Effects of vibrato and vowel matching on choral blend: A correlation of spectral analyses and perceptual evaluations

1993 ◽  
Vol 94 (3) ◽  
pp. 1860-1860
Author(s):  
Lawrence R. Brown
Keyword(s):  
Spectral Analyses ◽  
Choral Blend

Vuv Spectra Y to Mo

1988 ◽  
Vol 102 ◽  
pp. 239
Author(s):  
M.S.Z. Chaghtai
Keyword(s):  
Excited States ◽  
Spectral Analyses ◽  
Vuv Spectra

Using R.D. Cowan’s computations (1979) and parametric calculations of Meinders et al (1982), old analyses are thoroughly revised and extended at Aligarh, of Zr III by Khan et al (1981), of Nb IV by Shujauddin et Chaghtai (1985), of Mo V by Tauheed at al (1985). Cabeza et al (1986) confirmed the last one largely.Extensive studies have been reported of the 1–e spectra, Zr IV (Rahimullah et al 1980; Acquista and Reader 1980), Nb V (Shujauddin et al 1982; Kagan et al 1981) and Mo VI (Edlén et al 1985). Some interacting 4p54d2levels of these spectra have been reported from our laboratory, also.Detailed spectral analyses of transitions between excited states have furnished complete energy values for J ≠ 1 levels of these spectra during 1970s and 80s. Shujauddin et al (1982) have worked out Nb VI and Tauheed et al (1984) Mo VII from our lab, while Khan et al (1981) share the work on Zr V with Reader and Acquista (1979).

Synthesis of Novel Bis-pyrazoles via Electrophilic Cyclization

2019 ◽  
Vol 16 (6) ◽  
pp. 511-516
Author(s):  
Adnan Cetin
Keyword(s):  
13C Nmr ◽  
Cyclization Reaction ◽  
Electrophilic Cyclization ◽  
Pyrazole Derivatives ◽  
Spectral Analyses ◽  
Mass Spectral ◽  
Palladium Catalyzed ◽  
Ft Ir ◽  
Reaction Compound

Efficient steps towards the synthesis of novel (phenyl)(1'-aryl-1,5,5'-triphenyl[3,3'-bi-1Hpyrazol]- 4-yl)methanones 4a-e were developed. The procedure starts from 1-(4-benzoyl-1,5-diphenyl- 1H-3-pyrazolyl)-3-phenyl-2-propyn-1-one (2) which was synthesized by a palladium catalyzed crosscoupling reaction. Compound 2 reacted with various hydrazines to give (E)-(phenyl)[1,5-diphenyl-3- [3-phenyl-1-(2-arylhydrazono)-2-propyn-1-yl]-1H-4-pyrazolyl]methanones E-3a-e. The bis-pyrazole derivatives 4a-e were synthesized from electrophilic cyclization reaction of α,β-acetylenic hydrazones E-3a-e and copper(I) iodide. All synthesized compounds were characterized by FT-IR, 1H, 13C NMR and Mass spectral analyses.

scholarly journals An Acoustical Study of Individual Voices in Choral Blend

1980 ◽  
Vol 28 (2) ◽  
pp. 119-128 ◽  
Author(s):  
Allen W. Goodwin
Keyword(s):  
Fundamental Frequencies ◽  
Choral Blend ◽  
Acoustical Study

The purpose of this study was to investigate the phenomenon of choral blend by identifying spectral differences between vocal sounds produced in solo singing and in unison ensemble singing aimed at achieving optimum blend. Individual voices were recorded in isolation by having singers blend with the sustained tones of a prerecorded ensemble heard through earphones along with the singer's own voice. Recordings of the same singers producing corresponding sounds in the style of their solo singing provided pairs of sounds representing both modes of performance. In contrast to solo singing, those sounds produced in blend tended to have slightly stronger fundamental frequencies in combination with fewer and weaker upper partials, and also slightly stronger first formants in combination with weaker second and third formants. The results may explain in part how certain commonly used choral techniques take advantage of particular traits of the aural perception mechanism to produce ensemble blend.

Thermal and spectral analyses of complexes of zinc(II)tetra-tertbutylphthalocyanine with amines

2007 ◽  
Vol 59 (1-2) ◽  
pp. 71-80 ◽  
Author(s):  
Nataliya Sh. Lebedeva ◽  
Elena A. Malkova ◽  
Elena V. Parfenyuk ◽  
Anatoliy I. Vyugin
Keyword(s):  
Spectral Analyses

Coordination versus spodium bonds in dinuclear Zn(ii) and Cd(ii) complexes with a dithiophosphate ligand

2021 ◽  
Author(s):  
Pretam Kumar ◽  
Antonio Frontera ◽  
Sushil K. Pandey
Keyword(s):  
Dft Calculations ◽  
Aqueous Media ◽  
Spectral Analyses ◽  
Index Methods

Two new d10-metal dithiophosphate complexes have been synthesized in purely aqueous media and characterized by elemental and spectral analyses. DFT calculations, QTAIM and NCI Plot index methods are preformed to differentiate the coordination and spodium bonds in the complexes.

Autocorrelation and Spectral Analyses in Hydrology

1968 ◽  
Vol 94 (2) ◽  
pp. 363-374
Author(s):  
Rafael G. Quimpo
Keyword(s):  
Spectral Analyses
Sign in / Sign up

Export Citation Format

Share Document