Korg microSAMPLER Owner's Manual: Sampling; Preparations For Sampling

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Sampling

The illustration below shows the process of sampling, in which the level of
the analog signal is read as digital data at fixed intervals along the time axis.
Level
Analog waveform
Level
Sampled digital
waveform
This fixed interval is the sample rate, usually stated as the sampling fre-
quency. A sampling frequency of 48 kHz (kilohertz) means that sampling
occurs 48000 times each second, so the interval would be 1 (second) / 48000
(times) = approximately 0.00002083 (seconds) = approximately 0.02083 ms
(milliseconds).
The higher the sampling frequency, the closer the waveform will be to the
original analog signal.
What is a "sample"?
The data captured into memory by the sampling process is called a "sam-
ple." The sample consists of the actual waveform data along with sample
parameters that specify how this data will be played.
What is the "sampling source"?
When capturing a sample, the sound from the audio device or microphone
is called the "sampling source."
Time
48 kHz
= 48000 times each second
= 0.0208 mS intervals
Time
When you sample from a mic, the sound of operations performed on the
microSAMPLER (e.g., the sound of a button being pressed) might be cap-
tured as well. If this is a problem, you can take the steps described on the
pages listed below.
(☞p.24 "TRIGGER")
(☞p.40 "STRT.TRIM/END TRIM")
1. Preparations for sampling
In this example, we'll sample the output from your audio device or rhythm
machine.
First we'll make preparations for inputting from the AUDIO IN [L/MONO]
and [R] jacks.
1.
Turn the rear panel AUDIO IN [GAIN] knob all the way to MIN, and
connect your output audio device to the AUDIO IN [L/MONO] and [R]
jacks.
2.
Set the rear panel [
/LINE] switch to the "LINE" position.
3.
Use the [INPUT SELECT] button to select "AUDIO IN."
If you want to perform resampling (☞p.26 "8. Resampling"), select "RE-
SAMPLE."
4.
Adjust the output level of your external device and the rear panel
AUDIO IN [GAIN] knob so that the [AUDIO IN LEVEL] LED does not
light red even when your external device is producing its maximum
level.
1.2
3
Quick start
Adjust so that [AUDIO IN LEVEL] LED
does not light red
17

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  • Mel J Dec 11, 2015 04:20:
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  • Yu Gwang Jae Oct 02, 2014 07:25:
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