Musical tone reproducing apparatus and method and portable...

Details Musical tone reproducing apparatus and method and portable... Musical tone reproducing apparatus and method and portable...

2006-09-05

2006-09-05

Donels, Jeffrey W (Department: 2837)

Music

Instruments

Electrical musical tone generation

Reexamination Certificate

active

07102070

ABSTRACT:
There is provided a musical tone reproducing apparatus which is capable of recovering proper timing of musical tone generation even in a situation where processing of events takes much time such that the sounding timing of musical tones is delayed. Duration data read out from a FIFO30are added together by a duration forward counter32b. A comparator circuit32dcompares the count value of an absolute time counter32cand the count value of the duration forward counter32b, and delivers the comparison result i to a FIFO controller3when the former becomes equal to or more than the latter. The FIFO controller31causes the FIFO30to read out event information and delivers the same to a decoder32a, which in turn converts the event information into tone generator control data having a format peculiar to a tone generator33and delivers the same data to a register write controller32e. The register write controller32ewrites an associated tone generator parameter into a tone generator control register within the tone generator33, and the tone generator33reproduces and outputs musical tones based on the tone generator parameter.

REFERENCES:
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patent: 1073034 (2001-01-01), None
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patent: 2000056759 (2000-02-01), None
patent: 2000-187483 (2000-07-01), None
patent: 2001-51678 (2001-02-01), None

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