Pitch Control; About Pitch Changing - Alesis ADAT-XT20 Reference Manual

P
ITCH
The Pitch function controls the speed of the tape, and thus the pitch of the
audio recorded on tape. It displays speed as percentage and as cents. A cent is
1/100th of a semitone. For example, if a song is originally recorded in the key of
C, then played back with the pitch raised 100 cents, it will be in the key of C#.
The XT20's Pitch control has a range of -300 to +100 cents when using a sample
rate of 48 kHz, and a range of -200 to +200 when using 44.1 kHz. The Pitch
controls will not function while locking to an external clock (i.e. while the XT20
is slaved to another ADAT or is locking to an external digital clock).
The PITCH [ ] and [ ] buttons control the amount of pitch change. When
either button is pressed once, the PITCH icon lights in the display, and the
TIME counter immediately displays the current amount of Pitch change. The
Pitch amount is displayed both as a percentage (%) and as cents. After a few
seconds, the TIME counter reverts back to its normal mode.
ABS
To set the Pitch amount:
Edit mode.
The EDIT icon should be off.
After holding for more than .5 seconds, the Pitch amount will start either
increasing or decreasing, depending on which button was pressed.
press [ ].
press [ ].
Note: This is not possible while recording.
A
BOUT
ADAT XT20 Reference Manual
C
ONTROL
%
00 . 00
(Percentage) /
If Edit mode is currently on (EDIT icon lit), press [EDIT VALUE] to exit
Press and hold either PITCH [ ] or [ ].
To immediately set the Pitch amount to +100, hold [SET LOCATE] and
To immediately set the Pitch amount to -300, hold [SET LOCATE] and
To reset the Pitch amount to 0, simultaneously press both [ ] and [ ].
P C
ITCH HANGING
Here are a few things to consider when chaning the XT20's pitch:
One of the PITCH arrow icons will remain lit in the display to
•
remind you that the pitch has been changed from standard pitch.
• The counter will not elapse in real time when the pitch is set to
a value other than zero.
• When you change the pitch on ADAT-XT20, the sampling rate
will also change. The lowest sampling rate is 40.4 kHz, the highest is
50.8 kHz.
• If the internal clock is set to 48 kHz, but the pitch is lowered -
147 cents, the sampling rate is 44.1 kHz. However, for accurate TIME
00 . 00
(Cents)
Basic Operations: Chapter 4
C
73