Notação científica de altura (Portuguese Wikipedia)

Analysis of information sources in references of the Wikipedia article "Notação científica de altura" in Portuguese language version.

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1flutopedia.com

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archive.org

von Helmholtz, Hermann (1912) [1870]. Die Lehre von den Tonempfindungen als physiologische Grundlage für die Theorie der Musik. Traduzido por Ellis, A.J. 4 ed. [S.l.: s.n.] – via Internet Archive

doi.org

dx.doi.org

Young, Robert W. (1939). «Terminology for Logarithmic Frequency Units». Journal of the Acoustical Society of America. 11: 134–000. Bibcode:1939ASAJ...11..134Y. doi:10.1121/1.1916017

flutopedia.com

International Pitch Notation

harvard.edu

ui.adsabs.harvard.edu

Young, Robert W. (1939). «Terminology for Logarithmic Frequency Units». Journal of the Acoustical Society of America. 11: 134–000. Bibcode:1939ASAJ...11..134Y. doi:10.1121/1.1916017

iso.org

ISO 16:1975 Acoustics – Standard tuning frequency (Standard musical pitch). International Organization for Standardization. [S.l.: s.n.] 1975

nasa.gov

science.nasa.gov

«Black hole sound waves» (Nota de imprensa). NASA. Sound waves 57 octaves lower than middle-C are rumbling away from a supermassive black hole in the Perseus cluster.