Essays about: "Return Loss Enhancement ERLE"

Found 5 essays containing the words Return Loss Enhancement ERLE.

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

    University essay from Blekinge Tekniska Högskola/Sektionen för ingenjörsvetenskap

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

    Abstract : 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. READ MORE

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

    University essay from Institutionen för fysik

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

    Abstract : 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. READ MORE

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

    University essay from Blekinge Tekniska Högskola/Sektionen för ingenjörsvetenskap

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

    Abstract : 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. READ MORE

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

    University essay from Blekinge Tekniska Högskola/Sektionen för ingenjörsvetenskap

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

    Abstract : 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. READ MORE

  6. 5. Performance Analysis of Adaptive Algorithms based on different parameters Implemented for Acoustic Echo Cancellation in Speech Signals

    University essay from Blekinge Tekniska Högskola/Sektionen för ingenjörsvetenskap

    Author : Swathi Kotte; [2011]
    Keywords : least mean square LMS Algorithm; Leaky Least mean square LLMS Algorithm; Normalized Least Mean Square NLMS Algorithm and Recursive Least Square RLS Algorithm ; additive white Gaussian noise ; Return Loss Enhancement ERLE ; signal to noise ratio;

    Abstract : Echo cancellation in voice communication is a process of removing the echo to improve the clarity, quality of the voice signals by suppressing the silence signal which prevents echoes during transmission through networks. There are two types of echo in voice communication: Hybrid echo cancellation and Acoustic echo cancellation. READ MORE