Music – Instruments – Electrical musical tone generation
Reexamination Certificate
2008-03-24
2010-06-29
Warren, David S. (Department: 2832)
Music
Instruments
Electrical musical tone generation
C084S601000, C700S094000
Reexamination Certificate
active
07745714
ABSTRACT:
Provided is a recording or playback apparatus capable of separating a musical piece from an audio including the musical piece and a speech through a simple arithmetic process. A cut point detector detects, as a cut point, a time point at which an audio signal level or an amount of change in the audio signal level is not lower than a predetermined value. A frequency characteristic amount calculator calculates a characteristic amount in a frequency area of the audio signal only at each cut point and in its proximity. A cut point judging unit judges an attribute of the cut point on a basis of the calculated characteristic amount of the frequency. A music section detector detects a start and end points of each music section on a basis of the attribute and an interval between sampling points.
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Koga Tatsuo
Matsumoto Satoru
Yamamoto Yuji
Mots Law PLLC
Motsenbocker Marvin A.
Sanyo Electric Co,. Ltd.
Warren David S.
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