Waveform-data dividing device

Details Waveform-data dividing device Waveform-data dividing device

1995-02-23

1999-08-10

Shoop, Jr., William M.

Music

Instruments

Electrical musical tone generation

84603, 84616, G10H 700

Patent

active

059361808

ABSTRACT:
A waveform-data dividing device, employed by an electronic musical instrument providing a waveform memory, is used to automatically divide waveform data into registers. The device provides a division-data table in which a plurality of division data are respectively written at locations which are arranged in connection with the registers. When a new waveform is inputted so that corresponding new waveform data are stored in the waveform memory, one division data is created based on the waveform data and is written into the division-data table at the location which is determined responsive to a pitch of the waveform data. Herein, one new waveform is divided into multiple sections so that detection of pitch is performed with respect to each of the sections. When the same pitch is detected with respect to two consecutive sections, that pitch is used as the pitch representing the waveform data as a whole. If the location of the division-data table corresponding to the pitch of the new waveform has been already occupied by another waveform, the other waveform is changed with the new waveform. Further, a manner of waveform division, illustrating multiple registers into which multiple waveforms are respectively divided, is visually displayed on a screen of a visual display unit. If an operator designates one register whose waveform should be changed, at least one candidate waveform is automatically indicated so that the waveform of the register designated is changed with the candidate waveform selected by the operator.

REFERENCES:
patent: 4461199 (1984-07-01), Hiyoshi et al.
patent: 4584921 (1986-04-01), Wachi
patent: 4991484 (1991-02-01), Kawashima
patent: 5038658 (1991-08-01), Tsuruta et al.
patent: 5298675 (1994-03-01), Nishimoto et al.
patent: 5361673 (1994-11-01), Kira et al.
patent: 5446237 (1995-08-01), Abe et al.
patent: 5521322 (1996-05-01), Morikawa et al.

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