Title :
Measurement of echo path response
Author :
Kanchan, V. ; Gibson, Earl
Author_Institution :
Omni Tel, Inc., Fremont, CA, USA
fDate :
7/1/1988 12:00:00 AM
Abstract :
A method is presented to measure the echo path response using pseudonoise sequences. The autocorrelation properties of these sequences are shown to reduce the error in measurement. The optimal choice of taps to achieve echo cancellation is evaluated. This scheme is compared to the LMS adaptive algorithm. The LMS algorithm can achieve the same level of cancellation with proper choice of μ. However, the number of iterations required has not been considered. The optimum choice of taps is evaluated
Keywords :
correlation methods; echo suppression; iterative methods; measurement errors; signal processing; LMS adaptive algorithm; autocorrelation properties; echo cancellation; echo path response; iterations; measurement errors; pseudonoise sequences; taps; Acoustic measurements; Adaptive algorithm; Additive white noise; Autocorrelation; Correlators; Echo cancellers; Finite impulse response filter; Iterative algorithms; Least squares approximation; Shift registers; Signal processing algorithms;
Journal_Title :
Acoustics, Speech and Signal Processing, IEEE Transactions on
