Delay Group adds inspiring attributes to your sound.The built-in envelope follower makes exploring these possibilities easy. Envelope Follower - Engineers and producers discovered that sending a control voltage to the hardware H910 could be used to slightly (or massively) vary the pitch, creating entirely new sounds.With the H910 plug-in you can easily use MIDI to control pitch and harmonization in real-time. Keyboard and MIDI mapping - The original H910 featured a keyboard remote control which was used live by several artists including Elton John.
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