Results 221 to 230 of about 1,458 (254)
Vibration overtone hyperpolarizability measured for H2
Journal of Chemical Physics, 2020 The second hyperpolarizability (γ) of the H2 molecule was measured by gas-phase electric field induced second harmonic generation at the frequencies of the one-photon resonance for the 3–0 Q(J) overtone transitions (v, J = 0, J → 3, J for J = 0, 1, 2 ...
Rachel M Ellis +2 more
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Gas-phase CH-Overtone band spectra of methyl acetate and ethyl acetate via incoherent broad-band cavity-enhanced absorption spectroscopy [PDF]
Chemical Physics Letters, 2022 Gas-phase CH-stretching overtone bands of the two volatile organic compounds methyl acetate and ethyl acetate were detected for up to v = 6–0 by incoherent broad-band cavity-enhanced absorption spectroscopy.
Mitsunori Araki +2 more
exaly +2 more sources
Overtone mobility spectrometry: Part 2. Theoretical considerations of resolving power
Journal of the American Society for Mass Spectrometry, 2009 The transport of ions through multiple drift regions is modeled to develop an equation that is useful for an understanding of the resolving power of an overtone mobility spectrometry (OMS) technique.
Stephen J Valentine +2 more
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Some of the next articles are maybe not open access.
The design of bells with harmonic overtones
The Journal of the Acoustical Society of America, 2003Musical bells have had limited application due to the presence of inharmonic partials in the lower part of their acoustic spectra. A series of bells has been designed that contains up to seven partial frequencies in the harmonic series beginning at the fundamental frequency. This was achieved by choosing geometries for finite-element analysis models in
Neil, McLachlan +2 more
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The Journal of the Acoustical Society of America, 2023
Flageolet harmonics is a playing technique, in which a player lightly touches a nodal point on a string with their finger. Previous studies have reported that the harmonic sound sustains for a short time after the finger is removed from the string while flageolet harmonics is performed on bowed string instruments.
Shodai Tanaka, Hiroshi Kori, Ayumi Ozawa
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Flageolet harmonics is a playing technique, in which a player lightly touches a nodal point on a string with their finger. Previous studies have reported that the harmonic sound sustains for a short time after the finger is removed from the string while flageolet harmonics is performed on bowed string instruments.
Shodai Tanaka, Hiroshi Kori, Ayumi Ozawa
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The overtone structure of acoustic fluctuations due to harmonic variations in sound speed (L)
The Journal of the Acoustical Society of America, 2005Explicit relations are derived between the acoustic pressure and a sound speed that is periodic. They are derived for the Pekeris waveguide, and extended to the range and depth-dependent adiabatic mode/WKB case. As expected, acoustic pressure is found to fluctuate at the sound speed fundamental and its overtones.
Robert L, Field, Jacob, George
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Separation of harmonic sounds using multipitch analysis and linear models for the overtone series
The Journal of the Acoustical Society of America, 2002A signal processing method for the separation of concurrent harmonic sounds is described. The method is based on a two-stage approach. First, a multiple fundamental frequency estimator is applied to find initial sound parameters which are reliable, but inaccurate and static.
Tuomas Virtanen, Anssi Klapuri
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Journal of the Acoustical Society of America, 2016
Perceived timbral brightness is often predicted by “sharpness,” which is the conventional predictor described by von Bismarck. Perceived brightness and the predicted “sharpness” value increases when the energy of harmonic overtones in high-frequency range increases.
Koji Tsumoto +2 more
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Perceived timbral brightness is often predicted by “sharpness,” which is the conventional predictor described by von Bismarck. Perceived brightness and the predicted “sharpness” value increases when the energy of harmonic overtones in high-frequency range increases.
Koji Tsumoto +2 more
openaire +1 more source
TE Harmonic Overtone Mode Energy-Trapped Ceramic Filter with Narrow Frequency Tolerance
Japanese Journal of Applied Physics, 1997Experimental studies have been made on the suppression of two major spurious responses, i.e., inharmonic overtones and the 6th thickness-shear-mode harmonic overtone, to realize a 3rd overtone thickness-extension double-mode bandpass filter using PbTiO3 ceramic substrates.
Yoshinari Yamashita +2 more
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