in this study, the disadvantages of wood, which is widely employed in producing music instruments, are discussed. for example, high moisture sensitivity, low impact resistance, and time-consuming procedure as well as various properties of different species or in several parts of one specimen which are the main problems of wooden music instruments are extensively discussed in this paper. many ma...

Þ Goal: Þ Analyze a free classification of vocal imitations of everyday sounds. Þ Highlight the acoustic properties of the imitated sound sources. Þ Motivations: Þ Vocal imitations are simple but still allow the recognition of the imitated sources. Þ They provide a paradigm for studying the acoustic invariants of the sounds. Þ Contributions: Þ Analysis of the individual strategies with the RV c...

A method for estimating the sound absorption coefficient of a material under a synthesized Diffuse Acoustic Field was recently proposed, as an alternative to classical sound absorption measurements in reverberant rooms. Using sound field reproduction approaches and a synthetic array of acoustic monopoles facing the material, estimation of the sound absorption coefficient under a reproduced Diff...

This paper presents an investigation into predicting the movement of a speaker’s mouth from text input using hidden Markov models (HMM). A corpus of human articulatory movements, recorded by electromagnetic articulography (EMA), is used to train HMMs. To predict articulatory movements for input text, a suitable model sequence is selected and a maximum-likelihood parameter generation (MLPG) algo...

the course of consecutive experiments in this report aimed to a research or introductory identification about mechanical and acoustical properties of maple (acer velutinum) wood. studied factors were included quality factor (due to internal friction), acoustic coefficient, acoustical conversion efficiency as well as the modulus of elasticity (young’s modulus) which they were all accomplished us...

Background: Since in multiple sclerosis (MS), changes in speech and voice quality often precede other signs and symptoms; early diagnosis of these changes is necessary. In this study, an acoustic examination of phonation subsystem was performed. Due to the progressive nature of multiple sclerosis, the aim of this study was to examine the correlation between acoustic parameters ...

Stereausis is a biologically motivated model proposed by Shamma which encodes both binaural and spectral information in a unified framework to simulate the processing of human binaural auditory system. In this paper, a new type of cepstrum coefficient is proposed based on this model. Two-channel acoustic signals are first processed by the stereausis binaural model to synthesize the spectral inf...

Abstract The restitution coefficient is used to characterize the energy loss in particle impact, which an important parameter for discrete element simulation and mechanical system motion analysis. However, of many materials needs be determined, key material properties affecting are still unclear. In this paper, acoustic frequency sampling method was study coefficients 10 representative particle...