JP2006293697A5 - - Google Patents

Description

In-car music device

The present invention relates to an in- vehicle music apparatus that automatically performs music selection and reproduces the selected music along with narration.

In recent years, an increasing number of in- vehicle music apparatuses are capable of capturing a plurality of CDs (Compact Discs) at once, such as a CD changer, and those capable of storing and reproducing a large amount of music data by providing a hard disk. When a large amount of music data is handled in this way, it is complicated for the listener himself to select each song he / she wants to listen to from a huge list of songs, especially in an environment mounted on a car. It is difficult to perform input operation. For this reason, many in-vehicle audio apparatuses have an automatic music selection function that automatically selects music according to a predetermined algorithm, rather than having the listener select music. The simplest automatic music selection by this algorithm is random music selection that selects music randomly. As an automatic music selection based on an algorithm for selecting music based on knowledge, there is an automatic music selection method suitable for the listener's taste and season when the image or season of the favorite song is input. However, even if using this knowledge-based algorithm, if you try not to select only the same song, you will end up performing a random song selection. It is difficult to realize the difference in the quality of music selection from the case of performing music. Separately from this, for the purpose of raising the atmosphere of the place, a karaoke device (for example, refer to Patent Document 1) that inserts a narration that introduces the title of a song when playing a song, impression on a song to be distributed, A content output device (see, for example, Patent Document 2) that provides an episode and the like has also been devised.

Japanese Patent No. 3551631 JP 2004-62769 A

As described above, a conventional in- vehicle music apparatus having an automatic music selection function provides narration intriguing the listener, such as the reason for selecting the music, even if automatic music selection is performed using a knowledge-based algorithm. I couldn't. In addition, karaoke devices and content output devices that insert narrations cannot provide appropriate narration that takes into account the situation such as the place and time of the listener.

  The present invention has been made to solve such a conventional problem. When a song automatically selected from a large amount of music data is played back, the introduction of the reason for selecting the song and the listener have been introduced. It is an object of the present invention to provide an in-vehicle music device that can improve the interest and enjoyment of a listener by inserting a narration in consideration of the situation such as place and time.

The in-vehicle music apparatus according to the present invention includes an automatic sound selection unit, and the automatic sound selection unit selects general-purpose audio data when time data and position data satisfy predetermined conditions.

  With this configuration, the in-vehicle music device of the present invention selects not only a talk corresponding to time data and position data but also a general-purpose talk that does not depend on time data and position data for replacement, and immediately before reproduction. Since it is possible to switch between the two as required, even if there is a temporal or spatial gap between the automatic music selection time point and the playback time point, it is possible to prevent the content of the talk to be played from feeling uncomfortable. In addition, if the automatic music selection time and playback time are shifted, the automatic music selection processing with a high processing load is performed at startup, and only a light processing is performed immediately before playback, so there is a delay between the song and the talk. It is possible to prevent the occurrence of silent sections.

  The present invention can improve the interest and enjoyment of the listener by inserting a narration such as an introduction of the reason for music selection when playing a music automatically selected from a large amount of music data. It is possible to provide an in-vehicle music device having the above effects.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

  FIG. 1 is a block diagram showing the overall configuration of an in-vehicle music apparatus according to an embodiment of the present invention. The in-vehicle music apparatus according to the present embodiment is used in-vehicle, and includes a navigation unit 100 for acquiring the current location of the vehicle and an audio unit 200 for reproducing a song.

  FIG. 2 is a block diagram showing a detailed configuration of the in-vehicle music apparatus according to the present embodiment. The navigation unit 100 of the in-vehicle music device includes a map data storage unit 2, a position detection sensor unit 3, a position data acquisition unit 4, and a time data acquisition unit 5.

  The map data storage unit 2 is composed of a hard disk and stores digital map data mainly composed of a road network and other data. The digital map data stores information data relating to the road network structure and road attributes, and one type of information is road type information. The road type information is an identification code for classifying the type of road. Examples of the type include “highway”, “road along the sea”, “mountain road”, and “other roads”.

  The position detection sensor unit 3 is a sensing means for acquiring the position coordinates of the current location, and includes a GPS antenna, a receiving circuit, a vehicle speed pulse detection circuit, a gyro sensor, and the like. The detailed description is omitted.

  The position data acquisition unit 4 uses the map data stored in the map data storage unit 2 and the position coordinates of the current location acquired by the position detection sensor unit 3 to obtain data relating to the road type information of the currently traveling road. Acquired as position data. In the present embodiment, the road type information is any one of “highway”, “road along the sea”, “mountain road”, and “other roads”. The position data acquisition unit 4 constitutes position data acquisition means of the present invention.

  The time data acquisition unit 5 uses the timer data transmitted from the timer in the system of the navigation unit 100 to acquire time data at the time when the automatic music selection request is made. The time data includes the date and time. The time data acquisition unit 5 constitutes time data acquisition means of the present invention.

  The audio unit 200 of the in-vehicle music apparatus includes an input operation unit 1, a music data storage unit 6, a music automatic music selection unit 7, a music selection reason acquisition unit 8, a talk data storage unit 9, a talk automatic selection unit 10, and a playlist generation. Unit 11, playlist reproduction unit 12, talk reproduction determination unit 13, and audio output unit 14.

  The input operation unit 1 is an input interface for giving a music reproduction instruction from the user to the apparatus. Specifically, a liquid crystal display and a touch sensor are provided, and input is performed by the user selecting a desired menu from the menus displayed on the screen and touching the screen. In order to perform automatic music selection processing in this embodiment, the user selects the “automatic music selection” menu displayed on the screen.

  The music data storage unit 6 is composed of a hard disk, and stores music management data, music data, and other data. The music data storage unit 6 constitutes music data storage means of the present invention.

  The music management data stored in the music data storage unit 6 and the data structure of the music data will be described with reference to FIG. The music data of a song is stored as compressed audio data such as AAC (MPEG-2 Advanced Audio Coding). However, if there is no restriction on the capacity of the hard disk, it may be stored as uncompressed audio data. As shown in FIG. 4A, the music management data includes a music ID, a title, an artist name, a music attribute code, and a music data address. The music ID is an identification code for managing music data. The title is character string data for representing the title of the song, and the artist name is character string data for representing the corresponding artist. The music attribute code is a code for indicating an attribute that images the music. The music data address is address data for indicating the storage location of the music data of the song, and the corresponding music data shown in FIG. 4B can be read via the music management data with reference to this address data.

  An example of the music attribute code will be described with reference to FIG. As shown in FIG. 5, the attribute type is suitable for listening to the season, such as spring, summer, autumn, winter, etc., and for the time zone such as morning, noon, night, etc. Or which road is suitable for listening while driving, such as a highway, a road along the sea, and a mountain road.

  The automatic music selection unit 7 automatically selects music data of a predetermined number of pieces of music from the music data stored in the music data storage unit 6 when an automatic music selection request is made by the input operation unit 1 from the user. To do. The automatic music selection section 7 constitutes the automatic music selection means of the present invention. In the present embodiment, the number of songs to be automatically selected is three, but it is needless to say that the number of songs to be automatically selected may be arbitrarily set by the user, for example. When automatic music selection is performed, the position data acquired by the position data acquisition unit 4 and the time data acquired by the time data acquisition unit 5 are used. Of the three songs to be selected, the first song is selected using the time in the time data as a keyword, the second song is similarly selected using the date in the time data as a keyword, and the third song is the position data as a keyword. I will select a song. For example, the date and time acquired by the time data acquisition unit 5 is “August 1, 2005, 7:00 am”, the running road acquired by the position data acquisition unit 4 is “road along the sea”, and music data When the music data stored in the storage unit 6 is as shown in FIG. 4, the following three music data are selected.

First track: <Music ID> 2 <Title> Morning Second track: <Music ID> 5 <Title> Summer Third track: <Music ID> 0 <Title> Sea

  The music selection reason acquisition unit 8 acquires the music selection reasons for the three songs selected by the automatic music selection unit 7. The music selection reason acquisition unit 8 may extract the data of the music attribute code assigned to each selected music as it is and acquire it as the reason for music selection. In this embodiment, when the selected songs are the above-mentioned three songs, the reason for selecting the first song is “a song suitable for morning”, and the reason for selecting the second song is “a song suitable for summer”, 3 The reason for selecting the song is “Song suitable for roads along the sea”. The music selection reason acquisition unit 8 constitutes a music selection reason acquisition means of the present invention.

  The talk data storage unit 9 comprises a hard disk, and stores talk management data, talk talk data, and other data. The talk data storage unit 9 constitutes music data storage means of the present invention. The data structure of talk management data and talk data will be described with reference to FIG. Like the music data, the talk data is stored as compressed audio data such as AAC. However, if there is no restriction on the capacity of the hard disk, it may be stored as uncompressed audio data. As shown in FIG. 6A, the talk management data is composed of a talk ID and a talk data address. The talk ID is an identification code for managing talk data. The talk data address is address data for indicating the storage location of the talk data, and the corresponding talk data shown in FIG. 6B can be read via the talk management data by referring to the address data.

  The talk automatic selection unit 10 automatically selects the talk data of the talk to be reproduced from the talk data stored in the talk data storage unit 9 before the reproduction of each song selected by the music automatic music selection unit 7. As information for selecting the talk data, data of a music attribute code indicating the reason for music selection of each song acquired by the music selection reason acquisition unit 8 is used. This music attribute code becomes the talk ID of the talk data to be selected as it is. Therefore, in the above-described example, the talk data with the talk ID = 4 is inserted as the talk inserted before the first song, and the talk data with the talk ID = 1 is entered before the third song as the talk inserted before the second song. Talk data with a talk ID = 8 is selected as the talk to be inserted. Furthermore, talk data with a talk ID = 10 is selected as an alternative talk for each talk. The talk data with the talk ID = 10 is general-purpose talk data that can be used regardless of the date, time, and place. Thus, it is reproduced when it is determined that the alternative talk should be reproduced. The details of the alternative talk will be described later. The talk automatic selection unit 10 constitutes a voice automatic selection means of the present invention.

  The playlist generation unit 11 creates a playlist in which the music selected by the automatic music selection unit 7 and the talk selected by the automatic talk selection unit 10 are arranged. Specifically, as shown in FIG. 7, the data for 6 tracks including the talk and the music are arranged in the order of the track number, the track code, the music / talk ID, and the alternative talk ID (only in the case of the talk track). The track number is a code indicating the order of the tracks, and is composed of six tracks 1 to 6 in the present embodiment. The track code is a code for indicating whether the track corresponds to either talk or song data. When the track code is 0, the talk track corresponds to the talk data. When the track code is 1, the music track corresponds to the music data. Represents. The music / talk ID represents either a talk ID or a music ID. When the track code is 0, the alternative talk ID is arranged after the talk ID, and the talk ID of the alternative talk data is stored here.

  The playlist reproduction unit 12 reproduces talk or music according to the playlist created by the playlist generation unit 11. However, regarding the talk, the talk data stored in the play list is not always reproduced as it is, but is reproduced as it is only when it is determined by the talk reproduction determination unit 13 and it can be reproduced as it is. On the contrary, when the talk reproduction determination unit 13 determines that the reproduction should not be performed as it is, the talk data of the alternative talk is reproduced.

  The talk reproduction determination unit 13 determines whether or not the talk data can be reproduced as it is immediately before the talk data in the playlist is reproduced. For the determination, the time data at the time of reproduction acquired by the time data acquisition unit and the position data at the time of reproduction acquired by the position data acquisition unit are used. This is because the talk handled by the in-vehicle music device according to the present embodiment includes dialogues related to temporal information and positional information. Therefore, when the talk data is selected by the talk automatic selection unit and the selected talk This is because when the time and place are greatly changed from the time when the data is actually reproduced, there is a case where the content of the talk does not match the situation of the place. For example, in the above-mentioned example, since the time when the talk data was selected was “7:00 am”, as a talk to be inserted before playing the first song, “This song that is perfect for a refreshing morning” Talk data "I will deliver" was selected. However, if playback is paused before the talk is played and playback is resumed 12 hours later, the talk playback time will be “7:00 pm” and the above talk will not match the situation. Become. Similarly, in the above-described example, since the road running at the time of selecting the talk data was a “road along the sea”, the talk to be inserted before the reproduction of the third song is “ Talk data "I will deliver this song that fits perfectly" was selected. However, if the playback is paused before the talk data is played, and the playback is resumed after passing through the road along the sea and entering the city, the above talk does not match the situation. In such a case, the general-purpose talk data “Next, I will deliver this song” selected as the alternative talk is played back. Generally, the search process is a process of selecting corresponding data from a huge database, so that the processing load for performing the search process increases as the amount of data increases. Accordingly, if such processing with a high processing load is performed during playback of a playlist, a time difference occurs between talks, and the processing time is extended. For this reason, in the present embodiment, processing that takes processing time is performed at the time of music selection, the validity is evaluated immediately before playing a track in the playlist, and there is a large difference in time data or position data from the time of selection. Only in the case where there is, the alternative talk data of the general-purpose talk selected in advance is reproduced. The talk reproduction determination unit 13 constitutes a talk reproduction determination unit of the present invention.

  The audio output unit 14 includes an audio amplifier and a speaker, and outputs talk and music from the talk data and music data according to the processing contents of the playlist reproduction unit 12 and the talk reproduction determination unit 13 described above.

  In the present embodiment, the automatic music selection section 7, the selection reason acquisition section 8, the talk data storage section 9, the automatic talk selection section 10, the playlist generation section 11, the playlist reproduction section 12, and the talk reproduction determination section 13 are a CPU. (Central Processing Unit), ROM (Read Only Memory), HDD (Hard Disc Drive), RAM (Random Access Memory) and other hardware (hardware) and software stored in the ROM or HDD. Of course, it does not prevent the case where the present invention is entirely configured by hardware. The same applies to the “control unit”.

  Next, the operation of the on-vehicle music apparatus configured as described above will be described with reference to the flowchart of FIG.

  First, it is determined whether or not the user has made an input requesting automatic music selection to the input operation unit 1. If there is no input, the process returns to the input waiting state, and if there is an input, the process proceeds to the next step (step S101).

  Next, if it is determined in step S101 that there is an input requesting automatic music selection, the automatic music selection unit 7 performs automatic music selection processing for the music. In this case, as described above, the automatic music selection unit 7 selects the position data acquired by the position data acquisition unit 4 and the time acquired by the time data acquisition unit 5 from the music data stored in the music data storage unit 6. Music that is closely related to the data is automatically selected (step S102).

  Next, the music selection reason acquisition unit 8 obtains the reason for music selection of each song selected by the automatic music selection unit 7 in step S102 (step S103).

  Next, the talk automatic selection section 10 has talk data having contents suitable for explaining the reason for music selection acquired by the music selection reason acquisition section 8 in step S103 from the talk data stored in the talk data storage section 9. Is automatically selected. At the same time, the talk automatic selection unit 10 also selects alternative talk data for each talk. The detailed contents of the selection process are as described above (step S104).

  Next, the playlist generating unit 11 generates a playlist in which the music selected in step S102 and the talk data selected in step S104 are arranged (step S105).

  Next, the playlist reproduction unit 12 reproduces the playlist generated in step S105. When the track in the playlist is a talk track, the process proceeds to step S107 (step S106), and the talk reproduction determination unit 13 determines the time data and position data at that time, and the time data and position data when the talk data is selected. It is determined whether or not the change in the number is large (step S107). If it is determined that the change between the time data and position data at that time and the time data and position data at the time of selecting the talk data is large, the talk reproduction determination unit 13 selects an alternative talk (step S108). If it is determined that this is not the case, the talk data is selected as it is and reproduced respectively (step S109). The change in time data is defined as the change of the season of spring, summer, autumn, and winter for dates, and the change of morning, noon, and night for times. . The spring category is from 3/1 to 5/31, the summer category is from 6/1 to 9/30, the autumn category is from 10/1 to 11/30, and the winter category is from 12/1. Define up to 2/28 respectively. The morning section is defined as 4:00 am to 11:59 am, the day section is defined as 12:00 pm to 5:59 pm, and the night section is defined as 6:00 pm to 3:59 am. To do. Also, a large change in position data is defined as a change in the type of road on which the vehicle travels. The type of road is as described above.

  Next, it is determined whether or not the playlist is the last track (step S110). If it is determined that the playlist is the last track, the process ends. If not, the process returns to step S106 and the process is repeated. .

  Thus, according to the in-vehicle music apparatus of the present embodiment, automatic music selection can be performed in consideration of the location and time of the listener. In addition, since the talk that takes into account the location and time of the listener can be played, when you play the selected song, introduce the song using the talk that is appropriate for the location and time of the listener be able to.

  As described above, according to the in-vehicle music device of the present invention, when a song automatically selected from a large amount of music data is played back, the situation of the listener, such as introduction of the reason for selecting the song, is described. By inserting a talk that takes into account, the interest and enjoyment of the listener can be improved.

  In this embodiment, the content of the talk introducing the song becomes the reason for selecting the song, so that the listener can easily know why the song to be played later has been automatically selected. You can enjoy an automatic music selection function that is clearly different from random random music selection. For example, if the listener activates the in-vehicle music device of this embodiment and requests automatic music selection playback, the music is selected using the attribute information of the music, and then the music suitable for the morning is selected. Before the song is played, the talk “I will deliver this song, perfect for a refreshing morning” is played.

  Furthermore, in this case, when the time elapsed from when the user gives a playback request for the automatic song selection function to when the music is actually played is large, for example, the on-board music device is activated early in the morning to automatically select the song. When the on-vehicle music device is turned off immediately after the function is activated, and then turned on again at night to resume playback, the playback resumes from the middle of the song that was playing when the power was turned off. Then, after the song has finished playing and before playing the next song, select the alternative talk because the current time is at night, and "The next song is my recommended song. Will be delivered, so the listener can listen to the talk and the song without any discomfort. Furthermore, in this case, the process for searching for the optimum talk data at that time is not performed again from the huge audio database between the previous song and the next song. A silent section extending between the previous song and the talk with time is not generated.

  In the present embodiment, the music data storage unit 6 is composed of a hard disk. However, the present invention is not limited to this, and any music data storage unit and music data can be stored. Any storage medium such as a removable CD may be used.

  In the present embodiment, the music data of the music used in the automatic music selection has been described with reference to FIG. 4, but the present invention is not limited to this. Further, the music data storage unit 6 may be provided with a function of adding or deleting a song recorded from a music CD.

  Further, although the music attribute code used in the present embodiment has been described with reference to FIG. 5, the present invention is not limited to this, and an attribute that can image music and at the same time indicates the reason for music selection. It goes without saying that any music attribute code may be set as long as it represents information.

  Further, the talk data used in the present embodiment has been described with reference to FIG. 6, but the present invention is not limited to this, and any dialogue as long as it corresponds to the music to be played back. Or other types of talk data may be prepared.

  Further, the playlist created in the present embodiment has been described with reference to FIG. 7, but the present invention is not limited to this, and the number of songs to be automatically selected is not limited to this. Absent. Furthermore, it goes without saying that the talk inserted before the reproduction of the music may be omitted as necessary.

  In addition, as an application of the present embodiment, an FM multiplex receiver for receiving data such as traffic information, weather information, news, music information distributed from FM broadcast stations to FM radio waves is provided and received. The data may be decoded and converted into a talk ID of talk data stored in the talk data storage unit 9, and a playlist may be configured using the converted talk ID. For example, assume that data received from FM multiplexing is as shown in FIG. In this case, the received data is composed of a data type code, the number of data, and a sequence of data. When the data type code is a code representing “weather data”, the data sequence further includes an announcement code, a region code, and a weather code. Expressed in a line. The meanings of these codes are as shown in FIG. If each of these codes is defined so as to correspond to the talk ID stored in the talk data storage unit 9, it can be converted into talk data corresponding to each code as shown in FIG. After conversion to talk data, these talks are added to the playlist as shown in FIG. In this case, the talk data of “The weather information is delivered here. A thunderstorm warning has been issued to Aomori Prefecture” is the talk data of track 3 between the songs of track 2 and track 4. Inserted. In this way, when data on information about traffic, weather, news, etc. is acquired by broadcasting or communication, the listener can only listen to music by playing these data with smooth voices between songs. It is possible to know various real-time information. The FM multiplex receiver constitutes external data acquisition means of the present invention.

  In addition, as a variation of the talk content inserted between songs, for example, the artist's birthday, debut time, episodes, etc. may be introduced in the talk to provide various background knowledge about music. .

  According to the in-vehicle music device of this embodiment, the listener can easily know the reason why the music is selected by inserting a narration that introduces the background of the selected music between the automatically selected songs. It is possible to enjoy an automatic music selection function that is clearly different from simple random music selection. Especially in an in-vehicle environment, it is difficult to perform complicated input operations to manually select the songs you want to listen from a huge list of songs, and the intelligent music automatic music selection method is strong. It is desired. By combining this intelligent automatic music selection and narration as described above, it is possible to provide added value different from random music selection. For example, by introducing the artist's birthday, debut time, episode, etc. through narration, he can accumulate various background knowledge about music and enjoy music more.

  In addition, when data related to traffic, weather, news, etc. is acquired by broadcasting or communication, the data can be played between smooth songs in between the songs so that the listener can not only listen to the music but also various real-time data. You can know the information. The media that can listen to both music and real-time information include radio and television. However, audio that uses storage media such as cassette player, MD player, CD player, and audio with a hard disk can be used. This has not been realized so far and can produce groundbreaking effects.

  As described above, the in-vehicle music device according to the present invention inserts a narration such as introduction of the music selection reason of the music when playing the music automatically selected from a large amount of music data, It has the effect of improving the listener's interest and enjoyment. For example, it has a function to automatically select and play a large amount of music data with a large-capacity storage medium such as a car audio or car navigation system, especially a hard disk drive. Useful for audio devices with

The block diagram which shows the whole structure of the vehicle-mounted music apparatus of one embodiment of this invention The block diagram which shows the detailed structure of the vehicle-mounted music apparatus shown in FIG. Flow chart for explaining the operation of the in-vehicle music apparatus shown in FIG. The figure which shows the data structure of the music management data and music data used with the vehicle-mounted music apparatus shown in FIG. The figure which shows the example of the music attribute code used with the vehicle-mounted music apparatus shown in FIG. The figure which shows the data structure of the talk management data and talk data which are used with the vehicle-mounted music apparatus shown in FIG. The figure which shows the structure of the play list used with the vehicle-mounted music apparatus shown in FIG. The figure which shows the data structure of talk management data and talk data of an application example The figure which shows the structure of the play list of the application example The figure which shows the data composition of the received data and the example of the code

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Input operation part 2 Map data memory | storage part 3 Position detection sensor part 4 Position data acquisition part (position data acquisition means)
5 Time data acquisition unit (time data acquisition means)
6 Music data storage (music data storage means)
7 Automatic music selection section (automatic music selection means)
8 Music selection reason acquisition part (music selection reason acquisition means)
9 Talk data storage (voice data storage means)
10 Talk automatic selection part (voice automatic selection means)
DESCRIPTION OF SYMBOLS 11 Playlist production | generation part 12 Playlist reproduction part 13 Talk reproduction | regeneration determination part (voice reproduction | regeneration determination means)
14 Audio output unit 100 Navigation unit 200 Audio unit

Claims (2)

Time data acquisition means for acquiring date and time data, position data acquisition means for acquiring the vehicle position, music data storage means for storing a plurality of music data having attribute information, and stored in the music data storage means Music for automatically selecting music data stored in the music data storage means based on the date and time data acquired by the time data acquisition means, the position data acquired by the position data acquisition means, and the attribute information from among music data Automatic music selection means; music selection reason acquisition means for acquiring the reason for music selection by the music automatic music selection means from the attribute information; audio data storage means for storing audio data; and music selection reason acquisition means from the audio data storage means. Audio automatic selection means for selecting audio data corresponding to the reason for the acquired music selection; and music data selected by the automatic music selection means. And a audio reproducing means for reproducing the audio data the audio automatic selection means selects,
The voice automatic selection means selects general-purpose voice data when the time data acquired by the time data acquisition means and the position data acquired by the position data acquisition means satisfy a predetermined condition. Music device. It further comprises external data acquisition means for acquiring data from the outside,
The in-vehicle music apparatus according to claim 1, wherein the sound data storage unit stores sound data obtained by converting the external data acquired by the external data acquisition unit into sound.