Title :
A single-chip controller for digital answering machines
Author :
Intrater, Gideon ; Falik, Ohad
Author_Institution :
National Semiconductor Ltd., Herzelia, Israel
fDate :
2/1/1993 12:00:00 AM
Abstract :
A single-chip controller for digital answering machines is introduced. Only two other devices, an audio quality DRAM (ARAM) and a codec, are needed to implement all the digital parts of such an answering machine. The device performs voice compression and decompression algorithms, dual-tone multifrequency (DTMF) detection, voice synthesis, and control functions of digital answering machines
Keywords :
DRAM chips; codecs; data compression; microcontrollers; signal detection; speech analysis and processing; speech synthesis; telephone station equipment; DTMF detection; audio quality DRAM; codec; control functions; digital answering machines; dual-tone multifrequency detection; single-chip controller; voice compression; voice decompression algorithms; voice synthesis; Codecs; Costs; Delta modulation; Detectors; Digital control; Digital integrated circuits; Microcontrollers; Random access memory; Switches; Telephony;
Journal_Title :
Consumer Electronics, IEEE Transactions on
