Sökning: "Dereverberation"

Hittade 4 uppsatser innehållade ordet Dereverberation.

  1. 1. Extraction of Loudspeaker- and room impulse responses under overlapping conditions

    Uppsats för yrkesexamina på avancerad nivå, Uppsala universitet/Signaler och system

    Författare :Felix Gustafsson; [2022]
    Nyckelord :Signal processing; Optimization; Acoustics; Dereverberation; Sparse deconvolution; Multipath propagation;

    Sammanfattning : A loudspeaker is often considered to be a Linear Time Invariant (LTI) system, which can be completely categorized by its impulse response. What sets loudspeakers apart from other LTI-systems is the acoustical aspect including echoes, which makes it a lot harder to take accurate noise free measurements compared to other LTI-systems such as a simple RC circuit. LÄS MER

  3. 2. SINGLE CHANNEL SPEECH DEREVERBERATION FOR ACOUSTIC SIGNALS

    Master-uppsats, Blekinge Tekniska Högskola/Sektionen för ingenjörsvetenskap

    Författare :Manoj Dinakaran; Rotu Ramakrishna Prasad.; [2013]
    Nyckelord :Reverberation; Acoustics; Adaptive filters;

    Sammanfattning : Reverberation in speech is one of the primary factors caused by delayed image of speech signal plus the intended speech signals. Reverberation degrades the quality of the speech signal when recorded by a distant microphone and in the hands free telephonic scenarios. LÄS MER

  4. 3. Algorithms for estimating reverberation characteristics for single channel dereverberation

    Master-uppsats, KTH/Signalbehandling

    Författare :Emre Yilmaz; [2010]
    Nyckelord :;

    Sammanfattning : Speech enhancement systems achieving a joint suppression of reverberation and background noise can be used in digital hearing aids, voice controlled systems or hands-free telephony. Demanding requirements for computational complexity, signal delay and speech quality must be fulfilled in order to achieve a satisfactory performance. LÄS MER

  5. 4. A survey on methods for blind acoustic dereverberation

    Magister-uppsats, Blekinge Tekniska Högskola/Avdelningen för signalbehandling

    Författare :Isaac Osunkunle; Sayedali Shekarchi; [2007]
    Nyckelord :blind identification; inverse filtering; frequency domain; least squares;

    Sammanfattning : Reverberation is a phenomenon in auditoriums such as concert halls and churches. Reverberation consists of a combination of multiple echoes, and its intensity and duration depend on factors such as the dimensions of the enclosure, materials used in construction and shape. LÄS MER