Search for dissertations about: "Spectral subtraction"

Showing result 1 - 5 of 6 swedish dissertations containing the words Spectral subtraction.

  2. 1. Speech enhancement for mobile communications

    Author : Harald Gustafsson; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Speech enhancement; Spectral subtraction; Dual-microphone spectral subtraction;

    Abstract : .... READ MORE

  4. 2. Speech enhancement for mobile communications

    Author : Harald Gustafsson; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; speech enhancement; spectral subtraction;

    Abstract : Three major applications of speech enhancement have been studied: noise reduction for mobile telephone handsfree accessories, noise reduction for handheld mobile telephones, and short delay noise reduction for frame-less telephone systems. During conversation, both hearing and speaking adapt to the background noise in a noisy environment. READ MORE

  5. 3. Clinical fluorescence cytometry : improvements to preparation methods and instrumentation

    Author : Thomas Heiden; Karolinska Institutet; Karolinska Institutet; []
    Keywords : Fluorescence analysis; flow cytometry; image cytometry; DNA ploidy; proliferation; apoptosis; paraffin-embedded tissues; fresh tissues; S-phase fraction; debris; aggregates; spectral overlap; wavelength switching;

    Abstract : Fluorescence cytometry, which can be carried out by flow or image cytometry (FCM, ICM), provides a highly sensitive and specific tool for quantitative analysis of cell material. It is emerging from being a pure research method and becoming an important adjunct to clinical practice. To better realize its potential, more research is needed. READ MORE

  6. 4. Noise and Vibration Control of Combustion Engine Vehicles

    Author : Mathias Winberg; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY;

    Abstract : Noise and vibrations have over the last two decades been regarded as significant environmental health problems. Regulations regarding acoustic as well as vibration levels have therefore become more stringent. READ MORE

  7. 5. Signal Characterization of Atrial Arrhythmias using the Surface ECG

    Author : Martin Stridh; Institutionen för elektro- och informationsteknik; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Signalbehandling; Signal processing; Atrial fibrillation; Atrial arrhythmias; Frequency estimation; Time-frequency analysis; QRST cancellation; ECG;

    Abstract : This doctoral thesis is comprised of five parts which deal with different signal processing problems in ECG-based characterization of atrial arrhythmias. Such characterization requires that the ventricular activity has first been cancelled in the ECG. READ MORE