A copy of this work was available on the public web and has been preserved in the Wayback Machine. The capture dates from 2017; you can also visit the original URL.
The file type is application/pdf.
Filters
Nonlinear acoustic echo control using an accelerometer
2009
2009 IEEE International Conference on Acoustics, Speech and Signal Processing
Preserved Fulltext
We propose a novel scheme for nonlinear acoustic echo cancellation where an accelerometer sensor captures loudspeaker vibration and this sensor signal is used along with the error signal to adapt the adaptive ...
Experiments with an accelerometer mounted on the magnet of a hands-free kit show an echo reduction improvement by as much as 15 dB in situations of nonlinear loudspeaker distortion. ...
The acoustic echo signal in such a case contains a mixture of linear and nonlinear distortion components. ...
doi:10.1109/icassp.2009.4959833
dblp:conf/icassp/GuptaSS09
fatcat:bz5jarjv3jd6jkq34kdi5qyz4e
Nonlinear echo cancellation using generalized power filters
2015
2015 IEEE International Workshop of Electronics, Control, Measurement, Signals and their Application to Mechatronics (ECMSM)
Preserved Fulltext
A copy of this work was available on the public web and has been preserved in the Wayback Machine. The capture dates from 2017; you can also visit the original URL.
The file type is application/pdf.
These filters model the unknown nonlinear system as a set of monomials, followed by a set of linear systems. ...
We propose to replacing the monomials by a set of basis functions which resemble known real-world nonlinear distortions. ...
ACKNOWLEDGMENT This work was supported by The Czech Science Foundation through Project No. 14-11898S. ...
doi:10.1109/ecmsm.2015.7208689
fatcat:spyq2cvuu5auve3h4igd5v4gju
Spectral feature-based nonlinear residual echo suppression
2013
2013 IEEE Workshop on Applications of Signal Processing to Audio and Acoustics
Preserved Fulltext
A copy of this work was available on the public web and has been preserved in the Wayback Machine. The capture dates from 2016; you can also visit the original URL.
The file type is application/pdf.
We also present a low complexity real-time implementation combining an offline-trained network with online adaptation, and investigate its performance in terms of echo suppression and speech distortion ...
We propose a method for nonlinear residual echo suppression that consists of extracting spectral features from the far-end signal, and using an artificial neural network to model the residual echo magnitude ...
The speech signals for the evaluation were recorded in a reverberant environment with T60 ≈ 0.3 s. ...
doi:10.1109/waspaa.2013.6701825
dblp:conf/waspaa/SchwarzHK13
fatcat:mkihbxb5mvffbh267jnp7mmapq
Nonlinear residual acoustic echo suppression for high levels of harmonic distortion
2008
Proceedings of the IEEE International Conference on Acoustics, Speech and Signal Processing
Preserved Fulltext
A copy of this work was available on the public web and has been preserved in the Wayback Machine. The capture dates from 2018; you can also visit the original URL.
The file type is application/pdf.
Low-quality speakers and poorly-designed enclosures that produce vibrations often generate harmonic distortion, and this nonlinear effect degrades the performance of linear AEC algorithms considerably. ...
In this work, we present a new AEC architecture that consists of a linear, subband adaptive AEC filter followed a nonlinear residual echo suppression (RES) stage specifically designed to address harmonic ...
Common sources of nonlinear distortion include low-quality speakers, overpowered amplifiers and poorly-designed enclosures; even modest nonlinear distortion can degrade the performance of linear AEC models ...
doi:10.1109/icassp.2008.4517596
dblp:conf/icassp/BenderskySM08
fatcat:2gqq3wnjanf23dpzyi4eanmcoy
Characterisation and modelling of non-linear loudspeakers
2014
2014 14th International Workshop on Acoustic Signal Enhancement (IWAENC)
Preserved Fulltext
A copy of this work was available on the public web and has been preserved in the Wayback Machine. The capture dates from 2017; you can also visit the original URL.
The file type is application/pdf.
Results show the potential of the approach but also the challenge in estimating reliable non-linear models which accurately predict the response to complex real-speech inputs. ...
Approaches to non-linear acoustic echo cancellation for mobile devices all require a reliable, non-linear model of the loudspeaker. ...
One explanation for this behaviour lies in the wider variation in amplitude for speech signals compared to sine-sweep signals; lower amplitude speech signals may provoke significantly less non-linear distortion ...
doi:10.1109/iwaenc.2014.6953353
dblp:conf/iwaenc/GudupudiBE14
fatcat:pqkrvanmwjeljlc3tjhtkw2uj4
Pitch Analysis-Based Acoustic Echo Cancellation Over A Nonlinear Channel
2002
Zenodo
Preserved Fulltext
A copy of this work was available on the public web and has been preserved in the Wayback Machine. The capture dates from 2020; you can also visit the original URL.
The file type is application/pdf.
Publication in the conference proceedings of EUSIPCO, Toulouse, France, 2002 ...
These low-bit-rate codecs introduce severe distortions of the speech signal in terms of waveforms. ...
In practice, the computational complexity of a pitch predictor is remarkably reduced by searching the pitch parameters in the following steps. ...
doi:10.5281/zenodo.54072
fatcat:gk7lnvjilbaopkpyzotjz7fqiq
Residual Echo Suppression Considering Harmonic Distortion and Temporal Correlation
2020
Applied Sciences
Preserved Fulltext
A copy of this work was available on the public web and has been preserved in the Wayback Machine. The capture dates from 2020; you can also visit the original URL.
The file type is application/pdf.
To exploit residual echo estimates and microphone signals in past frames without the adverse effect of the near-end speech and noise, we adopt a double-talk detector which is tuned to have a low false ...
In acoustic echo cancellation, a certain level of residual echo resides in the output of the linear echo canceller because of the nonlinearity of the power amplifier, loudspeaker, and acoustic transfer ...
In addition to the temporal correlation of the far-end speech signal or the filtered version of it that can help the estimation of the residual echo, the nonlinear part of the echo signal may have its ...
doi:10.3390/app10155291
fatcat:zn5ftotiyrg5lhns7yhjfp27ri
Nonlinear Acoustic Echo Cancellation with Deep Learning
[article]
2021
arXiv
pre-print
Preserved Fulltext
A copy of this work was available on the public web and has been preserved in the Wayback Machine. The capture dates from 2021; you can also visit the original URL.
The file type is application/pdf.
We propose a nonlinear acoustic echo cancellation system, which aims to model the echo path from the far-end signal to the near-end microphone in two parts. ...
Second, the network is succeeded by a standard adaptive linear filter that constantly tracks the echo path between the loudspeaker output and the microphone. ...
eliminating the term y (n) −ŷ (n), without distorting the speech signal s (n). ...
arXiv:2106.13754v1
fatcat:bawf5lciarf3nonzzjtbtqgaue
Acoustic echo suppression using a learning-based multi-frame minimum variance distortionless response filter
[article]
2022
arXiv
pre-print
Preserved Fulltext
A copy of this work was available on the public web and has been preserved in the Wayback Machine. The capture dates from 2022; you can also visit the original URL.
The file type is application/pdf.
The MFMVDR filter with parameter estimation which was used in speech enhancement problems is extended in this study from a deep learning perspective. ...
The negative scale-invariant signal-to-distortion ratio is employed as the loss function in training the network at the output of the MFMVDR filter. ...
This work was supported by the Ministry of Science and Technology (MOST), Taiwan, under the project number 110-2221-E-007-027-MY3. ...
arXiv:2205.03594v1
fatcat:m753lkmq7ve6piwfoyhumx4rha
Experiments on RF Band Communications Using Chaos
1997
International Journal of Bifurcation and Chaos in Applied Sciences and Engineering
Preserved Fulltext
A copy of this work was available on the public web and has been preserved in the Wayback Machine. The capture dates from 2017; you can also visit the original URL.
The file type is application/pdf.
This paper presents experimental results of wire-line and wireless analog information transmission in RF band via chaos using standard signal formation and reception methods. ...
This study is supported in part by a grant from the Russian Foundation for Fundamental ...
Acknowledgments The authors would like to thank Yu. V. Andreyev for useful comments and help in preparing this paper. ...
doi:10.1142/s0218127497001680
fatcat:xhsi7zs5hfctnel3q43f5edzde
Complex Cepstrum Based Voice Conversion Using Radial Basis Function
2014
ISRN Signal Processing
Preserved Fulltext
A copy of this work was available on the public web and has been preserved in the Wayback Machine. The capture dates from 2020; you can also visit the original URL.
The file type is application/pdf.
The radial basis function is explored to capture the nonlinear mapping function for modifying the complex cepstrum based real and imaginary components of the vocal tract and source excitation of the speech ...
The Mel log spectral approximation filter is used to reconstruct the speech signal from the modified Mel cepstrum envelope and fundamental frequency. ...
Conflict of Interests The authors declare that there is no conflict of interests regarding the publication of this paper. ...
doi:10.1155/2014/357048
fatcat:7r7aeiqfubbujdavcaroy5s66u
On perceptual distortion measures and parametric modeling
2008
Journal of the Acoustical Society of America
Preserved Fulltext
A copy of this work was available on the public web and has been preserved in the Wayback Machine. The capture dates from 2017; you can also visit the original URL.
The file type is application/pdf.
We discuss the inherent tradeoffs in choosing a perceptual distortion measure and a parametric model, and the pros and cons of various ways of implementing such perceptual distortion measures are discussed ...
An important question that we seek to answer is whether perception should be taken into account in the estimation of model parameters or this should be done in a separate step. ...
Therefore, if a low-order model is desired for low-complexity processing or transmission using a low bit-rate, such an approach is very convenient. ...
doi:10.1121/1.2935505
fatcat:zn5najbdabctlp5nyz3hzsmz4m
A Fast Gradient Approximation for Nonlinear Blind Signal Processing
2012
Cognitive Computation
Preserved Fulltext
A copy of this work was available on the public web and has been preserved in the Wayback Machine. The capture dates from 2017; you can also visit the original URL.
The file type is application/pdf.
This is the case, for example, in speech processing, spike signals deconvolution or microarray data analysis. ...
In this paper, we propose a simple method to reduce computational time for the inversion of Wiener systems or the separation of post-nonlinear mixtures, by using a linear approximation in a minimum-mutual ...
Acknowledgements We would like to thank the anonymous Reviewers for their useful and insightful comments which helped us to considerably improve this work. ...
doi:10.1007/s12559-012-9192-x
fatcat:ipyned4pvzewfcorqkk7eih4ya
Nonlinear Residual Echo Suppression Using a Recurrent Neural Network
2020
Interspeech 2020
Preserved Fulltext
A copy of this work was available on the public web and has been preserved in the Wayback Machine. The capture dates from 2020; you can also visit the original URL.
The file type is application/pdf.
We evaluate the performance of our system in terms of Echo Return Loss Enhancement (ERLE), Signal to Distortion Ratio (SDR) and Word Error Rate (WER), obtained during realistic double-talk situations. ...
The acoustic front-end of hands-free communication devices introduces a variety of distortions to the linear echo path between the loudspeaker and the microphone. ...
Ideally, the filter mismatchH and the non-linearity fNL(·) are small, so that the residual signal contains only the near-end speech signal S(k, t). ...
doi:10.21437/interspeech.2020-1473
dblp:conf/interspeech/PfeifenbergerP20
fatcat:5z3r6j6vgzdexbudzzdgayn23i
Digital predistortion based on envelope feedback
2012
2012 IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP)
Preserved Fulltext
A copy of this work was available on the public web and has been preserved in the Wayback Machine. The capture dates from 2017; you can also visit the original URL.
The file type is application/pdf.
A new digital predistortion (DPD) technique based on envelope feedback is proposed for linearization of power amplifiers (PAs). ...
It is shown that the complex envelope of the PA output can be estimated from the two envelope feedbacks if the sign of the phase distortion of the AM-PM characteristic remains the same for all PA input ...
In this method, a post distorter in the feedback path is updated, and the parameters of the post distorter are copied to the DPD in the feedforward path as shown in Fig. 2 . ...
doi:10.1109/icassp.2012.6288588
dblp:conf/icassp/SoCAJL12
fatcat:axm6egnzrvgjbfbzq6qm4lurtu
« Previous
Showing results 1 — 15 out of 6,112 results