Antares autotune4 Manual Do Utilizador
6
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 are still able to easily sense the pitch.
“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 are still able to easily sense the pitch.
The vocalists and the solo instruments that Auto-Tune 4 is designed to
process have a very clearly defined 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 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:
process have a very clearly defined 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 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 4.
and processed by Auto-Tune 4.
Other sounds are more complex. This waveform:
is of a violin section playing a single note in unison. Our ears still sense a
specific pitch, but the waveform does not repeat itself. This waveform is a
summation of a number of individually periodic violins. The summation is
non-periodic because the individual violins are slightly out of tune with
respect to one another. Because of this lack of periodicity, Auto-Tune 4
would not be able to process this sound.
specific pitch, but the waveform does not repeat itself. This waveform is a
summation of a number of individually periodic violins. The summation is
non-periodic because the individual violins are slightly out of tune with
respect to one another. Because of this lack of periodicity, Auto-Tune 4
would not be able to process this sound.