Open AccessNoise Reduction in Speech Coding Technique Used in GSM
Author(s) -
Miss Pratiksha D. Gadge,
Prof. S. S. Gundal
Publication year - 2019
Publication title -
international journal of innovative technology and exploring engineering
Language(s) - English
Resource type - Journals
ISSN - 2278-3075
DOI - 10.35940/ijitee.h7175.078919
Subject(s) - speech coding , pesq , gsm , speech recognition , computer science , coding (social sciences) , linear predictive coding , noise reduction , voice activity detection , harmonic vector excitation coding , vector sum excited linear prediction , sub band coding , speech enhancement , speech processing , code excited linear prediction , telecommunications , artificial intelligence , mathematics , statistics
The improvement in speech quality in mobile communication can be made by reducing the noise content. The low bit rate speech coding technique such as RPE-LTP in GSM with noise signal filtering can increase the complexity of complete mechanism. The paper presents noise signal reduction in RPE-LTP speech coding technique by using Zero Crossing Rate (ZCR) and pitch values. By using this technique quality measures of speech coding technique such as SNR, PESQ, MSE are improved as compared to RPE-LTP technique without affecting complexity