Thesis (Ph. D.)--Ohio State University, 2007. / Title from first page of PDF file. Includes bibliographical references (p. 117-120).

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A study of pitch learning must outline first the procedures involved in such learning and then identify specific factors appearing to influence the learning of pitch. Once identified, each factor can then be evaluated by controlled experiment before confirming its influence. Since it is what is heard and perceived that is learnt, I have started with the process of Hearing and Perceiving, for as Arnold Abramovitz, Senior Lecturer in Psychology at Cape Town says, “the reception, processing and interpretation of acoustic symbols constitutes some of the most elusive and complex phenomena to attempt to examine, gauge and measure, due partly to the transient, ephemeral nature of sound itself.”

From introduction: A study of pitch learning must outlina first the procedures involved in such learning ar~d then identify specific factors appearing to influence the learning of pitch. Once identified, each factor can then be evaluated by controlled experiment before confirming its influence. Since it is \'lhat is heard and perceived that is learnt, I have started with the process of Hearing and Perceiving, for as Arnold Abramovitz, Senior Lecturer in Psychology at Cape Town says, "the reception, processing and interpretation of acoustic symbols constitutes some of the most elusive and complex phenomena to attempt to examine, gauge and measure, due partly to the transient, ephemeral nature of sound itself."

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The purpose of this study is to show how standards of pitch became a matter of importance in musical performance. The existence of innumerable varieties of pitches was not an actual handicap in a time when voices were accompanied by only one instrument, or when a singer accompanied himself. But when instruments began to be used with the church organ, and ensembles were formed to play in the royal courts, a standard pitch was found to be desirable. Many factors were involved in the adjustments of pitch as small ensembles evolved into the military band and the symphony orchestra. An attempt will be made to show how many of the standards were derived, and what long lasting effects they had.

Precise pitch is important to musicians. We created algorithms for real-time pitch detection that generalise well over a range of single �voiced� musical instruments. A high pitch detection accuracy is achieved whilst maintaining a fast response using a special normalisation of the autocorrelation (SNAC) function and its windowed version, WSNAC. Incremental versions of these functions provide pitch values updated at every input sample. A robust octave detection is achieved through a modified cepstrum, utilising properties of human pitch perception and putting the pitch of the current frame within the context of its full note duration. The algorithms have been tested thoroughly both with synthetic waveforms and sounds from real instruments. A method for detecting note changes using only pitch is also presented. Furthermore, we describe a real-time method to determine vibrato parameters - higher level information of pitch variations, including the envelopes of vibrato speed, height, phase and centre offset. Some novel ways of visualising the pitch and vibrato information are presented. Our project �Tartini� provides music students, teachers, performers and researchers with new visual tools to help them learn their art, refine their technique and advance their fields.

Thesis (Ph. D.)--Open University. BLDSC no. DX202835. / 2 volumes.