Antares AutoTune 4 user manual

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•Vibrato Scaling for modifying the depth of vibrato while maintaining
its shape and character
•Streamlined navigation controls
•Cursor Pitch Display (back again by popular demand)
•Selectable Edit Display color schemes
How To Use This Manual
If this is your first experience of Auto-Tune, you will find that Auto-Tune 4
has a very friendly user-interface and is extraordinarily easy to use. How-
ever, because Auto-Tune 4 does things that have never been done before,
a few aspects of the user-interface may...

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Installing Auto-Tune 4
Any unique instructions for installing Auto-Tune 4 for your specific plug-in
format are located in the Auto-Tune 4 Read Me file that accompanies the
plug-in. This file may also contain any last-minute Auto-Tune 4 information
that didn’t make it into this manual.
Auto-Tune 4 is designed to work with a wide variety of digital audio
applications. Please refer to your host application’s user manual for more
information on installing and using plug-ins.
Authorizing Auto-Tune 4...

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Chapter 2: Introducing Auto-Tune 4
Some background
In 1997, Antares Audio Technologies first introduced the ground-breaking
Auto-Tune Pitch Correcting Plug-In. Auto-Tune was a tool that actually
corrected the pitch of vocals and other solo instruments, in real time,
without distortion or artifacts, while preserving all of the expressive nuance
of the original performance. Recording Magazine called Auto-Tune a “holy
grail of recording.” And went on to say, “Bottom line, Auto-Tune is amaz-
ing......

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A little bit about pitch
Pitch is typically associated with our perception of the “highness” or
“lowness” of a particular sound. Our perception of pitch ranges from the
very general (the high pitch of hissing steam, the low pitch of the rumble
of an earthquake) to the very specific (the exact pitch of a solo singer or
violinist). There is, of course, a wide range of variation in the middle. A
symphony orchestra playing a scale in unison, for example, results in an
extremely complex waveform, yet you...

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Some pitch terminology
The pitch of a periodic waveform is defined as the number of times the
periodic element repeats in one second. This is measured in Hertz (abbrevi-
ated Hz.). For example, the pitch of A3 (the A above middle C on a piano) is
traditionally 440Hz (although that standard varies by a few Hz. in various
parts of the world).
Pitches are often described relative to one another as intervals, or ratios of
frequency. For example, two pitches are said to be one octave apart if their...

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How Auto-Tune 4 detects pitch
In order for Auto-Tune 4 to automatically correct pitch, it must first detect
the pitch of the input sound. Calculating the pitch of a periodic waveform
is a straighforward process. Simply measure the time between repetitions
of the waveform. Divide this time into one, and you have the frequency in
Hertz. Auto-Tune 4 does exactly this: It looks for a periodically repeating
waveform and calculates the time interval between repetitions.
The pitch detection algorithm in...

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Automatic Mode
Auto-Tune 4’s Automatic Mode works by continuously tracking the pitch of
an input sound and comparing it to a user-defined scale. The scale tone
closest to the input is continuously identified. If the input pitch exactly
matches the scale tone, no correction is applied. If the input pitch varies
from the desired scale tone, an output pitch is generated which is closer to
the scale tone than the input pitch. (The exact amount of correction is
controlled by the Retune Speed parameter,...

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RETUNE SPEED
Auto-Tune 4 also gives you control over how rapidly, in time, the pitch
adjustment is made toward the scale tone. This is set with the Retune
Speed control (see Chapter 3 for more details).
•Fast Speed settings are appropriate for short duration notes and for
mechanical instruments, like an oboe or clarinet, whose pitch typically
changes almost instantly. A fast enough setting will also minimize or
completely remove a vibrato, as well as produce the infamous “Cher
effect.”
•Slow Speed...

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In the original performance, we can see that although the final note should
be centered around D, the vocalist allowed the tail of the note to fall
nearly three semitones flat. The “after” plot is the result of passing this
phrase through Auto-Tune 4’s Automatic Mode programmed to a D Major
Scale (with C # and B set to ”Remove”) and a Retune Speed setting of 25.
That Retune Speed causes the pitch center to be moved to D, while still
retaining the vibrato and expressive gestures. (Setting C # and B to...

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The key feature of Graphical Mode is the Pitch Graph display. On this
display, the vertical axis represents pitch (with higher notes towards the
top) while the horizontal axis represents time.
The red curve represents the original pitch contour of the input track, while
the desired target pitch or pitch contour is indicated in yellow.
The horizontal grid lines represent scale pitches. The key annotation, scale
name, scale pitches and Scale Detune value are those defined in the
Automatic Mode. They do...