UPD7759 Datasheet (NEC) - ADPCM SPEECH SYNTHESIZER LSIs

UPD7759, ADPCM SPEECH SYNTHESIZER LSIs

DATA SHEET MOS INTEGRATED CIRCUIT µ PD7759 ADPCM SPEECH SYNTHESIZER LSIs The µ PD7759 is an external ROM type speech synthesis LSI employing the waveform coding method.

In addition to the ROM capability of up to 1 Mbit, the µ PD7759 realizes the synthesis of speech sounds of any length by using the ADPCM data transferred from an external ROM.

As the synthesizing method, it adopts the ADPCM method and the PCM + waveform element method.

The ADPCM method is suitable for synthesizing clear and na

UPD7759 Features

* 5 q Synthesizing method q Sampling frequency q Bit rate (speech) q Number of Messages 5 q External speech data ROM Parameters Speech data ROM (External) Products Speech (ADPCM) 50 sec. (TYP.) Synthesizing time Note1 : ADPCM, PCM + waveform element methods used together : 5, 6 or 8 kHz : 20 to 32 K