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 20 of 63 for “"SOUND SOURCES"”.
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A binaural sound sources localisation application for smart phones
The ability to estimate positions of sound sources is one that gives animals a 360° awareness of their acoustic environment. This helps compliment the visual scene which is restricted to 180° in humans. Unfortunately, deaf people are left out on this ability. Smart phones are rapidly becoming a …
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Adjoint-based monopole synthesis of sound sources with complex directivities
… acoustics. The accurate modeling of directive sound sources is a prerequisite for acoustical simulations. In contrast to frequency domain methods, the directivity pattern of sound sources cannot be analytically implemented in the time domain directly. The sound sources are rather approximated …
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NOISE MEASUREMENTS AND EVALUATION OF SOUND SOURCES OF ROAD VEHICLES
… urban experiences worldwide It reviews noise sources, effects, mitigation strategies, and compares ICE (Volkswagen SUV) and EV (Renault) noise at 10, 30, 50 km/h via SoundCam 2.0 acoustic imaging on a quiet road.
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A Frequency Domain Beamforming Method to Locate Moving Sound Sources
… to de-Dopplerize microphone signals from moving sources of sound is derived. Currently available time domain de-Dopplerization techniques require oversampling and interpolation of the microphone time data. In contrast, the technique presented in this dissertation performs the de-Dopplerization …
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Reflections of a fool a modern ballet derived from electronic sound sources
Title from accompanying document.
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Reflections of a fool a modern ballet derived from electronic sound sources
Title from accompanying document.
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Relative distance perception of sound sources in critical listening environment via binaural reproduction
… the perception of the relative distance between sound sources in a virtual medium sized critical listening room. The virtual sources were generated by convolving a dry speech signal with modelled and measured BRIRs. The BRIRs were modelled using a direction related image source model for the …
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The effect of towed array orientation on the 3D acoustic picture for sound sources and the vertical ambient noise profile
… environment. For example, the anthropomorphic sound of the ice cracking along the ice edge could be used to track the location of the ice edge as it advances and retracts throughout the seasons. The noise sources could also be used as a noise source to acoustically map the bathymetry of the …
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Room reconstruction and navigation using acoustically obtained room impulse responses and a mobile robot platform
… processing aspect to determine the location of a sound source or multiple sound sources. We apply similar algorithms to localize what are known as virtual sound sources. Virtual sound sources are created when sound from a sound source reflects off of a surface, such as a wall or object, and are …
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The Neuronal Basis of Signal Detection in the Presence of Spatially Separated Noise: A Study in the Frog Inferior Colliculus
… when the angular separation between the two sound sources is increased. Signal detection threshold is highest when the two sound sources are colocalized in space. Although this phenomenon has been known for many years, and has recently been confirmed in other vertebrates, the response of …
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Helmholtz Equation Least Squares Based Near-Field Acoustic Holography With Laser
… uses acoustic pressure as input to reconstruct sound field quantities, while this modified HELS based NAH with laser utilizes the normal surface velocities measured by LDV to reconstruct the acoustic quantities at interested positions. Theoretical principles of the HELS based NAH with laser have …
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Sound-source recognition : a theory and computational model
… objects in the environment from only the sounds they produce is extraordinarily robust with regard to characteristics of the acoustic environment and of other competing sound sources. In contrast, computer systems designed to recognize sound sources function precariously, breaking down …
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Locating and extracting acoustic and neural signals
… extracting, and separating multiple incoherent sound sources in three-dimensional (3D) space; and applications of the time reversal (TR) algorithm to pinpoint the hyper active neural activities inside the brain auditory structure that are correlated to the tinnitus pathology. Specifically, an …
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Numerical techniques for computational aeroacoustics
… is based on direct numerical simulation of the sound field. In the region of sound generation, the unsteady airflow is computed separately from the sound using Computational Fluid Dynamics (CFD) codes. Overlapping this region and extending further away is the acoustic domain where the linearised …
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Determining Whether Position Specification of the Relevant Component Within a Cue Is Necessary for Cue Effectiveness.
… of a simple stimulus were investigated. Although sound sources in the environment rarely generate simple waveforms, the research was relevant in establishing the foundation on which current auditory research of complex tones is based. The auditory system functions in a natural environment where a …
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Structure-borne sound transmission within electric power steering systems
… todetermine the contributions of structure-borne sound sources to receiver responses at target positions.The classical TPA approach is based on contact forces at the interface between sourceand receiver to characterise the dynamic loads induced by the source and frequency responsefunctions (FRFs) …
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Non-Line-of-Sight localisation of a sound source
… uses multiple on-ground microphones to locate a sound source. The proposed technique approximately estimates and corrects the NLoS errors based on an initial guess of the sound source position and a map. The localisation is then achieved by iteratively correcting the ToAs and updating the sound …
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Factors influencing acoustical localization
… by the auditory system to localize acoustical sound sources. At first, a measurement setup (TASP-System) is presented and validated in this theesis, that is capable of measuring HRTFs with a high spatial resolution and that can also be used for psychacoustic localization measurements. The …
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Binaural Hearing Effects of Mapping Microphone Array's Responses to a Listener's Head-Related Transfer Functions
… enough spatial information to precisely localize sound sources. To correct this, a preprocessor control algorithm was added to the HRTF matching, a ‘binaural HRTF matching’ process. The binaural HRTF matching increased the listeners’ performance in perceiving the location of a sound source. With …
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