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

Tracking a Silent Killer

A genetics race to protect America’s food supply and economy

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