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 63 for “"acoustic features"”.
-
Evaluation of content-based acoustic features for musical genre classification
In this thesis, we evaluate content-based acoustic features for musical genre classification. Effectiveness of various acoustic features are compared using a k-nearest neighbor (KNN) classifier. By utilizing the combinations of acoustic features, an average classification accuracy of $89\%$ for …
-
Automated auscultation : using acoustic features to diagnose mitral valve prolapse
… analyzing this prototypical beat. We extract 31 features from the prototypical beat, focusing on systolic activity. We then use the feature set as input to a radial-kernel support vector machine (SVM), which gives a binary classification of the subject as an MVP or non-MVP patient. We support our …
-
Acoustic features of impaired articulation due to amyotrophic lateral sclerosis
… was to derive objective measures of speech acoustics that can be used to support clinical decision making. To achieve this goal, we obtained 121 speech samples from 33 patients with ALS who repeated the phrase "Buy Bobby a puppy" five times in succession. In total, 342 acoustic features were …
-
Classifying Laughter: An Exploration Of The Identification and Acoustic Features of Laughter Types
… purpose in communication, identifiability, and acoustic features. Reviewing the existing literature, this paper identifies three main types of laughter: affiliative, de-escalative, and power. Consulting with research assistants, this paper then classifies 113 instances of laughter from 62 …
-
THE RELATIONSHIP BETWEEN ACOUSTIC FEATURES OF SECOND LANGUAGE SPEECH AND LISTENER EVALUATION OF SPEECH QUALITY
Second language (L2) speech is typically less fluent than native speech, and differs from it phonetically. While the speech of some L2 English speakers seems to be easily understood by native listeners despite the presence of a foreign accent, other L2 speech seems to be more demanding, such that …
-
"Knowing a thing is ""a thing"": The use of acoustic features in multiword expression extraction"
… In this thesis I demonstrate that prosodic features, which are helpful in parsing syntax and interpreting meaning, can also be used to identify multiword expressions. To do this, I extracted noun phrases from the Buckeye corpus, which contains spontaneous spoken language, and matched these …
-
Perceptual and acoustic features of speech in individuals with Down syndrome and their impact on speech intelligibility
… their reliability has been called into question. Acoustic analysis methods can provide a more objective view of certain aspects of speech production. For example, mean fundamental frequency can provide an accurate measure for vocal pitch. Due to a number of factors such as anatomical features and …
-
An Exploratory Study of Effects of Lecture's Acoustic Features on L1 Chinese Listeners' Listening Comprehension of Online L2 English Lectures
This study explored the effects of lecture speech rate and duration on L1 Chinese listeners' listening comprehension of online L2 English lectures on free-recall and cued-recall questions. There are many factors that may affect a Chinese listener's listening comprehension of online English …
-
Object-centered representations in echolocating dolphins: evidence from acoustic analyses of object echoes and a human listening study
… among objects, and then characterizing the acoustic information contained in the object echoes. A dolphin performed a match-to-sample task in which it was presented with a sample object and then had to choose the same object from a group of three objects. Acoustic measurements of the objects …
-
Multiview feature learning for speech recognition
… problem of learning a linear transformation of acoustic feature vectors for speech recognition, in a framework where apart from the acoustics, additional views are available at training time. We consider a multiview learning approach based on canonical correlation analysis to learn linear …
-
A verification experiment of the second formant transition feature as a perceptual cue in natural speech
… has been devoted toward understanding the acoustic features that are used as perceptual cues in human speech perception. A brief history of this research is given, with emphasis on one important feature, the second formant (F2) transition. A review of historical arguments made for and …
-
Model-Based Speech Enhancement
… that reconstructs clean speech from a set of acoustic features using a harmonic plus noise model of speech. This is a significant departure from traditional filtering-based methods of speech enhancement. A major challenge with this approach is to estimate accurately the acoustic features …
-
Experience dependent coding of intonations by offsets in mouse auditory cortex
Acoustic communication is an important aspect of many social interactions across mammalian species. The encoding of intra-species vocalizations and plasticity mechanisms engaged during the process of learning vocalizations are poorly understood. This is particularly true with regards to how sensory …
-
SPONTANEOUS SPEECH ANALYSIS FOR DETECTING MILD COGNITIVE IMPAIRMENT AND ALZHEIMER’S DISEASE IN THAI OLDER ADULTS
… were extracted into the content variables and acoustic features. Then the discriminant ability and accuracy in differentiating HC, MCI, and AD were examined with by Multivariate Discriminant Analysis (MDA) and analysis of the ROC curve and AUC. Two content variables showed significant …
-
Lietuvių ir latvių tarmių monoftongų priegaidžių akustiniai požymiai: lyginamoji analizė /
The dissertation focuses on the acoustic base of long vowel tones in Lithuanian and Latvian dialects (the material under analysis comes from two dialect areas, namely the subdialects in the Telšiai in the northern Samogitia, and the central Latvia). The aim was to determine what acoustic features …
-
Perceived Similarity Between Complex Sounds: The Contribution Of Acoustic, Descriptive And Categorical Features
The thesis identifies some of the most salient acoustic and descriptive features employed in listeners' representations of sounds focussing on similarity judgements. A range of descriptive data (including word pair and imagery/word use) was collected alongside acoustic measures for the sound …
-
The identification and function of English prosodic features
… the identification and function of prosodic features in English. The first set of studies explores the identification of prosodic features using prosodic annotation. We compared inter-rater agreement for two current prosodic annotation schemes, ToBI (Silverman, et al., 1992) and RaP (Dilley & …
-
Effects of altered prenatal auditory experience on postnatal auditory preferences in bobwhite quail chicks
Part I of the present study analyzed the acoustic features of bobwhite quail embryonic vocalizations emitted during the final 36 hours prior to hatching. Using software for sound spectrographic analyses, information was collected on the average fundamental frequency, frequency modulation and range, …
-
Understanding and mitigating the privacy risks of smartphone sensor fingerprinting
… microphones and speakers. We explore different acoustic features and analyze their ability to successfully fingerprint smartphones. Our study identifies the prominent acoustic features capable of fingerprinting smartphones with a high success rate, and also examines the impact of background …
-
Sound-source recognition : a theory and computational model
… 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 whenever the target sound is degraded by reverberation, noise, or competing sounds. …
Page 1 of 4