Sökning: "Echo return loss enhancement"

Visar resultat 1 - 5 av 6 uppsatser innehållade orden Echo return loss enhancement.

  1. 1. Acoustic echo cancellation inside a truck cabin

    Master-uppsats, Linköpings universitet/Statistik och maskininlärning

    Författare :Balaji Ramkumar; [2020]
    Nyckelord :Echo Cancellation; NLMS; Normalized Cross Correlation; Truck; Noise;

    Sammanfattning : In the modern world, a day without telecommunication is almost unimaginable. A telecommunication system is used in almost every sector. In earlier days only luxury cars had the feature of a hands free communication but now it has become one of the basic requirements in any segment of vehicles. LÄS MER

  3. 2. Stereo Echo Cancellation(SEC) employing Signal Decorrelation with emphasis on Affine Projection Algorithm(APA)

    Master-uppsats, Blekinge Tekniska Högskola/Sektionen för ingenjörsvetenskap

    Författare :Santosh Ande; [2013]
    Nyckelord :Affine Projection Algorithm APA ; Stereo Echo Cancellation SEC ; De-correlation; Non-linear Processing NLP ; Time Varying All-Pass Filter TV-APF ; ERLE; MIS.;

    Sammanfattning : Monophonic tele-conferencing systems employ acoustic echo cancellation (AEC) to reduce echoes that result from coupling between loudspeaker and microphone. Acoustic echo cancellation is simple to develope as there is a single channel. LÄS MER

  4. 3. Methods and algorithms for quality and performance evaluation of audio conferencing systems

    Master-uppsats, Institutionen för fysik

    Författare :Maria Palmqvist; [2013]
    Nyckelord :AEC; loudspeaker performance; audio conferencing systems; PESQ; MOS; THD; ERLE; CSD;

    Sammanfattning : In an audio conferencing system the sound from the loudspeaker is undesirably picked up by the microphone. This introduces echoes to the system. To remove the echoes an acoustic echo canceller can be built with an adaptive filter. LÄS MER

  5. 4. Speech Enhancement in Hands-Free Device (Hearing Aid) with emphasis on Elko's Beamformer

    Master-uppsats, Blekinge Tekniska Högskola/Sektionen för ingenjörsvetenskap

    Författare :TELAGAREDDI S N U V RAMESH; [2012]
    Nyckelord :Speech Enhancement; Speech intelligibility; Speech Communication and Beamforming ;

    Sammanfattning : In general, an uncontrolled environment may contain degradation components like background noise, speech from other speakers etc. along with required speech components. It is very tough to concentrate only on speech signals in presence of background noise for normal listeners and hearing impaired persons. LÄS MER

  7. 5. Acoustic Echo cancellation inside a Conference Room using Adaptive Algorithms

    Master-uppsats, Blekinge Tekniska Högskola/Sektionen för ingenjörsvetenskap

    Författare :Gannamaneni Geetha Chowdary; [2012]
    Nyckelord :Acoustic echo cancellation; Room modeling; Reverberation time; Signal to noise ratio; Echo return loss enhancement;

    Sammanfattning : The whole dimension of communications has been changed by the rapid growth of technology. Today people are more interested in hands-free com-mucation, which makes use of loud speaker and high gain microphone, in place of the old modeled wired telephone. LÄS MER