SPC11A Ver la hoja de datos (PDF) - Unspecified

Número de pieza

componentes Descripción

Fabricante

SPC11A

12KB Sound Controller

Unspecified 

Preliminary

SPC11A

6.9. Speech and Melody

Since the SPC11A provides a large ROM and wide range of CPU

operating speeds, it is the most suitable device for speech and

melody synthesis.

In speech synthesis, the SPC11A can use NMI for accurate

sampling frequency. The user can store the speech data in ROM

and play it back with realistic sound quality. Several algorithms

are recommended for high fidelity and compression of sound:

PCM, LOG PCM, and ADPCM.

In melody synthesis, the SPC11A provides a dual tone mode to

obtain melodious music. After selecting the dual tone mode, the

user only needs to program either TMA or TMB, or both TMA and

TMB to generate expected frequency for each channel. The

hardware will toggle the tone wave automatically without entering

into an interrupt service routine. The user can create musical

instruments or sound effects by simply controlling the envelope of

tone output.

© Sunplus Technology Co., Ltd.

7

Proprietary & Confidential

JUL. 09, 2001

Preliminary Version: 0.1

Share Link: