Antares auto-tune-for tdm and vst Manual Do Utilizador

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Auto-Tune UserÕs Manual
 
11
 
CHAPTER 2
 
Introducing Auto-Tune
 
Auto-Tune is a breakthrough in digital signal processing (DSP) in the music
industry. It puts you in control of pitch. Moreover, Auto-Tune is a precision
instrument for controlling pitch, allowing you to apply nuances of intona-
tion to any performance. These nuances were only previously available to
synthesized music if the engineer involved was willing to do a lot of work.
Access to this new level of control is achieved by any Auto-Tune user who
has a basic understanding of pitch and how Auto-Tune functions to correct
for pitch errors. This chapter presents basic terminology and introduces
Auto-TuneÕs operating paradigm, giving you information you need to use it
effectively.
 
What Is Pitch?
 
Pitch is a quality of sound relating to the frequencies of the energy involved.
Some sounds are very complex and donÕt involve energy of speciÞc fre-
quencies. Even then, there is pitch. Compare, for example the pitch of hiss-
ing steam with the rumble of an earthquake. Other sounds, although still
complex, have more speciÞc pitch. A symphony orchestra playing a scale in
unison is an example of this. The waveforms involved are very complex;
nonetheless, you are able to easily sense the pitch.
Vocalist and the majority of individual instruments have the most clearly
deÞned quality of pitch. The sound-generating mechanism of these sources
is a vibrating element (vocal chords, a string, an air column, etc.). The sound
that is generated consists of energy at a frequency (called the fundamental)
and energy at frequencies that are integer multiples of the fundamental fre-
quency (called harmonics). These sounds have a waveform (pressure as a