Eventide Harmonizer H90 - Page 202

introduced the word “glitching” to the pro-audio vocabulary. The H949 was the world’s first de-glitched
Harmonizer. Unlike the Diatonic pitch shifters, pitch shifting is in the feedback loop allowing for
arpeggiated repeats.
 Note
For the purists in our audience, you may remember that the H910 and H949 were mono in, stereo
out devices. In other words, they featured a single pitch shifter with independently adjusted delays.
To best emulate these vintage boxes, we recommend that you set either Pitch A or Pitch B to unison
(1.00) and use that output for feedback without pitch change.
Mix: Wet/dry mixer, 100% is all wet signal.
Pitch A/Pitch B Mix: Controls the ratio of the level of Pitch A to Pitch B.
Pitch Shift Up A: Controls the amount of pitch shift for voice A expressed as a ratio.
Pitch Shift Down B: Controls the amount of pitch shift for voice B expressed as a ratio.
Delay A: Controls the amount of time delay of the A pitch-shifted output. With Tempo Sync OFF,
delay is displayed in ms. With Tempo Sync ON, delay can be sync’d to the tempo and is displayed as
a rhythmic sub-division of the tempo beat value.
Delay B: Controls the amount of time delay of the B pitch-shifted output. With Tempo Sync OFF,
delay is displayed in ms. With Tempo Sync ON, delay can be sync’d to the tempo and is displayed as
a rhythmic sub-division of the tempo beat value.
Splice Type: Selects the type of Harmonizer emulated:
H910: The H910 was just a tiny bit unstable. And it showed. The H910’s iconic, flickering
display was the first ‘digital readout’ to appear in many studios. And that flickering readout belied
a secret – the H910 was inherently ‘jittery’. The H910’s master clock wasn’t crystal-based but,
instead, it was a tuned LC (inductor/capacitor) oscillator. The result is that the system was not
locked to a specific frequency and the entire system’s clocking would drift slightly, slowly and
unpredictably. In fact, all of the oscillators in the H910 are of the ‘free-running’ sort and this
randomness adds to the sound (and the fun). This Algorithm’s pitch change splicing method is the
same as the hardware’s – the glitch is back!
H949-1: Algorithm 1 may cause glitches with increasing frequency as the pitch ratio deviates
from 1:1, and is generally more appropriate for smaller pitch ratios.
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11. ALGORITHM GUIDE