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 20 for “"Auditory scene analysis"”.
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Prediction-driven computational auditory scene analysis
… distinct events in a human listener--the 'auditory scene analysis' of the acoustic information. Recent advances in the understanding of this process from experimental psychoacoustics have led to several efforts to build a computer model capable of the same function. This work is known as …
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Prediction-driven computational auditory scene analysis
Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 1996.
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The role of texture in auditory scene analysis
Everyday auditory scenes contain sounds from many sources. For example, when crossing the street, you might hear sounds produced from the rumble of passing cars, the chatter of pedestrians, and the rapid tick of crosswalk signals. To make sense of this complex mixture of sounds, the auditory system …
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Localization and separation of concurrent talkers based on principles of auditory scene analysis and multi-dimensional statistical methods
… approach allows to analyze acoustical scenes at low SNR, showing that the described strategies might help to interpret auditory processing.
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Listening with generative models
… hear. First, I present a hierarchical Bayesian auditory scene synthesis model to address the perceptual organization of sound into sources and events. We aimed to bridge between classical auditory scene analysis phenomena and everyday sounds, asking whether common generative principles could …
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Sound-source recognition : a theory and computational model
… of sound-source recognition to the process of auditory scene analysis has largely been neglected by researchers building computational models of the scene analysis process. This thesis proposes a theory of sound-source recognition, casting recognition as a process of gathering information to …
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Neural representations of pitch : role of peripheral frequency selectivity
… speaker identity. Pitch plays a major role in auditory scene analysis: differences in pitch are a major cue for sound source segregation, while frequency components that share a common fundamental frequency (FO) tend to be grouped into a single auditory object. In psychophysics, a positive …
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Redundancy reduction for computational audition, a unifying approach
… approach. Our experiments focus on three major auditory functions, preprocessing, grouping and scene analysis. For auditory preprocessing, we prove that it is possible to evolve cochlear-like filters by adaptation to natural sounds. Following that and using the same principles as in …
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Pitch representations in the auditory nerve : two concurrent complex tones
… concurrent sounds are important cues used in auditory scene analysis and also play a major role in music perception. To investigate the neural codes underlying these perceptual abilities, we recorded from single fibers in the cat auditory nerve in response to two concurrent harmonic complex …
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Influence of spatial cues on the identification and the localization of objects in the auditory foreground
The ability to form auditory objects is important in the natural environment where sounds arriving at our ears are a resultant of all spectro-temporal components that may have arisen from different auditory events. It has been shown that auditory spatial cues are effective for grouping acoustical …
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Noise Robust Pitch Tracking by Subband Autocorrelation Classification
… one of the elementary tasks of the Computational Auditory Scene Analysis (CASA). While a human can easily listen to the voiced pitch in highly noisy recordings, the performance of automatic speech pitch tracking degrades in unknown noisy audio conditions. Traditional pitch trackers use either …
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Music-listening systems
… proven very difficult to build computer music-analysis tools with similar capabilities. This dissertation examines the psychoacoustic origins of the early stages of music listening in humans, using both experimental and computer-modeling approaches. The results of this research enable the …
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Computational auditory saliency
… be on investigating the role of saliency in the auditory attentional process. In order to identify these salient sounds, we have developed a computational auditory saliency model inspired by our understanding of the human auditory system and auditory perception. By identifying salient sounds we …
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High-resolution sinusoidal analysis for resolving harmonic collisions in music audio signal processing
… collided harmonics. The capabilities of this analysis method are also explored in the context of music signal processing applications. Potential benefits of high-resolution sinusoidal analysis are examined in experiments involving multiple fundamental frequency estimation and audio source …
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Speech Enhancement Methods Based on CASA Incorporating Spectral Correlation
Computational auditory scene analysis (CASA) has shown a great potential for speech enhancement compared to some statistical model-based methods. A challenge for CASA is how to estimate binary mask or ratio mask effectively in each time-frequency (T-F) unit. In this thesis, four speech enhancement …
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Processing of harmonicity, onset, and spatial cues in complex acoustic environments
Harmonizität, Stimulusbeginn und Raumrichtungsinformationen gehören zu den wichtigsten Schallmerkmalen, um simultan auftretende Frequenzen in Hörobjekte zu gruppieren. Da in natürlichen akustischen Reizen mehr als nur ein Merkmal für die Gruppierung oder Trennung von Frequenzkomponenten vorhanden …
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Effects of Hearing Experience, Music Training and Spectral-Temporal Processing on Music and Speech Perception in Adult Cochlear Implant Users
… simulated piano tone stimuli. Exploratory factor analysis was used to reduce the data fields to a series of meaningful constructs; five latent variables and a direct measurement were derived (through the combination of associated variables). These were: ‘duration of hearing difficulties’, ‘age …
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Ψηφιακή επεξεργασία και αυτόματη κατηγοριοποίηση περιβαλλοντικών ήχων
Στο κεφάλαιο 1 παρουσιάζεται μία γενική επισκόπηση της αυτόματης αναγνώρισης γενικευμένων ακουστικών γεγονότων. Επιπλέον συζητάμε τις εφαρμογές της τεχνολογίας αναγνώρισης ακουστικού σήματος και δίνουμε μία σύντομη περιγραφή του state of the art. Τέλος, αναφέρουμε τη συνεισφορά της διατριβής. Στο …