Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 13 of 13 for “"Head related transfer function"”.
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Characterization of the head-related transfer function using chirp and maximum length sequence excitation signals
… signals are used to obtain measurements of the head-related transfer function (HRTF) for the Knowles electronic manikin for acoustic research (KEMAR), resulting in remarkably low relative error between the two measurement methods. Due to the low relative error, it is asserted that applying both …
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Improving the spatial acoustic experience through calibration
… scene, it is necessary to measure each user’s head-related transfer function (HRTF), which is a challenging and tedious process. We explore methods to improve the spatial acoustic experience in the absence of personalized HRTFs. We present a system composed of a calibration process and an …
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Binaural Hearing Effects of Mapping Microphone Array's Responses to a Listener's Head-Related Transfer Functions
… match the characteristics of a human subject’s Head-Related Transfer Function (HRTF). The mapping of the response is first explored with a ‘monaural HRTF matching’ that filters the response independent of the arrival angles. For arbitrary array geometry with the listener external to the …
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Capturing spatial audio from arbitrary microphone arrays for binaural reproduction
… from an arbitrary array for reproduction via headphones or binaural cross-talk cancellation. A technique for designing filters that minimize the reconstruction error of the soundfield captured at the array relative to the head related transfer function is described. Our techniques are compared …
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Gradient descent based adaptive IIR filtering with direct and lattice form filter structures; applied to estimation of a headphone compensation filter and binaural head related transfer functions
… applications like portable AR/VR headsets. With advances in computational methods, optimising IIR filters has become straightforward, making it important to compare their performance against traditional FIR filters. This thesis investigates adaptive IIR filtering algorithms using …
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From children to adults: How binaural cues and ear canal impedances grow
In this thesis the growth-dependency of head-related transfer functions and their resulting parameters (interaural time and level differences) are analyzed as well as ear canal impedances. Custom-designed measurements for children were developed which made it possible to obtain anthropometric data …
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Manatee Sound Localization: Performance Abilities, Interaural Level Cues, and Usage of Auditory Evoked Potential Techniques to Determine Sound Conduction Pathways
… when signals originated from the front 180°. Head/body related transfer functions determined how different frequencies were filtered by the manatees' head/torso to create frequency-specific interaural level differences (ILDs). Hydrophones were suspended next to each manatee ear and Fast …
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Applied Sampling and Reconstruction of Signals on the Sphere
… applications of measuring and reconstructing the head-related transfer function (HRTF) in acoustics and the diffusion signal in diffusion magnetic resonance imaging (dMRI). In contrast to existing sampling schemes in the literature, the developed schemes attain the optimal number of samples, equal …
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Applied Sampling and Reconstruction of Signals on the Sphere
… applications of measuring and reconstructing the head-related transfer function (HRTF) in acoustics and the diffusion signal in diffusion magnetic resonance imaging (dMRI). In contrast to existing sampling schemes in the literature, the developed schemes attain the optimal number of samples, equal …
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Development and application of an echolocation model inspired by bats
… signals. Secondly, the effect of the bat’s head on the received signals at the two<br/>ears for varying distances was investigated by measuring the head-related transfer function<br/>(HRTF) of a bat-head cast. It has been reported that a bat changes bandwidth<br/>and duration of its …
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Behavioral responses to frequency specific head related transfer functions as filtered by the facial ruff in the Barn owl (Tyto alba)
… ambiguities. Although the diotic stimulation via headphones allows to introduce and manipulate ITDs and ILDs independently, it does not reflect the monaural frequency characteristics that are usually present in free-field stimuli. This problem can be overcome when sound stimuli are filtered by the …
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Réalisation d’un système de substitution sensorielle de la vision vers l’audition
Ce projet de recherche a été mené dans le cadre du groupe de recherche NECOTIS (Neurosciences Computationnelles et Traitement Intelligent du Signal). Ce groupe de recherche agit principalement dans le domaine du traitement de l’image et de l’audio grâce à des méthodes de traitement de signal …
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CUSTOMIZING IMMERSIVE SPATIAL AUDIO: FROM INDIVIDUALIZED BINAURAL RENDERING TO REAL-VIRTUAL ACOUSTIC BLENDING
… le funzioni di trasferimento legate alla testa (head-related transfer functions, HRTF) in base ai parametri antropometrici del padiglione auricolare. La tesi presenta anche nuovi parametri del padiglione auricolare per caratterizzarne più in dettaglio l'anatomia, migliorando così …