Sharp directive beamforming using microphone array and planar reflector
نویسندگان
چکیده
منابع مشابه
Audio object separation using microphone array beamforming
Audio production is moving towards an object-based approach, where content is represented as audio together with metadata that describe the sound scene. From current object definitions, it would usually be expected that the audio portion of the object is free from interfering sources. This poses a potential problem for object-based capture, where microphones cannot be placed close to a source. ...
متن کاملCar Speech Enhancement Using Microphone Array Beamforming and Post Filters
This paper presents a speech enhancement method to suppress the car noise interference. A linear microphone array is adopted for far-talking speech acquisition and delayand-sum beamforming noise reduction. We exploit an effective time delay estimator using the coherence function between the reference microphone and the beamformed speech. To further enhance the beamformed speech, we design an im...
متن کاملSpeech Enhancement Using Nonlinear Microphone Array Based on Complementary Beamforming
This paper describes a spatial spectral subtraction method by using the complementary beamforming microphone array to enhance noisy speech signals for speech recognition. The complementary beamforming is based on two types of beamformers designed to obtain complementary directivity patterns with respect to each other. In this paper, it is shown that the nonlinear subtraction processing with com...
متن کاملAdaptive Beamforming Using a Microphone Array for Hands-Free Telephony
This thesis describes the design and implementation of a 4-channel microphone array that is an adaptive beamformer used for hands-free telephony in a noisy environment. The microphone signals are amplified, then sent to an A/D converter. The microprocessor board takes the data from the 4 channels and utilizes digital signal processing to determine the direction-of-arrival of the sources and cre...
متن کاملAn adaptive beamforming microphone array system using a blind deconvolution
This paper proposes an adaptive microphone array using blind deconvolution. The method realizes an signal enhancement based on the combination with beamforming using blind deconvolution, synchronized summation and DSA method. The proposed method improves a performance of estimation by the iterative operation of blind deconvolution using a cost-function base on the coherency function.
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Acoustical Science and Technology
سال: 2013
ISSN: 1346-3969,1347-5177
DOI: 10.1250/ast.34.253