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.
Results
Showing 1 to 20 of 26 for “"natural sounds"”.
-
Efficient coding of natural sounds
Es werden Methoden für eine effiziente Kodierung natürlicher Töne vorgeschlagen, die auf dem Konzept der "spärlichen Kodierung" basieren, ein Hauptmechanismus in der neurosensorischen Informationsverarbeitung. Eine verbesserte Audioqualität, insbesondere bei niedrigen Bitraten, wurde in dem …
-
Optimality of human acoustic perception of natural sounds, and violin acoustics elucidated with a non-corporeal musical instrument made by fully air-coupled finite-element-modeling of the Titian Stradivarius
… the stimulus. From hundreds of measurements of naturally scintillating environmental sound signals, Weber's law is found to be a consequence of attaining the minimum mean-square error, known as the Cramer-Rao lower bound, and maximum Fisher information in intensity estimation. Remarkably, …
-
Park Visitors and the Natural Soundscape: Winter Experience Dimensions in Yellowstone National Park
<P>The natural soundscape is becoming increasingly recognized as a threatened park resource. A variety of policies, laws, and regulations have rapidly been established that affect the National Park Service mandate and require the agency and individual parks to protect, preserve, and restore natural …
-
Park Visitors and the Natural Soundscape: Winter Experience Dimensions in Yellowstone National Park
<P>The natural soundscape is becoming increasingly recognized as a threatened park resource. A variety of policies, laws, and regulations have rapidly been established that affect the National Park Service mandate and require the agency and individual parks to protect, preserve, and restore natural …
-
Perceptual synthesis engine : an audio-driven timbre generator
… the modeling sequence including the analysis of natural sounds, the inference step that finds the mapping between control and output parameters, the timbre prediction step, and the sound synthesis. The system enables applications such as cross-synthesis, pitch shifting or compression of acoustic …
-
Modeling and Evaluating Human Sound Localization in the Natural Environment
Humans locate sounds in their environment to avoid danger and identify objects of interest. In a ten-minute bike ride, a person might take note of a car approaching from behind, a tree where a bird is singing, and pedestrians walking from around a blind corner. Research on human sound localization …
-
Unsupervised learning to quantify differences in song learning of experimental zebra finch populations
… a method previously used to analyze other natural sounds, is applied to zebra finch song here. The results of feature extraction were used to develop metrics that were applied to zebra finch song from across both normal and isolate development. As expected, adult control song was …
-
An extensible Web tool for the collection, sharing, and annotation of audio documents
… them. Motivated by a need to collect and annote natural sounds, this thesis proposes a web-based audio annotation system and describes its design and implementation. Users upload audio using a browser or via cell phone stream, and add timed annotations in the form of comments, tags, or metadata. …
-
Learning Audio-Video Language Representations
… model that learns from the English narration naturally present in instructional videos to relate spoken words and sounds to visual content. Our model can recognize spoken words and natural sounds in audio queries to retrieve relevant visual clips, supporting its application to video search …
-
Nonlinear Representation of Auditory Stimuli Across the Auditory Cortex
… of these responses. Unlike pure tones, natural sounds possess complex spectro-temporal structures across frequencies. How simple tuning properties scale across ensembles of neurons to represent more complex sensory environments is still a question of active investigation and debate. To …
-
Redundancy reduction for computational audition, a unifying approach
… to evolve cochlear-like filters by adaptation to natural sounds. Following that and using the same principles as in preprocessing, we present a treatment that collapses the heuristic set of the gestalt auditory grouping rules, down to one efficient and formal rule. We successfully apply the same …
-
Signal detection in the auditory midbrain : neural correlated and mechanisms of spatial release from masking
… is especially important because most natural sounds, including speech, have pronounced envelope fluctuations that
-
Electroacoustic Composition
… both environmental and digitally processed sounds were studied. This was accomplished by practical means, resulting in a folio of creative work. Compositional methods and techniques relating to the interaction between environmental and processed sounds are detailed in this written …
-
Sacred sounds and natural grounds: designing acoustic communities within Prairie Style and Organic architectural spaces
… discourse of the sacralization of space and the naturalization of sound. This work shows that architects fostered musical interests, participated in debates on the effects of urban noise, and even composed their own music. It considers the agency of these architects as “acoustic designers.” My …
-
Sensor network localization based on natural phenomena
… by analyzing sound and light sensory data from naturally occurring background phenomena as well as synthesized emulations of background transients. Our approach has two main phases: passive and active. The system enters an active mode when, its sensed region stays relatively silent and stable, …
-
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 …
-
Informing the next generation of auditory midbrain implants, neuronal population dynamics in the auditory cortex and midbrain, and the potentials of optogenetic stimulation
… to optimise stimulation to mimic the area's natural inputs and achieve useful sound perception. Additionally, electrode based devices afford poor spatial resolution, which optogenetics may solve. Simultaneous silicon probe recordings were performed in the inferior colliculus (IC) and auditory …
-
Hierarchy and invariance in auditory cortical computation
… invariance, we correlate voxel responses to natural sounds with and without real-world background noise. Non-primary responses are substantially more noise-invariant than primary responses. These results illustrate a representational consequence of the potential hierarchical organization of …
-
Effect of dynamic range compression on attending to sounds based on spatial location
… cue for spatial perception and attending to sounds in an acoustic mixture. Moreover, natural sounds produce complicated interactions between different sounds in a mixture, as a compressor's gain is driven by whichever source dominates the mixture within a specified temporal window. While …
-
Exploring Detracting Elements and Coping Mechanisms Reported in Four Trails along the Going-To-The-Sun Road Corridor in Glacier National Park
… common detracting element (48%), followed by non-natural sounds (42%) and overflights (32%). For hikers experiencing detracting elements, 80% would usually use a coping mechanism to reduce the negative effect of that kind of detractor. Hikers sampled employed different cognitive coping mechanisms. …
Page 1 of 2