JPH0459895U - - Google Patents

Description

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing the overall circuit configuration of an electronic keyboard instrument to which the automatic accompaniment device according to the first embodiment of the present invention is applied, and FIG. 2 shows the accompaniment key range of the keyboard shown in FIG. FIG. 3 is a diagram showing an example of the arrangement of the bass keyboard area, and FIG. is R shown in Figure 2.
FIG. 5 is a diagram showing examples of accompaniment patterns stored in the OM, and FIG. 6 is a diagram showing pitch change tables stored in the ROM shown in FIG.
The figure shows an example of an accompaniment pattern that is generated as keys are pressed in the accompaniment and bass areas of the keyboard shown in Fig. 2. 8a to 8d are external views of the electronic keyboard instrument, and FIG. 9 is a flow chart for explaining the operation of the electronic keyboard instrument to which the automatic accompaniment device according to the first embodiment of the present invention is applied. A flow chart for explaining the chord conversion process, FIG. 10 is a diagram showing an example of the arrangement of the accompaniment key range and the bass key range of the keyboard in the second embodiment of the present invention, A diagram illustrating an example of an accompaniment pattern generated in response to key presses in the accompaniment key range and bass key range of the illustrated keyboard,
FIGS. 12a and 12b are flow charts for explaining the operation of an electronic keyboard instrument to which an automatic accompaniment device according to a second embodiment of the present invention is applied, and FIG. This is a flow chart for explaining the operation of an electronic keyboard instrument to which such an automatic accompaniment device is applied. 1... CPU, 2... ROM, 3... Keyboard, 4
...Switch group, 5...Sound source section, 6...D/A conversion section, 7...Amplifier, 8...Speaker.

Claims (1)

[Scope of Claim for Utility Model Registration] 1. Pitch specifying means comprising a plurality of arranged pitch operators for specifying the pitch of a musical tone to be generated; a first determining means for determining a chord type and a root note based on a reference chord type; a second determining means for determining a bass note in response to an operation of a pitch operator of the pitch specifying means; a reference chord type and a root note; Accompaniment pattern storage means for storing an accompaniment pattern consisting of a chord pattern expressed using a root note and a bass pattern accompanying the chord pattern; and a chord pattern of the accompaniment pattern stored in the accompaniment pattern storage means. a first converting means for converting the pitch of the accompaniment pattern and the bass pattern based on the chord type and root note determined by the first determining means; and a second converting means for converting the pitch of a bass pattern based on the bass note determined by the second determining means; and an accompaniment converted by the first converting means and the second converting means. An automatic accompaniment device comprising: accompaniment sound generation means for generating accompaniment sounds based on a pattern. 2. The pitch designation means each have independent first
and a second pitch manipulator region, and the first determining means is configured to perform an action on a plurality of pitch manipulators in the first pitch manipulator region. The chord type and root note are determined based on the operation performed on one pitch operator in the second pitch operator area, and the second determination means determines the chord type and root note based on the operation performed on one pitch operator in the second pitch operator area. 2. The automatic accompaniment device according to claim 1, wherein the automatic accompaniment device determines a sound. 3. The pitch specifying means has a first pitch manipulator area and a second pitch manipulator area occupying a predetermined area of the first pitch manipulator area;
The determination means determines a chord type and a root note based on operations performed on a plurality of pitch operators in the first pitch operator area including the second pitch operator area. , the second determining means determines a bass note based on the operation of the pitch operator when one pitch operator in the second pitch operator area is operated; 2. The bass note is determined based on the operation of the pitch operator indicating the lowest pitch when two or more pitch operators in the pitch operator area 2 are operated. automatic accompaniment device. 4. The pitch specifying means has a first pitch operator area and a second pitch operator area occupying a predetermined area of the first pitch operator area, and
The determining means determines a chord type and a root note based on operations performed on two or more pitch operators in the first pitch operator area including the second pitch operator area. 2. The second determining means determines the bass tone based on an operation performed on one pitch operator in the second pitch operator area. automatic accompaniment device.