Music – Instruments – Electrical musical tone generation
Reexamination Certificate
2006-04-18
2009-11-03
Warren, David S. (Department: 2837)
Music
Instruments
Electrical musical tone generation
C084S611000, C084S651000
Reexamination Certificate
active
07612275
ABSTRACT:
An apparatus for providing a beat and tatum tracker includes an accent filter bank, a periodicity estimator, a period estimator and a phase estimator. The accent filter bank is configured to downsample an input audio signal. The periodicity estimator is configured to determine a periodicity based on the downsampled signal. The period estimator is configured to determine a period based on the periodicity. The phase estimator is configured to estimate a phase based on the period for determining beat and tatum times of the input audio signal.
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Eronen Antti
Hiipakka Jarmo
Seppänen Jarno
Alston & Bird LLP
Nokia Corporation
Warren David S.
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