JP4069601B2 - Music playback device and method for controlling music playback device - Google Patents

Music playback device and method for controlling music playback device Download PDF

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JP4069601B2
JP4069601B2 JP2001271583A JP2001271583A JP4069601B2 JP 4069601 B2 JP4069601 B2 JP 4069601B2 JP 2001271583 A JP2001271583 A JP 2001271583A JP 2001271583 A JP2001271583 A JP 2001271583A JP 4069601 B2 JP4069601 B2 JP 4069601B2
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Prior art keywords
music
tempo
walking pitch
music tempo
data
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JP2003085888A (en
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隆昭 中村
仁 大久保
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ソニー株式会社
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Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a music playback device and a music playback method that can control a music tempo.
[0002]
[Prior art]
Play music recorded on CDs (Compact Discs), MDs (Mini Discs), cassette tapes, and other recording media, and play music data recorded in MP3 (MPEG-1 Audio Layer-III) and other formats. Some portable music playback devices (hereinafter referred to as music playback devices) play back recorded music at the same speed as when recording, and there are also music playback devices whose playback speed is variable.
[0003]
As an example of a music playback device in which the music playback speed is variable, there is a music output device disclosed in Japanese Patent Laid-Open No. 6-342282. In this technique, a technique for outputting recorded sounds one by one at a rhythm or tempo according to a user's movement is disclosed. According to this technology, for example, sound can be output as the user walks.
[0004]
[Problems to be solved by the invention]
By the way, a user of a music playback device may listen to music played by the music playback device while walking. In this case, while the music to be played has a unique music tempo, there is a unique walking pitch for each pedestrian who is a user, and there is a rhythm unique to each pedestrian. Therefore, when the music tempo reproduced by the music reproducing apparatus is different from the user's walking pitch or when the walking speed changes, it is possible that a sense of unity between walking and music cannot be obtained. If such a difference between the user's walking pitch and the music tempo of the music reproduced by the music reproducing apparatus can be eliminated, a better sense of unity with the music can be obtained for the user who is a pedestrian. become.
[0005]
Therefore, an object of the present invention is to change the music tempo of reproduced music in accordance with the user's walking pitch so that a sense of unity between the user's movement and music can be obtained.
[0006]
[Means for Solving the Problems]
The present invention that achieves the above object provides a music reproducing apparatus configured as follows. This music playback apparatus includes a walking pitch detection unit that detects a walking pitch from a pedestrian's movement, a music tempo detection unit that detects a music tempo from music data, and a walking pitch and a music tempo detected by the walking pitch detection unit. A music tempo determination unit for determining a new music tempo from the music tempo detected by the detection unit, a music playback unit for playing music, and a music playback unit according to the new music tempo determined by the music tempo determination unit A music playback speed control section for controlling the music playback speed.
In the music playback device of the present invention, instead of outputting a sound one step at a time, the original music tempo is detected, and the original music tempo, that is, within the range where the musicality is not impaired, is set to the walking pitch. In addition, the music data can be reproduced by changing the music tempo.
[0007]
Here, the music playback apparatus further includes a music tempo fine adjustment input unit that accepts a fine adjustment input from the outside by the user, and adjusts the new music tempo determined by the music tempo determination unit. In this way, the user can finely adjust the music tempo determined by the music tempo determination unit. The walking pitch detection unit detects a pedestrian's walking pitch based on a change in potential generated by the walking of the pedestrian and outputs a signal synchronized with the walking pitch to the music tempo determination unit. Determines a new music tempo based on this signal. Further, the music playback unit reads and temporarily stores the music data, and changes the music tempo of the stored music data for playback under the control of the music playback speed control unit. In this way, it is possible to expand or shorten the music data read in advance so that the pitch does not change due to a change in the playback speed. In addition, the music tempo determination unit changes the music tempo so that either one of the walking pitch and the music tempo is an integer multiple of 2 of the other. Thus, if the music tempo is an integral multiple of 2 of the walking pitch, music can be listened to without feeling uncomfortable between the walking pitch and the music tempo.
[0008]
In addition, the present invention provides a music playback device configured as follows. This music playback device changes the music tempo so that either one of the walking pitch and the music data tempo of the music data is an integral multiple of the other, the detecting means for detecting the walking pitch of the pedestrian. Playback means for playing back music data at the set music tempo. This music playback device can play back music data at a music tempo that matches the walking pitch. Here, the reproduction means may change the music tempo so that either one of the walking pitch and the music tempo is an integer power of 2 and reproduce the music data at the changed music tempo. it can. Thus, if the music tempo is an integral multiple of 2 of the walking pitch, music can be listened to without feeling uncomfortable between the walking pitch and the music tempo.
[0009]
Furthermore, the present invention can provide a method for controlling a music playback device, which is configured as follows. The method for controlling the music playback device includes a step of taking in a data value of a walking pitch of a pedestrian carrying the music playback device, a step of taking in a data value of a music tempo read by the music playback device, and data on a walking pitch. Adjusting the data value of the music tempo based on the value, and changing the playback speed of the music data according to the adjusted data value of the music tempo. Thus, the method for controlling the music playback device of the present invention is characterized in that the music tempo is matched to the walking pitch.
[0010]
Here, in the control method of the music playback device, when the ratio between the data value of the walking pitch and the data of the music tempo is equal to or greater than a certain value, the ratio between the data value of the walking pitch and the data value of the music tempo is within a certain value. Thus, the step of changing the data value of the walking pitch and the step of changing the reproduction speed of the music data based on the changed data value of the walking pitch are included. For example, if the walking pitch data value is W and the music tempo data value is M, the ratio (W / M) of these values can be considered as this difference. Here, in the step of changing the data value of the walking pitch, the data value of the walking pitch is multiplied by an integer or divided by an integer. Furthermore, the step of changing the data value of the walking pitch multiplies the data value of the walking pitch by an integer power of 2 or divides by a power of 2 multiplied by an integer. In this way, the walking pitch and the music tempo can be matched with no sense of incongruity, and the music data can be reproduced without impairing the music atmosphere.
[0011]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, the present invention will be described in detail based on the embodiments shown in the accompanying drawings.
FIG. 1 is a block diagram showing a functional configuration of the music playback device according to the present embodiment.
As shown in FIG. 1, the music playback device in the present embodiment includes a walking pitch detection unit 10, a music tempo detection unit 20, a music playback unit 30, a music tempo determination unit 40, and a music playback speed control unit. 50 and a music tempo fine adjustment input unit 60, and each block is connected as necessary.
[0012]
The walking pitch detection unit 10 outputs a signal synchronized with the user's walking pitch (hereinafter, this signal is also simply referred to as a walking pitch). This walking pitch may be a signal detected corresponding to each step of the user's walking, or may output the number of steps per second or per minute as the walking pitch. As the walking pitch detector 10, a vibration sensor used in a pedometer or the like described in FIG. 3 or a signal synchronized with the walking pitch of the user step by step as described in FIG. It is also possible to use a device that outputs based on the above. A specific configuration example of the walking pitch detection unit 10 will be described later.
[0013]
By the way, the user's walking pitch detected by the walking pitch detector 10 is not always kept constant, but changes from moment to moment. Therefore, the walking pitch detection unit 10 can detect a signal synchronized with the walking pitch of the user step by step, and output the number of steps in a certain time (per second or per minute) as the walking pitch. Also, the walking pitch averaged by averaging means such as moving average and exponential average can be output. The obtained walking pitch can be output from the walking pitch detection unit 10 to the music tempo determination unit 40 when the power of the music player is ON.
[0014]
Further, if a storage unit is provided in the walking pitch detection unit 10, the detected walking pitch can be stored in the storage unit when the power of the music playback device is OFF. In this way, when the power of the music playback device is turned on next time, the value stored in the storage means can be output to the music tempo determination unit 40 as the initial value of the walking pitch. Note that the initial value of the walking pitch detected by the walking pitch detection unit 10 may be stored in the music tempo determination unit 40 instead of being stored in the storage means inside the walking pitch detection unit 10.
[0015]
The music tempo detection unit 20 outputs a signal synchronized with the time signature of music (hereinafter referred to as music tempo) recorded on a recording medium such as a CD, MD, or cassette tape (hereinafter simply referred to as music tempo). Also shown). In order to detect the music tempo, the music data needs to be read out from the recording medium. However, the music data may be read out independently by the music tempo detection unit 20 or the music data read out by the music playback unit 30 described later is used. May be. As the music tempo detection unit 20, an existing time signature detection device can be used. The music tempo played by the music playback device is about 30 to 120 beats / minute.
[0016]
By the way, the music tempo detected by the music tempo detection unit 20 (that is, the tempo of the music to be played back) is not necessarily constant, and may vary depending on the music or between music. Therefore, the music tempo detection unit 20 can output the number of beats detected in a certain time as the music tempo. Also, the music tempo value averaged by averaging means such as addition average and exponential average can be output from the music tempo detection unit 20 to the music tempo determination unit 40.
[0017]
If a storage means is provided in the music tempo detection unit 20, the obtained music tempo value can be stored in the storage means when the power of the music playback device is OFF. In this way, when the power of the music playback device is turned on next time, the value stored in the storage means can be output to the music tempo determination unit 40 as the initial value of the music tempo. The initial value of the music tempo may be stored in the music tempo determination unit 40 instead of being stored in the storage means inside the music tempo detection unit 20.
[0018]
The music reproducing unit 30 reads out and reproduces music data from a recording medium storing the music data. Further, the music playback unit 30 in the present embodiment can change the music playback speed in accordance with the control of the music playback speed control unit 50 described later. In the case of music data recorded as digital data such as MP3, the music playback speed can be changed by simply extending or shortening the playback time of each sound.
The music playback unit 30 includes media driving means and data reading means. The data reading means reads music data stored on the recording medium by optical means or magnetic means. The medium driving means includes a mechanism for rotating a recording medium such as a CD or MD or winding a recording medium such as a cassette tape in order to read data by the data reading means. The speed of music played back by the music playback unit 30 can also be changed as appropriate by changing the drive speed of the media drive means. By the way, when the music playback speed is changed by changing the driving speed with a cassette tape or the like, the pitch output from the music playback apparatus changes. Therefore, a device is required to prevent the user from feeling uncomfortable about the pitch output from the music playback device. For example, the music playback unit 30 is provided with a mechanism such as a shock proof that reads music first and stores it in a storage means such as a memory, etc. It can be kept unchanged. It is also possible to provide a mechanism for automatically correcting the pitch based on the amount of change in the playback speed.
[0019]
The music tempo determination unit 40 compares the walking pitch detected by the walking pitch detection unit 10 with the music tempo detected by the music tempo detection unit 20, and the relationship between the walking pitch and the music tempo is The music tempo is changed so as to be an integer multiple of one another. The new music tempo M ′ after the change is sent to the music playback speed control unit 50. Here, if the detected walking pitch is W and the music tempo is M, the relationship between the walking pitch W and the music tempo M is expressed as shown in Equation 1.
[0020]
[Expression 1]
[0021]
When the relationship shown in Equation 1 is established between the walking pitch W and the music tempo M, the music tempo M is adjusted according to the walking pitch W. That is, the new music tempo M ′ after the change is expressed as shown in Equation 2.
[0022]
[Expression 2]
[0023]
Now, a case where the relationship shown in Equation 1 is not established between the walking pitch W and the music tempo M will be described. As a case where the relationship shown in Equation 1 does not hold, there is a case as shown in Equation 3.
[Equation 3]
[0024]
In such a case, the value of the walking pitch W is doubled. In other words, if the new walking pitch is W ′, W ′ such that W ′ becomes 2 W is given to W in Formula 1. Then, Equation 1 is evaluated again. Here, when this evaluation is satisfied and the relationship of Equation 1 is established, a new music tempo M ′ is obtained as shown in Equation 2. Here, the new music tempo M 'is W', that is, 2W. The new music tempo M ′ after the change is sent to the music playback speed control unit 50.
If the relationship of Equation 1 does not hold even if the value of walking pitch W is doubled, the new walking pitch W ′ is further doubled and such calculation is repeated until the relationship of Equation 1 is established. Do it. Ie 2nAn operation of double (n is an integer) is performed.
[0025]
Moreover, as a case where the relationship shown in Equation 1 does not hold, there is a case shown in Equation 4 in addition to the case shown in Equation 3.
[0026]
[Expression 4]
[0027]
In such a case, the value of the walking pitch W is 0.5 times, that is, 2-1Double. In other words, if the new walking pitch is W ′, W ′ such that W ′ is 0.5 W is given to W in Formula 1. Then, Equation 1 is evaluated again. Here, when this evaluation is satisfied and the relationship of Equation 1 is established, a new music tempo M ′ is obtained as shown in Equation 2. Here, the new music tempo M ′ is W ′, that is, 0.5 W. The new music tempo M ′ after the change is sent to the music playback speed control unit 50.
Even if the value of the walking pitch W is increased by 0.5, if the relationship of Equation 1 is not established, the new walking pitch W ′ is further multiplied by 0.5, and this calculation is performed so that the relationship of Equation 1 is established. Repeat until. Ie 2-nAn operation of double (n is an integer) is performed.
[0028]
As described above, in the present embodiment, the walking pitch W and the music tempo M are set so that the user who walks while listening to the music reproduced by the music reproducing device can obtain a sense of unity with the reproduced music. The music tempo M is changed so that the relationship becomes an integral multiple of one of them, and a new music tempo M ′ is determined.
[0029]
In the description of the determination of the music tempo in the present embodiment, the walking pitch is increased or decreased exponentially, such as 2 times, 4 times, 8 times, or 1/2 times, 1/4 times, or 1/8 times. Ie 2± nWe have explained the case of double (n is an integer), but even numbers such as 2 times, 4 times, 6 times and 8 times, and integer times such as 2 times, 3 times, 4 times and 5 times You may make it do.
[0030]
Also, the music tempo changes within the range of (√0.5) to (√2) times compared to the original music tempo, so that it becomes the same as the walking pitch, or doubled or quadrupled. , 8 times an integer power of 2, or 1/2 times, 1/4 times, or 1/8 times an integer power of 2. Thereby, when a user walks while reproducing music, the user can listen to the music without a sense of incongruity.
For example, if you are jogging while listening to a music with an up-tempo music tempo of 4 beats, if the walking pitch is 0.5 times the music tempo, you will have to go one step every 2 beats. The user never feels uncomfortable. Even when jogging while listening to a song with a slow music tempo, for example, if the walking pitch is four times the music tempo, the user will have to go four steps for each time signature, and the user will feel uncomfortable. I don't remember.
Furthermore, when the original music tempo is less than (√0.5) times the walking pitch, that is, when listening to a song with a so-called slow music tempo during jogging, for example, music is played at the jogging walking pitch. If you match the tempo as it is, it will feel like it's been extended, making it a completely different song. However, by performing calculations as shown in the present embodiment, the music tempo can be adjusted to the walking pitch without impairing the music atmosphere.
[0031]
The music playback speed determined by the music tempo determination unit 40 falls within the range shown in Equation 1 even when the walking pitch W changes significantly. In other words, when the user's walking speed changes extremely from a fast speed to a slow speed, such as jogging to cool down, or when the user's walking speed changes extremely from a slow speed to a fast speed, such as from warm-up to jogging, for example. However, since the music playback speed changes only between about (√0.5) times and (√2) times, the original song atmosphere is not lost and the user feels uncomfortable. Absent.
[0032]
FIG. 2 is a flowchart for explaining the flow of processing in the music tempo determination unit 40 in the present embodiment.
First, the value of the walking pitch W detected by the walking pitch detection unit 10 described later with reference to FIG. 3 or FIG. 4 is output and sent to the music tempo determination unit 40 when the user walks. . Therefore, the music tempo determination unit 40 takes in the value of the walking pitch W (step 201). In addition, the music tempo determination unit 40 outputs and sends the value of the music tempo M detected by the music tempo detection unit 20. Therefore, the music tempo determination unit 40 takes in the value of this music tempo M (step 202).
[0033]
A determination is made as to whether or not the relationship shown in the left two terms of Equation 1 holds for the value of the walking pitch W and the value of the music tempo M captured in step 201 and step 202 (step). 203). Here, when the relationship of step 203 does not hold, the value of the walking pitch W is doubled (W ′ = 2W) (step 204), the determination of step 203 is performed again, and the relationship of step 203 is established. Until it becomes, the process of step 203 and step 204 is repeated.
If it is determined in step 203 that this relationship holds, a determination is made as to whether or not the relationship shown in the right two terms of Equation 1 holds (step 205). If the relationship at step 205 does not hold, the value of the walking pitch W is increased by 0.5 (W ′ = 0.5 W) (step 206), the determination at step 205 is performed again, and the relationship at step 205 is determined. Steps 205 and 206 are repeated until the above holds.
[0034]
If the relationship between Step 203 and Step 205 is established, the value of the new music tempo M ′ is matched with the value of the walking pitch W as shown in Equation 2 (Step 207). In this way, a new music tempo M 'value is determined. The new music tempo M 'is output from the music tempo determination unit 40 to the music playback speed control unit 50 (step 208).
In step 208, after the new music tempo M 'is output to the music playback speed controller 50, the operations from step 201 are repeated. At this time, a series of processes may be continuously repeated to change the playback speed in real time, or the same process may be performed at regular intervals to change the music tempo M. Furthermore, an average value of detection values obtained after a certain period of time may be acquired and the playback speed may be changed for each song.
[0035]
The music playback speed control unit 50 controls the music playback speed according to the new music tempo M ′ determined by the music tempo determination unit 40 in the above-described procedure. As means for controlling the playback speed, as described above, the sound output time in the music playback section 30 can be extended or shortened, or the drive speed of the media drive means in the music playback section 30 can be changed.
[0036]
Further, the music data read from the recording medium by the music reproducing unit 30 is A / D (Analog to Digital) converted as necessary, and stored in the storage means by a method such as DMA (Direct Memory Access). It is also possible to control to read out and output music data from this storage means according to the new music tempo M ′ determined by the music tempo determination unit 40.
[0037]
The music tempo fine adjustment input unit 60 further finely adjusts the new music tempo M ′ output from the music playback device according to the present embodiment. The music tempo fine adjustment input unit 60 is provided with an operation unit such as a dial for finely adjusting the music tempo M, and an input signal can be generated by operating the operation unit. The new music tempo M ′ determined by the music tempo determination unit 40 can be further finely adjusted based on the music tempo fine adjustment input value input by the music tempo fine adjustment input unit 60. Then, the new music tempo M ′ finely adjusted by the music tempo fine adjustment input unit 60 is sent to the music playback speed control unit 50, and music is output according to the finely adjusted new music tempo M ′. When the user does not like the music tempo M automatically changed according to his / her walking pitch W by providing the music tempo fine adjustment input unit 60 and providing a room for the user to arbitrarily change the music tempo M. It becomes possible to adjust to the music tempo M preferred by the user. The music tempo fine adjustment input value once inputted by the music tempo fine adjustment input unit 60 can be stored even when the power of the music reproducing apparatus is turned off. The input music tempo fine adjustment input value can be used until the music tempo M is finely adjusted next time.
[0038]
FIG. 3 is a diagram illustrating an example of a vibration sensor that detects a walking pitch in the present embodiment.
As shown in FIG. 3, a vibration sensor such as a pedometer used as the walking pitch detection unit 10 in the present embodiment includes a capsule 11 provided with a lid 11a, a coil spring 12, a weight 13, and electrodes. 14 are provided. A pair of lead wires 15A and 15B are drawn out from the coil spring 12 and the electrode 14. As the capsule 11 of the vibration sensor, a cylindrical one sealed with an insulator such as a plastic material is used. In the capsule 11, a conductive weight 13 is provided from the lid portion 11 a through the coil spring 12. Further, an electrode 14 is annularly provided around the weight 13.
[0039]
When the capsule 11 of the vibration sensor formed in this way moves, the weight 13 comes into contact with the electrode 14 and the space between the lead wires 15A and 15B changes from OFF to ON, so that the movement when the user walks is detected. Can do. Such an ON / OFF signal is a value output from the walking pitch detection unit 10. In addition, this value is not output as it is, but can also be output as a value averaged by the averaging means.
[0040]
FIG. 4 is a diagram illustrating an example of a ground-type walking detection device that detects a walking pitch from a change in potential according to the present embodiment.
Here, the walking pitch detection unit 10 detects the potential of the human body that changes with walking, and includes a reference electrode 16 and a non-contact detection electrode 17 that faces the pedestrian H to be detected. ing. In such a walking detection device, a capacitor having a capacitance Ca is formed using air between the pedestrian H to be detected and the detection electrode 17 as a medium. Then, a change in the potential of the human body accompanying walking is detected by the capacitance Ca of the capacitor formed between the pedestrian H and the detection electrode 17.
[0041]
The reference electrode 16 obtains a potential (air) of the detection electrode 17 that is away from the pedestrian H and does not face the pedestrian H. The reference electrode 16 further includes a zero potential generator that corrects the potential obtained by the reference electrode 16 to zero “0”. Here, in order to correct the potential obtained by the reference electrode 16 to zero “0”, for example, disclosed in Japanese Patent Application Laid-Open No. 7-245191 is disclosed in Japanese Patent No. 2739457, which is a technique for eliminating static electricity by corona discharge action. The disclosed method of creating zero potential by simultaneously irradiating positive and negative ions and forcibly taking ion balance, or the method of irradiating ionizing radiation with a short wavelength from ultraviolet rays, etc. can be considered. Absent.
[0042]
It functions as a potential detection circuit when detecting the walking of the pedestrian H, and even if the human body of the pedestrian H and the detection electrode 17 are not directly connected, the potential change of the human body that occurs when the pedestrian H walks due to electrostatic coupling. Can be detected.
In such a walking detection device, the human body of the pedestrian H and the detection electrode 17 are electrostatically coupled and do not pass a direct current component, so that the detected potential waveform touches both the positive and negative poles. If this potential waveform peak is analyzed using an existing waveform analysis method, the walking (number of steps) of the pedestrian H can be detected. This walking detection device can detect a change in the potential of the human body of the pedestrian H by non-contact electrostatic coupling between the human body of the pedestrian H and the detection electrode 17, and can detect the walking of the pedestrian H. Since the gait detection device itself is provided with a reference electrode by the reference electrode 16, the entire device is not charged and cannot be detected, and stable and highly accurate detection can be performed.
The walking signal thus detected is a value output from the walking pitch detection unit 10. In addition, this value is not output as it is, but can also be output as a value averaged by the averaging means.
[0043]
In the present embodiment, as an example of the walking pitch detection unit 10, the example in which detection is performed based on the vibration sensor and the change in potential has been described with reference to FIGS. 3 and 4. Any other mechanism can be used as long as it can detect the walking pitch.
[0044]
Further, the music playback speed control unit 50 is determined by the music tempo determination unit 40 even when the music playback device according to the present embodiment is used to play music on a MIDI (Musical Instrument Digital Interface) compatible device. A control signal is sent to the music playback unit 30 in accordance with the new music tempo M ′. The control signal in this case is handled as timing information when performing with a MIDI compatible device. Since MIDI data can be played in accordance with timing information input from the outside, by inputting this control signal as timing information in MIDI data, music whose playback speed is controlled according to the new music tempo M ′. Will be played.
[0045]
Thus, according to the present embodiment, the user's walking pitch W and the original music tempo M can be detected, and the playback speed corresponding to the walking pitch W based on these detected values. Can play music. Further, such music reproduction can be applied not only to a music reproducing apparatus for reproducing music recorded on a recording medium as in the prior art, but also to music performance based on MIDI data. If music can be played or played at a playback speed corresponding to the walking pitch W, the user's movement during walking can be synchronized with the music, so that a sense of unity between the user's movement and music can be obtained. It is possible to output such music.
[0046]
【The invention's effect】
As described above, according to the present invention, the music tempo reproduced by the music reproducing device can be changed in accordance with the walking pitch of the user, and the user can have a sense of unity of movement and music.
[Brief description of the drawings]
FIG. 1 is a block diagram showing a functional configuration of a music playback device according to the present embodiment.
FIG. 2 is a flowchart illustrating a process flow in a music tempo determination unit 40 in the present embodiment.
FIG. 3 is a diagram showing an example of a vibration sensor for detecting a walking pitch W in the present embodiment.
FIG. 4 is a diagram illustrating an example of a ground-type walking detection device that detects a walking pitch W from a change in potential according to the present embodiment.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 10 ... Walking pitch detection part, 11 ... Capsule, 11a ... Cover part, 12 ... Coil spring, 13 ... Weight, 14 ... Electrode, 15A, 15B ... Lead wire, 16 ... Reference electrode, 17 ... Detection electrode, 20 ... Music tempo detection , 30 ... music playback unit, 40 ... music tempo determination unit, 50 ... music playback speed control unit, 60 ... music tempo fine adjustment input unit

Claims (9)

  1. A music playback device for playing back music data,
    A walking pitch detection unit that detects a walking pitch from the movement of a pedestrian; and
    A music tempo detector for detecting the music tempo from the music data;
    A music tempo determination unit that determines a new music tempo from the walking pitch detected by the walking pitch detection unit and the music tempo detected by the music tempo detection unit;
    A music player for playing music,
    A music playback speed control unit for controlling the music playback unit according to the new music tempo determined by the music tempo determination unit ;
    Equipped with a,
    The music tempo determination unit changes the music tempo and determines the new music tempo so that one of the walking pitch and the music tempo is an integer multiple of 2 of the other. A music playback device.
  2.   The music playback device according to claim 1, further comprising a music tempo fine adjustment input unit that accepts a fine adjustment input from the outside by a user, and adjusting the new music tempo determined by the music tempo determination unit. .
  3. The walking pitch detection unit detects the walking pitch of the pedestrian by a change in potential generated by walking of the pedestrian and outputs a signal synchronized with the walking pitch to the music tempo determination unit,
    The music playback device according to claim 1, wherein the music tempo determination unit determines the new music tempo based on the signal.
  4.   The music playback unit reads and temporarily stores the music data, and changes and plays back the music tempo of the stored music data according to the control of the music playback speed control unit. Item 2. The music playback device according to Item 1.
  5. A music playback device for playing back music data,
    Detecting means for detecting a walking pitch of the pedestrian;
    Reproducing means for changing the music tempo so that one of the walking pitch and the music tempo of the music data is an integral multiple of the other, and reproducing the music data at the changed music tempo. A music playback device characterized by comprising.
  6. The reproducing means includes
    The music tempo is changed so that one of the walking pitch and the music tempo is an integer multiple of 2 of the other, and the music data is reproduced at the changed music tempo. The music playback device according to claim 5 .
  7. A method for controlling a music playback device for playing back music data,
    Capturing a pedestrian walking pitch data value carrying the music player;
    Capturing a music tempo data value read by the music playback device;
    When the ratio between the data value of the walking pitch and the data value of the music tempo is equal to or greater than a certain value, the ratio of the data value of the walking pitch and the data value of the music tempo is set to be within a certain value. Changing the data value;
    Changing the playback speed of the music data based on the data value of the changed walking pitch;
    A method for controlling a music playback apparatus, comprising:
  8. The step of changing the data value of the walking pitch includes:
    8. The method of controlling a music playback device according to claim 7 , wherein the data value of the walking pitch is multiplied by an integer or divided by an integer.
  9. The step of changing the data value of the walking pitch includes:
    8. The method of controlling a music playback device according to claim 7 , wherein the data value of the walking pitch is multiplied by an integer power of 2 or divided by an integer power of 2.
JP2001271583A 2001-09-07 2001-09-07 Music playback device and method for controlling music playback device Active JP4069601B2 (en)

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Families Citing this family (26)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4568506B2 (en) * 2004-02-05 2010-10-27 パイオニア株式会社 Playback control device
JP4052274B2 (en) * 2004-04-05 2008-02-27 ソニー株式会社 Information presentation device
JP2006114174A (en) * 2004-10-18 2006-04-27 Sony Corp Content reproducing method and content reproducing device
JP4582785B2 (en) * 2005-05-17 2010-11-17 愛知県 Strength training equipment with music performance function
JP2006337505A (en) * 2005-05-31 2006-12-14 Sony Corp Musical player and processing control method
US8180468B2 (en) 2005-07-01 2012-05-15 Pioneer Corporation Computer program, information reproduction device, and method
JP4770313B2 (en) * 2005-07-27 2011-09-14 ソニー株式会社 Audio signal generator
JP4492488B2 (en) * 2005-08-26 2010-06-30 ソニー株式会社 Information processing apparatus, information processing method, and program
JP4470119B2 (en) 2005-08-31 2010-06-02 ソニー株式会社 Playback apparatus, playback method, and playback program
JP2007101772A (en) * 2005-10-03 2007-04-19 D & M Holdings Inc Reproducing device and reproducing method
US20110072955A1 (en) 2005-10-06 2011-03-31 Turner William D System and method for pacing repetitive motion activities
US7825319B2 (en) 2005-10-06 2010-11-02 Pacing Technologies Llc System and method for pacing repetitive motion activities
JP4654896B2 (en) * 2005-12-06 2011-03-23 ソニー株式会社 Audio signal reproducing apparatus and reproducing method
JP4264752B2 (en) 2005-12-16 2009-05-20 ソニー株式会社 Audio signal player and playback method
JP4415946B2 (en) 2006-01-12 2010-02-17 ソニー株式会社 Content playback apparatus and playback method
DE602007001281D1 (en) 2006-01-20 2009-07-30 Yamaha Corp Apparatus for controlling the reproduction of music and apparatus for the reproduction of music
JP4839853B2 (en) * 2006-01-20 2011-12-21 ヤマハ株式会社 Music playback control device and music playback device
JP2007226935A (en) 2006-01-24 2007-09-06 Sony Corp Audio reproducing device, audio reproducing method, and audio reproducing program
JP4811046B2 (en) 2006-02-17 2011-11-09 ソニー株式会社 Content playback apparatus, audio playback device, and content playback method
JP4356700B2 (en) 2006-02-21 2009-11-04 ソニー株式会社 Playback device
JP4941037B2 (en) * 2007-03-22 2012-05-30 ヤマハ株式会社 Training support apparatus, training support method, and program for training support apparatus
JP4735581B2 (en) * 2007-03-27 2011-07-27 ヤマハ株式会社 Notification control device
JP4306754B2 (en) 2007-03-27 2009-08-05 ヤマハ株式会社 Music data automatic generation device and music playback control device
JP4996423B2 (en) * 2007-11-06 2012-08-08 クラリオン株式会社 In-vehicle acoustic device and control method for in-vehicle acoustic device
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WO2019150800A1 (en) * 2018-02-02 2019-08-08 ソニー株式会社 Information processing device, information processing method, and program

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