PS262 Chapter Notes - Chapter 11: Sine Wave, Equal-Loudness Contour, Musical Tone
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600 hz, and so on: these additional tones are the higher harmonics of the tone. Thresholds and loudness: thresholds = the smallest amount of sound energy that can just barely be detected. Loudness = the pe(cid:396)(cid:272)ei(cid:448)ed i(cid:374)te(cid:374)sit(cid:455) of a sou(cid:374)d that (cid:396)a(cid:374)ges f(cid:396)o(cid:373) (cid:862)just audi(cid:271)le(cid:863) to (cid:862)(cid:448)e(cid:396)(cid:455) loud(cid:863) Ps262: week 8: this is illustrated by the audibility curve, audibility curve a curve that indicates the sound pressure level (spl) at threshold for frequencies across the audible spectrum. In addition to the increase in tone height that occurs as we move from the low to the high end of the piano keyboard, something else happens: the letters of the notes a, b, 110 hz, and so on-this doubling of frequency for each octave results in similar perceptual experiences) The effect of the missing fundamental has practical consequences: for example: what happens when you listen to someone talking to you on the telephone.
