Acoustic Echo Cancellation Student: Yi-Chi Huang Wei Chou Supervisor: Bram Cornelis Final...
-
Upload
imogene-norris -
Category
Documents
-
view
225 -
download
0
description
Transcript of Acoustic Echo Cancellation Student: Yi-Chi Huang Wei Chou Supervisor: Bram Cornelis Final...
Acoustic Echo Cancellation
Student: Yi-Chi Huang Wei ChouSupervisor: Bram Cornelis
Final presentation 4/12/08
Overview
Review Block-LMS FDAF PBFDAF
Performance(PBFDAF) Constant step-size Adaptive step-size
Conclusion
Review
Block-LMS
FDAF
PBFDAF
Performance
Music case
Performance
Randn caseMic:[1,1,1]Loud speaker [1.2,1.2,1.2]Room dimension [37,37,39]Reflection coeficient [1,1,1,1,1,1]Filter lenght 2048Sampling frequency 8000
Performance
Randn caseBlock length = 16Near end = randn(100000,1)Far end = randn(100000,1)
Performance
Randn case
Performance
Randn case
Performance
Randn caseCaculate
several times(R) during a block time
Performance
Randn caseFilter length = 64Block length = 16Near end = randn(100000,1)Far end = randn(100000,1)
Performance
Randn case
Performance
Randn case
Performance
Change Block length
Performance
Constant step-size
Performance
Adaptive step-size
Performance
Performance
Reference [1] Eneman, K.; Moonen, M. On Iterating the
Partitioned Block Frequency-Domain Adaptive Filter [2] JOHN J. SHYNK. Frequency-Domain and.
Multirate Adaptive Filtering. [3] Gerald Enzner, Peter Vary. ROBUST AND
ELEGANT, PURELY STATISTICAL ADAPTATION OF ACOUSTIC ECHO CANCELER AND POSTFILTER