Musical tone generation apparatus using high-speed bus for data

Details Musical tone generation apparatus using high-speed bus for data Musical tone generation apparatus using high-speed bus for data

1997-06-25

1999-04-06

Witkowski, Stanley J.

Music

Instruments

Electrical musical tone generation

84607, G10H 704, G10H 712

Patent

active

058921702

ABSTRACT:
A musical tone generation apparatus creates musical-tone-waveform samples based on waveform samples stored in a waveform memory by each sampling period. Herein, a high-speed bus such as a PCI bus is provided for data transfer with regard to the waveform memory. A waveform buffer is provided to temporarily and selectively store the waveform samples which are read from the waveform memory. A sound source operates in accordance with time-division-channel timings which are provided by dividing a sampling period by a number of channels. The sound source performs interpolation calculations on the waveform samples of the waveform buffer to create a musical-tone-waveform sample in accordance with each time-division-channel timing with respect to each channel. The apparatus generates a read address whose value is changed in response to a pitch of a musical tone. When the waveform buffer does not store the waveform samples which are necessary to create the musical-tone-waveform sample, the apparatus accesses the waveform memory in accordance with the read address to read out the waveform samples, which are then transferred to the waveform buffer via the high-speed bus. Herein, burst reading operations are performed on the waveform memory, regardless of the time-division-channel timing. Thus, it is possible to reduce an occupancy time of the high-speed bus by the sound source as well as a number of times to access the waveform memory.

REFERENCES:
patent: 4901615 (1990-02-01), Matsushima et al.
patent: 5290965 (1994-03-01), Yoshida et al.
patent: 5386529 (1995-01-01), Kondo
patent: 5525748 (1996-06-01), Kuribayashi et al.
patent: 5567901 (1996-10-01), Gibson et al.

Affiliated with

Also associated with

Rating

Musical tone generation apparatus using high-speed bus for data 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 generation apparatus using high-speed bus for data , we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Musical tone generation apparatus using high-speed bus for data will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1373313