Search for dissertations about: "Echo control"
Showing result 1 - 5 of 27 swedish dissertations containing the words Echo control.
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1. Parameter and State Estimation with Information-rich Signals
Abstract : The complexity of industrial systems and the mathematical models to describe them increases. In many cases, point sensors are no longer sufficient to provide controllers and monitoring instruments with the information necessary for operation. The need for other types of information, such as audio and video, has grown. READ MORE
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2. Parameter and state estimation using audio and video signals
Abstract : The complexity of industrial systems and the mathematical models to describe them increases. In many cases point sensors are no longer sufficient to provide controllers and monitoring instruments with the information necessary for operation. The need for other types of information, such as audio and video, has grown. READ MORE
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3. Speech Signal Extraction : A Multichannel Approach
Abstract : In speech signal extraction the aim is to extract human speech in a physical environment by using microphones. In any real world environment there are many disturbance sources that cause unwanted sound pressure, which in turn may degrade the comprehension of the speech at the microphones. READ MORE
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4. Susceptibility effects in MRI and 1H MRS. The spurious echo artifact and susceptibility measurements
Abstract : When performing magnetic resonance (MR) experiments, a strong homogeneous magnetic field is often preferred, especially in clinical applications. However, all objects that are placed in the magnetic field will disturb the field homogeneity and cause local magnetic field gradients. READ MORE
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5. Low-Complexity Algorithms for Echo Cancellation in Audio Conferencing Systems
Abstract : Ever since the birth of the telephony system, the problem with echoes, arising from impedance mismatch in 2/4-wire hybrids, or acoustic echoes where a loudspeaker signal is picked up by a closely located microphone, has been ever present. The removal of these echoes is crucial in order to achieve an acceptable audio quality for conversation. READ MORE