JP2012155822A - Reproducer, reproduction method and computer program - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enhance utility value of repeat reproduction for repeatedly reproducing a repeat section.SOLUTION: A reproducer includes a reproduction processing part for reproducing contents, and a repeat control part for controlling repeat reproduction in the reproduction processing part. The repeat control part changes reproduction speed in the reproduction processing part depending on repeat frequency. The repeat control part is capable of controlling the reproduction speed so as to speed up or slow down according to the repeat frequency. The repeat reproduction may be section repeat for reproducing a predetermined section of contents.

Description

  The present invention relates to a playback apparatus, and more particularly, to a playback apparatus having a repeat playback function of repeatedly playing between a set start point and end point.

  Some reproducing apparatuses that reproduce audio data and moving image data have a repeat reproduction function of repeatedly reproducing two points during reproduction. In repeat playback, a repeat section is determined by receiving settings of a start point and an end point from the user, and the repeat section is repeatedly played back. Repeat playback is particularly effective when listening again and again until important phrases are heard during language learning, when reading aloud repeatedly, or when practicing an instrument according to an accompaniment or example.

JP-A-4-271060

  When using repeat playback for language learning or instrument practice, you may want to change the speed according to your proficiency level. For example, it is possible to slow down until a phrase that is difficult to hear is heard, or to practice at a slow tempo at the beginning and to play faster as you get used to it.

  Conventionally, a playback device that can change the playback speed has been put into practical use. However, in order to change the playback speed according to the level of proficiency, the user must set the playback speed each time. It is not always easy to use for repetitive learning and instrument practice. For this reason, if repeat reproduction according to the proficiency level can be easily performed in language learning or instrument practice, the utility value of repeat reproduction can be further increased.

  Therefore, an object of the present invention is to increase the utility value of repeat reproduction in which repeat sections are repeatedly reproduced.

  In order to solve the above problem, a playback apparatus according to a first aspect of the present invention includes a playback processing unit that plays back content, and a repeat control unit that controls repeat playback in the playback processing unit, and the repeat control unit Is characterized in that the reproduction speed in the reproduction processing unit is changed according to the number of repeats.

  Here, the repeat control unit can control to increase or decrease the reproduction speed according to the number of repeats.

  In addition, the repeat control unit may change the playback speed according to a playback speed change rule, and the playback speed change rule may set a rate of change of the playback speed.

  The repeat control unit may change the playback speed according to a playback speed change rule, and set the playback speed in the first repeat playback in the playback speed change rule.

  In addition, when the reproduction processing unit further includes an overdubbing execution unit for recording the input audio on the audio based on the content to be reproduced, and the overdubbing execution unit executes overdubbing during repeat reproduction. May generate a new file that is the result of repeated recording for each repeat.

  Alternatively, when the playback processing unit further includes an overdubbing execution unit that records the input audio on the audio based on the content to be played back, and the overdubbing execution unit executes overdubbing during repeat playback. May add information related to the playback speed to the file name or metadata of a new file generated by the over-recording.

  Here, the repeat reproduction may be an interval repeat for reproducing a predetermined interval of the content.

  In order to solve the above-described problem, a playback method according to a second aspect of the present invention is a playback method in a playback device having a playback processing unit that plays back content, and includes a repeat control step for controlling repeat playback in the playback processing unit. And, in the repeat control step, the reproduction speed in the reproduction processing unit is changed in accordance with the number of repeats.

  In order to solve the above-described problem, a computer program according to a third aspect of the present invention is a computer that causes an information processing apparatus to function as a reproduction processing unit that reproduces content and a repeat control unit that controls repeat reproduction in the reproduction processing unit. In the program, the repeat control unit changes a playback speed in the playback processing unit in accordance with the number of repeats.

  According to the present invention, it is possible to increase the utility value of repeat playback in which repeat sections are played back repeatedly.

It is a block diagram which shows the function structure of the reproducing | regenerating apparatus which concerns on this embodiment. It is a figure which shows the example of an external appearance of an operation reception part and a display part. It is a flowchart explaining the audio | voice file reproduction | regeneration processing of the reproducing | regenerating apparatus of this embodiment. It is a figure explaining the setting content of the reproduction speed of repeat reproduction | regeneration. It is a flowchart explaining operation | movement of the reproducing | regenerating apparatus in repeat reproduction | regeneration mode. It is a figure which shows the example of the information displayed on a display part during repeat reproduction | regeneration. It is the figure which showed the example of the number of repeats and the change of reproduction speed. It is a flowchart explaining the other example of the audio | voice file reproduction | regeneration processing of the reproducing | regenerating apparatus of this embodiment. It is a figure explaining the case where repeat reproduction is applied to overlap recording.

  Embodiments of the present invention will be described in detail with reference to the drawings. FIG. 1 is a block diagram showing a functional configuration of the playback apparatus according to the present embodiment. The playback device 100 in the present embodiment is a playback device that plays back audio data stored in the sound source unit 200. In addition, the playback apparatus 100 of this embodiment also has a recording function, and can record sound and store sound data in the sound source unit 200. The sound source unit 200 can be a portable recording medium such as an optical disk or a semiconductor memory, or can be a storage device built in the playback apparatus 100. The audio data stored in the sound source unit 200 may be commercial audio data, audio data recorded or downloaded by a user, or the like.

  Note that the content reproduced / recorded by the reproducing apparatus 100 is not limited to audio data, and may be, for example, moving image data. Further, the playback device 100 may be configured as a dedicated device such as an audio device, or may be configured by executing an audio data playback program in a general-purpose information processing device such as a personal computer.

  As shown in the figure, the playback device 100 includes a reading unit 110, a playback control unit 120, an operation receiving unit 130, a display unit 140, a voice output unit 150, a voice input unit 160, and a recording control unit 170.

  The reading unit 110 reads audio data from the sound source unit 200 and outputs the audio data to the reproduction control unit 120. The operation receiving unit 130 receives various operations from the user using operation keys, a touch panel, and the like. The display unit 140 includes a display device such as a liquid crystal display device, and displays menus, reproduction information, and the like.

  The reproduction control unit 120 performs reproduction control of the audio data read by the reading unit 110. The reproduction control unit 120 includes a reproduction processing unit 121 that performs reproduction processing of audio data, and a repeat control unit 122 that performs control of repeat reproduction.

  The reproduction processing unit 121 performs D / A conversion or the like to convert audio data into an analog audio signal. The playback processing unit 121 has a playback speed changing function for changing the playback speed according to the setting. The repeat control unit 122 sets a repeat section based on a user operation received via the operation receiving unit 130, sets a playback speed, and causes the playback processing unit 121 to perform repeat playback. At this time, the playback speed in repeat playback is also set. Note that the reproduction control unit 120 may be realized by hardware or may be realized by software.

  The audio output unit 150 amplifies the analog audio signal converted by the reproduction control unit 120 and outputs it as audio. Audio can be output through a speaker or headphones. The audio input unit 160 inputs an audio signal from an internal microphone or an external microphone.

  The recording control unit 170 performs digital conversion or the like on the analog audio signal input by the audio input unit 160 and records it as audio data in the sound source unit 200. In addition, the recording control unit 170 includes an overlap recording execution unit 171. The overdubbing execution unit 171 performs overdubbing in which the audio data input from the audio input unit 160 is superimposed on the audio data stored in the sound source unit 200, that is, mixed and recorded.

  FIG. 2 is a diagram illustrating an external appearance example of the operation receiving unit 130 and the display unit 140. In this example, the operation reception unit 130 includes a recording key 131 that receives a recording operation, a playback key 132 that receives a playback operation, a stop key 133 that receives a stop operation, a reverse skip key 134 that receives a reverse skip operation, and a forward skip operation. It includes a forward skip key 135 that accepts, a segment repeat key 136 that accepts repeat playback operations, an overlap recording key 137 that accepts overlap recording operations, a menu key 138 that calls a menu, and a cursor key 139 that accepts menu operations.

  When the user wants to perform repeat reproduction, the user can set a repeat section by operating the section repeat key 136. Specifically, when the section repeat key 136 is operated during playback, the playback position at that time is set as the start point. When the section repeat key 136 is operated again, the playback position at that time is set as the end point, and repeat playback is started between the start point and the end point. This state is referred to as a repeat playback mode.

  If the section repeat key 136 is operated again during the repeat playback mode, the repeat playback mode is canceled and normal playback is resumed. Also, the start and end points are cleared. That is, the start point is set by operating the first segment repeat key 136 during normal playback, the end point is set by operating the second segment repeat key 136, the mode is shifted to the repeat playback mode, and the third segment repeat key 136 is operated. The repeat playback mode is canceled and normal playback is resumed.

  As shown in FIG. 2, the display unit 140 is provided with an area for displaying the name of a folder or audio file being played, an area for showing a playback time and a playback position, an area for showing a playback state such as repeat playback, and the like. ing. In the illustrated example, an audio file “Rehearsal 2010101207” of “Folder A” is a reproduction target, and a position of 12 minutes 34 seconds is being reproduced.

  Next, the audio file reproduction process of the reproduction apparatus 100 according to the present embodiment will be described with reference to the flowchart of FIG.

  When receiving a playback instruction from the user (S11), the playback device 100 starts normal playback of the audio file designated as the playback target (S12). Here, the normal reproduction is a process of reproducing from the beginning to the end of the audio file.

  When a start point instruction is received from the user by operating the section repeat key 136 during normal playback (S13: Yes), the repeat control unit 122 sets the playback position at the time of reception as the start point (S14). Next, when an end point instruction is received by the user's operation of the segment repeat key 136 (S15), the repeat control unit 122 sets the playback position at the time of reception as the end point (S16). Then, the process shifts to the repeat reproduction mode (S17).

  When returning from the repeat playback mode or when no start point instruction has been received (S13: No), normal playback (S12) is continued until playback ends (S18). Here, the end of the reproduction is when the operation of the stop key 133 is received from the user, or when the audio file is reproduced to the end.

  Next, the operation of the playback device 100 in the repeat playback mode (S17) will be described. In the present embodiment, the user can call the menu by a predetermined operation of the menu key 138 and the cursor key 139 and set the playback speed of repeat playback prior to execution of repeat playback.

  FIG. 4 is a diagram illustrating the setting of the playback speed for repeat playback. In setting the playback speed for repeat playback, as shown in FIG. 4A, one of “constant speed”, “faster” and “slower” can be selected. Here, “constant speed” is a mode in which the playback speed does not change even during repeat playback during repeat playback, as in conventional repeat playback. “Make it faster” is a mode in which, during repeat playback, the playback speed increases each time repeat is performed. “Delay” is a mode in which the playback speed is slowed down each time repeat playback is performed. Note that the repeat control unit 122 may automatically set one of the modes.

  When “accelerate” or “decrease” is selected, the speed change rate can be set. The rate of change in speed is the rate of speed that changes for each repeat. For example, when “accelerate” is selected, as shown in FIG. 4B, “+ 2%”, “+ 5%”, etc. Can be specified. Here, when “+ 5%” is designated, the reproduction speed is increased by 5% for each repeat. In addition, when “slow down” is selected, a negative value such as “−2%” or “−5%” can be designated. For example, when “−5%” is designated, the reproduction speed decreases by 5% for each repeat.

  In addition, the user can specify a starting speed. The start speed is the playback speed at the first repeat of repeat playback. For example, “90%”, “95%”, “100%”, “105%”, etc. are designated as shown in FIG. can do. Here, when the start speed is set to 90% and the change rate is designated as “+ 10%”, playback is performed at a normal playback speed of 90% in the first repeat, and 90% in the second repeat. Playback is performed at a playback speed that is increased by 10%, and at the third repeat, playback is performed at a playback speed that is further increased by 10%.

  Note that the speed change ratio and the start speed may be fixed values, or other designation methods may be used. It is also possible to specify the number of repeats and the upper and lower limits of the playback speed.

  FIG. 5 is a flowchart for explaining the operation of the playback apparatus 100 in the repeat playback mode (S17). In the repeat playback mode, first, a start speed is set based on designation from the user or the like (S171). Then, the repeat section is reproduced at the set start speed (S172).

  When the playback position reaches the end point (S173: Yes), the next playback speed is set according to the speed change rate (S174), and the process returns to the start point (S175). Then, the repeat section is played back at the newly set playback speed (S172). In addition, when the upper limit value and the lower limit value of the playback speed are determined according to the specifications of the playback apparatus 100 and the user's settings, the playback speed is set with those values as a limit.

  The above processing is repeated until the reproduction is finished (S176: Yes) or until the repeat reproduction mode is canceled (S177: Yes). Here, the end of the reproduction is when the operation of the stop key 133 is received from the user, and the repeat reproduction mode is canceled when the operation of the section repeat key 136 is received, when the designated number of repeats is performed, etc. It is.

  FIG. 6 is a diagram illustrating an example of information displayed on the display unit 140 during repeat reproduction. In the example of this figure, the display of “A → B” indicates that repeat playback is being performed, and the current playback speed and the number of repeats are indicated. Thereby, the user can recognize the state of repeat reproduction in real time.

  FIG. 7 is a diagram showing an example of changes in the number of repeats and the playback speed. FIG. 7A shows that “make faster” is specified, the rate of change is “+ 5%”, and the start speed is This shows a case where “82%” is set. In this case, according to the number of repeats, the playback speed is changed so as to increase gradually, such as “82%”, “86%”, “90%”, “95%”, and “100%”. FIG. 7B shows a case where “slow down” is specified, the change rate is set to “−10%”, and the start speed is set to “100%”. In this case, in accordance with the number of repeats, the reproduction speed is changed so as to become gradually slower, such as “100%”, “90%”, “81%”, “73%”, and “66%”. Note that it is not necessary to change the playback speed every time playback is performed, and the playback speed may be changed after playback is performed a plurality of times.

  Further, the change in the reproduction speed may be relative to the original reproduction speed, not the immediately preceding reproduction speed. In this case, in the example of FIG. 7B, it changes to “100%” “90%” “80%” “70%” “60%”.

  As described above, since the playback device 100 of the present embodiment changes the playback speed for each repeat count, repeat playback according to the proficiency level can be easily performed in language learning or instrument practice. Effective learning and practice effects will be obtained. Thereby, the utility value of repeat reproduction | regeneration can be raised further.

  In the above example, the start point and the end point are set by the user operating the section repeat key 136 twice during reproduction. On the other hand, a repeat time may be set by a menu operation or the like in advance, and repeat playback can be performed only by designating the end point by one operation of the section repeat key 136. FIG. 8 is a flowchart for explaining the operation of the playback apparatus 100 in this case. The same processes as those in FIG. 3 are denoted by the same reference numerals.

  Here, for example, it is assumed that 10 seconds is set as the repeat time. When receiving a playback instruction from the user (S11), the playback device 100 starts normal playback of the audio file designated as the playback target (S12). The user operates the section repeat key 136 once when he / she wants to repeatedly hear the phrase because he / she cannot hear the phrase. This operation means an end point instruction.

  When an instruction for an end point is received from the user by operating the section repeat key 136 during normal playback (S21: Yes), the repeat control unit 122 sets the playback position at the time of reception as the end point, and further repeat time. A playback position retroactive is set as the start point (S22). Then, the process proceeds to the repeat playback mode (S17). The operation in the repeat playback mode (S17) is the same as that described above with reference to FIG. When returning from the repeat playback mode or when an end point instruction has not been received (S21: No), normal playback (S12) is continued until playback ends (S18).

  Further, repeat playback for changing the playback speed can also be applied to over-recording in which the input voice is superimposed on the playback voice. That is, the user can obtain the overlap recording result in which the speed is changed in the same playback section by executing the overlap recording in the repeat section.

  For example, when the overlap recording is applied to repeat playback in which “accelerate” is designated, as shown in FIG. 9, a new file 1 in which a new sound is superimposed on a playback file that is played back at a speed of 1 at the first repeat is shown. Is recorded in the sound source unit 200, and in the second repeat, a new file 2 in which a new sound is superimposed on a playback file that is played back at a speed 2 faster than the speed 1 is recorded in the sound source unit 200. The new file 3 in which the new sound is superimposed on the reproduction file reproduced at the speed 3 faster than the speed 2 is recorded in the sound source unit 200. At this time, it is desirable to add information indicating a reproduction speed such as a speed ratio to the original speed to the file name and metadata of each new file. In this embodiment, the section repeat in which a predetermined section of content is repeatedly played has been described as an example. However, this section may be the entire section of the content. That is, it is applicable not only to section repeat but also to single-tune repeat.

  By verifying each new file recorded by applying overdubbing to repeat playback, the user can know his / her proficiency level and speed suitable for performance, thus further enhancing the utility value of repeat playback be able to.

DESCRIPTION OF SYMBOLS 100 ... Playback apparatus 110 ... Reading part 120 ... Playback control part 121 ... Playback process part 122 ... Repeat control part 130 ... Operation reception part 131 ... Recording key 132 ... Play key 133 ... Stop key 134 ... Reverse skip key 135 ... Forward skip Key 136 ... Repeat section key 137 ... Overlap recording key 138 ... Menu key 139 ... Cursor key 140 ... Display section 150 ... Audio output section 160 ... Audio input section 170 ... Recording control section 171 ... Overlap recording execution section 200 ... Sound source section

Claims (9)

A playback processing unit for playing back content;
A repeat control unit for controlling repeat reproduction in the reproduction processing unit,
The reproduction apparatus, wherein the repeat control unit changes a reproduction speed in the reproduction processing unit in accordance with the number of repeats.   The playback apparatus according to claim 1, wherein the repeat control unit controls the playback speed to be increased or decreased according to the number of repeats. The repeat control unit changes the playback speed according to a playback speed change rule,
The playback device according to claim 1, wherein a rate of change in playback speed can be set in the playback speed change rule. The repeat control unit changes the playback speed according to a playback speed change rule,
The playback apparatus according to claim 1, wherein a playback speed in the first repeat playback can be set in the playback speed change rule. An audio recording based on the content to be reproduced by the reproduction processing unit;
The overlap recording execution unit generates a new file that is the overlap recording result for each repeat when performing the overlap recording during repeat playback. The reproducing apparatus as described. An audio recording based on the content to be reproduced by the reproduction processing unit;
The over-recording execution unit adds information on the playback speed to a file name or metadata of a new file generated by the over-recording when executing over-recording during repeat playback. Item 5. The playback device according to any one of Items 1 to 4.   The playback apparatus according to claim 1, wherein the repeat playback is a section repeat for playing back a predetermined section of the content. In a playback method in a playback device having a playback processing unit for playing back content,
A repeat control step for controlling repeat playback in the playback processing unit;
In the repeat control step, the playback speed in the playback processing unit is changed in accordance with the number of repeats. A playback processing unit for playing back content,
A repeat control unit for controlling repeat reproduction in the reproduction processing unit;
A computer program for causing an information processing apparatus to function as
The computer program characterized in that the repeat control unit changes the reproduction speed in the reproduction processing unit in accordance with the number of repeats.