Series of Difference Tones Obtained from Tunable Bars

1922 ◽  
Vol 33 (3) ◽  
pp. 385
Author(s):  
Paul Thomas Young
Keyword(s):  
Difference Tones

PALMESTHETIC BEATS AND DIFFERENCE TONES

Science ◽  
1913 ◽  
Vol 37 (953) ◽  
pp. 532-535 ◽  
Author(s):  
K. Dunlap
Keyword(s):  
Difference Tones

The difference between difference tones and rapid beats

1981 ◽  
Vol 49 (7) ◽  
pp. 632-636
Author(s):  
Donald E. Hall
Keyword(s):  
Difference Tones ◽  
The Difference

On the Existence of Combination Tones as Physical Entities

1980 ◽  
Vol 28 (2) ◽  
pp. 129-134
Author(s):  
Glenn White ◽  
Kate Grieshaber
Keyword(s):  
Previous Experiment ◽  
Future Research ◽  
Complex Tones ◽  
Difference Tones ◽  
Test Instrumentation ◽  
Environmental Difference

It was theorized that measures of objective difference tones found in a previous experiment were artifacts of test instrumentation. In an experiment that eliminated most of the possible error-producing instrumentation, no environmental difference tones were detected, although perceptual ones were. A recommendation is made that future research regarding combination tones be conducted using complex tones rather than sine tones, which do not occur in music.

The induced infrared fundamental band of hydrogen dissolved in solid argon

1968 ◽  
Vol 46 (10) ◽  
pp. 1181-1189 ◽  
Author(s):  
R. J. Kriegler ◽  
H. L. Welsh
Keyword(s):  
Path Length ◽  
Lattice Site ◽  
Lattice Vibration ◽  
Liquid Solution ◽  
Absorption Path Length ◽  
Slow Cooling ◽  
Zero Phonon Line ◽  
Fundamental Band ◽  
Difference Tones ◽  
Solid Argon

The induced infrared fundamental band of hydrogen dissolved (~1:100) in solid argon was studied with a 20-cm absorption path length at −191 °C. Transparent crystals were prepared by slow cooling of the liquid solution saturated with hydrogen at ~25 atm pressure. The H2 transitions, Q, S(0), and S(1), show similar patterns of five maxima, each of which can be analyzed as a zero-phonon line at the H2 frequency and summation and difference tones with lattice transition frequencies, 112 and 22 cm−1. The 112-cm−1 frequency is interpreted as arising from a localized lattice vibration involving an H2 molecule on a substitutional lattice site. Calculation from a model of an H2 molecule moving in the field of its argon neighbors, considered stationary, gave 109 cm−1 for this frequency. The origins of the zero-phonon lines and the 22-cm−1 lattice transition frequency are not so clear, and several possibilities are discussed. The H2 frequencies are shifted from their free-molecule values by the sum of a vibrational shift, Δνvlb = −17 cm−1, and rotational shifts corresponding to ΔB = −0.52 cm−1.

Djuro Zivkovic/Difference Tones

2015 ◽  
pp. 231-255
Author(s):  
Djuro Zivkovic ◽  
Daniel Mayer ◽  
Gerhard Nierhaus
Keyword(s):  
Difference Tones

THE INFRARED AND RAMAN SPECTRA OF HC(CD3)3 AND DC (CD3)3

1957 ◽  
Vol 35 (9) ◽  
pp. 969-979 ◽  
Author(s):  
J. K. Wilmshurst ◽  
H. J. Bernstein
Keyword(s):  
Raman Spectra ◽  
Infrared Spectra ◽  
Infrared And Raman Spectra ◽  
Vibrational Assignment ◽  
Difference Tones ◽  
Modified Assignments ◽  
Depolarization Ratios

The Raman spectra of liquid (CD3)3CH and (CD3)3CD were obtained photoelectrically together with depolarization ratios, and the infrared spectra of the corresponding gases were obtained from 3 to 35 μ. A vibrational assignment consistent with depolarization ratios and band contours has been made for the molecules on the basis of C3v symmetry. The spectra have been correlated with the spectra of (CH3)3CH and (CH3)3CD and modified assignments for two modes have been given for these molecules. Tentative assignments have been made for the 'inactive' A2 modes (which are 'active' if the molecule has symmetry C3) to explain some of the observed frequencies around 1000 cm.−1 which could not be satisfactorily assigned as summation or difference tones.

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