Datasheet4U Logo Datasheet4U.com

UPD7759 - ADPCM SPEECH SYNTHESIZER LSIs

Datasheet Summary

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 bps : 256 (MAX. ) Melodies & sound effects Note2 (PCM + waveform element) 340 sec. (TYP. ) µ PD7759 1 Mbits Note 1. The synthesizing time for the speech is the value for a 6 kHz sampling. 2. The syn.

📥 Download Datasheet

Datasheet preview – UPD7759

Datasheet Details

Part number UPD7759
Manufacturer NEC
File Size 183.71 KB
Description ADPCM SPEECH SYNTHESIZER LSIs
Datasheet download datasheet UPD7759 Datasheet
Additional preview pages of the UPD7759 datasheet.
Other Datasheets by NEC

Full PDF Text Transcription

Click to expand full text
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 natural speech sounds, and the PCM + waveform element method is for the synthesis of sound effects and melodies. And by using them together, the µ PD7759 realizes the long-time synthesis of high-quality sounds.
Published: |