Antares auto-tune-for tdm and vst Manual Do Utilizador
Introducing Auto-Tune
14
Auto-Tune UserÕs Manual
restores the performance. Auto-Tune is mostly used to solve these gross
intonation problems. However, as you shall see, Auto-Tune is also a preci-
sion instrument, allowing intonation to be controlled to extraordinary
degrees of accuracy. This allows the tonal aspects of music to be controlled
accurately and easily to achieve any desired consonance or dissonance in
harmonies.
intonation problems. However, as you shall see, Auto-Tune is also a preci-
sion instrument, allowing intonation to be controlled to extraordinary
degrees of accuracy. This allows the tonal aspects of music to be controlled
accurately and easily to achieve any desired consonance or dissonance in
harmonies.
Don't try to raise the pitch more than an octave. Auto-Tune has a built-in
limitation of not being able to raise a pitch more that one octave (1200
cents). This is not considered a problem since most pitch corrections will be
+/- 20 cents.
limitation of not being able to raise a pitch more that one octave (1200
cents). This is not considered a problem since most pitch corrections will be
+/- 20 cents.
How Auto-Tune Detects Pitch
In order for Auto-Tune to automatically correct pitch, it must also detect the
pitch of the input sound. ItÕs easy for you to calculate the pitch of a periodic
waveform: Simply measure the time between repetitions of the waveform.
Divide this time into one, and you have the frequency in Hertz.
pitch of the input sound. ItÕs easy for you to calculate the pitch of a periodic
waveform: Simply measure the time between repetitions of the waveform.
Divide this time into one, and you have the frequency in Hertz.
Auto-Tune does the same thing: It looks for a periodically repeating wave-
form and calculates the time interval between repetitions.
form and calculates the time interval between repetitions.
The pitch detection algorithm in Auto-Tune is virtually instantaneous. Like
your eye-ball, it can see the repetition in a periodic sound within a few
cycles. This usually occurs before the sound has sufÞcient amplitude to be
heard. Used in combination with a slight delay (about 1 to 10 milliseconds),
the output pitch can be detected and corrected without artifacts in a seam-
less and continuous fashion.
your eye-ball, it can see the repetition in a periodic sound within a few
cycles. This usually occurs before the sound has sufÞcient amplitude to be
heard. Used in combination with a slight delay (about 1 to 10 milliseconds),
the output pitch can be detected and corrected without artifacts in a seam-
less and continuous fashion.
Auto-Tune will not detect pitch when the input waveform is not periodic.
Hence, Auto-Tune will fail to tune up a violin section. (It is possible to tune
up an out of tune violin section, either tuning the sound as is, or by tuning
up the individual players within the sound. This is done on samples for
synthesizers using the Antares Audio Technologies InÞnity software. Using
InÞnity, you can actually made a community orchestra sound like the New
York Philharmonic. But InÞnity processes samples, whereas Auto-Tune is
used on performances.)
Hence, Auto-Tune will fail to tune up a violin section. (It is possible to tune
up an out of tune violin section, either tuning the sound as is, or by tuning
up the individual players within the sound. This is done on samples for
synthesizers using the Antares Audio Technologies InÞnity software. Using
InÞnity, you can actually made a community orchestra sound like the New
York Philharmonic. But InÞnity processes samples, whereas Auto-Tune is
used on performances.)
Back to Auto-Tune, if the input waveform is not periodic, Auto-Tune will
fail. At times, this can be a problem. Consider, for example, a breathy voice,
or a voice recorded with a wind sound. The added noise is non-periodic,
fail. At times, this can be a problem. Consider, for example, a breathy voice,
or a voice recorded with a wind sound. The added noise is non-periodic,