Essays about: "differential microphone"

Found 3 essays containing the words differential microphone.

  1. 1. Integrated Speech Enhancement Technique for Hands-free Mobile Phones

    University essay from Blekinge Tekniska Högskola/Sektionen för ingenjörsvetenskap

    Author : ANEESH KALUVA; [2013]
    Keywords : Beamformer; Speech enhancement; Hands-free communication; Spectral subtraction; anechoic; Noise suppression;

    Abstract : This thesis investigates the systems for hands-free mobile communication. In hands-free communication, there are various kinds of disturbances in the microphone reception due to the distance between the source and the receiver. The disturbances are mainly background noise and reverberation. READ MORE

  3. 2. MOBILE PHONE ACOUSTICS : PERFORMANCE EVALUATION OF SPECTRAL SUBTRACTION AND ELKO’S ALGORITHM USING SPEECH QUALITY METRICS

    University essay from Blekinge Tekniska Högskola/Sektionen för ingenjörsvetenskap

    Author : Sai Kiran Chittajallu; [2013]
    Keywords : Acoustics; PESQ; ELKOS; Spectral Subtraction; WOLA; Reverberation;

    Abstract : In recent years a great deal of effort has been expended to develop methods that determine the quality of speech through the use of comparative algorithms. These methods are designed to calculate an index value of quality that correlates to a mean opinion score given by human subjects in evaluation sessions. READ MORE

  4. 3. An Array of First Order Differential Microphone Strategies for Enhancement of Speech Signals

    University essay from Blekinge Tekniska Högskola/Sektionen för ingenjörsvetenskap

    Author : Naresh Reddy NagiReddy; Arun Kumar Korva; [2012]
    Keywords : speech enhancement; beamforming; microphone array; elko algorithm; wiener beamformer; differential microphone ;

    Abstract : The quality and intelligibility of speech is degraded with the presence of background noise in the speech signal, which affects the listeners ability to understand the speech clearly. Speech enhancement is the process with which the background noise can be suppressed to improve the quality and intelligibility of the speech signal. READ MORE