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 56 for “"Acoustic cues"”.
-
Processing Methods for the Detection of Landmark Acoustic Cues
… which is based on the concept of individual acoustic cues in the speech signal such as Landmarks, which are abrupt changes in the spectrum due to articulatory events associated with vowels and consonants. It provides an organized process that can easily be repeated and modified to be able to …
-
Automatic Detection of Landmark Acoustic Cues in Human Speech
… the automatic detection of the eight landmark acoustic cues in human speech. Landmarks are key articulatory events, produced as a result of minimal vocal tract constriction (e.g., vowels and glides) or closures and releases in the oral region (e.g., nasal, fricative, and stop consonants). A …
-
Analysis of acoustic cues for identifying consonant /ð/ in continuous speech
Thesis (M.Eng.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 2002.
-
Acoustic cues for the perception of the information status of words in speech
… to information structure is not evoked from acoustic cues alone. In the second experiment, naturally produced utterances were resynthesized in pitch, duration, and intensity to examine the individual contribution of each acoustic cue to the perception of two information structure categories: …
-
An investigation of the roles of geomagnetic and acoustic cues in whale navigation and orientation
… a first look at the roles of geomagnetic and acoustic cues in humpback whale navigation and orientation, in addition to documenting some effects of human-produced sound on beaked whales. The tracks of satellite-tagged humpback whales migrating from Hawaii to Alaska were found to have …
-
Design of tool for analysis of speech development disorders using landmarks and other acoustic cues
… we compared the modification of predicted acoustic cues to distinctive features of manner, place and voicing for just under 30 children (ages 5-12), for the CN-Rep word inventory, in an extension of the earlier analysis in Levy et al. 2014. Feature cues, including abrupt acoustic landmarks …
-
An investigation of the roles of geomagnetic and acoustic cues in whale navigation and orientation
… a first look at the roles of geomagnetic and acoustic cues in humpback whale navigation and orientation, in addition to documenting some effects of human-produced sound on beaked whales. The tracks of satellite-tagged humpback whales migrating from Hawaii to Alaska were found to have …
-
Call timing interactions, aggressive behavior, and the role of acoustic cues in chorus formation in treefrogs
… and aggressive calls. I also studied the role of acoustic signals on chorus formation and location and found that males may benefit from settling next to attractive males and that calls influences the behavior of males by attracting individuals to the established chorusing area, and to new areas …
-
Licensing stop place before laterals : a study of acoustic cues relevant to the perception of stop-lateral sequences
… of TL-KL contrasts is argued to occur because acoustic cues for coronal and velar stop place are insufficiently distinct in prelateral contexts (Flemming 2002, 2007; Bradley 2006). In this dissertation I address the question of which perceptual dimensions are indistinct for surface contrasts of …
-
Detection of consonant voicing : a module for a hierarchical speech recognition system
… employs various component modules to detect acoustic cues in the signal. These acoustic cues are used to infer values of features that describe segments. Features are considered to be arranged in a hierarchical structure, where those describing the manner of production are placed at a higher …
-
Speech Perception in “Bubble” Noise: Korean Fricatives and Affricates By Native and Non-native Korean Listeners
<p>The current study examines acoustic cues used by second language learners of Korean to discriminate between Korean fricatives and affricates in noise and how these cues relate to those used by native Korean listeners. Stimuli consist of naturally-spoken consonant-vowel-consonant-vowel (CVCV) …
-
Prosodic prominence in English
… words. The perceptual salience is signaled by acoustic cues. Prominent words are higher, longer, or louder than nonprominent words in English. Perceptual prominence is associated with meaning of a word in discourse context. Prominent words are usually new or contrastive information, while …
-
The impact of head and body postures on the acoustic speech signal
… of postural changes within speakers on the acoustic speech signal to complement research on articulatory changes under the same conditions. The research is therefore relevant for forensic phonetics, where quantifying within-speaker variation is vital for the accuracy of speaker comparison. …
-
Investigating the ecological role of sound on coral reefs
Acoustic environments (soundscapes) are increasingly being recognized for their ecological relevance to marine life. Larval stages of many species use acoustic cues to optimize their choice of settlement habitat. Coral reefs feature particularly complex natural soundscapes, yet little is known …
-
Characterization of acoustic head-related transfer functions for nearby sources
… subjects and the Knowles Electronics Manikin for Acoustic Research (KEMAR). The HRTFs were measured in several reverberant room conditions for sound source positions at 0, 45, and 90 degrees in azimuth and 15cm and 1m from the center of the head using maximum-length sequences. The effects of …
-
Communication error detection using facial expressions
… in conversational systems typically rely only on acoustic cues. However, perceptual studies have indicated that speakers do exhibit visual communication error cues passively during the system's conversational turn. In this thesis, we introduce novel algorithms for face and body gesture recognition …
-
The role of social environment in shaping vocal communication systems in wild songbirds
… predator avoidance. In my dissertation, I study acoustic communication in a wild population of blue tits and great tits in order to investigate the effects of social environment on birds’ responses to acoustic cues as well as their production of acoustic signals. In Chapter 1, I demonstrate that …
-
Verification of feature regions for stops and fricatives in natural speech
The presence of acoustic cues and their importance in speech perception have long remained debatable topics. In spite of several studies that exist in this eld, very little is known about what exactly humans perceive in speech. This research takes a novel approach towards understanding speech …
-
Improving Understanding of Emotional Speech Acoustic Content
… of utterances without facial or body language cues. A known limitation to cochlear implants is the inability to accurately portray the fundamental frequency contour of speech which carries the majority of information needed to identify emotional intent. Without reliable access to the …
Page 1 of 3