| Summary: | 碩士 === 國立交通大學 === 工學院聲音與音樂創意科技碩士學位學程 === 98 === This study provides a number musical notation system which can be used to convert MIDI files to number musical notation. Writing music in number musical notation can be easily stored and transported electronically, which enables the understanding of music for with less music knowledge. The following analysis and tracking technologies and rule theories were integrated in number musical notation system:
1. Pitch spelling: An in-situ technology of pitch spelling was used.
2. Key finding: A spiral array model also was used to optimize the tonality of music.
3. Beats tracking and rhythm induction: This study adopted a process from the analysis of beats weights and duration to rhythm induction.
4. Chord identification: The center of effect in spiral array model was utilized to identify the chord of music.
5. Rule theories: Some rule theories were also integrated in this system, such as number musical notation rule, beat basic framework, tonality transfer, tonality and chord marking rule for pop music.
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Based on the integration of pitch spelling, tonality analysis, beats tracking and chord identification, number musical notation system can analyze the MIDI files without complete information, such as the files recorded from audio recorders or converted from WAV files, to find correct note events and the characteristics of music in MIDI files, hence get the optimized results.
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