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| "raw_str": "3.3 (16) i i y y\u02c6 t y [19][20] 1 t t t y y y (16) i y i \u0177 ' ' E N i i Clean i Noisy y y E 1 2 ) ( ) ( ' '", | |
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| "content": "<table><tr><td/><td/><td/><td/><td/><td/><td colspan=\"2\">s</td><td>t</td><td/><td/><td colspan=\"2\">h</td><td>t</td><td>n</td><td>t</td><td>y</td><td>t</td><td>s</td><td>t</td><td>h</td><td>t</td><td>n</td><td>t</td></tr><tr><td/><td/><td/><td/><td/><td/><td/><td/><td/><td/><td/><td/><td/><td/><td>(</td><td>)</td><td>(</td><td>)</td></tr><tr><td/><td/><td/><td/><td/><td/><td/><td/><td/><td/><td/><td/><td/><td/><td>(Speech Robustness) [11][12]</td></tr><tr><td/><td/><td colspan=\"12\">(Vector Quantization)</td><td>(Distributed Speech Recognition, DSR)</td></tr><tr><td/><td/><td/><td/><td/><td/><td/><td/><td/><td/><td colspan=\"4\">[10][15]</td><td>(Histogram Equalization)</td><td>[1] (THEQ)</td></tr><tr><td/><td colspan=\"4\">(1) (QHEQ)</td><td/><td/><td/><td/><td/><td colspan=\"5\">(Speech Enhancement) (Quantization Distortion)</td></tr><tr><td>2.1</td><td/><td/><td/><td/><td/><td/><td/><td colspan=\"7\">(Histogram Equalization, HEQ)</td></tr><tr><td/><td/><td colspan=\"13\">(Data Fitting) (Uncorrelated) (Table Look-Up based Histogram Equalization, THEQ)[10] (Inverse Function) (Noisy Speech)</td><td>(Clean</td></tr><tr><td>(</td><td/><td/><td colspan=\"2\">Speech)</td><td/><td colspan=\"2\">)</td><td/><td/><td/><td/><td/><td/><td>(Spectral Subtraction, SS)[2]</td><td>(Wiener (Mel-Frequency</td></tr><tr><td colspan=\"14\">Filter, WF)[3] Cepstral Coefficients, MFCC)</td><td>[16][17][18]</td></tr><tr><td/><td colspan=\"2\">(2)</td><td/><td/><td/><td/><td/><td/><td/><td colspan=\"5\">(Moving Average) (Quantile-based Histogram Equalization, QHEQ)[13,14] (Robust Speech Feature) [10][19][20]</td></tr><tr><td colspan=\"13\">(Transformation Function)</td><td colspan=\"2\">(Non-stationary Noise)</td></tr><tr><td/><td/><td/><td/><td/><td/><td/><td/><td/><td/><td/><td/><td/><td/><td>(Cepstrum Mean Subtraction, CMS)[4] (Grid Search) [19][20]</td><td>x</td><td>(Cepstrum</td></tr><tr><td/><td/><td/><td colspan=\"12\">Mean and Variance Normalization, CMVN)[5]</td><td>(Probability Density Function,</td></tr><tr><td colspan=\"4\">(3) PDF) p Test</td><td>x</td><td/><td/><td/><td/><td/><td/><td/><td/><td colspan=\"2\">(Acoustic Model Adaptation) (Data Fitting) x F x</td><td>y</td></tr><tr><td/><td colspan=\"9\">AURORA-2 y p Train p Test</td><td>x</td><td/><td/><td/><td>(Adaptation Data) (1)</td></tr><tr><td/><td>p</td><td colspan=\"2\">Train</td><td>y</td><td colspan=\"2\">p</td><td colspan=\"3\">Test</td><td>x</td><td/><td colspan=\"2\">dx dy</td><td>p</td><td>Test</td><td>(Mean Vector) dy F d y F 1 1</td><td>y</td><td>(Covariance Matrix)</td><td>(1)</td></tr><tr><td>1.</td><td colspan=\"2\">F 1</td><td colspan=\"12\">(Maximum a Posteriori, MAP)[6] Regression, MLLR)[7] y x F (Inverse Function)</td><td>(Maximum Likelihood Linear (Cumulative</td></tr><tr><td colspan=\"15\">(Automatic Speech Recognition, ASR) Probability Density Function, CDF) (CMVN) 2. dx x p x x C Test Test</td><td>(CMS)</td></tr><tr><td/><td/><td/><td/><td colspan=\"3\">F</td><td>x</td><td/><td>p</td><td colspan=\"2\">Test</td><td colspan=\"2\">F</td><td>(Moment) dy y dF y</td><td>dy</td><td>(Environment Mismatch) (Background Noise)</td></tr><tr><td/><td/><td/><td/><td colspan=\"3\">y</td><td colspan=\"2\">p</td><td colspan=\"2\">Train</td><td colspan=\"4\">(Channel Effect) dy y x F y</td><td>(Speech Robustness)</td></tr><tr><td/><td/><td/><td/><td colspan=\"2\">C</td><td colspan=\"4\">Train</td><td>y</td><td/><td/><td/><td>[8]</td><td>[9]</td></tr><tr><td colspan=\"14\">(Histogram Equalization)</td><td>[10]</td><td>(Log Energy)</td></tr><tr><td/><td/><td/><td/><td/><td/><td/><td/><td/><td/><td colspan=\"5\">(Mel Filter-Bank)</td><td>(1)</td><td>(Additive Noise) (2) (Mel-Frequency Cepstral</td></tr><tr><td colspan=\"14\">(Convolutional Noise) Coefficient)</td><td>(Test</td></tr><tr><td colspan=\"8\">(Linearly Additive) Speech)</td><td/><td/><td/><td/><td colspan=\"3\">(Cumulative Density Function, CDF)</td><td>(Training Speech)</td></tr><tr><td/><td/><td/><td/><td/><td/><td/><td/><td/><td/><td/><td colspan=\"4\">(Reference Distribution)</td></tr><tr><td/><td/><td/><td/><td/><td/><td/><td/><td/><td/><td/><td/><td/><td/><td>2 3 4</td></tr></table>", | |
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| "html": null, | |
| "text": "69308027@cc.ntnu.edu.tw, ymyeh@ice.ntnu.edu.tw, berlin@csie.ntnu.edu.tw", | |
| "num": null | |
| }, | |
| "TABREF1": { | |
| "content": "<table><tr><td/><td>Lookup)</td><td>(Table Look-Up based</td></tr><tr><td colspan=\"2\">Histogram Equalization, THEQ)</td></tr><tr><td>2.2</td><td colspan=\"2\">(Quantile-based Histogram equalization, QHEQ)</td></tr><tr><td/><td>(Nonparametric)</td></tr><tr><td/><td/><td>[19][20]</td></tr></table>", | |
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