Sample Extraction Technique Is Necessary For Various Other...

Mel cepstral feature extraction technique is required in some or the other form in most of the latest speech and speaker recognition system. Here, first samples of speech are splitted into overlapping frames. Generally the length of frame is 25 ms and frame rate is 10 ms. Each and every frames are refined by pre-emphasis filter which amplifies higher frequencies. Next is to apply windowing so that Fourier spectrum for each windowing frame is achieved here Hamming window is used. To obtain vector of log energy, Mel spaced bank of filter is used which varies from 20 to 40 depending upon the requirement of particular application. The output of which is converted to give cepstral coefficients using DCT. Initially for computing the feature vector, 12 coefficients are obtained along with one energy make its 13 cepstral coefficient. The extended MFCC consist of triple differentiation. 1St order differentiation is known as Delta coefficient is denoted by _D which has 13 delta cepstral coefficients. 2Nd order differentiation is known as Acceleration coefficient is denoted by _A having 13 delta delta coefficients. 3Rd order differentiation is known as Third order (Triple delta) coefficient is denoted by _T which again has 13 triple delta coefficients. Its is said that standard MFCC is given by 39 feature vector and extended is given by 52 standard vector [1]. When training and testing is performed in noisy environment, there is severe mismatch which also effects the features.Show MoreRelatedContemporary Issues in Management Accounting211377 Words   |  846 Pagesregistered trade mark of Oxford University Press in the UK and in certain other countries Published in the United States by Oxford University Press Inc., New York ß Oxford University Press 2006 The moral rights of the author have been asserted Database right Oxford University Press (maker) First published 2006 All rights reserved. No part of this publication may be reproduced, stored in a retrieval system, or transmitted, in any form or by any means, without the prior permission in writing of Oxford UniversityRead MoreManaging Information Technology (7th Edition)239873 Words   |  960 PagesCONTENTS: CASE STUDIES CASE STUDY 1 Midsouth Chamber of Commerce (A): The Role of the Operating Manager in Information Systems CASE STUDY I-1 IMT Custom Machine Company, Inc.: Selection of an Information Technology Platform CASE STUDY I-2 VoIP2.biz, Inc.: Deciding on the Next Steps for a VoIP Supplier CASE STUDY I-3 The VoIP Adoption at Butler University CASE STUDY I-4 Supporting Mobile Health Clinics: The Children’s Health Fund of New York City CASE STUDY I-5