Akai mpc3000 Manuel D’Utilisation

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Chapter 8: Creating and Editing Sounds
3. 
STEREO
: Sampling is done in stereo, using both the left
and right sampling inputs (or both parts of the signal
arriving at the digital input).
• The 
Monitor
 field:
This choice field has two options: 
ON
 and 
OFF
. If 
ON
, the signal from
the sampling input is heard in the stereo mix outputs. If 
OFF
, it is
not. If you are sampling with a microphone in the same room as the
speakers, select 
OFF
 to avoid audio feedback. Otherwise, select 
ON
to hear the incoming signal in the stereo mix.
• The 
Length
 field:
This field is used to specify the total recording time to be allocated
to the new sample, in seconds (and 0.1 seconds). Any number can be
entered here up to the maximum available sampling time. In a non-
expanded MPC3000, the maximum sampling time is 21.9 seconds
mono or 10.9 seconds stereo. In a fully expanded MPC3000 (total 16
megabytes) the maximum sampling time is 188.3 seconds mono or
94.1 seconds stereo.
COMMENT: If you frequently find that you need more
memory even when all sounds are deleted, you may want to
add more memory to the MPC3000. See the section “Expand-
ing the Sound Memory” in the Appendix for information
about how to do this.
COMMENT: Although the maximum sampling time is
limited only by available sound memory, the maximum
sound file size that can fit on a floppy disk is 16.4 seconds
mono or 8.2 seconds stereo. If a sound is larger than this, it
won’t fit on a single floppy and the MPC3000 cannot split
single sound files over two or more floppies. If you need to
create longer sounds and save them to disk, you must use an
external hard disk connected to the SCSI port.
• The 
Thres
 (Threshold) field:
This sets the threshold above which recording will begin once 
<Rec
ready>
 has been pressed. The range is 0-100% of full scale. A good
setting to start with is 1%. Setting 
Thres
 to 0 will cause recording
to begin as soon as 
<Rec ready>
 is pressed.
• The 
Pre-Rec
 (Pre-Record) field:
When sampling, a small amount of time before the level threshold is
exceeded is also recorded, insuring that even the low level start of
the sound is retained. This field is used to set that amount of pre-
record time, in milliseconds. For example, to record 10 milliseconds
before the audio threshold is exceeded, enter 10 here. The default
value here is 1 millisecond, which is adequate for most sharp attack
sounds like drums.
COMMENT: When played back, the sound starts playing
from the point at which the threshold was exceeded