14-4
Sampling and Sample Editing
Sampling Analog Signals
Another consideration in selecting sample rate is the K2600Õs transposition range during sample
playback. The K2600 transposes samples by changing the sample playback rate; the higher the
playback rate, the higher the pitch of the sample. The K2600 can achieve a maximum sample
playback rate of 96 KHz. Normally, a sample made at 48 KHz can be transposed up a maximum
of one octave, since the playback rate doubles for every octave of upward transposition. If you
set the SmpSkp (sample skipping) parameter (on the KEYMAP page in the Program Editor) to
Auto
or
On
, you can transpose up two octaves at 48 KHz. A sample made at 29.4 KHz can be
transposed up approximately 21 semitones (an octave and a sixth)Ñor 42 semitones with
SmpSkp set to
Auto
or
On
. There is no limit on downward transposition, regardless of the
sample rate. See page 6-24 for more information about sample skipping.
Each portion of a sample (each individual sample element made by the K2600 during the
sampling process) takes up two bytes of sample memory. A one-second stereo sample at 48 KHz
consists of 96,000 individual samples (48,000 x 2), taking up 192,000 bytes (about 188K) of
sample memory. The same sample taken at 32 KHz takes up about 125K. A one-second mono
sample taken at 32 KHz takes up about 63K.
If you plan to do a lot of sampling, you may want to consider adding sample memory to your
K2600. SIMMS (Single In-line Memory Modules) are available at your dealer, or at most
computer stores or mail-order houses. Be sure to read
Choosing and Installing SIMMs for K2600
Sample Memory
on page 9-2 of the
MusicianÕs Reference
before you go SIMM shopping, though.
At a sampling rate of 44.1 KHz, each megabyte of sample RAM that you add increases your
sample time by about 11.5 seconds (5.5 seconds for stereo samples). At 48KHz, each megabyte
gives you about 10 seconds of mono sampling, and about 5 seconds of stereo sampling.
Table 14-1 lists a few standard sample RAM conÞgurations and their total sample time
capacity (in seconds) at various sample rates.
Mode
Use the Mode parameter to select mono or stereo sampling. (Keep in mind that stereo samples
take up twice as much memory as mono samples.) Use a value of
Mono
for a mono signal. You
can use either
Mono(L)
or
Mono(R)
to isolate either the left or right side of a stereo signal.
Audio sampling input doubles as a two channel ÒdrumÓ trigger, allowing audio signals to
trigger samples. On the SampleMode page, set Mode to
Trigger
. Adjust Thresh to control
triggering sensitivity. This triggers the currently assigned click program. The left input will
trigger click key note number +1, right input will trigger click key +2. The click key and click
program can be accessed on the Song-mode MISC page.
Total
RAM
Sampling
Mode
Sampling Rate in KHz
29.4 32.0 44.1 48.0
16M
Mono
4:20 4:16 3:04 2:48
Total
Sampling
Time
(min:sec)
Stereo
2:16 2:08 1:28 1:20
32M
Mono
9:20 8:32 6:08 5:36
Stereo
4:32 4:16 2:56 2:40
64M
Mono
18:40 17:04 12:16 11:12
Stereo
9:04 8:32 5:52 5:20
128M
Mono
37:20 34:08 24:32 22:24
Stereo
18:08 17:04 11:44 10:40
Table 14-1 RAM and Sampling Capacity
To Next Page
Loading...
Need help?
General
