Sökning: "Echo Cancellation"

Visar resultat 16 - 20 av 23 uppsatser innehållade orden Echo Cancellation.

1. 16. An Acoustic Echo Cancellation System based on Adaptive Algorithm

   Master-uppsats, Blekinge Tekniska Högskola/Sektionen för ingenjörsvetenskap

   Författare :Veeratej Garre; Sailesh Kumar Mannem; [2012]
   Nyckelord :AEC; Reverberation; Adaptive algorithms; Adaptive filters;

   Sammanfattning : Adaptive filtering technique is one of the core technologies in digital signal processing and finds numerous application areas in science as well as in industry. Adaptive filtering technique is widely used in many applications, including echo cancellation, adaptive noise cancellation, adaptive beam forming and adaptive equalization. LÄS MER

3. 17. Simulation of microphone inaccuracies and robustness analysis of Beamformers inside a reverberant environment

   Master-uppsats, Blekinge Tekniska Högskola/Sektionen för ingenjörsvetenskap

   Författare :ADITYA SRI TEJA PALANKI; [2012]
   Nyckelord :Speech Enhancement; Beamformer; Reverberation; Hearing Aids; Noise Cancellation; Fractional Delay; Binaural hearing; Source localization; Echo Cancellation;

   Sammanfattning : All Speech Processing Equipments like noise cancelling headphones and Hearing aids should be able to filter different kinds of interfering signals and present a clear sound to the listener. The effect of these interfering signals varies depending on the surroundings. LÄS MER

4. 18. Performance analysis of Speech enhancement methods in Hands-free Communication with emphasis on Wiener Beamformer

   Master-uppsats, Blekinge Tekniska Högskola/Sektionen för ingenjörsvetenskap

   Författare :Santhu Renu Vuppala; [2012]
   Nyckelord :Beamformer; Speech Enhancement; Echo Cancellation.;

   Sammanfattning : The main objective of this thesis, which is a collaborative work between a group of four, is to remove the unwanted components i.e. background noise present in speech signal which affects in the hands-free speech communication. The background noise i. LÄS MER

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

   Master-uppsats, Blekinge Tekniska Högskola/Sektionen för ingenjörsvetenskap

   Författare :Swathi Kotte; [2011]
   Nyckelord :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;

   Sammanfattning : 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. LÄS MER

7. 20. Nonlinear Acoustic Echo Cancellation for Mobile Phones: A Practical Approach

   Master-uppsats, Institutionen för datavetenskap, fysik och matematik, DFM

   Författare :Anders Fhager; Jemal Mohammed Hussien; [2010]
   Nyckelord :nonlinear echo cancellation; mobile phones; speech processing; acoustic echo; RES; volterra; Hammerstien;

   Sammanfattning : Acoustic echo cancelation (AEC) composes a fundamental property of speech processing to enable a pleasant telecommunication conversation. Without this property of the telephone the communicator would hear an annoying echo of his own voice along with the speech from the other communicator. LÄS MER