Echo Cancellation in Speech and Data Transmission
نویسندگان
چکیده
منابع مشابه
Echo Cancellation in Speech and Data Transmission
Absrracr-lhis tutorial paper reviews echo cancellation techniques as applied to both voice and data transmission applications. The echo control problem in telephone voice transmission is described, and the several measures taken to counteract echo are outlined. The problem of full-duplex data transmission over two-wire lines is described, with application to both digital subscriber loop and voi...
متن کاملHDL Synthesis and Simulation of SLMS Adaptive Filter Algorithm for Echo Cancellation of Speech-Band Data Transmission
This paper deals with simulation of a Serial Least Mean Square (SLMS) adaptive filter algorithm for echo cancellation of speech-band data transmission with higher computational speed. A regular dial-up telephone network has been chosen for this application. Unlike the other conventional algorithms, SLMS algorithm is reliable, simple and has better convergence characteristics. An adaptation cons...
متن کاملScheme for Improved Residual Echo Cancellation in Packetized Audio Transmission
With the advent of packetized audio transmission, such as voice over IP (VoIP), and Voice over WLAN (VoWLAN), echo cancellation has put forth many challenging requirements. When an adaptive filter echo cancellation algorithm is used, its performance can be greatly increased, and its complexity can be reduced if it is only applied to the active regions in which echo exists. The proposed scheme e...
متن کاملSubband echo cancellation in automatic speech dialog systems
Echo cancellation has been most widely studied for hands-free telephony and for cancelling line echos in telephone central o ces. The problem of echo cancelling in speech dialog systems is similar, however it has some speci c requirements. In this contribution, a subband echo cancellation structure is proposed which can be integrated in the feature extraction part of a recognizer. A NLMS gradie...
متن کاملSimulation Of Echo Cancellation Of Speech Signal In Noisy Environment
Acoustic echo cancellation is important for audio teleconferencing when simultaneous communication of speech is necessary. In acoustic echo cancellation, a measured microphone signal contains two signals such as the near-end speech signal and the far-end echoed speech signal. The goal is to remove the far-end echoed speech signal from the microphone signal so that only the near-end speech signa...
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: IEEE Journal on Selected Areas in Communications
سال: 1984
ISSN: 0733-8716
DOI: 10.1109/jsac.1984.1146062