658 research outputs found
DNN-Based Multi-Frame MVDR Filtering for Single-Microphone Speech Enhancement
Multi-frame approaches for single-microphone speech enhancement, e.g., the
multi-frame minimum-variance-distortionless-response (MVDR) filter, are able to
exploit speech correlations across neighboring time frames. In contrast to
single-frame approaches such as the Wiener gain, it has been shown that
multi-frame approaches achieve a substantial noise reduction with hardly any
speech distortion, provided that an accurate estimate of the correlation
matrices and especially the speech interframe correlation vector is available.
Typical estimation procedures of the correlation matrices and the speech
interframe correlation (IFC) vector require an estimate of the speech presence
probability (SPP) in each time-frequency bin. In this paper, we propose to use
a bi-directional long short-term memory deep neural network (DNN) to estimate a
speech mask and a noise mask for each time-frequency bin, using which two
different SPP estimates are derived. Aiming at achieving a robust performance,
the DNN is trained for various noise types and signal-to-noise ratios.
Experimental results show that the multi-frame MVDR in combination with the
proposed data-driven SPP estimator yields an increased speech quality compared
to a state-of-the-art model-based estimator
Scientific Advancements
The American Association for the Advancement of Science — the world\u27s largest scientific society — recently named four Kansas State University faculty members as fellows.
Entomology department ranks No. 8 in natio
Das Verborgene sehen und die „Anatomie des Heils“ : Einblicke in die Leiber Mariens und Elisabeths oder: Kindslagenbilder der besonderen Art
12th February 1943. Terrain study, copy no. 650. Handwritten note in original item stating maps 1-3 are missin
APPLICATION OF MICROSATELLITE MARKERS IN IDENTIFICATION AND PARENTAGE ASSIGNMENT OF SHEEP
The accuracy of the parentage reference is the early step of information needed for genotyping study.Inaccurate data of recording sheep numbers is often occurred. Sometimes, we found sheep or lambs with uncertain original parents. This study was designed to identify the parentages of sheep and to find the putative parents of lambs. Using an advance DNA technology in molecular genetics particularly in genotyping study, those purposes can be clarified. DNA of sheep were isolated from fresh blood samples in EDTA using a high salt method. A concentration of 50ng/(il DNA was used for amplification. Several microsatellite markers were applied in the amplification. Using a DNA analyser and sequencer, PCR products were analysed to look at the figures of alleles (bands). Results showed that using microsatellite markers could inform that parents of several experimental lambs were incorrect. It was found that putative parents of some lambs were generated from incorrect parents. This study suggests that microsatellite marker can be used to clarify unknown original parents
Built to Work
How the Electronics Design Laboratory moves ideas by researchers and entrepreneurs into the marketplac
Final Transmission
Plant pathologists work to stop plant diseases and the insects that spread the
Professor’s work a patented success
In the 16 years Xiuzhi “Susan” Sun has been at Kansas State University, she’s made a patent-worthy discovery nearly every year
Great Grains
A cross-disciplinary team is developing a nutritious, sorghum-based porridge for impoverished children in Tanzania
A Matter of Perspective
Three doctoral students look to new methods and technologies to improve health
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