Interferometry and computer‐aided tomography as an acoustic analysis tool

2004 ◽  
Vol 115 (5) ◽  
pp. 2547-2547
Author(s):  
Ron J. Wyber ◽  
Brian G. Ferguson
Keyword(s):  
Acoustic Analysis ◽  
Analysis Tool ◽  
Computer Aided

“I Can See What You’re Saying”: Clinical Utility of Spectral Moment Analysis

2011 ◽  
Vol 21 (2) ◽  
pp. 44-54
Author(s):  
Kerry Callahan Mandulak
Keyword(s):  
Speech Production ◽  
Speech Signal ◽  
Clinical Utility ◽  
Acoustic Analysis ◽  
Moment Analysis ◽  
Analysis Tool ◽  
Spectral Moment ◽  
Clinical Measure ◽  
Perceptual Analysis ◽  
Disordered Speech

Spectral moment analysis (SMA) is an acoustic analysis tool that shows promise for enhancing our understanding of normal and disordered speech production. It can augment auditory-perceptual analysis used to investigate differences across speakers and groups and can provide unique information regarding specific aspects of the speech signal. The purpose of this paper is to illustrate the utility of SMA as a clinical measure for both clinical speech production assessment and research applications documenting speech outcome measurements. Although acoustic analysis has become more readily available and accessible, clinicians need training with, and exposure to, acoustic analysis methods in order to integrate them into traditional methods used to assess speech production.

scholarly journals A Flexible Analysis Tool for the Quantitative Acoustic Assessment of Infant Cry

2013 ◽  
Vol 56 (5) ◽  
pp. 1416-1428 ◽  
Author(s):  
Brian Reggiannini ◽  
Stephen J. Sheinkopf ◽  
Harvey F. Silverman ◽  
Xiaoxue Li ◽  
Barry M. Lester
Keyword(s):  
Acoustic Analysis ◽  
Ground Truth ◽  
High Accuracy ◽  
Frame Rate ◽  
Automated System ◽  
Detection Methods ◽  
Analysis Tool ◽  
Infant Cry ◽  
Basic And Applied Research ◽  
Audio Files

Purpose In this article, the authors describe and validate the performance of a modern acoustic analyzer specifically designed for infant cry analysis. Method Utilizing known algorithms, the authors developed a method to extract acoustic parameters describing infant cries from standard digital audio files. They used a frame rate of 25 ms with a frame advance of 12.5 ms. Cepstral-based acoustic analysis proceeded in 2 phases, computing frame-level data and then organizing and summarizing this information within cry utterances. Using signal detection methods, the authors evaluated the accuracy of the automated system to determine voicing and to detect fundamental frequency (F 0 ) as compared to voiced segments and pitch periods manually coded from spectrogram displays. Results The system detected F 0 with 88% to 95% accuracy, depending on tolerances set at 10 to 20 Hz. Receiver operating characteristic analyses demonstrated very high accuracy at detecting voicing characteristics in the cry samples. Conclusions This article describes an automated infant cry analyzer with high accuracy to detect important acoustic features of cry. A unique and important aspect of this work is the rigorous testing of the system's accuracy as compared to ground-truth manual coding. The resulting system has implications for basic and applied research on infant cry development.

Research on Computer Aided Index System Establishment of SWOT

2014 ◽  
Vol 519-520 ◽  
pp. 899-904
Author(s):  
Jin Shi ◽  
Jin Han ◽  
Yue Qi Liu
Keyword(s):  
Key Words ◽  
Index System ◽  
Swot Analysis ◽  
Competitive Intelligence ◽  
Analysis Tool ◽  
Classical Analysis ◽  
Computer Aided ◽  
System Establishment ◽  
The Index System ◽  
Internal And External Factors

SWOT analysis is a classical analysis tool of competitive intelligence. The affect depends on whether all internal and external factors were analyzed. The construction of index system of SWOT analysis requires a lot of human resource. To resolve this issue, a method for computer aided index system establishment of SWOT analysis is proposed. This method can be automated extract and classify the key words. And the index system of SWOT analysis is generated by words classified information contained in words categories. In addition, the method can generate suggestions of indexes weight according to the amount, frequency and timing of key words contained in their classes.

Acoustic Qualities of Phonation in Young Hearing-Impaired Children

1979 ◽  
Vol 22 (2) ◽  
pp. 270-288 ◽  
Author(s):  
Randall B. Monsen
Keyword(s):  
Fundamental Frequency ◽  
Acoustic Analysis ◽  
Voice Quality ◽  
Hearing Impaired ◽  
Spectral Energy ◽  
Acoustic Characteristics ◽  
Computer Aided ◽  
Different Types ◽  
Hearing Children ◽  
Impaired Children

Monosyllables were recorded from a group of 24 hearing-impaired and 6 normal-hearing children between three to six years of age. Tokens of the syllables /ba/ and /bo/ were placed on listening tapes and a panel of 10 experienced listeners made ratings of relative voice quality. The phonation samples were subjected to both a gross (spectrographic) and a fine (computer-aided) acoustic analysis. The following acoustic characteristics were examined: (1) mean fundamental frequency, (2) duration, (3) mean period-to-period changes in intensity and in fundamental frequency, (4) spectral energy ratio above and below 1000 Hz, and (5) intonation contour. The type of intonation contour appeared to be the most important characteristic separating the better from the poorer deaf speakers. The hearing-impaired subjects produced four different types of deviant intonation contours. In addition, two abnormalities of phonation, diplophonia and breathiness, are described.

scholarly journals HOSS: an implementation of the combined finite-discrete element method

2020 ◽  
Vol 7 (5) ◽  
pp. 765-787
Author(s):  
Earl E. Knight ◽  
Esteban Rougier ◽  
Zhou Lei ◽  
Bryan Euser ◽  
Viet Chau ◽  
...  
Keyword(s):  
Discrete Element Method ◽  
Acoustic Analysis ◽  
Computational Mechanics ◽  
National Laboratory ◽  
Particle Interaction ◽  
Discrete Element ◽  
Material Behavior ◽  
Analysis Tool ◽  
Fluid Solid Interaction ◽  
Element Method

Abstract Nearly thirty years since its inception, the combined finite-discrete element method (FDEM) has made remarkable strides in becoming a mainstream analysis tool within the field of Computational Mechanics. FDEM was developed to effectively “bridge the gap” between two disparate Computational Mechanics approaches known as the finite and discrete element methods. At Los Alamos National Laboratory (LANL) researchers developed the Hybrid Optimization Software Suite (HOSS) as a hybrid multi-physics platform, based on FDEM, for the simulation of solid material behavior complemented with the latest technological enhancements for full fluid–solid interaction. In HOSS, several newly developed FDEM algorithms have been implemented that yield more accurate material deformation formulations, inter-particle interaction solvers, and fracture and fragmentation solutions. In addition, an explicit computational fluid dynamics solver and a novel fluid–solid interaction algorithms have been fully integrated (as opposed to coupled) into the HOSS’ solid mechanical solver, allowing for the study of an even wider range of problems. Advancements such as this are leading HOSS to become a tool of choice for multi-physics problems. HOSS has been successfully applied by a myriad of researchers for analysis in rock mechanics, oil and gas industries, engineering application (structural, mechanical and biomedical engineering), mining, blast loading, high velocity impact, as well as seismic and acoustic analysis. This paper intends to summarize the latest development and application efforts for HOSS.

Geometrical Robust Form Division

2007 ◽  
Author(s):  
Andreas Dagman ◽  
Rikard So¨derberg
Keyword(s):  
Product Design ◽  
Industrial Design ◽  
Analysis Tool ◽  
Design Intent ◽  
Robust Solution ◽  
Design Concepts ◽  
Automobile Body ◽  
Computer Aided ◽  
Manufacturing Variation

By combining a Computer Aided Industrial Design (CAID) tool with a Computer Aided Tolerancing (CAT) tool, concurrent work between two related, but in industry often separated, areas with correlated product design features is facilitated. This paper presents an analysis tool that allows the creation and evaluation of split-lines in design concepts with respect to geometrical robustness and aesthetics. The aim with the analysis tool is to create products that are insensitive to manufacturing variation with the industrial design intent preserved. Since the split-lines are clues to detecting variation in assembled products, as well as part of the design language and the characterization of the product, it is important to work with these issues concurrently. The platform concept has been increasingly adopted in companies which, in many cases, provide an inheritance of the locating schemes, thus affecting the geometrical robustness of the concept, between models and sometimes even brands. This means that the parts creating an assembled product need to be designed in such a way that they satisfy the locating scheme configuration to achieve a geometrically robust solution. The functionality of the analysis tool has been demonstrated on an automobile body.

Integrated Hierarchical Durability Design Tool for Electronic Packaging

2007 ◽  
Author(s):  
Jung-Chuan Lee ◽  
David W. Twigg ◽  
Mostafa Rassaian
Keyword(s):  
Solder Joint ◽  
Acoustic Analysis ◽  
Fatigue Analysis ◽  
Design Tool ◽  
Analysis Tool ◽  
Durability Design ◽  
Order Of Magnitude ◽  
Solder Joint Fatigue ◽  
Free Solder ◽  
Level Analysis

Durability and reliability of solder joint interconnections between electronic parts and printed wiring assemblies (PWA) in a vibration environment is increasingly important since the introduction of lead-free solder, which is known to be an order of magnitude more susceptible to fatigue failure than its tin-lead counterpart. In this paper, an integrated hierarchical durability design tool is introduced to analyze the Line Replaceable Units (LRU) as a whole under a vibration environment. The results will be used for solder joint fatigue analysis. This paper describes the automation of box-, board-, and part-level analyses. The box-level analysis combines PWA’s and the mounting chassis in an automated fashion. The construction of PWA’s is also through this automated tool. NIKE3D-based acoustic analysis tool is conducted on the assembled model for vibration analysis. The results are exported to the automated part-level analysis for final solder joint fatigue analysis and to subsequent visualization display. This paper illustrates this detailed processes and presents a simple example will be presented.

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