Akai MPC Operator's Manual download pdf (Page 124)

6.1 Overview

The MPC60 may hold up to 34 drum sounds in memory at one time, and

each may be up to 5.3 seconds in length, as long as the total combined

length does not exceed the total sampling time of 13.1 seconds, or 26.2

seconds if your machine has the sound memory expansion option. Each of

these drum sounds is referred to as a SOUND. Each of the sounds in

memory is assigned to one of the front panel drum pads- 16 in bank 1, and

16 in bank 2, for a total of 32. Each of these drum pads, or locations to

assign a sound, is referred to as a DRUM. However, there is one special

case- the hihat. As explained earlier in the section about the hihat pad and

slider, as the hihat slider is moved, playing the hihat pad will play one of 3

different hihat sounds- one for the closed hihat, one for a medium length

hihat and one for an open hihat. So, because there are 3 sounds for the

hihat, which is one of the 32 drums, there are actually 34 total sounds in

memory at one time.

The above stated sampling times all refer to a sampling rate of 40 KHz.

This is the only possible sampling rate in the MPC60, allowing the audio

quality to be very high, because all audio circuitry is optimized for lowest

noise and highest fidelity at this single sampling rate. Also, all audio

outputs operate at the fixed 40 KHz clock rate, regardless of the tunings

of the drums. Tuning is performed mathematically, without distortion

, by

the custom LSI sound chip. Using this method, all tuning, dynamic

control, envelope control, and mixing is done in the digital domain,

allowing for lowest noise and highest sound quality. The only analog

circuitry in the outputs is the final digital to analog conversion.

In this section of the manual, you will learn to:

• Sample a new sound.

• Edit the start, end, envelope, or velocity characteristics of an

existing sound.

• Cause two sounds to play when one pad is played, or to play one of two

sounds depending on the velocity level.

• Play a sound in reverse.

• Tune the drums.

• Adjust the echo mixer.

• Assign the 8 ASSIGNABLE MIX OUTPUTS.

• Transfer sounds over Midi using MIDI SAMPLE DUMP.

• Select MASTER or SEQUENCE mode for the stereo or echo mixes.

• Set the MPC60 to remember all real time changes made to the stereo

mixer and echo mixer, just like an automated mixer.

• Set the hihat decay slider thresholds.

• Trigger a drum from an external audio source.

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