Essays about: "Microphone Array"

Showing result 16 - 20 of 43 essays containing the words Microphone Array.

1. 16. 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. 17. Implementation and evaluation of spectral subtraction (SS) with minimum statistics and wiener beamformer combination

   University essay from Blekinge Tekniska Högskola/Sektionen för ingenjörsvetenskap

   Author : Venkata Rami Reddy Datla; [2013]
   Keywords : Direction Of Arrival DOA ; Wiener Beamformer; Microphone Array; SNRI ;

   Abstract : In mobile communication systems, speech signal can be distorted by acoustic noise such as babble speech noise. Such kind of noises can distort the quality of speech signal to a high extent. READ MORE

4. 18. 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

5. 19. Combining Beamforming and Blind Source Separation to Improve Source Separation Performance

   University essay from Blekinge Tekniska Högskola/Sektionen för ingenjörsvetenskap

   Author : Written: Aishwarya Sivaramakrishnan; Ruben Johnson Robert Jeremiah; [2013]
   Keywords : Blind Source Separation; Beamforming; Combining Technique; ICA; Frequency Domain BSS;

   Abstract : Beamforming (BF) and Blind Source Separation (BSS) are always two interesting methodologies to witness in order to separate two sources. BSS in frequency domain have been facing a serious issue of permutation ambiguity while performing source separation using Independent Component Analysis (ICA). READ MORE

6. 20. Adaptive Sub band GSC Beam forming using Linear Microphone-Array for Noise Reduction/Speech Enhancement.

   University essay from Blekinge Tekniska Högskola/Sektionen för ingenjörsvetenskap

   Author : Mamun Ahmed; [2012]
   Keywords : Generalized Side lobe Canceller GSC ; Blocking matrix; Microphone array; Sub band; SNR. ;

   Abstract : This project presents the description, design and the implementation of a 4-channel microphone array that is an adaptive sub-band generalized side lobe canceller (GSC) beam former uses for video conferencing, hands-free telephony etc, in a noisy environment for speech enhancement as well as noise suppression. The side lobe canceller evaluated with both Least Mean Square (LMS) and Normalized Least Mean Square (NLMS) adaptation. READ MORE