نتایج جستجو برای: acoustic equipment

تعداد نتایج: 161708  

Objectives: Voice is influenced by personality. However, it is still questionable which acoustic features are influenced by personality traits. This study aimed to investigate the relationship between acoustic characteristics and personality dimensions. Methods: Thirty-three participants with dysphonia and 33 participants without dysphonia were recruited to take part in this cross-sectional st...

Mohammad Faraji Rad

Acoustic neuromas (AN) are schwann cell-derived tumors that commonly arise from the vestibular portion of the eighth cranial nerve also known as vestibular schwannoma(VS) causes unilateral hearing loss, tinnitus, vertigo and unsteadiness. In many cases, the tumor size may remain unchanged for many years following diagnosis, which is typically made by MRI. In the majority of cases the tumor is s...

Journal: :Energies 2021

Acoustic resonance in closed side branches should be enhanced to improve the efficiency of wind energy harvesting equipment or thermo-acoustic engine. However, gas pipeline transportation systems, this kind acoustic suppressed avoid fatigue damage pipeline. Realizable k-ε delayed detached eddy simulations (DDES) were conducted study effect different branch pipe shapes on resonance. At some flow...

حکیمی‌پژوه, حسین, روحانی, محمودرضا, کارگریان, آمنه,

In this paper with use of Particle in Cell (PIC) simulation method in one dimension the dynamic of ion acoustic soliton is studied. in this method the ions are monitored as particles and the electrons are assumed to be in thermal equilibrium. The dispersion relation of ion acoustic waves is investigated. The results are in good agreement with analytical results showing that in linear regime our...

2005
Sanjay Kumar Dinesh Kant Kumar Melaku Alemu

This paper discusses the speech related information in the facial EMG for applications such as human computer interface. The primary objective of this work is to investigate the use of facial EMG as a voiceless communication medium or to drive computer based equipment by people who are unable to speak. Subjects were asked to pronounce the five English vowels with no acoustic output (voiceless)....

Hamzavi, Rostam, Younesian,

In recent years, need to increase the convenience of trips in railway vehicles causes that train operators and manufacturers focus on reducing the noise level which is sensed by passengers. In this paper, first the state of modeling acoustic noise in cab train is discussed and natural frequencies and acoustic mode shapes are derived and then formulation of acoustic pressure in the cab will be o...

Massah, H.R., Momeni-Masuleh, S.H., Setvati-Zirak, A.,

Investigating waves propagation’s equation in the atmosphere is one of the important and widely used issues in various sciences, which has attracted many researchers. A type of propagating waves is an acoustic-gravity wave. These type of waves have a lot of stationarity properties and can be propagate to a high altitude in the atmosphere. The equation of acoustic-gravity wave propagation is a h...

2008

This document briefly describes the application of QSound® 3D audio processing in Dolby, DTS, MPEG and other surround playback systems. The unique combination of multi-channel source formats and QSound virtual acoustic imaging provides new possibilities in affordable and upgradeable sound solutions for PC multi-media, portable and home theater systems. Also discussed is a unique surround synthe...

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