Solo los usuarios registrados pueden traducir artículos
Iniciar sesión Registrarse
Violin corpus wall compliance, which has a substantial effect on cavity mode frequencies, was added to Shaw's two-degree-of-freedom (2DOF) network model for A0 ("main air") and A1 (lowest length mode included in "main wood") cavity modes. The 2DOF model predicts a V(-0.25) volume dependence for A0
Solo los usuarios registrados pueden traducir artículos
Iniciar sesión Registrarse
Violin radiativity profiles are dominated by the Helmholtz-like A0 cavity mode ( approximately 280 Hz), first corpus bending modes B1(-) and B1(+) ( approximately 500 Hz), and BH and bridge-filter peaks ( approximately 2.4 kHz and approximately 3.5 kHz, respectively), with falloff above
Solo los usuarios registrados pueden traducir artículos
Iniciar sesión Registrarse
The violin radiates either from dual ports (f-holes) or via surface motion of the corpus (top+ribs+back), with no clear delineation between these sources. Combining "patch" near-field acoustical holography over just the f-hole region of a violin with far-field radiativity measurements over a sphere,
Solo los usuarios registrados pueden traducir artículos
Iniciar sesión Registrarse
A hybrid, deterministic-statistical, parametric "dynamic filter" model of the violin's radiativity profile [characterized by an averaged-over-sphere, mean-square radiativity (R(ω)(2))] is developed based on the premise that acoustic radiation depends on (1) how strongly it vibrates [characterized by
Solo los usuarios registrados pueden traducir artículos
Iniciar sesión Registrarse
Experimental modal analysis of a complete Hutchins-Schelleng violin octet, combined with cavity mode analysis and room-averaged acoustic analysis, gives a highly detailed characterization of the dynamics for this historic group of instruments. All the "signature" modes in the open string pitch
Solo los usuarios registrados pueden traducir artículos
Iniciar sesión Registrarse
A 1 cm long, low-finesse fiber-optic cavity was used as a transducer for the vibrations of the soundboard of an acoustic guitar and of a violin. The reflected light is detected and then amplified and recorded using conventional audio instrumentation. The fiber-optic pickup is found to have a high
Solo los usuarios registrados pueden traducir artículos
Iniciar sesión Registrarse
Modal-acoustic radiation measurements on 17 "bad-to-excellent" quality-rated violins--including three-dimensional modal analyses of Titian and Willemotte Stradivari and Plowden Guarneri del Gesu violins to investigate extensional as well as flexural motions-were examined for quality-related trends,
Solo los usuarios registrados pueden traducir artículos
Iniciar sesión Registrarse
The fact that acoustic radiation from a violin at air-cavity resonance is monopolar and can be determined by pure volume change is used to help explain related aspects of violin design evolution. By determining the acoustic conductance of arbitrarily shaped sound holes, it is found that air flow at
Solo los usuarios registrados pueden traducir artículos
Iniciar sesión Registrarse
Left ventricular false tendons are thin, fibromuscular structures which traverse the left ventricular cavity. They are thought to be intracavitary radiations of the bundle of His. Usually these tendons span between the interventricular septum and the lateral wall or a papillary muscle. They have
Solo los usuarios registrados pueden traducir artículos
Iniciar sesión Registrarse
Two women aged 53 and 22 years presented with abdominal pain and signs of sepsis with metabolic acidosis. The first patient had ecchymoses all over her body, the second patient had an enlarged left kidney with wedge-shaped hypo-intense areas on the CT scan. The clinical condition of both women
Solo los usuarios registrados pueden traducir artículos
Iniciar sesión Registrarse
String instruments are usually composed of a set of strings, a soundboard, and a soundbox with sound holes, which is generally designed to increase the sound level by using the acoustic resonances of the cavity. In the case of the harp, the soundbox and especially the sound holes are primarily
La base de datos de hierbas medicinales más completa respaldada por la ciencia
Funciona en 55 idiomas
Curas a base de hierbas respaldadas por la ciencia
Reconocimiento de hierbas por imagen
Mapa GPS interactivo: etiquete hierbas en la ubicación (próximamente)
Leer publicaciones científicas relacionadas con su búsqueda
Buscar hierbas medicinales por sus efectos.
Organice sus intereses y manténgase al día con las noticias de investigación, ensayos clínicos y patentes.
Escriba un síntoma o una enfermedad y lea acerca de las hierbas que podrían ayudar, escriba una hierba y vea las enfermedades y los síntomas contra los que se usa. * Toda la información se basa en investigaciones científicas publicadas.