JP2003177749A - Apparatus for playing music to step - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an apparatus that controls the speed of music to the rhythm of running. <P>SOLUTION: With the apparatus data of steps when a person is running is measured by a signal inputting device worn by the person, and the adequate speed of music is calculated from the interval of the signals, and by adjusting the speed of the music to the speed of steps with an MIDI music reproducing apparatus which can vary the speed of reproduction, the state of running to the music can be maintained even when the running rhythm changes. By using this, the user can keep running to the music in the rhythm just as he/she likes. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a music speed control device for enjoying exercise.

[0002]

2. Description of the Related Art There are stereos with a volume that smoothly changes the playback speed of music. Running counters are also commonly used. Also, it is well known that you can run for a long time without getting tired when you run along with music.

[0003]

[Problems to be Solved by the Invention] When running or walking in tune with music, it is possible to continue exercising joyfully, but there are problems such as not having just the right rhythm and being unable to keep up when tired.
Therefore, I want to create a device that controls the speed of the music so that I can feel as if I'm running along with the music, even if I'm running at the rhythm I want to run, so that I can continue to exercise more comfortably.

[0004]

In order to solve the above-mentioned problems, in the present invention, the data of the step when running is measured by a signal input device attached to the body, and an appropriate music speed is calculated from the interval. By calculating, and adjusting the music to the steps by the music playback device that can change the speed, it was possible to keep the running condition according to the music even if the running rhythm changed.

Specifically, a signal input device for measuring and inputting step data by running or walking,
A music speed control device is proposed, which includes a calculation device that calculates and outputs the speed of music to be reproduced from the signal interval, and a music reproduction device that can be changed according to the speed.

Here, MID is used as music data to be reproduced.
If you use the one written as I music program, you can change the music speed easily.

Further, in the above computing device, if incorrect data is excluded from the signal input to the signal input device, and the speed of music to be reproduced is determined and output from the remaining rhythm, detection error will occur. Also, it is possible to eliminate errors such as a step being disturbed to avoid an object. Further, by limiting the reproduction speed of the music to some, it is possible to eliminate the continuous increase or decrease of the speed and the vibration.

With the above-described design, according to the present invention, if the user starts to run at a desired rhythm, the music starts flowing at a suitable tempo, and even if the pitch is good and the pitch is raised, on the contrary, Even if you are tired and change your walking style, the speed of the music changes smoothly, and you can feel that you are always moving in time with the music, and you can comfortably continue exercising for a long time.

[0007]

BEST MODE FOR CARRYING OUT THE INVENTION The music information to be prepared is written in MIDI, and information indicating the head of a bar is incorporated every four beats in advance in four beats. There are eight steps per measure when running to music.

Since the MIDI music information specifies which tone color occurs at which height at which time, it is possible to extend or contract only the rhythm without changing the pitch or tone color by operating only the time. You can

When the switch is turned on, the signal input device starts measuring the step interval. The information is sent to the calculation device in real time, speed information to be adopted in the next measure is calculated and sent to the music playback device. If 8 consecutive steps are input within 5 seconds in total, the calculation is started with the next step as the 0th step. The length I (unit: second) of one measure is calculated as follows from the average of the intervals between steps 0 to 12. First, in order to eliminate inappropriate data, the intervals of each step are arranged in ascending order, two from the shortest one and two from the longest one are selected, discarded, and the length of the remaining eight sections is added to I. . Playback starts at a speed closest to I for the length of one bar.

Suppose the music started at I = 2. Steps are not calculated for measures that include the point at which you started playing or when you changed the speed. This is because a person intentionally shifts the steps in an attempt to tune with the music, so that it does not affect the speed of the music. Restart step measurement from the next measure. Each n (n = 0, 1, 2,
...), the average I (n) (unit is second) of the interval from the 8nth step to the 8 (n + 1) th step is calculated as follows. First, to eliminate inappropriate data,
Of the intervals of each step, up to three intervals that are extremely far apart (for example, 20% or more) from the speed currently adopted,
If not, select the shortest one and the longest one by one, remove them, and multiply the average of the remaining step intervals by 8 to obtain I (n). By doing this, it is possible to avoid steps that are too weak to be detected, that the senses are disturbed when trying to avoid obstacles, and that the speed changes due to half a step to match the music. it can.

Only when the employed speed and the detected average speed of the steps are separated by a certain amount or more, the speed of the music is changed so as to reduce the difference by some percentage. For example, if the speed adopted at a certain time is I, | I
Only when the maximum integer j satisfying (n) -I |> 3j / 64 is 1 or more, the music is brought to a new speed of 2j / 64, that is, about 2/3 of the difference. With this design, small changes do not change the music, but only when you intentionally run faster or slow down, you can change the music accordingly.

According to the above rules, the speed adopted in the next measure can be calculated, and the music speed can be smoothly converted without being affected by a small error.

If the reproduction speed of music is kept closely matched to the rhythm of the measured step, the speed becomes sluggish and the speed vibrates. By limiting the playback speed in advance to a discrete number of steps (1/32 second step in the above example), continuous change in speed can be avoided, and the above problem can be solved.

[0014]

EFFECTS OF THE INVENTION By using the present invention, if you start to run at the rhythm you want to run, the music will flow out at a perfect tempo to match it, and you will be in good condition and raise the pitch, but on the contrary, you will get tired and you can walk again. And, the speed of the music changes smoothly in accordance with it, and it is always felt as if it is moving in tune with the music, and you can comfortably continue exercising for a long time. For this reason, you can continue to run along with the music while running at your desired pitch.

Claims (5)

[Claims] 1. A signal input device for measuring and inputting step data by running or walking, and a calculating device for calculating and outputting the speed of music to be reproduced from the interval of the signal.
A music speed control device having a music reproducing device that can be changed according to the speed. 2. A signal input device for inputting a desired rhythm from the outside, a calculation device for determining a music reproduction speed according to the data, and a performance means for reproducing and outputting music at a reproduction speed based on its output. A music speed control device comprising: the calculation device for eliminating inappropriate data from a signal input to the signal input device, determining a speed of music to be reproduced from the remaining rhythm, and outputting the music speed. Music speed control device characterized by. 3. The music speed control device according to claim 1, wherein the calculation device excludes inappropriate data from the signal input to the signal input device, and reproduces the music to be reproduced from the remaining rhythm. A music speed control device characterized by determining and outputting a speed. 4. The music speed control device according to claim 1, wherein the music data to be reproduced is MIDI (Mus.
ical Instrument Digital I
A music speed control device characterized by using a program written as a music program. 5. The music speed control device according to claim 1, 2, 3 or 4, wherein the speed of music is continuously increased or decreased by limiting the reproduction speed of music to some. A music speed control device characterized by eliminating vibration.