Results 151 to 160 of about 1,828 (248)

Research on De-cross-correlation Methods Based on Time Axis Perturbation in Multi-channel Acoustic Echo Cancellation

工程科学与技术, 2007
:a new de-cross-correlation preprocessing idea based on time axis perturbation method (TPM), which utilized the fact that hearing perception is not sensitive to the phase distortion of a speech signal, was proposed to solve the non-unique problem (NUP ...
doaj  

A Novel Nickel-Foam/Tungsten-Powder/Epoxy-Resin Backing Material for Medical Ultrasound Transducers. [PDF]

Sensors (Basel)
Wang H, Li Y, Zhu K, Zheng C, Ma J, Sun E, Qi X, Zhang R.   +7 more
europepmc   +1 more source

The Study of Acoustic Echo Cancellation in Reverberant Enclosure

, 2007
聲學迴音干擾問題，發生於通訊產品與音訊系統，舉凡有線話機、行動電話、免持聽筒、音響擴音器、助聽器、耳機麥克風…等等，其中皆包含兩大重要聲學元件：揚聲器與麥克風。當此二元件共同置於封閉空間或距離相近時，聲波能量足以由揚聲器傳入麥克風，所產生之聲學迴音將影響通訊品質，甚至造成聽覺上的不適。 本文根據適應性主動控制理論，與數位信號處理技術，採用有限脈衝響應（FIR）數位濾波器為系統架構，並以Normalized LMS演算法進行系統最佳化運算，利用類比/數位–數位/類比信號擷取轉換裝置，結合個人電腦為研發平台，
Lin, Ta-Chun, 林大鈞
core  

Numerical simulation and experimental verification of multi-highlight dual-target acoustic scattering based on multi-physics field coupling. [PDF]

Sci Rep
Li J, Zhang P, Zhang Y.
europepmc   +1 more source

Survey On Acoustic Echo Cancellation Based On Adaptive Filter

, 2015
In digital signal processing an Adaptive filtering constitutes one of the core technologies and finds numerous application areas in science as well as in industry.
Sinha, R. (Rahul), Sahu, K. (Kusum)
core  

Robust Data-Reuse Regularized Recursive Least-Squares Algorithms for System Identification Applications. [PDF]

Sensors (Basel)
Otopeleanu RA, Paleologu C, Benesty J, Dogariu LM, Stanciu CL, Ciochină S.   +5 more
europepmc   +1 more source

Ultrashort Echo Time Quantitative Susceptibility Source Separation in Musculoskeletal System: A Feasibility Study. [PDF]

J Imaging
Sedaghat S, Park JI, Fu E, von Drygalski A, Ma Y, Chang EY, Du J, Nardo L, Jang H.   +8 more
europepmc   +1 more source

Simultaneous extraction of photoelastic constants and strain profiles from picosecond ultrasonic echoes via spectral analysis. [PDF]

Photoacoustics
Tomoda M, Matsuda O, Tachizaki T, Wiltshaw R, Ogi H, Wright OB.   +5 more
europepmc   +1 more source

Contrast echocardiography: a practical guideline from the British Society of Echocardiography. [PDF]

Echo Res Pract, 2023
Hampson R, Senior R, Ring L, Robinson S, Augustine DX, Becher H, Anderson N, Willis J, Chandrasekaran B, Kardos A, Siva A, Leeson P, Rana BS, Chahal N, Oxborough D.   +14 more
europepmc   +1 more source

A Data-Reuse Semi-Blind Source Separation Approach for Nonlinear Acoustic Echo Cancellation

379383Nonlinear acoustic echo cancellation (NAEC) is of significant importance in acoustic telecommunication. To improve NAEC performance in the double-talk case, semi-blind source separation-based NAEC (SBSS-NAEC) algorithms have been proposed. However,
Yang, Yichen, Brendel, Andreas, Benesty, Jacob, Makino, Shoji, Wang, Xianrui, Zhang, Wen, Chen, Jingdong   +6 more
core   +1 more source