one of the fields of creation and practice expansion is an attempt to diversify and multiply melodic modules which can increase practical potentials in a musical system. the most fundamental element of a sonic- musical atmosphere (mode) is ambits of tone; in other words, it is a sequence of tones with specific frequency. therefore, melodic modules combination depends on acoustical features and ...

2 Walking experiment 4 2.1 Methods . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 2.1.1 Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 2.1.2 Participants . . . . . . . . . . . . . . . . . . . . . . . . . . 4 2.1.3 Acoustical analyses . . . . . . . . . . . . . . . . . . . . . . 4 2.1.3.1 Extraction of walking excerpts . . . . . . . . . . 5 2.1.3.2 Acoustical...

The modern use of ancient heritage sites can be, to say the least, challenging from an acoustical perspective. In fact, modern needs may require acoustical interventions in contrast with the preservation issues of the cultural heritage. This paper deals with this topic in an UNESCO designated world heritage site, the Palatine Chapel of the Royal Palace in Caserta, Italy. Since this chapel is cu...

New emerging multimedia standards, like the MPEG-4 standard allow the creation of virtual or synthetic acoustical environments. To auralize an environment from its geometric description, simulation algorithms for acoustic wave propagation are required. The different methods used for computational modeling of room acoustics can be divided into three groups [1]: statistical models, ray-based mode...

A frequency-domain model of trombone sound production that includes the effects of wave steepening is proposed. This model builds upon the work of Msallam et al. @Proceedings of the Institute of Acoustics 19~5!, 419–424 ~1997!# by including thermoviscous wall losses in a more realistic manner, by applying wave steepening systematically to the entire instrument, and by making quantitative compar...

We have performed elasticity measurements in the bulk multiferroic BiFeO3 (BFO) using acoustical pump and probe spectroscopy. The sound velocities of (quasi)-longitudinal two (quasi)-transverse acoustic waves along three independent directions (110) surface been measured. Moreover, one wave longitudinal propagating perpendicular to detected. Based on initial input values six Cij elastic constan...

Acoustical and optical non-diffracting beams are potentially useful for manipulating particles and larger objects. An extended optical theorem for a non-diffracting beam was given recently in the context of acoustics. The theorem relates the extinction by an object to the scattering at the forward direction of the beam's plane wave components. Here we use this theorem to examine the extinction ...

Recent work has led to highly efficient physics-based computational models of wave propagation in strings, acoustic tubes, membranes, plates, and rooms using the digital waveguide filter, the 2-D digital waveguide mesh, and the 3-D tetrahedral digital waveguide mesh, all of which are suitable for real-time musical synthesis applications. A simple first-order nonlinear filter structure derived f...

Pulsed wave 2 MHz Doppler with acoustical focusing was used to obtain blood flow velocity recordings through the intact cranium in 11 patients with occlusive disease of major intracranial arteries. Increased blood flow velocities were recorded from stenoses of the carotid siphon and of the middle cerebral, anterior cerebral and basilar arteries. A clear, inverse relationship existed between ang...

This chapter provides an overview of how a powerful acoustical principle – sympathetic resonance – has been applied to our organ of hearing. It focuses on the principle’s virtues, drawbacks, and varying fortunes. Why did Helmholtz’s resonance theory of hearing in the 1850s fall from universal acceptance to near total disregard? What were the factors favouring traveling wave theories, most notab...