Social interactions among individuals are often mediated through acoustic signals. If acoustic signals are consistent and related to an individual's personality, these consistent individual differences in signalling may be an important driver in social interactions. However, few studies in non-human mammals have investigated the relationship between acoustic signalling and personality. Here we ...

diesel exhaust particles are a complex mixture of thousands of gases and fine substances that contain more than 40 different environmental contaminants. being exposed to these exhaust particles (called soot) can cause lung damage and respiratory problems. diesel particulate filters are used in many countries for mobile sources as a legal obligation to decrease harmful effect of these fine parti...

This paper reports the results of an experimental study on non-native production of English vowels. Two groups of Persian EFL learners varying in language proficiency were tested on their ability to produce the nine plain vowels of American English. Vowel production accuracy was assessed by means of acoustic measurements. Ladefoged and Maddison’s (1996) F1 F2 measurements for American English v...

Most control methods in additive manufacturing (AM) are mainly based on temperature or high resolution imaging. However, no methods are known to monitor the quality of AM in realtime. Our approach is very innovative for the quality monitoring of the process online by combining acoustic emission (AE) with machine learning. The machine parameters were changed when processing a steel 316L to get t...

OBJECTIVE To evaluate the voice quality of patients with idiopathic Parkinson's disease, at the "on" and "off" moments of the disease. METHOD Five individuals with Parkinson's disease and five of the control group were assessed. All of them underwent the recording of voice and speech. The acoustic parameters analyzed were: fundamental frequency, jitter, shimmer, harmonic noise proportion and ...

It’s always helpful if we can predict how well a recognition system can perform for different tasks and evaluate the quality of different acoustic models. This paper presents a way to compute the acoustic similarity between words of a recognition task from the statistic models directly based on 2 kinds of definitions of the acoustic distance between recogniton units. It’s applications for comma...

K. Nowacki, P. Musiał, T. Lis Silesian University of Technology, Department of Metallurgy, Katowice, Poland Acoustic steel processing in an ingot mould may be the fi nal stage in the process of quality improvement of a steel ingot. The impact of radiation and cavitation pressure as well as the phenomena related to the acoustic wave being emitted and delivered to liquid steel aff ect various asp...

With the advancement of MEMS technologies, wireless networks consist of tiny sensor devices hold the promise of revolutionizing sensing in a wide range of application domains because of their flexibility, low cost and ease of deployment. However, the constrained computation power, battery power, storage capacity and communication bandwidth of the tiny devices pose challenging problems in the de...

Despite the fact that perceptual evaluations are considered the ‘gold standard’ for evaluation of voice quality, there are some drawbacks. They are time-consuming and remain subjective. Hence the use of acoustic measures is interesting. This article describes some common pitfalls of acoustic analyses, the outcomes of acoustic analyses in tracheoesophageal speakers, and their perceptual relevance.