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★ SOUND Manual ★ Sound development manual
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Sound Development Manual/1. Overview

■Structure of tone bank data (tone constituent elements)

The elements that make up the tone bank data will be explained in order of the smallest component.

Waveform data
This is the PCM data itself in AIFF format.

LAYER data
A LAYER is a basic tone unit that includes waveform data and data such as LFO, EG, PITCH, and FM settings. Volume can be controlled using MIDI velocity values, so by setting a velocity table for each LAYER, you can also implement velocity switches. 1LAYER=1 waveform. You can set up to 128 per voice.

VOICE data
Data that combines multiple LAYERs and adds data such as KEYSPLIT, volume for each LAYER, bend range, portamento, etc. Other synthesizer manufacturers call it a patch or a performance. You can set up to 128 in one bank. It changes in response to MIDI program changes.
VOICE data is the settings for which LAYER and how many to use, and which LAYER is played according to changes in pitch and volume.

mixer data
In addition to the above data, you can set 16 channels of mixing data such as the return amount from the DSP effect and pan (stereo position). You can set up to 128 in one bank.

A collection of the above components is called one tone bank data. One tone bank data has at least one voice, and can have up to 128 voices as long as memory allows. With this sound system, you can have multiple pieces of this tone bank data in the same map, and each can be played simultaneously as an independent sound source. Therefore, it is possible to play a song or sound effect in one bank while switching to another bank. This allows you to configure a flexible system with good development efficiency and memory efficiency.

For details, refer to the " Tone Editor User's Manual ".

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★ SOUND Manual ★ Sound development manual
Copyright SEGA ENTERPRISES, LTD., 1997