Antares AutoTune 8 user manual

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Installing Auto-Tune 8
Any unique instructions for installing Auto-Tune 8 for your specific host or plug-in format are located in the Auto-Tune 8 Read Me file that accompanies the plug-in. This file may also contain any last-minute Auto-Tune 8 information that didn’t make it into this manual. 
Auto-Tune 8 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 8...

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2: Introducing Auto-Tune 8 
For pitch correction, Auto-Tune 8 employs state-of-the-art digital signal processing algorithms (many, interestingly enough, drawn from the geophysical industry) to continuously detect the pitch of a periodic input signal (typically a solo voice or instrument) and instantly and seamlessly change it to a desired pitch (defined by any of a number of user-programmable scales, MIDI input, or through the use of graphical editing tools). 
To take maximum advantage of the power of...

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vibrating element (vocal chords, a string, an air 
column, etc.). The sound that is thus generated 
can be graphically represented as a waveform 
(a graph of the sound’s pressure over time) 
that is periodic. This means that each cycle of 
waveform repeats itself fairly exactly, as in 
the periodic waveform shown in the diagram 
below:
Because of its periodic nature, this sound’s 
pitch can be easily identified and processed by 
Auto-Tune 8.
Other sounds are more complex. This 
waveform:
is of a violin...

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repetitions of the waveform. Divide this time 
into one, and you have the frequency in Hertz. 
Auto-Tune 8 does exactly this: It looks for a 
periodically repeating waveform and calculates 
the time interval between repetitions.
The pitch detection algorithm in Auto-Tune 
8 is virtually instantaneous. It can recognize 
the repetition in a periodic sound within a few 
cycles. This usually occurs before the sound 
has su-cient amplitude to be heard. Used 
in combination with a very slight processing...

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Retune Speed 
Auto-Tune 8 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 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 iconic Auto-Tune Vocal e(ect.
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 8’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 general shape of the expressive gestures....

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Graphical Mode 
The Graphical Mode is similar to the Automatic Mode in that it also continuously tracks the pitch of the incoming sound and modifies the output pitch to be closer to a desired pitch. But in the Graphical Mode, the desired pitch is not a predefined scale tone, but rather is a graphical representation of your desired pitch (called a “correction object”).  
As in Automatic Mode, the rate of change towards the desired pitch is controlled by the Retune Speed control, but in Graphical Mode you...

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The horizontal grid lines (or Lanes, when Show 
Lanes in selected) represent scale pitches. The 
key annotation, scale name, and scale detune 
value are those defined by the common area 
controls at the top of the interface. They do 
not a(ect the computations of the Graphical 
Mode in any way. They are merely a reference 
to guide you in setting the target pitches. 
Graphical Mode also includes the Envelope 
Graph, which displays the amplitude 
(loudness) envelope of the sound whose pitch 
is shown in...

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Although you can also accomplish overall transposition in Graphical Mode by selecting all the correction objects in your track and manually moving them up or down, in most cases, using the Transpose function will provide superior results.
Formant Correction
A sound’s ”formants” are the combined acoustic resonances that result from the physical structure of whatever is producing the sound. 
In the case of a human voice, air from your lungs is forced through your vocal chords, causing them to vibrate....

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The Move Region tool is designed for moving notes, words, or phrases while preserving the timing of the moved element. As with the Move Point  tool, you first select a range of audio and then select the region within that selection that you want to move and move it forward or back in time, again compressing and expanding the audio around it.
Both tools are context sensitive. That is, they change function (from selection to moving, for example) depending on what lies beneath them on the screen. As a...