JPS6224316Y2 - - Google Patents

Description

[Detailed Description of the Invention] This invention relates to an automatic performance baton that supplies a control signal for reading preset musical pieces from a memory and performing them.

Since conventional programmable automatic performance devices automatically play music according to a predetermined tempo clock and volume, the output musical sounds are monotonous and lack interest.

Therefore, even as a performer, he is unable to incorporate his own unique emotions into the performance of the music, and the performance feels like operating a machine.

This invention was made in view of the above circumstances, and an object of the present invention is to provide an automatic performance baton that reads out and plays preset musical pieces.

This invention will be explained in detail below based on the illustrated embodiments. In the figure, reference numeral 1 indicates a baton having a structure as described in detail below. That is, the baton body 1 is hollow inside and is equipped with a weight 2 that can be moved in the longitudinal direction (the weight 2 acts as a moving element), and tension coil springs are attached to both ends of the weight 2. One of the coil springs 3, 3 is connected and fixed to an internally fixed bracket 4, and the other is connected to a magnet 8a on the Hall element 5 side.

Therefore, when the weight 2 moves within the baton body 1, the Hall element 5 changes the output voltage as shown in FIG. 3 due to a change in magnetic flux density due to a change in the position of the magnet 5a.

Therefore, when swinging the baton body 1, a large acceleration acts on the baton body at the beginning and end of the swing, the weight 2 moves within the baton body 1, and the output voltage of the Hall element 5 changes at every beat. changes significantly. The above output voltage is differentiated by a CR differentiation circuit 6 shown in FIG. The signal obtained via the converter 7 is processed by a processing circuit 8 such as a logic circuit or a known microprocessor at a rate of 100 m·sec to
It is divided into frame sections of several hundred m·sec, and the timing of each peak level and the absolute value and polarity of the level at that time are detected. Then, the detected value of each frame section is compared with the detected value of the previous frame section, and only when the peak is larger than the previous frame,
Make sure that the output is sent to the next stage. Further, the signal corresponding to the acceleration of the weight 2 inside the baton body to be detected is limited to the + side, and one side is discarded. This corresponds to the playing style and also prevents chattering due to vibration of the springs 3, 3. What is output from the processing circuit 8 are peak level data and a peak timing signal, and the peak timing signal is given to a tempo clock generator 9, which outputs a tempo clock to produce a desired piece of music. It is applied to a preset automatic performance memory 10 (consisting of RAM, etc.). However, in this case, the movement of the baton body 1 is basically one beat at a time, and the peak timing signal also corresponds to this, so when performing, perform a practice swing in advance and generate the peak timing signal. Then, give this to the tempo clock generator 9, and use the initial signal of the tempo clock as
This is a read command for the automatic performance memory 10. In other words, the tempo obtained by practice swinging is detected in advance, and then the control unit is used to start the performance, the cycle of the previous beat is memorized, and the cycle of the next beat is predicted using that value. However, the tempo clock generating section 9 includes means for creating minute clocks such as 1/4 beat and 1/8 beat based on the expected tempo. As is well known, the automatic performance memory 10 sequentially supplies the stored information of the music piece selected under the control of the control switch 11 to the musical tone generator 12 according to the tempo clock, and is decoded as a signal of a predetermined pitch and timbre. . In this case, a gate signal is supplied from the control switch 11 to the musical tone generating section 12. A musical tone signal is supplied from the musical tone generation section 12 to the volume control section 13, and since the volume control section 13 is supplied with peak level data from the processing circuit 8, the musical tone signal includes data indicating changes in volume. The signal is added, and the resulting signal is provided to the acoustic transducer 14. The acoustic conversion section 14 converts the applied digital signal into an analog signal, and provides the output to the speaker 15.

In the above embodiment, the weight 2 and the magnet 5a interlocked therewith are used as the moving element, and the Hall element 5 is used as the acceleration sensor, and this is detected by magnetic velocity density change, but other electric fields or mechanical to electrical conversion are used. Of course, other motion elements or sensors using a device (such as a load cell) may also be used.

As described in detail above, this invention provides a conductor's baton body with a sensor means for detecting at least one of the operation timing or the amount of movement of a movement element provided in the body, and receives a predetermined electrical signal from the sensor means. Accordingly, the structure is configured to read music data and instruct the speed or speed of the performance tempo, so it is possible to freely determine the speed or speed of the performance tempo according to the swing operation state of the conductor's baton. This can be fully reflected in the speed of the performance tempo.

[Brief explanation of the drawing]

Fig. 1 is a partially cutaway perspective view of a baton showing an embodiment of this invention, Fig. 2 is a control block diagram of this invention, and Fig. 3 is a diagram showing the relationship between the operation of the baton and the output voltage. It is. 1... Conductor's baton body, 2... Weight, 5a... Magnet, 5... Hall element.

Claims (1)

[Scope of Claim for Utility Model Registration] (1) A conductor's baton that is oscillated in order to read music data that has been stored and set in advance and instruct the speed and speed of the performance. detects a movement element that is moved by the movement element and at least one of the movement timing or movement amount of the movement movement of the movement element, generates a corresponding electric signal, and reads and plays the music data in accordance with this electric signal. A baton for automatic performance, characterized in that it is equipped with a sensor means for instructing the slowing or slowing of the tempo. (2) The baton for automatic performance according to claim 1, wherein the sensor means comprises an acceleration sensor that detects the acceleration of the motion element.