Sciweavers

5903 search results - page 226 / 1181
» Signal Processing
Sort
View
ICASSP
2008
IEEE
16 years 1 months ago
A novel a priori SNR estimation approach based on selective cepstro-temporal smoothing
While state-of-the-art approaches obtain an estimate of the a priori SNR by adaptively smoothing its maximum likelihood estimate in the frequency domain, we selectively smooth the...
Colin Breithaupt, Timo Gerkmann, Rainer Martin
ICASSP
2011
IEEE
14 years 10 months ago
Non-stationary feature extraction for automatic speech recognition
In current speech recognition systems mainly Short-Time Fourier Transform based features like MFCC are applied. Dropping the short-time stationarity assumption of the voiced speec...
Zoltán Tüske, Pavel Golik, Ralf Schl&u...
ICIP
1994
IEEE
16 years 8 months ago
Wavelet Soft-Thresholding of Time-Frequency Representations
The high noise sensitivity of the Wigner distribution makes smoothing a necessity for producing readable time-frequency images of noise corrupted signals. Since h e a r smoothing ...
Richard G. Baraniuk
ICASSP
2009
IEEE
16 years 1 months ago
Novel schemes for nonlinear acoustic echo cancellation based on filter combinations
Nonlinear acoustic echo cancellers (NLAEC) are becoming increasingly important in hands-free applications. However, in some situations, an NLAEC is inferior to a linear AEC, espec...
Luis Antonio Azpicueta-Ruiz, Marcus Zeller, Jer&oa...
ICASSP
2009
IEEE
16 years 1 months ago
Mutual information based channel selection for speaker diarization of meetings data
In the meeting case scenario, audio is often recorded using Multiple Distance Microphones (MDM) in a non-intrusive manner. Typically a beamforming is performed in order to obtain ...
Deepu Vijayasenan, Fabio Valente, Hervé Bou...