tailieunhanh - SPEECH CODING ALGORITHMS Foundation and Evolution of Standardized Coders

My first contact with speech coding was in 1993 when I was a Field Application Engineer at Texas Instruments, Inc. Soon after joining the company I was assigned to design a demo prototype for the digital telephone answering device project. Initially I was in charge of hardware including circuit design and printed circuit board layout. The core of the board consisted of a microcontroller sending commands to a mixed signal processor, where all the signal processing tasks— including speech coding—were performed. In those days a major concern was the excessive cost associated with random-access memory (RAM), and compressing the digital speech before storing was almost a mandatory requirement,. | SPEECH CODING ALGORITHMS SPEECH CODING ALGORITHMS Foundation and Evolution of Standardized Coders WAI C. CHU Mobile Media Laboratory DoCoMo USA Labs San Jose California WILEY- INTERSCIENCE A JOHN WILEY SONS INC. PUBLICATION Copyright 2003 by John Wiley Sons Inc. All rights reserved. Published by John Wiley Sons Inc. Hoboken New Jersey. Published simultaneously in Canada. No part of this publication may be reproduced stored in a retrieval system or transmitted in any form or by any means electronic mechanical photocopying recording scanning or otherwise except as permitted under Section 107 or 108 of the 1976 United States Copyright Act without either the prior written permission of the Publisher or authorization through payment of the appropriate per-copy fee to the Copyright Clearance Center Inc. 222 Rosewood Drive Danvers MA 01923 978-750-8400 fax 978-750-4470 or on the web at . Requests to the Publisher for permission should be addressed to the Permissions Department John Wiley Sons Inc. 111 River Street Hoboken NJ 07030 201 748-6011 fax 201 748-6008 e-mail permreq@. Limit of Liability Disclaimer of Warranty While the publisher and author have used their best efforts in preparing this book they make no representations or warranties with respect to the accuracy or completeness of the contents of this book and specifically disclaim any implied warranties of merchantability or fitness for a particular purpose. No warranty may be created or extended by sales representatives or written sales materials. The advice and strategies contained herein may not be suitable for your situation. You should consult with a professional where appropriate. Neither the publisher nor author shall be liable for any loss of profit or any other commercial damages including but not limited to special incidental consequential or other damages. For general information on our other products and services please contact our Customer Care Department within the . at

• Sinh học
• Speech Coders
• Period Estimation
• Autoregressive Model
• Autocorrelation Estimation
• Linear Prediction
• Algorithmic Implementation
• Nonuniform Quantization