The Adaptive Line Enhancer (ALE) is widely used for
enhancing narrowband signals corrupted by broadband noise. In this
paper, we propose novel ALE methods to improve the enhancing
capability. The proposed methods are motivated by the fact that the
output of the ALE is a fine estimate of the desired narrowband signal
with the broadband noise component suppressed. The proposed
methods preprocess the input signal using ALE filter to regenerate a
finer input signal. Thus the proposed ALE is driven by the input signal
with higher signal-to-noise ratio (SNR). The analysis and simulation
results are presented to demonstrate that the proposed ALE has better
performance than conventional ALE’s.
[1] B. Widrow and S. D. Stearns, Adaptive Signal Processing, Englewood
Cliffs, NJ: Prentice Hall, 1985.
[2] S. Haykin, Adaptive Filter Theory, Englewood Cliffs, NJ: Prentice Hall,
1991.
[3] B. Widrow et al., “Adaptive noise cancelling: Principles and
applications," Proc. IEEE, vol. 63, pp. 1692-1716, Dec. 1975.
[4] J. R. Zeidler et al., “Adaptive enhancement of multiple sinusoids in
uncorrelated noise," IEEE Trans. Acoust., Speech, and Signal Processing,
vol. ASSP-26, pp. 240-254, June 1978.
[5] J. R. Treichler, “Transient and convergent behavior of the adaptive line
enhancer” IEEE Trans. Acoust., Speech, and Signal Processing, vol. 27,
pp. 53-62, Feb. 1979.
[6] J. Chang and J. R. Glover, Jr., “The feedback adaptive line enhancer: a
constrained IIR adaptive filter," IEEE Trans. Signal Processing, vol. 41,
pp. 3161-3166, Nov. 1993.
[1] B. Widrow and S. D. Stearns, Adaptive Signal Processing, Englewood
Cliffs, NJ: Prentice Hall, 1985.
[2] S. Haykin, Adaptive Filter Theory, Englewood Cliffs, NJ: Prentice Hall,
1991.
[3] B. Widrow et al., “Adaptive noise cancelling: Principles and
applications," Proc. IEEE, vol. 63, pp. 1692-1716, Dec. 1975.
[4] J. R. Zeidler et al., “Adaptive enhancement of multiple sinusoids in
uncorrelated noise," IEEE Trans. Acoust., Speech, and Signal Processing,
vol. ASSP-26, pp. 240-254, June 1978.
[5] J. R. Treichler, “Transient and convergent behavior of the adaptive line
enhancer” IEEE Trans. Acoust., Speech, and Signal Processing, vol. 27,
pp. 53-62, Feb. 1979.
[6] J. Chang and J. R. Glover, Jr., “The feedback adaptive line enhancer: a
constrained IIR adaptive filter," IEEE Trans. Signal Processing, vol. 41,
pp. 3161-3166, Nov. 1993.
@article{"International Journal of Electrical, Electronic and Communication Sciences:70976", author = "Young-Seok Choi", title = "Adaptive Line Enhancement of Narrowband Signal", abstract = "The Adaptive Line Enhancer (ALE) is widely used for
enhancing narrowband signals corrupted by broadband noise. In this
paper, we propose novel ALE methods to improve the enhancing
capability. The proposed methods are motivated by the fact that the
output of the ALE is a fine estimate of the desired narrowband signal
with the broadband noise component suppressed. The proposed
methods preprocess the input signal using ALE filter to regenerate a
finer input signal. Thus the proposed ALE is driven by the input signal
with higher signal-to-noise ratio (SNR). The analysis and simulation
results are presented to demonstrate that the proposed ALE has better
performance than conventional ALE’s.", keywords = "Adaptive filter, adaptive line enhancer, noise,
feedback.", volume = "9", number = "7", pages = "716-4", }