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Acoustic Signal Pickup and Processing Using B Format Technology
Wiesner, Jakub ; Vlach, Jan (referee) ; Schimmel, Jiří (advisor)
The work is aimed to proposal of system for acoustic signal pickuping, software processing and conversion into signals for surround sound systems. The work describes sound sensation by human auditory organ and associated effects of binaural hearing and multichannel stereo and surround sound systems. Next aim of the work is to describe ambisonics, surround sound and formats for surround sound pickuping, transmission, processing a decoding. An ending part introduces problems of surround sound pickuping by using of SoundField technology and output signals decoding process of this technology into signals of other surround sound systems.
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Sound source panning in non-standard speaker topologies
Doležel, Roman ; Balík, Miroslav (referee) ; Orlovský, Kristián (advisor)
This work is aimed to sound source panning in two-dimensional space. The first part describes sound sensation by human auditory organ and spatial hearing. Next aim of the work is to describe commonly used panning methods VBAP and Ambisonics and newly introduced method DBAP, which is the main subject of this work. All methods are explained based on theoretical information. The third part of the work deals with knowledge of the amplitude method DBAP obtained by simulation in Matlab for various speakers topologies. The last section is focused on listening tests for comparison of methods DBAP and VBAP.
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Modeling of Binaural Hearing.
Tóth, Peter ; Maršálek, Petr (advisor) ; Košťál, Lubomír (referee) ; Hromádka, Tomáš (referee)
The central theme of this thesis is a description of information processing in the sound localization circuit of the auditory pathway. The focus is on principal neurons of the medial superior olive (MSO), the first major convergence point for binaural information. Selected properties and relations of MSO neurons are derived and expressed through models. In the thesis we present three modeling studies. The first one clarifies a relation- ship between biophysical parameters of the MSO neuron and its ability to detect coincidental spikes from the left and the right ear. The second study describes the statistical behavior of spike trains on the input and output of the MSO neuron. In the third work, we studied how interaural coherence could guide localization of sound sources in complex listening situations with multiple sound sources in reverberant environments. The main results are analytical and numerical models describing the aforemen- tioned relations and behaviors. Secondary results include that inhibitory input to the MSO neuron narrows and shifts the time range of coincidence detection, that ergodic assumption from statistical physics and circular statistics are beneficial in the description of spike trains in the auditory pathway, and that interaural level difference of parts of the signal with...
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Sound source panning in non-standard speaker topologies
Doležel, Roman ; Balík, Miroslav (referee) ; Orlovský, Kristián (advisor)
This work is aimed to sound source panning in two-dimensional space. The first part describes sound sensation by human auditory organ and spatial hearing. Next aim of the work is to describe commonly used panning methods VBAP and Ambisonics and newly introduced method DBAP, which is the main subject of this work. All methods are explained based on theoretical information. The third part of the work deals with knowledge of the amplitude method DBAP obtained by simulation in Matlab for various speakers topologies. The last section is focused on listening tests for comparison of methods DBAP and VBAP.
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Acoustic Signal Pickup and Processing Using B Format Technology
Wiesner, Jakub ; Vlach, Jan (referee) ; Schimmel, Jiří (advisor)
The work is aimed to proposal of system for acoustic signal pickuping, software processing and conversion into signals for surround sound systems. The work describes sound sensation by human auditory organ and associated effects of binaural hearing and multichannel stereo and surround sound systems. Next aim of the work is to describe ambisonics, surround sound and formats for surround sound pickuping, transmission, processing a decoding. An ending part introduces problems of surround sound pickuping by using of SoundField technology and output signals decoding process of this technology into signals of other surround sound systems.
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