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Showing result 1 - 5 of 17 essays matching the above criteria.

  1. 1. Evaluation of the Perceived Speech Quality for G729D and Opus : With Different Network Scenarios and an Implemented VoIP Application

    University essay from Linköpings universitet/Informationskodning

    Author : Louise Almér; [2022]
    Keywords : Compression; Codec; audio; speech quality; quality of experience;

    Abstract : Communication has always been a vital part of our society, and day-to-day communication is increasingly becoming more digital. VoIP (voice over IP) is used for real-time communication, and to be able to send the information over the internet must the speech be compressed to lower the number of bits needed for transmission. READ MORE

  3. 2. A performance measurement of a Speaker Verification system based on a variance in data collection for Gaussian Mixture Model and Universal Background Model

    University essay from Malmö universitet/Fakulteten för teknik och samhälle (TS)

    Author : Zeid Bekli; William Ouda; [2018]
    Keywords : Speaker recognition; Speaker Verification; Speaker authentication; Speaker classification; Gaussian mixture model; Gaussian Mixture Model-Universal Background Model; Biometric System; Equal Error Rate; False Negative Rate; False Positive Rate; Mel Frequency Cepstrum Coefficients;

    Abstract : Voice recognition has become a more focused and researched field in the last century,and new techniques to identify speech has been introduced. A part of voice recognition isspeaker verification which is divided into Front-end and Back-end. READ MORE

  4. 3. Automatic acoustic tests of conference phones

    University essay from Uppsala universitet/Fasta tillståndets elektronik

    Author : Carl Christian Kirchmann; [2017]
    Keywords : Acoustics; Digital signal processing; total harmonic distortion; reverberation;

    Abstract : This master thesis was completed at Limes Audio in Umeå. Limes Audio are specialized in speech enhancement software which is mostly used in conference phones. Their software is used to reduce noise, echo cancellation as well as reduction of distortion. READ MORE

  5. 4. Implementation and Evaluation of Spectral Subtraction with Minimum Statistics using WOLA and FFT Modulated Filter Banks

    University essay from Blekinge Tekniska Högskola/Institutionen för tillämpad signalbehandling

    Author : Peddi Srinivas Rao; Vallabhaneni Sreelatha; [2014]
    Keywords : Speech Enhancement; Filter Bank; Spectral Subtraction; Wiener Filtering; PESQ; DFT ; Master of Science Programme in Electrical Engineering with emphasis on Signal Processing Masterprogram i Elektroteknik med inriktning mot signalbehandling;

    Abstract : In communication system environment speech signal is corrupted due to presence of additive acoustic noise, so with this distortion the effective communication is degraded in terms of the quality and intelligibility of speech. Now present research is going how effectively acoustic noise can be eliminated without affecting the original speech quality, this tends to be our challenging in this current research thesis work. READ MORE

  6. 5. Modulation Domain Improved Adaptive Gain Equalizer for Single Channel Speech Enhancement

    University essay from Blekinge Tekniska Högskola/Sektionen för ingenjörsvetenskap

    Author : Nettem.Adithyavalli ; Shakira Shaheen; [2013]
    Keywords : Speech Enhancement; Adaptive Gain Equalizer; Improved Adaptive Gain Equalizer;

    Abstract : Human speech is the main method for personal communication. During communication speech may get impaired with ubiquitous noise. Enduring interfering noise decreases speech intelligibility and makes speech communication troublesome. READ MORE