JP2022168205A - Reproduction control device, reproduction control system, reproduction control method, program, and recording medium - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide reproduction control device and system, a reproduction control method, program, and recording medium that can prevent a person from being confused or feeling uncomfortable when reproducing content, and can prevent an apparatus from malfunctioning in response to a voice recognition input .

SOLUTION: A reproduction control device includes: a reproduction control unit 10 that controls reproduction of a sound source; and a specific sound detection unit 17 that detects a specific sound from the sound source. In a case where the specific sound has been detected from the sound source, the reproduction control unit performs acoustic processing on at least a portion including the specific sound in the sound source.

SELECTED DRAWING: Figure 1

COPYRIGHT: (C)2023,JPO&INPIT

Description

The present invention relates to a reproduction control device, a reproduction control system, a reproduction control method, a program, and a recording medium for content such as music.

Conventionally, when it is detected that duplicate songs are stored in a portable audio player, it has been proposed to analyze the songs and leave only songs with better sound quality (Patent document 1).

JP 2009-145465 A

Content that includes sound, such as music or videos, includes environmental sounds such as the sirens of ambulances and police cars that you hear in your daily life, emergency sounds such as warning sounds or SOS sounds in Morse code, and emergency sounds. Sounds that people perceive as dangerous, such as brake sounds or gunshot sounds, or human voices, such as dialogue, may be included.

For example, when the content is played back, the user who hears these sounds included in the content may be confused or uncomfortable because he/she cannot judge whether the sound is the sound of the real world or the sound of the content. . Also, for example, the sound in the content may be picked up by a device that supports voice recognition input, causing the device to malfunction.

For example, it is conceivable that if the content includes lines, the lines may be picked up by the device, and an unintended function may be activated. Another possible example is the possibility that a siren is included in the content and a device that picks up the siren incorrectly displays that an emergency vehicle is approaching.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned points, and is intended to prevent confusion or discomfort during playback of content, and to prevent devices that support voice recognition input from malfunctioning. It is an object to provide a reproduction control device and system, a reproduction control method, a program, and a recording medium capable of performing the above.

In the invention according to claim 1 of the present application, the reproduction control device includes a reproduction control unit that controls reproduction of a sound source, and a specific sound detection unit that detects a specific sound from within the sound source, and the reproduction control unit includes: The reproduction control apparatus is characterized in that, when the specific sound is detected from within the sound source, acoustic processing is applied to at least a portion of the sound source that includes the specific sound.

Further, the invention according to claim 6 of the present application comprises a sound source reading unit that reads a sound source, a specific sound detection unit that detects the specific sound from the read sound source, and a reproduction control unit that controls reproduction of the sound source. and wherein, when the specific sound is detected from within the sound source, the reproduction control unit performs acoustic processing on at least a portion of the sound source that includes the specific sound. be.

Further, the invention according to claim 7 of the present application provides a step in which a reproduction control unit controls reproduction of a sound source, a step in which a specific sound detection unit detects a specific sound from within the sound source, and a step in which the reproduction control unit detects the specific sound. is detected from within the sound source, subjecting at least a portion of the sound source containing the specific sound to acoustic processing.
Further, the invention according to claim 8 of the present application provides the computer with a step of controlling reproduction of a sound source, a step of detecting a specific sound from within the sound source, and, when the specific sound is detected from within the sound source, and performing acoustic processing on a portion of the sound source that includes at least the specific sound.

Further, the invention according to claim 9 of the present application provides a computer that controls reproduction of a sound source; detects a specific sound from within the sound source; and performing acoustic processing on a portion of the sound source that includes at least the specific sound.

1 is a functional block diagram of a reproduction control device of the present invention; FIG. It is an example of an operation routine of a specific sound detection unit. It is an example of the operation routine of a control part. It is an example of the operation routine of a control part. It is an example of a music list screen display. It is an example of a user interface screen display.

Preferred embodiments of the invention are described below. However, these may be appropriately modified and combined. Also, in the following description and accompanying drawings, substantially the same or equivalent parts are denoted by the same reference numerals.

A reproduction control device 10 according to a first embodiment of the present invention will be described below with reference to the accompanying drawings. The reproduction control device 10 is installed in, for example, an optical disc player such as a CD player, an audio player such as a digital audio player, an information terminal device capable of reproducing sound such as a mobile phone, a tablet, a smart phone, or a car navigation system.

FIG. 1 is a block diagram showing each functional unit of the reproduction control device 10 of the first embodiment. A sound source data reading/playback unit 11 as a sound source reading unit reads sound source data included in content such as music or moving images recorded on a sound source carrying medium such as a CD medium, a DVD medium, a flash memory, a magnetic storage medium, or a carrier wave. to play.

The sound source data reading/reproducing unit 11 as a sound source reading unit may be, for example, a reading device (such as an optical disc drive) for optical discs such as CDs or DVDs, or may be connected to these so as to be able to communicate with them. It may also have an interface with digital media such as, for example, a USB terminal or a wireless communication device such as a Wi-Fi communication device or a Bluetooth (registered trademark) communication device.

The sound source storage unit 13 is, for example, a storage device such as a hard disk, a flash memory, or an SSD, or a part of a storage area inside the device. The sound source storage unit 13 stores sound source data reproduced by the sound source data reproduction unit 11 . It is also possible for the sound source data read/playback unit 11 to transmit the sound source data itself to the sound source storage unit 13 and for the sound source storage unit 13 to store the data.

The specific sound storage unit 15 is, for example, a storage device such as a hard disk, a flash memory, or an SSD, or a part of a storage area inside the device. The specific sound storage unit 15 stores sounds that may confuse the user, sounds that may make the user uncomfortable, or equipment that supports voice recognition input when played back content including sound such as music or video. Specific sound information including a specific sound as a sound (for example, a voice such as a dialogue) that may cause malfunction of the is stored.

Specific sounds include environmental sounds such as ringtones of telephones, sirens of ambulances or police cars, etc., which are heard in daily life, or sounds emitted in emergencies such as warning sounds or SOS sounds in Morse code. may be Sounds that make people feel dangerous, such as sudden braking sounds, impact sounds, explosion sounds, or gunshot sounds, may also be included. It may also include human-generated sounds, such as human shouts or dialogue.

The specific sound storage unit 15 can communicate with an external database DB in which specific sound information is stored. Therefore, the specific sound storage unit 15 can access the external database DB and acquire specific sound information in the external database DB. For example, the specific sound information in the external database DB is constantly updated, and the specific sound storage unit 13 can update its own specific sound information based on the specific sound information in the external database DB.

The specific sound detection unit 17 detects the specific sound stored in the specific sound storage unit 15 from within the sound source data reproduced by the sound source data reading/reproducing unit. This detection may be performed, for example, by detecting whether a sound having the same or similar frequency component as the specific sound is included in the sound source data. In addition, when voice data such as dialogue is included in the sound source data, voice recognition is performed to transcribe it into a character string, and it is detected whether or not there is the same voice as the speech such as the dialogue contained in the specific sound in the character string. You may

When a specific sound is detected in the sound source data, the specific sound detection unit 17 analyzes the reproduction position of the specific sound in the sound source data, and generates specific sound detection information including the specific sound and position information of the specific sound. and save it in the sound source storage unit 13. The position information of the specific sound includes, for example, the name of the sound source data containing the specific sound, the name of the music containing the specific sound (music name), and the start and end times of the reproduction position containing the specific sound within the music. (elapsed time from the start of playback of the music). This specific sound detection information may be stored as a set with the corresponding sound source data (sound source data from which the specific sound is detected in the specific sound detection information).

The control unit 19 as a reproduction control unit or determination unit is a functional unit that reproduces sound source data and displays information about the sound source data. The control unit 19 is communicably connected to the speaker S and the operation display unit D such as a touch panel. The control unit 19 acquires the sound source data from the sound source storage unit 13, reproduces it, and outputs an acoustic signal to the speaker S.

Further, the control unit 19 controls reproduction of sound source data according to an operation input from the operation display unit D, for example. For example, the control unit 19 may control reproduction, pause, or stop of the sound source data, or may adjust the volume of the acoustic signal to be output, according to the operation input from the operation display unit D.

When reproducing sound source data, the control unit 19 acquires specific sound detection information corresponding to the sound source data from the sound source storage unit 13 . The control unit 19 controls reproduction of sound source data based on the acquired specific sound detection information. For example, the control unit 19 does not reproduce music including the specific sound in the sound source data based on the specific sound detection information when reproducing the sound source data.

Further, for example, the control unit 19 may output an acoustic signal after adjusting, for example, muting the sound of the specific sound portion or decreasing the volume thereof when reproducing the sound source data. Further, the sound of the specific sound portion may be processed, such as by adding a sound effect, to be changed to a sound that does not affect the user, and then output. That is, when the specific sound is detected from within the sound source, the control unit 19 performs acoustic processing on the portion including the specific sound, including not reproducing the music containing the specific sound.

Further, the control unit 19 cuts out a part of the sound source data in response to an input from the operation display unit D during reproduction of the sound source data, and sets the sound included in the part as a specific sound to the specific sound storage unit 15. It may be possible to save to Further, it may be possible to receive sound input from a microphone (not shown) connected to the control unit 19 and store the received sound in the specific sound storage unit 15 as a specific sound.

[Specific sound detection routine]
A routine for detecting a specific sound executed by the specific sound detection unit 17 will be described below. FIG. 2 shows a specific sound detection routine R1, which is an example of a routine executed when detecting a specific sound. The specific sound detection routine R1 is started, for example, when power is supplied to the reproduction control device 10 .

When the routine R1 is started, the specific sound detection unit 17 first determines whether sound source data is being reproduced for recording in the sound source storage unit 13 (step S1). This determination may be made by determining whether or not the sound source reproduction data (or signal) has arrived from the sound source data reading/reproducing section 11 .

When the sound source data is being reproduced, the sound source data itself or the sound of the sound source data being reproduced is stored in the sound source storage unit 13 after data processing is performed again. For example, when the sound source data is compressed data, the compressed data may be stored in the sound source storage unit 13 as it is when reproduced by the sound source read/playback unit 11 . Alternatively, the sound source data may be uncompressed and reproduced, and the uncompressed data or compressed data obtained by recompressing the uncompressed data may be stored in the sound source storage unit 13 .

When the sound source data includes one or more songs, a song list listing the songs included in the sound source data may be generated together with the sound source data and stored together with the sound source data.

When the specific sound detection unit 17 determines that the sound source data is not reproduced (step S1: NO), the routine ends. When the specific sound detection unit 17 determines that sound source data is being reproduced, specific sound detection processing is started (step S2).

As described above in the specific sound storage unit 15, this detection process may be performed by detecting whether sound having the same or similar frequency component as the specific sound is included in the sound source data. In addition, when voice data such as dialogue is included in the sound source data, voice recognition is performed to transcribe it into a character string, and it is detected whether or not there is the same voice as the speech such as the dialogue contained in the specific sound in the character string. You may When the specific sound detection process is started, it is determined in step S3 whether or not the specific sound is detected (step S3). This determination may be made by determining whether or not the specific sound is detected in the detection process.

When the specific sound detection unit 17 determines that the specific sound is detected in step S3 (step S3: YES), the position information of the detected specific sound is stored in the sound source storage unit 13 (step S4). As described above, the position information of the specific sound includes, for example, the name of the sound source data containing the specific sound, the name of the music containing the specific sound (music name), and the start and end points of the specific sound within the music. is included.

The specific sound detection unit 17 determines that the specific sound was not detected in step S3 (step S3: NO), or determines whether or not the reproduced sound source data has been reproduced to the end after execution of step S4. (Step S5). That is, it is determined whether or not the specific sound detection processing has been performed up to the end of the reproduced sound source data. This determination is made, for example, by determining whether or not data indicating the end of the sound source data has been received, or whether or not sound source reproduction data (or signals) have still arrived from the sound source data reading/reproducing section 11 . may

If the specific sound detection unit 17 determines in step S5 that the sound source data has not been reproduced to the end (step S5; NO), it continues the specific sound detection process and executes step S3 again.

When the specific sound detection unit 17 determines in step S5 that the sound source data has been reproduced to the end (step S5: YES), the specific sound detection process ends (step S6), and then the routine ends.

[Reproduction control routine 1]
A routine for reproducing the sound source data stored in the sound source storage unit 13, which is executed by the control unit 19, will be described below. FIG. 3 shows a reproduction processing routine R2 as an example of a routine for reproducing sound source data containing one or more pieces of music. The reproduction processing routine R2 is an example of a routine for not reproducing music that includes a specific sound. The regeneration processing routine R2 is started, for example, when power is supplied to the regeneration control device 10 .

When the routine R2 is started, the control unit 19 determines whether or not a reproduction start operation has been received (step S1). This determination may be made, for example, by determining whether or not the operation display unit D has received a reproduction start operation from the user.

When the control unit 19 determines in step S1 that the reproduction start operation has not been received (step S1: NO), the routine ends thereafter. When determining that the reproduction start operation has been received in step S1 (step S1: YES), the control unit 19 starts reproducing the sound source data stored in the sound source storage unit 13 (step S2).

After executing step S2, the control unit 19 determines whether or not the music to be played back includes a specific sound. This determination may be made by referring to the specific sound detection information stored in the sound source storage unit 13 and corresponding to the reproduction data currently being reproduced.

If the control unit 19 determines in step S3 that the music to be reproduced is a music containing a specific sound (step S3: YES), it does not reproduce the music, and the music is the last in the sound source data. (step S4). That is, it is determined whether or not there is a piece of music that has not yet been reproduced in the sound source data. This determination may be made, for example, by referring to a music list created when the sound source data is saved and stored in the sound source storage unit 13 together with the sound source data.

In step S4, when the control unit 19 determines that the music to be reproduced is the last music (step S4: YES), the control unit 19 ends the reproduction process (step S5), and then the routine ends.

In step S4, when the control unit 19 determines that the music to be reproduced is not the last music (step S4: NO), the control unit 19 searches for the music to be reproduced next (step S6), and then , step S3 is executed again for the music to be reproduced next.

In step S3, when the control unit 11 determines that the music to be reproduced does not include the specific sound (step S3: NO), it reproduces the music (step S7).

After executing step S7, the control unit 11 determines whether or not the music being reproduced has ended (step S8). If the controller 11 determines in step S8 that the music being reproduced has not ended (step S8: NO), it continues to reproduce the music, and, for example, executes step S8 again after a certain period of time has elapsed.

When determining in step S8 that the music being reproduced has ended, the control unit 11 executes step S4 to determine whether or not the music being reproduced is the last music in the sound source data.

[Reproduction control routine 2]
A routine for reproducing the sound source data stored in the sound source storage unit 13, which is executed by the control unit 19, will be described below. FIG. 4 shows a reproduction processing routine R3 as an example of a routine for reproducing sound source data containing one or more pieces of music. The reproduction processing routine R3 is an example of a routine for reproducing a portion of a piece of music that includes a specific sound with the sound turned off. The regeneration processing routine R3 is started, for example, when power is supplied to the regeneration control device 10 .

When the routine R3 is started, the control section 19 determines whether or not a reproduction start operation has been received (step S1). This determination may be made, for example, by determining whether or not the operation display unit D has received a reproduction start operation from the user.

When the control unit 19 determines in step S1 that the reproduction start operation has not been received (step S1: NO), the routine ends thereafter. When determining that the reproduction start operation has been received in step S1 (step S1: YES), the control unit 19 starts reproducing the sound source data stored in the sound source storage unit 13 (step S2).

After executing step S2, the control unit 19 determines whether or not to end the reproduction (step S3). This determination may be made, for example, by determining whether or not the operation display unit D has received an operation to end playback (stop playback) from the user. Also, for example, this determination may be made by determining whether or not the reproduced sound source has been completely reproduced.

If the control unit 19 determines to end the reproduction (step S3: YES), then the routine ends. If the control unit 19 determines not to end the reproduction (step S3: NO), it determines whether or not the current reproduction point is the starting point of the specific sound portion, that is, the portion containing the specific sound (step S4). . That is, it is determined whether or not the specific sound portion has started. If the control unit 19 determines that the current playback time point is not the start point of the specific sound portion (step S4), the control unit 19 executes step S3 again to determine whether or not to end the playback.

When the control unit 19 determines that the current playback point is the start point of the specific sound portion (step S4: YES), the control unit 19 stops outputting the acoustic signal of the sound source being played back or mutes the volume of the acoustic signal ( 0) (step S5). That is, the output of the acoustic signal is controlled so that the speaker S does not emit sound.

It should be noted that the audio signal may be output after adjusting the volume such as reducing the volume when reproducing the specific sound portion. Further, the sound of the specific sound portion may be processed, such as by adding a sound effect, to be changed to a sound that does not affect the user, and then output. In other words, when the specific sound is detected from within the sound source, the control unit 19 may apply acoustic processing to the part including the specific sound.

For example, the frequency component may be changed so that the sound of a specific sound portion, such as a siren, does not startle the user or sound offensive to the user.

After executing step S5, the control unit 19 determines whether or not the current playback point is the end point of the specific sound portion (step S6). That is, it is determined whether or not the specific sound portion has ended. If the control unit 19 determines that the current playback time point is not the end point of the specific sound portion (step S6: NO), it repeats step S6 until the end point of the specific sound portion arrives.

If the control unit 19 determines that the current reproduction point is the end point of the specific sound portion (step S6: YES), it cancels the mute (step S7) and executes step S3 again.

According to the playback control device of the present embodiment, the sound source contains sounds that may confuse or annoy the listener, or sounds that may cause malfunction of devices that support voice recognition input. When a specific sound is included, it is possible to prevent the specific sound from being emitted from a speaker or the like.

This can prevent the user listening to the sound source from being confused or uncomfortable. In addition, it is possible to prevent malfunction of a device corresponding to voice recognition input in the vicinity of a speaker that outputs the reproduced sound of the sound source when the sound source is reproduced.

[Other Examples]
- Playback while reading sound source data In the above embodiment, the sound source data is read from the outside, the whole read sound source is temporarily stored in the sound source storage unit 13, and then the stored sound source is played back. A case where an acoustic signal of sound is output to the speaker S has been described as an example. However, there may be a case where sound source data is read from the outside and stored in the read sound source storage unit 13 while the sound source is reproduced and an acoustic signal of the reproduced sound is output to the speaker S.

In this case, the sound source data read from the sound source data read/playback unit 11 is buffered in the sound source storage unit 13 for a predetermined length, and the specific sound detection unit 17 detects the specific sound and outputs the specific sound detection information for the buffered portion. Saving is done. After that, the control unit 19 performs reproduction control such as the above-described reproduction control routine R2 or R3 based on the sound source data in the buffer portion and the specific sound detection information in the buffer portion, and controls the sound source while excluding the specific sound. An acoustic signal of reproduction and reproduction sound may be output.

At this time, when the buffer for the predetermined length and the detection of the specific sound are finished, the buffer for the next predetermined length and the detection of the specific sound are further performed, and this is repeated until the end of the sound source. If it is not necessary to store the read sound source data in the sound source storage unit 13, the buffer portion may be deleted after the buffer portion is reproduced by the control unit 19. FIG. Also, the unit of the buffer portion may be a unit of a predetermined length, or may be a unit of music.
- Music List When reproducing sound source data, the control section 19 may display a music list, which is a list of music included in the sound source data to be reproduced, on the operation display section D. FIG. FIG. 5 shows an example of the music list screen display. As shown in FIG. 5, in the song list, the songs (tracks) can be arranged and displayed from top to bottom in the order in which they are played. In this display, for example, if track 3 contains a specific sound, the user may be notified of this fact via operation display unit D by displaying track 3 in a shaded manner.

As described above, when sound source data is read from the outside and stored in the read sound source storage unit 13, the sound source is reproduced, and an acoustic signal of the reproduced sound is output to the speaker S. In the case of , only a part of the music included in the sound source is known as the presence or absence of the specific sound. In such a case, as soon as it is found that a particular sound is included in a piece of music, the user may be notified that the particular sound is included by displaying the piece of music in a shaded display.
- Addition of specific sound In the above embodiment, the specific sound storage unit 15 can update the specific sound based on the information in the external database DB. It may be possible to add a specific sound.

For example, a user may input a sound through a microphone (not shown) connected to the control unit 11 and store the sound in the specific sound storage unit 15 as a specific sound. For example, the sound that is input in this way may be the ring tone of the user's mobile phone, smart phone, or the like.

In addition, when the user who is listening to the sound source data finds a portion that is confusing or uncomfortable while reproducing the sound source data, the user cuts the portion and reproduces the cut portion as a specific sound. , can be stored in the specific sound storage unit 15 . FIG. 6 shows an example of a user interface screen in such a case.

As shown in FIG. 6, the user interface screen (specific sound registration screen) displayed on the operation display section D includes, for example, a music display section 31 that displays the title of the music and the name of the artist. The user interface screen also includes an operation button display section 33 in which a "playback button", a "pause button" and a "stop button" are displayed. The user interface screen also includes an elapsed time display section 35 that displays the elapsed time from the start of the music, a seek bar 37 that indicates the time of the entire music, and a slider 37A that moves along the seek bar 37 as the playback time elapses. is included. Also included is a clipping button 39 that is used when the user performs a clipping operation for a portion that the user wants to save as a specific sound.

The user may cut out the specific sound by, for example, pressing the cutout button 39 when the sound to be cut out as the specific sound has finished playing during reproduction of the sound source, that is, at the end point of the specific sound. In this case, for example, the sound source is fast-rewound while the cutout button is pressed, and by releasing the cutout button at the start point of the sound that the user wants to cut out as the specific sound, the part can be saved as the specific sound.

Alternatively, the user simply presses the clipping button 39 at the start point of the sound to be saved as the specific sound, and presses the clipping button 39 again at the end point of the sound, thereby saving the sound between the start point and the end point as the specific sound. It may be assumed that

Moreover, the specific sound saved by the user can be uploaded to the external database DB, and the specific sound can be shared by a plurality of users.
-Clouding In the above embodiment, the specific sound storage unit 15 and the specific sound detection unit 17 are included in the playback control device 10, but the specific sound storage unit 15 or the specific sound detection unit 17 It may be provided in an external server or the like.

In this case, the sound source data read and reproduced by the sound source data read/playback unit 11 may be transmitted to the external server, and the specific sound detection unit may detect the specific sound in the external server. Then, the detection result may be transmitted to the reproduction control device 10 and stored in the sound source storage section 13 . That is, one or more of the functional units in the reproduction control device 10 described in the above embodiment may be provided outside the reproduction control device 10, and the above functional units construct the reproduction control system as a whole. You may have

By doing so, the number of processes performed in the regeneration control device 10 is reduced, and it is possible to achieve simplification of the regeneration control device 10, reduction in required specifications, and reduction in power consumption.

Various configurations, routines, and the like in the above-described embodiments are merely examples, and can be appropriately selected or combined according to the application.

10 Playback control device 11 Sound source data read/playback unit 13 Sound source storage unit 15 Specific sound storage unit 17 Specific sound detection unit 19 Control unit D Operation display unit S Speaker

Claims (1)

a playback control unit that controls playback of a sound source;
a specific sound detection unit that detects a specific sound from within the sound source,
The reproduction control device, wherein, when the specific sound is detected from within the sound source, the reproduction control unit performs acoustic processing on at least a portion of the sound source that includes the specific sound.

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