University of Khartoum

SPEECH ANALYSIS AND SYNTHESIS

SPEECH ANALYSIS AND SYNTHESIS

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Title: SPEECH ANALYSIS AND SYNTHESIS
Author: HBIB ALLAH., EL_SIDDIG
Abstract: Although most people see the cell phone as an extension of conventional wired phone, the truth is that cell phone technology is extremely complex. If we take a closer look at the module that converts the electronic version of the speech signal into a sequence of bits, we see that for every 20 ms of input speech, a set of speech model parameters is computed and transmitted to the receiver. The receiver converts these parameters back into speech. The mechanism lies at the very heart of mobile phone transmission of speech is the linear predictive (LP) technique analysis–synthesis. In this project, linear prediction code LPC is used for speech analysis and synthesis by use a fully parametric model to efficiently encode the important information in human speech (speech analysis) and can produce intelligible speech at low data rates by recovering more characteristics of natural human speech(speech synthesis). We successfully developed and implemented a speech compression technique Linear Prediction Coding (LPC) using DSP System Toolbox™ functionality available at the MATLAB command line. The LPC analyzed speech by representing the electronic version of the speech signal into model parameters, And the synthesized the speech by converting these parameters back into speech. The analysis and synthesis results show that the LPC technique achieves smooth trajectories of the vocal-tract resonances together with a high time resolution, The resulting speech from this tool is sound as if the original, which is interesting for a variety of application.
Description: This project focuses on studying several techniques of speech analysis and synthesis and further implementing some of them in Matlab. Analyze the speech using PLC by representing the electronic version of the speech signal into model parameters. The objective in speech synthesis is to convert a string of parameters, or a sequence of words, into natural-sounding speech. Speech synthesis has also been used to aid scientists in learning about the mechanisms of human speech production, and thereby in the treatment of speech-related disorders.
URI: http://hdl.handle.net/123456789/36
Date: 2014-04-23


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