Music – Instruments – Electrical musical tone generation
Reexamination Certificate
2007-06-26
2007-06-26
Fletcher, Marlon (Department: 2837)
Music
Instruments
Electrical musical tone generation
C084S602000, C084S610000, C084S622000
Reexamination Certificate
active
10722254
ABSTRACT:
There is provided a musical tone reproducing apparatus, which stores tone color parameters in a general-purpose storage means, to thereby shorten the time taken for a tone color changing process. A CPU10registers a tone color parameter group that has been read out from a RAM11in a tone generator memory30, which is a general-purpose memory, in advance. The tone color parameters required when a tone generation core33carries out musical tone reproduction are stored in a cache memory32for all channels. Upon the CPU10giving a tone color changing command to a controller31, a specified tone color parameter is read out from the tone generator memory30. The tone color parameter for a specified channel in the cache memory32is then rewritten with the read out tone color parameter. The tone generation core33reads out from the cache memory32the rewritten tone color parameter set for each channel, and hence musical tone reproduction with a changed tone color is carried out. Because a tone color parameter group of a freely chosen number of tone color parameters has been registered in the tone generator memory30, the need to transfer a tone color parameter from the CPU10to the tone generator memory30each time a tone color is to be changed can be removed as much as possible. Moreover, the output bit width of the cache memory32is made to be large, and hence the tone color parameter the tone color parameter can be set into the tone generator means instantaneously. Consequently, even though the tone color parameters are stored in advance in the general-purpose storage means, the time taken for the tone color changing process can be shortened, and hence the occurrence of a break in sound generation during tone color changing can be prevented.
REFERENCES:
patent: 5489746 (1996-02-01), Suzuki et al.
patent: 5698802 (1997-12-01), Kamiya
patent: 5850051 (1998-12-01), Machover et al.
patent: 5895449 (1999-04-01), Nakajima et al.
patent: 5981859 (1999-11-01), Suzuki
patent: 6184454 (2001-02-01), Imai et al.
patent: 6570082 (2003-05-01), Mukaino et al.
patent: 2003/0110928 (2003-06-01), Yamaki et al.
patent: 2004/0069120 (2004-04-01), Muraki
patent: 2004/0069124 (2004-04-01), Murakai et al.
patent: 08-335084 (1996-12-01), None
patent: 11312085 (1999-11-01), None
patent: 2000-276172 (2000-10-01), None
patent: 2002-276172 (2000-10-01), None
Korean Patent Office, Office Action, (Jul. 26, 2005).
Fletcher Marlon
Yamaha Corporation
LandOfFree
Musical tone reproducing apparatus and portable terminal... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Musical tone reproducing apparatus and portable terminal..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Musical tone reproducing apparatus and portable terminal... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3860306