Antares TASCAM TA-1VP Manuale Utente

Pagina di 44
 
TASCAM TA-1VP
  
9
intonation correction to be performed on all vocals and 
almost all instruments.
Of course, the TA-1VP will not detect pitch when the input 
waveform is not periodic. As demonstrated above, the 
TA-1VP will fail to tune up even a unison violin section. 
But this can also occasionally be a problem with solo 
voice and solo instruments as well. Consider, for example, 
an exceptionally breathy voice, or a voice recorded in an 
unavoidably noisy environment. The added signal is non-
periodic, and the TA-1VP will have difficulty determining 
the pitch of the composite (voice + noise) sound. Luckily, 
there is a control (the Sensitivity control, discussed in 
Chapter 5) that will let the TA-1VP be a bit more casual 
about what it considers “periodic.” Experimenting with 
this setting will often allow the TA-1VP to track even noisy 
signals.
How Auto-Tune corrects pitch
Auto-Tune 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 pitch, 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 Speed 
parameter, described below and in Chapter 5.)
Scales
The heart of Auto-Tune pitch correction is the Scale. The 
TA-1VP comes with 25 preprogrammed scales. For each 
Scale you can define which notes will sound and which 
won’t. And for each note that will sound, you can decide 
whether the TA-1VP will apply pitch correction to input 
pitches near that note or leave those pitches uncorrected.
You can also edit any of the preprogrammed scales and 
save your custom scale as part of a Preset.
Speed
You also have control over how rapidly, in time, the pitch 
adjustment is made toward the scale tone. This is set with 
the Speed control (see Chapter 5 for more details).
Fast Speed
• 
 settings are more 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. At the fastest setting, you 
will produce the now-infamous “Cher effect.”
Slow Speed
• 
 settings, on the other hand, are 
appropriate for longer notes where you want 
expressive pitch gestures (like vibrato) to come through 
at the output and for vocal and instrumental styles that 
are typified by gradual slides (portamento) between 
pitches. An appropriately selected slow setting can 
leave a vibrato unmodified while the average pitch is 
accurately adjusted to be in tune.
An example
As an example, consider this before-and-after graphic 
representation of the pitch of a vocal phrase that contains 
both vibrato and expressive gestures.
10.0
10.5
11.0
D3
B2
C
#
3
ORIGINAL
PERFORMANCE
CORRECTED 
BY TA-1VP
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 the TA-1VP set to a D Major Scale (with C# and 
B set to ”Blank”) and a Speed setting of 10. That Speed 
causes the pitch center to be moved to D, while still 
retaining the vibrato and expressive gestures. (Setting 
C# and B to ”Blank” is necessary to keep the TA-1VP from 
trying to correct the seriously flat tail of the last note to 
those pitches. See Chapter 5 for more details.)
Antares Microphone Modeling
If you’ve spent any time flipping through the pages of pro 
audio magazines, you have almost certainly noticed the 
intense focus on microphones. From the proliferation of 
exotic new mics to the almost cult-like following of certain 
historical classics, never has the choice been greater. But 
amassing a substantial collection of high-end mics is 
financially prohibitive for all but the most well-off studios.
Now, using Antare's patented Spectral Shaping Tool™ 
technology, we’ve created digital models of a variety 
of microphones. Simply tell the TA-1VP what type of 
microphone you are actually using and what type of 
microphone you’d like it to sound like. It’s as simple as 
that.
With the TA-1VP, you can record each track through a 
model of the type of mic that will best produce that ideal 
sound you’re looking for. Or use it in live performance 
to get the sound of mics you’d never consider using on 
stage. You can even use it during mixdown to effectively 
change the mic on an already recorded track. And for that 
final touch of perfection, you can even add some tasty 
tube saturation.
2 – Introducing the TASCAM TA-1VP Vocal Producer