Turning on a tone.
It is possible to choose the starting phase of a pure tone in a way that minimizes the onset noise when the tone is turned on abruptly. A spectral model shows that when the tone has a low frequency, minimum onset noise is expected for a starting phase of zero (turning on a sine tone) but when the tone has a high frequency, minimum onset noise is expected for a starting phase of +/- 90 deg (turning on a cosine tone). Listening experiments confirm the above expectations and show that the transition between low- and high-frequency domains is sharp and depends upon both the electroacoustical transducer and the individual listener.
Department of Physics and Astronomy, Michigan State University, East Lansing 48824.
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D000328:Adult; D001288:Attention; D005260:Female; D006801:Humans; D008144:Loudness Perception; D008297:Male; D008875:Middle Aged; D010897:Pitch Discrimination; D011571:Psychoacoustics; D013018:Sound Spectrography