JP2007156261A - Sound reproducing device, sound reproducing method, and sound reproducing program - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To reproduce a sound such as music so that a user can always have a sense of unity with one's own movements without being made to feel unnaturalness such as a sense of incompatibility. <P>SOLUTION: The operation tempo of the user is detected via a movement information sensor 24 and a movement information analysis circuit 23, and a control section 10 retrieves music data having a tempo corresponding to the operation tempo from a recording medium in a music information storage device section 21 and reproduces the music data. When the music data having the tempo corresponding to the operation tempo of the user cannot be retrieved, the control section 10 controls a music reproduction data generation device section 22 to retrieve one or both of music data having a tempo whose difference from an integral multiple of the operation tempo is within a specified range and music data having a tempo whose difference from the reciprocal of an integral multiple of the operation tempo is within a specified range, and reproduces detected audio data. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to, for example, a device having a function of reproducing sound, such as a hard disk player, an MD (Mini Disc (registered trademark)) player, a portable information terminal with a music data reproduction function, a method used in an apparatus for reproducing sound, Regarding the program.

  In recent years, along with the spread of miniaturized and lightweight portable sound reproducing devices, music has come to be heard in scenes that have not existed before. For example, take a portable sound player outdoors and listen to music while walking, or listen to music while doing sports such as jogging or walking for health maintenance, health promotion, dieting, etc. Is widely practiced.

  In this case, when the tempo of the music to be reproduced matches the tempo of the user's action (for example, exercise such as walking, jogging, walking, etc.), a sense of unity between the action and the music can be obtained. For this reason, even if the tempo of the music to be played is different from the tempo of the user's movement or the tempo of the user's movement is suddenly changed, the user's movement and music are integrated so that a sense of unity can be obtained. An apparatus that detects the tempo of an operation and changes the tempo of music to be played in accordance with the change of the tempo of the operation is considered.

  For example, in Patent Document 1 described later, a motion worn or walking pace data is obtained from vibration or walking step data accompanying movement by a detector worn by the user on the body, and the music playback tempo is set according to the change. An apparatus for changing is disclosed. By using such a device, it is possible to continue exercise or to exercise efficiently according to the music to be played.

The above-described Patent Document 1 is as follows.
Japanese Patent Laying-Open No. 2005-156641

  Incidentally, the invention described in Patent Document 1 described above changes the playback tempo of the music being played in accordance with the user's operation tempo, and the music playback tempo is always set to the user's operation tempo. Can be followed. However, in order to change the playback tempo of the music being played back, there may be cases where the user is provided with music having a transient tempo from the start to the end of the change. Also, since the music to be played is generally ready-made, it is considered that some music is unsuitable for changes in the playback tempo.

  In view of the above, the present invention enables music to be played at all times so as to obtain a sense of unity with the user's operation without giving the user any unnaturalness such as discomfort. With the goal.

In order to solve the above-described problem, the sound reproducing device according to the first aspect of the present invention provides:
Detection means for detecting a user's movement tempo;
First search means for searching for music data having a tempo that is different from a user's motion tempo detected by the detection means within a predetermined range;
A first reproduction means for reproducing the detected music data when the first search means detects tempo music data whose difference from the user's motion tempo is within a predetermined range;
When the first search means does not detect music data having a tempo that is different from the user's motion tempo within the predetermined range, the difference between the user's motion tempo and the integral multiple of the user's motion tempo is within the predetermined range. Second search means for searching for one or both of music data having a tempo and a music data having a tempo in which a difference between the user's operation tempo and a fraction of an integer is within a predetermined range;
When music data of a corresponding tempo is detected by the second search means, the second search means comprises second playback means for playing back the detected music data.

  According to the sound reproducing apparatus of the first aspect of the present invention, the user's motion tempo (speed of motion) is detected by the detection means, and the tempo whose difference from the detected motion tempo is within a predetermined range. Are retrieved by the first retrieval means. Then, when music data having a tempo whose difference from the operation tempo is within a predetermined range can be detected, the searched music data is reproduced by the first reproduction means.

  If music data of a tempo whose difference from the operation tempo is within a predetermined range cannot be detected, music data of a tempo whose difference from an integer multiple of the operation tempo is within the predetermined range and an integer of the operation tempo One or both of the music data with a tempo whose difference from the first is within a predetermined range is searched by the second search means. Then, when the corresponding data is detected by the second search means, the detected music data is reproduced by the second reproduction means.

  In the second detection means, tempo music data whose difference from an integer multiple of the operation tempo is within a predetermined range and tempo music data whose difference between an integer of the operation tempo is within a predetermined range. Or a tempo music data whose difference from an integer multiple of the operating tempo is within a predetermined range and a difference between an integer of the operating tempo and a predetermined range. It can be configured to always search both the music data of the tempo within.

  Further, the second detection means searches for music data of a tempo whose difference from an integer multiple of the operation tempo is within a predetermined range, and when the corresponding music data cannot be detected, an integer part of the operation tempo is obtained. A search is performed according to one of the conditions, such as detecting music data having a tempo that is within a predetermined range, and if the corresponding data cannot be detected, the search is performed according to the other condition. be able to.

  As a result, even if there is no tempo music data whose difference from the user's motion tempo is within a predetermined range, music data having a tempo that is an integral multiple of the user's motion tempo or the user's motion Music data with a tempo that is an integral number of the tempo is detected and played back, so that the user can have a sense of unity and movement without giving the user any unnaturalness. To be able to play music.

  According to the present invention, when walking, jogging, or dashing for walking or exercise purposes in daily life, music with a tempo synchronized with the user's motion tempo is played, and the user's motion and A sense of unity with the reproduced music can be obtained.

  In addition, even when there is no audio data whose difference from the user's motion tempo is within a predetermined range, music data with a tempo that has a fixed relationship with the user's motion tempo can be selected and played back. The number of music data to be searched and reproduced according to the operation tempo can be increased.

  Hereinafter, an embodiment of an apparatus, a method, and a program according to the present invention will be described with reference to the drawings. In the embodiments described below, an apparatus, method, and program according to the present invention are provided with, for example, a portable hard disk player, a portable MD (Mini Disc (registered trademark)) player, and a music data (music data) playback function. A case where the present invention is applied to a portable sound reproducing apparatus (music reproducing apparatus) such as a mobile phone terminal provided will be described as an example.

[Configuration of sound playback device]
FIG. 1 is a block diagram for explaining the sound reproducing apparatus of this embodiment. As described above, the sound reproducing device of this embodiment is a portable device, and can be reduced in size and weight, and can be easily carried and used by storing it in a pocket of clothes. It can be done. Therefore, it is suitable for use in reproducing and listening to music while exercising such as walking and jogging.

  As shown in FIG. 1, the sound reproducing device of this embodiment includes a control unit 10, a music information storage device unit 21, a music reproduction data generating device unit 22, a movement information analysis circuit 23, a movement information sensor 24, and an audio signal output. Processing unit 31, speaker 32, display circuit 33, display unit 34, key operation unit 41, microphone (described as a microphone in FIG. 1) 42, audio signal input processing unit 43, external terminal 51, I / F (interface) 52, a storage device unit 53, a communication I / F 61, a transmission / reception circuit 62, and a transmission / reception antenna 63.

  The control unit 10 controls each unit of the sound reproducing device. A CPU (Central Processing Unit) 11, a ROM (Read Only Memory) 12, and a RAM (Random Access Memory) 13 are connected through a CPU bus 14. It is configured. Here, the CPU 11 can control each unit by executing a program and supplying a control signal generated in accordance with the program to the respective units, and is a main body of control. The ROM 12 stores and holds various programs executed by the CPU 11 and various data necessary for processing. The RAM 13 is mainly used as a work area (work area), for example, temporarily storing intermediate results of processing.

  The music information storage device unit 21 is a device portion that performs processing of reading music data recorded on a recording medium and writing music data to the recording medium. The recording medium is formed using a hard disk, a magneto-optical disk such as MD (Mini Disc (registered trademark)), an optical disk such as CD (Compact Disc) or DVD (Digital Versatile Disc), a semiconductor memory, or a semiconductor memory. There are various types such as an IC card memory and a magnetic tape. When the recording medium is, for example, a hard disk, the music information storage device unit 21 corresponds to a hard disk drive, and when the recording medium is an optical disk, the music information storage device. The unit 21 corresponds to an optical disk drive. In this embodiment, the music information storage device unit 21 will be described as a hard disk drive, for example.

  The music playback data generation unit 22 performs various processes on music data (music data) to be played back in accordance with control from the control unit 10. Specifically, as will be described later, music data to be reproduced is searched for and selected from a plurality of music data stored in the music information storage unit 21, and the reproduction order of the music data to be reproduced is determined. This is a part for performing processing such as automatically generating music data to be reproduced using parameters prepared in advance.

  The exercise information analysis circuit 23 is a portion that performs analysis processing and the like related to the user's exercise in accordance with control from the control unit 10 or the like. Specifically, it is a part that performs processing such as receiving detection output from the exercise information sensor 24 and analyzing it to detect the user's operation tempo (exercise tempo).

  In FIG. 1, the functions of the music reproduction data generation unit 22 and the exercise information analysis circuit 23 indicated by double-line blocks can also be realized by a program executed in the control unit 10. In other words, the functions of the music reproduction data generation unit 22 and the exercise information analysis circuit 23 can be realized by the function of the control unit 10.

  The movement information sensor 24 is used when the user is exercising (when operating) using one or more of various sensors such as an acceleration sensor, a vibration sensor, a shock sensor, and a pressure sensor. This can be detected. These detection outputs are supplied to the exercise information analysis circuit 23 as described above, and the exercise (motion) tempo of the user is detected.

  In the sound reproduction apparatus of this embodiment, the audio signal output processing unit 31 receives supply of audio data (music data or the like) to be reproduced supplied through the control unit 10, and converts this into D / A (Digital / Analog) is converted to form an analog audio signal for output. The analog audio signal from the audio signal output processing unit 31 is supplied to the speaker 32, and sound corresponding to the analog audio signal supplied thereto is emitted from the speaker 32.

  Although not shown, the audio signal output processing unit 31 is connected to an audio output terminal. When headphones or earphones are connected to the audio signal output processing unit 31, analog audio from the audio signal output processing unit 31 is connected. The signal is supplied to the headphones and earphones connected thereto through the audio signal output terminal, and the reproduced sound can be heard through the headphones and earphones. In this way, when headphones or earphones are connected to the audio output terminal, the reproduced sound is not emitted from the speaker 32.

  The display circuit 33 forms an image to be displayed on the display screen of the display unit 34 in accordance with control from the control unit 10. In this case, the display unit 34 uses a display element such as an LCD (Liquid Crystal Display) or EL (Electro Luminescence) panel, and has a relatively large display screen to display various information. It is something that can be done. On the display screen of the display unit 34, operation guidance, an error message, a title of reproduced music, other various character information, image information, and the like are displayed under the control of the control unit 10.

  The key operation unit 41 includes a plurality of operation keys and function keys, and is a part that receives input of instructions and information to be given to the sound reproduction device such as start and end of music reproduction and selection of music to be reproduced. . The microphone 42 picks up sound, converts it into an electric signal, and takes it in. An analog audio signal corresponding to the sound collected by the microphone 42 is supplied to the audio signal input processing unit 43, where A / D (Analog / Digital) conversion and the like are performed, and a music information storage device through the control unit 10. It is possible to record on the recording medium of the unit 21.

  The external terminal (external input / output terminal) 51 is a connection terminal with an external device. For example, it receives music data or the like from another sound reproduction apparatus and takes it in, or conversely, The music data can be supplied to the other external device from the sound reproducing apparatus of the embodiment. The I / F 52 takes the data supplied through the external terminal into the sound reproducing device of this embodiment and converts it into a format that can be processed, or conversely to other equipment. For example, data to be output is converted into data in a format that can be output.

  As will be described later, the storage device 53 stores and holds data to be stored, for example, various information such as identification information of reproduced music data, characteristic information of the music data, and operation tempo of the user. It is something that can be done. It is of course possible to store music data in the storage unit 53.

  Note that the storage device unit 53 is a device that reads various data recorded on a recording medium and writes various data to the recording medium, as with the music information storage device unit 21 described above. Part. The recording medium is formed using a hard disk, a magneto-optical disk such as MD (Mini Disc (registered trademark)), an optical disk such as CD (Compact Disc) or DVD (Digital Versatile Disc), a semiconductor memory, or a semiconductor memory. There are various types such as an IC card memory and a magnetic tape. When the recording medium is, for example, a hard disk, the storage device 53 corresponds to a hard disk driver. When the recording medium is an optical disk, the storage device 53 is an optical disk. Corresponds to the driver. In this embodiment, the storage device unit 53 will be described as an IC card memory drive, for example.

  In addition, the sound reproducing apparatus of this embodiment includes a communication I / F (interface) 61, and is connected to a network 100 such as the Internet, for example, and the target music data or the music data from a music database on the Internet. You can acquire information such as the title, genre, length (playback time), song tempo, and other characteristics information, and send various requests and information to the target party over the Internet. Yes.

  Further, for example, by connecting to a wireless LAN (Local Area Network) or the like through the transmission / reception circuit 62 and the transmission / reception antenna 63, music data, characteristic information thereof, and the like can be acquired, or other devices connected to the wireless LAN can be obtained. Request and information can be sent.

  Then, in response to an instruction input from the user received through the key operation unit 41, the control unit 10 controls each unit, and performs communication I / F 61, external terminal 51 and I / F 51, transmission / reception circuit 62, and transmission / reception antenna. The music data supplied through 63 and the characteristic information of the music data can be recorded on the recording medium of the music information storage device unit 21 through the control unit 10.

  Usually, a list of music (music list) stored and held as music data in the music information storage device unit 22 is formed by the control unit 10 and displayed on the display screen of the display unit 34 through the display circuit 33. Then, by selecting music data to be reproduced through the key operation unit 41 from the displayed music list display, the music data can be reproduced.

  In this case, the control unit 10 reads out the target music data from the music information storage device unit 21 in response to the reproduction instruction including the selection information of the music data received through the key operation unit 41, and reads it out as an audio signal output processing unit. 31. As described above, when music data is supplied to the audio signal output processing unit 31, an analog audio signal for output is formed as described above, and the headphones 32 connected to the speaker 32 or an external output terminal (not shown) The music corresponding to the music data can be heard through the earphone.

  In the sound reproducing device of this embodiment, for example, when receiving an instruction input for playing music according to the user's operation tempo through the key operation unit 41, the control unit 10 causes the exercise information analysis circuit 23. And the motion information analysis circuit 23 analyzes the motion information of the user acquired by the motion information sensor 24 to detect the motion tempo of the user.

  The control unit 10 controls the music reproduction data generation device unit 22 so that the music information storage device unit stores music data with a tempo that is different from the user's motion tempo detected by the exercise information analysis circuit 23 within a predetermined range. The music data stored in the recording medium 21 is searched. In this case, for example, music data having a target tempo is searched based on music information that is a list of reproducible music data recorded on the recording medium of the music information storage device unit 21.

  FIG. 2 is a diagram for explaining an example of a music list created on the recording medium of the music information storage device unit 21, for example, in the sound reproducing device of this embodiment. As described above, the music list is a list of music data stored in the storage medium of the music information storage device 21 and made reproducible by the sound playback device. As shown in FIG. It consists of information such as genre, length (playback time), song tempo, etc.

  Here, the title means the title of the music obtained by reproducing the music data, and here also has a role as an identifier of each music data. As shown in FIG. 2, the genre reproduces music data such as pops, HIP-HOP (hip hop), J-POP (Japanese pop music), R & B (rhythm and blues), and so on. This indicates the type of music obtained. The length (reproduction time) indicates the reproduction time of the music data, and the song tempo is the speed at the time of reproduction of the music data, and is the number of beats per minute (BPM: Beat Per Minutes). Further, as other information, various information related to music data such as artist name, date of sale, and other identification numbers can be managed.

  The title, genre, length (playback time), song tempo, etc. constituting the song list may be information provided on a CD (Compact Disc) along with music data or provided on the Internet. What is disclosed in the music information database is downloaded (acquired) and used.

  For example, when music data is supplied from an external device such as a CD player connected to an external terminal and is recorded on the recording medium of the music information storage unit 21, the music data is attached to the music data. When information such as the title, genre, length (reproduction time), and music tempo is received, the music list can be formed using the information.

  If information such as title, genre, length (playback time), song tempo, etc. is not provided along with the music data, it connects to the Internet through the communication I / F 61 and accesses a music information database provided on the Internet. Then, necessary information such as the title, genre, length (playback time), song tempo, etc. can be acquired (downloaded) and used to form a song list.

  Alternatively, the music tempo of the music data may be acquired by analyzing the music data acquired and recorded on the recording medium of the music information storage device unit 21 and used. In this case, the analysis of the music data may be performed by the control unit 10 or may be performed by the music reproduction data generation device unit 22.

  As shown in FIG. 2, the music list has been described as being composed of title, genre, length (playback time), music tempo, and other information for each music data, but the present invention is not limited to this. . In this embodiment, it is sufficient that there is at least information in which identification information for identifying each music data is associated with the music tempo for each music data. Further, the identification information of each music data is not limited to the title. As identification information for each song, for example, information given in advance that is unique to each song, such as ISRC (International Standard Recording Code), may be used.

  Then, the music reproduction data generation unit 22 refers to the music list as shown in FIG. 2 created on the recording medium of the music information storage unit 21, and the difference from the user's operation tempo is within a predetermined range. Search for music data with a tempo (music tempo). Here, the “predetermined range” when the difference from the operation tempo of the user is within the predetermined range is predetermined and can be changed by the user. For example, the difference from the user's operation tempo is set within ± 5.

  In this case, if the operation tempo of the user is “110”, for example, the difference in the music tempo of the target music data is ± 5, so that the range is “105” or more and “115” or less. , “105 ≦ song tempo ≦ 115”. According to this example, in the case of the music information shown in FIG. 2, only music C is searched (detected) as music data (music) to be reproduced.

  Of course, the range of the difference from the user's operation tempo can be set to an appropriate range such as within ± 10, within ± 9, or within ± 8. It is also possible to set the difference from the user's operation tempo to be ± 0 so as to detect music data having a tempo that matches the user's operation tempo. It is also possible to make the minus side range different from the plus side range, such as −10 or more and +5 or less.

  Then, the music data retrieved in the music reproduction data generating device 22 in this way is read from the recording medium of the music information storage device unit 21 and supplied to the audio signal output processing unit 31 where it is decoded. Both are converted into analog audio signals in a format to be supplied to the speaker 24, and this is supplied to the speaker 24. As a result, music corresponding to music data having a tempo corresponding to the user's operation tempo is emitted from the speaker 24, and the user can exercise while listening to the music.

  Further, in the sound reproducing device of this embodiment, when music data having a tempo corresponding to the user's operation tempo cannot be detected on the recording medium of the music information storage device unit 21, for example, communication I / O A music database connected to a high-frequency network such as the Internet is accessed through F, music data having a target tempo is downloaded, and the recording medium of the music information storage device unit 21 or the recording medium of the recording device unit 53 is downloaded. It can be stored and played back.

  Further, when music data corresponding to the user's motion tempo cannot be detected, music data having a tempo that is different from an integer multiple of the user's motion tempo within a predetermined range, and the user's motion tempo. One or both of the tempo music data whose difference from 1 / integer is within a predetermined range is searched, and the detected music data can be reproduced.

  By doing this, even if there is no tempo music data according to the user's operation tempo, the music data of the tempo synchronized or almost synchronized with the user's operation tempo is searched for. By searching for and playing this, music can be played so that the user of the sound playback device can feel a sense of unity with the user's movement without giving any unnaturalness to the user. Yes.

  In this embodiment, the difference between the tempo music data whose difference from the integral multiple of the user's motion tempo is within a predetermined range and the difference between the integral multiple of the user's motion tempo within the predetermined range is within the predetermined range. There are at least five modes for searching for one or both of music data of a certain tempo, as shown below.

  That is, (1) when searching only music data having a tempo whose difference from an integer multiple of the operation tempo is within a predetermined range, (2) a tempo whose difference from the integer fraction of the operation tempo is within the predetermined range. When searching only for music data, (3) music data with a tempo in which the difference between the tempo music data whose difference from an integer multiple of the operating tempo is within a predetermined range and the integer fraction of the operating tempo is within the predetermined range. (4) When searching for music data of a tempo whose difference from an integer multiple of the operation tempo is within a predetermined range, if no corresponding music data is detected, the operation tempo When detecting music data with a tempo whose difference from a fraction of an integer is within a predetermined range, (5) searching for music data with a tempo with a difference from an integer of an operation tempo being within a predetermined range; The corresponding music data could not be detected Expediently, the difference between the integer multiple of the motion tempo is five When looking for music data of a tempo is within a predetermined range.

  The manner in which the music data is searched is determined in advance by the manufacturer of the sound reproducing device, or a plurality of search modes can be used. It is only necessary to be able to select, or to set a condition using the user's operation tempo and to select a search mode according to the user's operation tempo.

  As described above, the sound reproducing apparatus according to this embodiment is similar to the conventional portable hard disk player, portable MD player, semiconductor memory player, and the like through the music list from the music data recorded on the recording medium. When the specified music data can be played and the user performs exercises such as walking, jogging, and running, the user's motion tempo is detected, and the detected motion tempo of the user is detected. Music data having a tempo with a difference within a predetermined range can be searched and reproduced.

  If there is no tempo music data whose difference from the user's motion tempo is within a predetermined range, the tempo music data whose difference from an integral number of the motion tempo is within the predetermined range is By reproducing whether the music data has a tempo whose difference from an integer multiple of the operation tempo is within a predetermined range, music having a tempo substantially synchronized with the user's operation tempo can be emitted.

[Details of operation of sound reproduction device]
FIG. 3 is a flowchart for explaining the operation in the case where the user's operation tempo is detected and the music of the tempo corresponding to the user's operation is emitted. The process shown in FIG. 3 is mainly executed in the control unit 10 when an instruction input for playing a music (music) according to the user's operation tempo is received through the key operation unit 41, for example. is there.

  First, when the control unit 10 receives an instruction input for playing music according to the user's operation tempo through the key operation unit 41, the control unit 10 controls the exercise information analysis circuit 23 and outputs a detection output from the exercise information sensor 24. Obtain (step S101). Then, the control unit 10 calculates the motion tempo of the user by controlling the motion information analysis circuit 23 and analyzing the detection output from the motion information sensor 24 (step S102).

  As described above, the motion information sensor 24 includes an acceleration sensor, a vibration sensor, a shock sensor, a pressure sensor, and the like, and the motion information analysis circuit 23 detects a detection output (detection waveform) from the motion information sensor 24. ) By detecting the period of the peak value, calculating the autocorrelation of the detection output to detect the periodicity, or performing frequency spectrum analysis to detect the periodicity. Detect the operation tempo. Of course, the user's operation tempo may be detected using other methods.

  The operation tempo is specifically the speed of the operation as described above. For example, when the user's operation is walking or running, the operation tempo is the number of steps per minute. Is the number of movements per minute, such as the number of jumps per minute.

  Then, the control unit 10 controls the music reproduction data generating device unit 22 and, as described with reference to FIG. 2, based on the user's motion tempo calculated by the exercise information analysis circuit 23, for example, music information storage A song list (music data) corresponding to the operation tempo is searched with reference to the song list created on the recording medium of the device unit 21 (step S103).

  In the search process in step S103, as described above, for example, music data having a music tempo that falls within a range of ± 5 of the user's operation tempo is searched. This is a process of searching for music data having a music tempo that falls within a predetermined range. Of course, music data having the same song tempo as the user's motion tempo is searched, music data having a song tempo equal to or higher than the user's motion tempo and not more than “+5” is searched, or the same as the user's motion tempo. It is also possible to search for music data having a music tempo of “−5” or higher. Such a range specification can be changed through the key operation unit 41.

  And the control part 10 judges whether the music of the tempo according to a user's operation | movement tempo was detected (step S104). When it is determined in step S104 that the music having the tempo corresponding to the user's operation tempo has been detected, the music data having the music tempo corresponding to the user's operation tempo is found in the search process in step S103. Is supplied to the audio signal output processing unit 31, reproduced, and output (sounded) through the speaker 32 (step S105).

  When a plurality of music data having a music tempo corresponding to the user's operation tempo is found in step S103, the control unit 10 determines music data (music) to be reproduced in a predetermined order in step S105. Play this. Specifically, according to a predetermined order such as the order in which the music tempo is close to the user's operation tempo, the predetermined genre order, the playback time is short, the title is in the order of 50 notes, or the like. The music data to be played back can be determined. Of course, a priority order is set in advance for each of the reproducible music data so that it can be followed, or as will be described later, the identification information of the replayed music data is retained as history information, Various methods can be used, such as giving priority to playback that has not been played back.

  When it is determined in step S104 that the music having the tempo corresponding to the user's operation tempo has not been detected, the control unit 10 controls the music reproduction data generating unit 22 to determine the user's operation tempo. Performs a process of searching for audio data having a tempo in which a difference from a fraction of an integer is within a predetermined range, or audio data having a tempo in which a difference from an integral multiple of the user's operation tempo is within a predetermined range, and corresponding audio data When it is detected, a process for reproducing it is performed (step S106). Details of the specific process in step S106 will be described later.

  Then, after the music data is reproduced for a predetermined time in the process of step S105, or when the detected music data is reproduced for a predetermined time in step S106 or the corresponding data cannot be detected, the control unit 10 controls, for example, the motion information analysis circuit 23 that receives the detection output from the motion information sensor 24, stops the user's motion (exercise), accepts a playback stop instruction input, or In step S106, it is determined whether or not a predetermined end event has occurred (eg, the corresponding data could not be detected) (step S107).

  If it is determined in step S107 that the end event has not yet occurred, the process from step S101 is repeated, and the music data to be reproduced is searched according to the newly calculated operation tempo for the user. Will be done. If it is determined in step S107 that a predetermined end event has occurred, the control unit 10 ends the process shown in FIG.

  In step S107, the motion information analysis circuit 23 that receives the detection output from the motion information sensor 24 is controlled, and the user's motion tempo is different from the motion tempo previously detected by a predetermined amount. When this occurs, it is possible to repeat the processing from step S101.

[Searching and playing music data]
Next, the music data search and reproduction process executed in step S106 of the flowchart shown in FIG. 3 will be described with reference to the flowcharts of FIGS.

  Here, as the process in step S106 shown in FIG. 3, as described above, as an example of the search / playback process, music data with a tempo whose difference from an integral part of the operation tempo is within a predetermined range is used. If the corresponding music data is not detected, search processing 1 for searching for music data having a tempo whose difference from an integer multiple of the operation tempo is within a predetermined range and the operation tempo of the user are used. A search process 2 in which a condition is determined and a search mode is selected according to a user's operation tempo to perform a search will be described.

[Search process 1]
FIG. 4 is a flowchart for explaining the search process 1 that can be executed in step S106 of the process shown in FIG. This search process 1 searches for music data having a tempo whose difference from (5) the integral part of the operation tempo described above is within a predetermined range, and if no corresponding music data is detected, A process for searching for music data having a tempo in which a difference from an integer multiple of the tempo is within a predetermined range is performed.

  In step S106 of the process shown in FIG. 3, when the process shown in FIG. 4 is executed, the control unit 10 controls the music reproduction data generation processing unit 22, for example, a music information storage unit. The music list created on the recording medium 21 is searched for music (music data) having a tempo corresponding to 1 / integer of the user's motion tempo calculated in step S102 of the process shown in FIG. (Step S201).

  The search process in step S201 is to search for music data having a music tempo that falls within a range of ± 5 that is an integral number of the user's operation tempo, as in the case of the process in step S103 shown in FIG. As described above, this is a process of searching for music data of a music tempo in which the difference from the integral part of the user's operation tempo is within a predetermined range.

  For example, when searching for music data whose tempo is “130” and the difference from the half of the user's operation tempo is ± 5, the user's operation tempo “130”. The tempo that falls within the range of ± 5 is the target tempo with respect to “65”, which is half the tempo of the song, so the song tempo is “60 to 70 (60 ≦ song tempo ≦ 70)”. Music data having a music tempo within the range is searched. In the music list shown in FIG. 2, music H is detected as music data to be reproduced.

  Of course, also in the search processing of step S201, music data having the same music tempo as the integral part of the user's operation tempo is retrieved, or equal to or greater than the integral part of the user's operation tempo. It is also possible to search for music data with a song tempo of “+5” or less, or search for music data with a song tempo equal to or less than an integral fraction of the user's operation tempo. is there. Such a range specification can be changed through the key operation unit 41.

  Then, the control unit 10 determines whether or not music data having a tempo corresponding to an integral part of the user's motion tempo has been detected in the search process of step S201 (step S202). If it is determined in step S202 that music data having a tempo corresponding to an integer times the user's operation tempo has been detected, the detected music data is determined as music data to be played back, and this is determined. Playback is performed (step S203), the processing shown in FIG. 4 is terminated, and the processing returns to the main processing shown in FIG.

  When a plurality of reproducible music data can be detected in the detection process in step S201, the control unit 10 determines music data (music) to be played in a predetermined order in step S203, Play this. Specifically, according to a predetermined order such as the order in which the music tempo is close to the user's operation tempo, the predetermined genre order, the playback time is short, the title is in the order of 50 notes, or the like. The music data to be played back can be determined. Of course, a priority order is set in advance for each of the reproducible music data so that it can be followed, or as will be described later, the identification information of the replayed music data is retained as history information, Various methods can be used, such as giving priority to playback that has not been played back.

  If it is determined in step S202 that music data having a tempo corresponding to an integral part of the user's motion tempo has not been detected, the control unit 10 controls the music reproduction data generation processing unit 22. For example, the music list created on the recording medium of the music information storage unit 21 is referred to search for music (music data) having a tempo corresponding to an integral multiple of the user's motion tempo calculated in step S102. (Step S204).

  In the search process in step S204, as in the case of the process in step S201 described above, the music tempo music data belonging to a range of ± 5 that is an integral multiple of the user's operation tempo is searched. This is a process of searching for music data of a music tempo in which a difference from an integer multiple of the operation tempo is within a predetermined range.

  For example, when searching for music data whose tempo is “150” and the difference between the user's motion tempo and twice the user's motion tempo is ± 5, the user's motion tempo “150” is doubled. Therefore, the tempo in the range of ± 5 is the target tempo, so that the tempo of the song is within the range of 295 to 305 (295 ≦ song tempo ≦ 305). In the case of the music list shown in FIG. 2, the music E is detected as the music data to be played back.

  Of course, also in the search process of step S204, music data having the same music tempo as the integral multiple of the user's motion tempo is retrieved, or the music tempo equal to or greater than the integer multiple of the user's motion tempo and equal to or less than “+5”. It is also possible to search for music data having a music tempo equal to or less than “−5” or less of an integer multiple of the user's operation tempo. Such a range specification can be changed through the key operation unit 41.

  Then, the control unit 10 determines whether or not music data having a tempo corresponding to an integer multiple of the user's motion tempo has been detected in the search process of step S204 (step S205). If it is determined in step S205 that music data having a tempo corresponding to an integer multiple of the user's operation tempo has been detected, the process proceeds to step S203, and the detected music data is determined as music data to be played back. Then, it is reproduced (step S203), the process shown in FIG. 4 is terminated, and the process returns to the main process shown in FIG.

  In the detection process of step S204, if a plurality of reproducible music data can be detected, the control unit 10 determines music data (songs) to be played back in a predetermined order in step S203. Play this. Specifically, as described above, the music tempo is close to the user's operation tempo, the genre order is predetermined, the playback time is short, the titles are in the order of 50 notes, etc. What is necessary is just to determine the music data to reproduce | regenerate according to the order decided beforehand. Of course, a priority order is set in advance for each of the reproducible music data so that it can be followed, or as will be described later, the identification information of the replayed music data is retained as history information, Various methods can be used, such as giving priority to playback that has not been played back.

  If it is determined in step S205 that music data having a tempo corresponding to an integral multiple of the user's operation tempo has not been detected, playback is possible, such as “There is no music data that can be played back”. An error output indicating that the music data cannot be reproduced because there is no music data is displayed on the display screen of the display unit 34 through the display circuit 33 (step S206), and the processing shown in FIG. Return to the main processing shown in FIG.

  As a result, first, when music data having a tempo corresponding to an integral number of an operation tempo of the user can be detected as a result of the search, the detected music data is reproduced and cannot be detected. If music data having a tempo corresponding to an integral multiple of the operating tempo of the user company is searched and the corresponding music data is detected, the detected music data can be played back. The

  Therefore, music data having a tempo synchronized with the operation tempo of the user can be searched and reproduced. In the case of the example shown in FIG. 4, music data having a tempo corresponding to an integral part of the user's motion tempo is first retrieved, and if it does not exist, it is an integral multiple of the user's motion tempo. The music data of the tempo according to was searched. However, it is not limited to this.

  On the other hand, first, music data having a tempo corresponding to an integral multiple of the user's motion tempo is searched, and if there is no music data having a tempo corresponding to an integral number of the user's motion tempo if there is no such data. You may make it search. Whether to prioritize music data with a tempo corresponding to an integral fraction of the user's motion tempo or to prioritize music data with a tempo according to an integer multiple of the user's motion tempo. It may be determined in advance by the manufacturer of the playback device, or may be selected and switched by the user through the key operation unit 41.

[Search process 2]
FIG. 5 is a flowchart for explaining the search process 2 that can be executed in step S106 of the process shown in FIG. This search process 2 reproduces music data with a faster tempo when walking slowly, or when playing music data with a slower tempo when running, the user's intention. Is considered that there is a possibility of inducing a sense of incongruity by inducing movement in the opposite direction.

  Specifically, as will be described in detail below, the search processing 2 defines a condition using the user's operation tempo, and an integral part of the user's operation tempo according to the user's operation tempo. 1 is determined whether to search for music data having a tempo within a predetermined range or to search for music data having a tempo within a predetermined range that is different from an integer multiple of the user's operation tempo. It is intended to perform a search.

  When the process shown in FIG. 5 is executed in step S106 of the process shown in FIG. 3, the control unit 10 firstly calculates the user's operation tempo calculated in step S102 of the process shown in FIG. Referring to FIG. 4, it is determined whether or not the user's motion tempo belongs to a predetermined walking tempo range (step S301).

  In general, the operation tempo when a person is walking is around “120”, and the walking tempo when a person is running is around “150”. Therefore, in this example, when the operation tempo is greater than “0” and less than “135”, it is determined as the walking tempo, and when the operation tempo is “135” or more, it is determined as the running tempo. To.

  Of course, this is only an example. For example, when the operation tempo is less than “150”, the walking tempo is determined, and when the operation tempo is “150” or more, the running tempo is determined. It is also possible to define the conditions.

  For this reason, in the determination process of step S301, when it is determined that the user's motion tempo is less than “135” and the walking tempo, the control unit 10 controls the music reproduction data generation device 22 to control, for example, music information. With reference to the music list created on the recording medium of the storage device unit 21, music (music data) with a tempo corresponding to an integral fraction of the user's motion tempo calculated in step S102 of the process shown in FIG. Is searched (step S302).

  The search process of step S302 is the same process as the search process of step S201 of the process described with reference to FIG. 4, and the tempo of music belonging to a range of ± 5 that is 1 / integer of the user's operation tempo. This is a process of searching for music data having a music tempo within which a difference from an integral number of the user's operation tempo is within a predetermined range, such as searching for music data.

  Of course, also in the search process of step S302, music data having the same music tempo as the integral part of the user's operation tempo is retrieved, or equal to or greater than the integral part of the user's operation tempo. It is also possible to search for music data with a song tempo of “+5” or less, or search for music data with a song tempo equal to or less than an integral fraction of the user's operation tempo. is there. Such a range specification can be changed through the key operation unit 41.

  Then, the control unit 10 determines whether or not reproducible music data having a target tempo has been detected in the search process of step S302 (step S303). If it is determined in step S303 that reproducible music data having the target tempo has been detected, the detected music data is determined as music data to be played back and played back (step S304). The process shown in FIG. 5 ends, and the process returns to the main process shown in FIG.

  When it is determined in step S303 that reproducible music data having the target tempo has not been detected, there is reproducible music data such as “There is no reproducible music data”. Therefore, an error output indicating that the music data cannot be played back is output to the display screen of the display unit 34 through the display circuit 33 (step S305), the processing shown in FIG. 5 is terminated, and the main data shown in FIG. Return to processing.

  When a plurality of reproducible music data can be detected in the detection process in step S302, the control unit 10 determines in advance in step S304 as in the process in step S203 shown in FIG. The music data (musical piece) to be played back is determined and played back. Specifically, according to a predetermined order such as the order in which the music tempo is close to the user's operation tempo, the predetermined genre order, the playback time is short, the title is in the order of 50 notes, or the like. The music data to be played back can be determined. Of course, other various methods may be used.

  If it is determined in step S301 that the user's movement tempo is not the walking tempo, the control unit 10 refers to the user's movement tempo calculated in step S102 of the process shown in FIG. Then, it is determined whether or not the operation tempo of the user belongs to a predetermined running tempo range (step S306).

  In the determination process of step S306, when the operation tempo of the user is “135” or more and it is determined that the user is the running tempo, the control unit 10 controls the music reproduction data generation processing unit 22, for example, music information The music list created on the recording medium of the storage device unit 21 is referred to search for music (music data) having a tempo corresponding to an integral multiple of the user's motion tempo calculated in step S102 (step S307).

  The search process in step S307 is similar to the process in step S204 shown in FIG. 4, in which music data having a music tempo belonging to a range of ± 5 that is an integral multiple of the user's operation tempo is searched. This is a process of searching for music data of a music tempo in which a difference from an integral multiple of the user's operation tempo is within a predetermined range.

  Of course, also in the search process of step S204, music data having the same music tempo as the integral multiple of the user's motion tempo is retrieved, or the music tempo equal to or greater than the integer multiple of the user's motion tempo and equal to or less than “+5”. It is also possible to search for music data having a music tempo equal to or less than “−5” or less of an integer multiple of the user's operation tempo. Such a range specification can be changed through the key operation unit 41.

  Then, the control unit 10 proceeds to the process of step S303, determines whether or not reproducible music data having the target tempo has been detected in the search process of step S307 (step S303), and determines the target tempo. When it is determined that reproducible music data has been detected, the detected music data is determined as music data to be played back, is played back (step S304), and the processing shown in FIG. Return to the main processing shown in FIG.

  When it is determined in step S303 that reproducible music data having the target tempo has not been detected, there is reproducible music data such as “There is no reproducible music data”. Therefore, an error output indicating that the music data cannot be played back is output to the display screen of the display unit 34 through the display circuit 33 (step S305), the processing shown in FIG. 5 is terminated, and the main data shown in FIG. Return to processing.

  Even when a plurality of reproducible music data can be detected in the detection process in step S307, the control unit 10 determines music data (music) to be played in a predetermined order in step S304, and Play this. Specifically, according to a predetermined order such as the order in which the music tempo is close to the user's operation tempo, the predetermined genre order, the playback time is short, the title is in the order of 50 notes, or the like. The music data to be played back can be determined. Of course, other various methods may be used.

  If it is determined in step S306 that the user's motion tempo is not a running tempo, the user's motion tempo is neither a walking tempo nor a running tempo. The reproduction data generation processing unit 22 is controlled, for example, a music list created on a recording medium of the music information storage device unit 21 is referred to, music data to be reproduced is determined under a predetermined condition, and this is reproduced. In this way (step S308), the process shown in FIG. 5 is terminated, and the process returns to the main process shown in FIG.

  As a result, when walking slowly, music data having a tempo in which the difference from an integral number of the user's motion tempo within a predetermined range is searched, so that the user's motion tempo during walking is retrieved. It is possible to prevent playback of music data with a fast tempo. In addition, when running, music data having a tempo in which the difference from the integral multiple of the user's motion tempo is within a predetermined range is searched, so music with a tempo slower than the user's motion tempo during running is searched. Data reproduction can be prevented. Therefore, it is possible to prevent the operation from being induced in the direction opposite to the user's intention, and to prevent the user from feeling uncomfortable.

  In the process shown in FIG. 5, it is determined whether or not the user's motion tempo is a walking tempo, and then whether or not the user's motion tempo is a running tempo. However, it is not limited to this. It may be determined first whether or not the user's motion tempo is a running tempo, and then whether or not the user's motion tempo is a walking tempo. That is, in FIG. 5, the execution timings of Step S301 and Step S302 and Step S306 and Step S307 may be interchanged.

  As described above, since the sound reproducing apparatus of this embodiment can search and reproduce music data having a tempo synchronized with the user's operation tempo, a sense of unity between the user's operation and the reproduced music can be obtained. Can be obtained.

  In addition, even when there is no audio data whose difference from the user's motion tempo is within a predetermined range, music data with a tempo that has a fixed relationship with the user's motion tempo can be selected and played back. The number of music data to be searched and reproduced according to the operation tempo can be increased.

  In the above-described embodiment, the case of 1/2 is used as an example of an integral multiple, and the case of double is used as an example of an integral multiple. However, it goes without saying that it is not limited to this. In the case of 1 / integer, 1/2 (1/2), 1/3 (1/3), 1/4 (1/4), 1/5 (1/5), Various values such as... Can be used, and in the case of an integral multiple, various values such as 2, 3, 4, 5,.

  Then, when it is a fraction of an integer, how many times it is used or when it is an integer multiple depends on the value that the user's motion tempo can take and the song tempo of various music data Thus, the manufacturer of the sound reproducing device is predetermined and set. Of course, this set value may be changed on the user side.

  The sound reproduction device according to the above-described embodiment has been described as a portable sound reproduction device. Specifically, a portable hard disk player, a portable MD (registered trademark) player, a semiconductor memory player, The present invention can be applied to various portable sound reproduction devices (music reproduction devices) such as a mobile phone terminal having a music data (music data) reproduction function.

  Further, in the above-described embodiments, the sound reproducing device is a portable device, and has been described as being suitable for use in reproducing and listening to music while exercising such as walking and jogging. However, the movement (exercise) performed by the user is not limited to walking and jogging. For example, it may be one of various actions (exercises) such as walking, walking, jogging, running, and dashing.

  In this case, (1) walking, (2) walking, (3) jogging, (4) running, (5) dash, the operating speed (moving speed) increases in the order of (1) to (5). This means that the load on the person performing the operation increases. However, because there are individual differences in the movement speed (movement speed) in these movements, it is not possible to define the speed in a general numerical manner, and the section corresponding to the speed of each movement has different movements before and after. It may overlap with the section according to the speed.

  The distinction between (1) walking, (2) walking, (3) jogging, (4) running, (5) dash is not only physically moving, but also so-called room runners and bicycles used indoors. Even when exercise is performed indoors using a type training machine or the like, it is also possible to specify the type of exercise according to the intensity.

  For example, when exercising using a bicycle-type training machine, if you pedal the pedal very slowly, (1) walk around, and (2) walk around when you pedal the pedal so that the load of walking is applied. (3) When jogging the pedal so that a load of aerobic jogging is applied (3) When jogging, and when pedaling with a larger load, (4) Running or (5) Dash Even if the type of exercise performed by the user is different, (1) walking, (2) walking, (3) jogging, (4) running, 5) The exercise performed by the user can be managed by dividing the dash.

  Therefore, in the apparatus to which the present invention is applied, such as a sound reproducing device, the intensity of exercise is managed by the following categories: (1) walking, (2) walking, (3) jogging, (4) running, and (5) dash. In order for the user to perform exercises according to the purpose without difficulty, audio data such as music is reproduced and provided to the user to assist the user in performing various exercises. be able to.

  That is, the user's actions may be walking, walking, jogging, running, dash, bicycle jumping, boating, jumping such as jumping rope, aerobics dance, etc. As described above for the intensity of motion (exercise), when performing various motions by dividing (1) walking, (2) walking, (3) jogging, (4) running, and (5) dash. This invention can be used.

  In addition, in the case of playing a song corresponding to the existing music data of the tempo corresponding to the user's operation tempo, or a song having a tempo synchronized with the user's operation tempo, information indicating the operation tempo and the reproduced music data One or both of the identification information and the non-volatile memory such as an EEPROM (Electrically Erasable and Programmable ROM) provided in the control unit 10 or a recording medium of the music information storage unit 21 or a storage unit 53 For example, it may be stored as history information. In this way, by storing history information relating to the tempo, it is possible to grasp how long and what tempo operation the user has continued after the operation (exercise) has ended. It can be used for self-motion (exercise) management and analysis.

  Note that the sound reproducing device according to the embodiment described above is applied with the sound reproducing method according to the present invention. In particular, the processes described with reference to the flowcharts of FIGS. 3, 4, and 5 are based on the present invention. This is a process according to the sound reproduction method. Moreover, the sound reproduction program according to the present invention can be realized by creating a program for executing the processing described with reference to the flowcharts of FIGS. 3, 4, and 5. By mounting the sound reproduction program according to the present invention on various sound reproduction apparatuses, the sound reproduction apparatus of the present invention can be realized relatively easily.

It is a block diagram for demonstrating the sound reproduction apparatus with which one Embodiment of this invention was applied. It is a figure for demonstrating an example of the music list which is a list of the music data which can be reproduced | regenerated. It is a flowchart for demonstrating operation | movement in the case of reproducing | regenerating the music of the tempo according to a user's operation | movement tempo. It is a figure for demonstrating an example of the process performed in step S106 shown in FIG. It is a figure for demonstrating the other example of the process performed in step S106 shown in FIG.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 10 ... Control part, 11 ... CPU, 12 ... ROM, 13 ... RAM, 21 ... Music information storage part, 22 ... Music reproduction data generation part, 23 ... Movement information analysis circuit, 24 ... Movement information sensor, 31 ... Voice Signal output processing unit, 32... Speaker, 33... Display circuit, 34... Display unit, 41 .. key operation unit, 42 .. microphone, 43 .. audio signal input processing unit, 51. Storage unit 61: Communication I / F 62: Transmission / reception circuit 63: Transmission / reception antenna

Claims (13)

Detection means for detecting a user's movement tempo;
First search means for searching for music data having a tempo that is different from a user's motion tempo detected by the detection means within a predetermined range;
A first reproduction means for reproducing the detected music data when the first search means detects tempo music data whose difference from the user's motion tempo is within a predetermined range;
When the first search means does not detect music data having a tempo that is different from the user's motion tempo within the predetermined range, the difference between the user's motion tempo and the integral multiple of the user's motion tempo is within the predetermined range. Second search means for searching for one or both of music data having a tempo and a music data having a tempo in which a difference between the user's operation tempo and a fraction of an integer is within a predetermined range;
A sound reproduction apparatus comprising: second reproduction means for reproducing the detected music data when the second search means detects music data of a corresponding tempo. The sound reproducing device according to claim 1,
The user's motion whose motion tempo is detected by the detecting means is at least one of walking, jogging, running, and dash. The sound reproducing device according to claim 1,
The sound reproducing apparatus according to claim 1, wherein the detecting means is configured using one of an acceleration sensor, a vibration sensor, and a pressure sensor. The sound reproducing device according to claim 1,
A sound reproducing apparatus comprising storage means for storing and holding one or both of information indicating a user's operation tempo and information about reproduced music data as history information. The sound reproducing device according to claim 4,
The storage device is any one of an optical disk, a magneto-optical disk, a magnetic tape, a hard disk, a semiconductor memory, and an IC card. The sound reproducing device according to claim 1,
Music data storage means for storing music data;
A connection means for enabling connection to a music database provided on a network,
The search means can search music data stored in the music data storage means and music data in the music database on the network that can be connected through the connection means. ,
The sound reproduction apparatus according to claim 1, wherein the music data storage means uses any one of an optical disk, a magneto-optical disk, a magnetic tape, a hard disk, a semiconductor memory, and an IC card as a recording medium. A detection process for detecting a user's movement tempo;
A first search step of searching for music data having a tempo in which the difference from the user's motion tempo detected in the detection step is within a predetermined range;
A first playback step of playing back the detected music data when detecting the tempo music data whose difference from the user's operation tempo is within a predetermined range in the first search step;
In the first search step, when music data having a tempo that is different from the user's motion tempo within a predetermined range is not detected, the difference between the user's motion tempo and the integer multiple of the user's motion tempo is within the predetermined range. A second search step for searching for one or both of music data having a tempo and a music data having a tempo in which a difference between the user's operation tempo and a fraction of an integer is within a predetermined range;
A sound reproduction method comprising: a second reproduction step of reproducing the detected music data when music data of a corresponding tempo is detected in the second search step. The sound reproduction method according to claim 7,
The sound reproduction method according to claim 1, wherein the user's motion for detecting the motion tempo in the detection step is at least one of walking, jogging, running, and dash. The sound reproduction method according to claim 7,
In the detecting step, the user's operation tempo is detected using one of an acceleration sensor, a vibration sensor, and a pressure sensor. The sound reproduction method according to claim 7,
A sound reproduction method comprising a history recording step of recording one or both of information indicating a user's operation tempo and information about reproduced music data as history information in a storage means. It is the sound reproduction method of Claim 10, Comprising:
The sound reproducing method according to claim 1, wherein the storage means is one of an optical disk, a magneto-optical disk, a magnetic tape, a hard disk, a semiconductor memory, and an IC card. The sound reproduction method according to claim 7,
In the search step, the music data stored in the music data storage means of the own device and the music data in the music database on the network that can be connected through the connection means are to be searched,
The sound reproduction method according to claim 1, wherein the music data storage means uses any one of an optical disk, a magneto-optical disk, a magnetic tape, a hard disk, a semiconductor memory, and an IC card as a recording medium. In a computer mounted on an audio playback device that plays back music data,
A detection step for detecting a user's movement tempo;
A first search step of searching for music data having a tempo in which the difference from the user's motion tempo detected in the detection step is within a predetermined range;
A first reproduction step for reproducing the detected music data when the difference between the operation tempo of the user is within a predetermined range and the detected music data is detected in the first search step;
In the first search step, when music data having a tempo that is different from the user's motion tempo within a predetermined range is not detected, the difference between the user's motion tempo and the integral multiple of the motion tempo is within the predetermined range. A second search step of searching for one or both of music data having a tempo and a music data having a tempo in which a difference between the user's operation tempo and an integer is within a predetermined range;
A sound reproduction program that, when music data of a corresponding tempo is detected in the second search step, executes a second reproduction step of reproducing the detected music data.

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