Re: spectrogram/sonogram aspect ratio ("Grabsch Hans-Peter (FV/FLP) *" )

Subject: Re: spectrogram/sonogram aspect ratio
From:    "Grabsch Hans-Peter (FV/FLP) *"  <Hans-Peter.Grabsch(at)DE.BOSCH.COM>
Date:    Thu, 22 Oct 1998 19:10:09 +0200

Dear Christian, dear list Christian wrote: >> What could from a perceptual viewpoint be regarded as an optimal = aspect >> ratio for a sonogram/spectrogram? Imagine the frequency axis scaled >> logarithmically, so should 1 octave (y-axis) correspond to 1000 ms >> (x-axis)? Or to 100 ms? Or to 10 ms? ... This topic is coming up again with the assessment of sounds with tonal components. Keywords are Fourier-Time-Transformation (FTT) and = Part-tone-time-pattern (PTTP).=20 Literature: Terhardt, E. Fourier Transformation of Time Signals: Conceptual Revision" Acustica 57, 242-256, (1985) Heinbach, W. Aurally adequat signal representation: The Part-Tone-Time-Pattern Acustica 67, 113-121, (1988) Heldmann, K. Wahrnehmung, geh=F6rgerechte Analyse und Merkmalsextraktion technischer Schalle VDI-Verlag, Fortschritt-Berichte, Reihe 17, Nr. 109, 1994 Vormann, M. and Daniel, P. Detection of tonal components with a model of spectral and virtual = pitch based on the Fourier-time-transformation (FTT) Inter-noise 96, 1531-1534, 1997 Daniel, P. et alt. Tonalness and Unpleasantness of Tire Sounds: Methods of Assessment and Psychoacoustical Modelling euro-noise, proceedings volume II, 627-632 Kind regards Hans-Peter Grabsch Hans-Peter Grabsch=20 Tel.: +(49) 711 811 7166 FAX: +(49) 711 811 266 082 E-Mail: Hans-Peter.Grabsch(at) Robert Bosch GmbH, Dep. FV/FLP P.O. BOX 10 60 50, 70049 Stuttgart, Germany Email to AUDITORY should now be sent to AUDITORY(at) LISTSERV commands should be sent to listserv(at) Information is available on the WEB at

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