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| Content Provider | ACM Digital Library |
|---|---|
| Author | Hayat-Dawoodi, K. Kunc, V. Pauritsch, M. Alminde, O. |
| Abstract | A first CMOS chip, containing line interface/speech, power extraction, loudhearing, handsfree, DC/DC converter and ringer amplifier in a 28 pin package powered only from the line, is presented. The chip provides an enhanced anti-Larsen circuit to prevent acoustic howling in loudhearing mode and a revolutionary "handsfree mode" voice control system which is virtually independent of any background noise and works in a dynamic half duplex as close to full duplex as the acoustic loop gain allows. This paper describes the architectural features of the system and the design of the main building blocks of the integrated circuit. |
| File Format | |
| ISBN | 0818670398 |
| Language | English |
| Publisher | Association for Computing Machinery (ACM) |
| Publisher Date | 1995-03-06 |
| Access Restriction | Subscribed |
| Subject Keyword | Cmos integrated circuits Power extraction Anti-larsen circuit Line interface Loudhearing Cmos technology Dc/dc converter Mixed analogue-digital integrated circuits Dynamic half duplex Gain control Ringer amplifier Voice control system 28 pin package Telephone interference Interference suppression Acoustic howling prevention Audio systems Cmos chip Integrated circuit Telephony Telephone sets Handsfree operation Universal telephone audio circuit |
| Content Type | Text |
| Resource Type | Article |
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