JP3625044B2 - Audio data editing apparatus and audio data editing method - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an audio data editing apparatus and audio data editing method for setting a reference position on a reproduction time axis of audio data and editing audio data using the reference position as a reference.
[0002]
[Prior art]
In hotels, restaurants, supermarkets, and the like, playback devices that play back audio data in order to play broadcast guidance and messages for guiding visitors, BGM, and the like are used.
Audio data used in such a playback apparatus is recorded as a digital signal on a storage medium such as a CD, MD, memory card, or IC card. Therefore, even if it is reproduced repeatedly, there is no deterioration in sound quality, and data editing is easy.
[0003]
By the way, as shown in FIG. 7, the audio data 10 often includes a silent portion 12 before and after the actual audio portion 11 on the time axis. This is unavoidable when recording audio data.
In the case of reproducing the audio data 10 in which such a silent portion 12 precedes the actual audio portion 11, even if the reproduction switch is pressed or a reproduction signal is output by a timer, the actual sound is reproduced. There is a gap, and it is difficult to perform quick reproduction.
Also, if there is a silent part after the actual voice part, the sound output is completely turned off after the silence of the actual voice part 11 of the voice data is finished, and then the voice output is completely turned off. Sometimes it is.
Therefore, it is a common practice to delete the silent portion 12 in the audio data 10.
[0004]
[Problems to be solved by the invention]
When the silent portion 12 in the audio data 10 is accurately deleted, it is very important to accurately set a predetermined reference position y that starts or ends the deletion.
Conventionally, when such a reference position y is set, the audio data 10 is actually reproduced, the audio level is confirmed while listening to the audio, and based on the elapsed time from the beginning of the audio data 10. It was.
However, in such a method, when setting the reference position, operations such as data reproduction, fast forward, and rewind must be repeated many times, which is difficult. Moreover, even if such a great effort is required, it is difficult to set as intended by the operator, and there is a problem that the setting of the reference position is inaccurate.
[0005]
On the other hand, if accuracy is desired by setting the position to be deleted, the reference position may be set while monitoring the output waveform of the audio data.
However, in such a method, there is a problem that a monitor screen or the like is required and the apparatus becomes large.
[0006]
Therefore, the present invention has been made to solve the above-described problems, and the object of the present invention is to easily set a reference position as a reference when deleting audio data without requiring a large-scale device. An object of the present invention is to provide an audio data editing apparatus and an audio data editing method.
[0007]
[Means for Solving the Problems]
That is, the present according to the speech data editing apparatus according to the invention, to set the deletion start or deletion end to become a predetermined reference position on the reproduction time axis of the audio data, the audio data, the reference position from the playback time axis Is an audio data editing device that deletes before or after , temporary setting means for setting a temporary reference position on the reproduction time axis of the audio data, and an operator on the reproduction time axis from the temporary reference position if it is selected to remove the previous automatically play a predetermined number of times repeatedly audio data from the temporary reference position set until after a predetermined time has elapsed from the provisional reference position by the provisional setting unit, the operator automatic if it is selected to remove after on the reproduction time axis than the temporary reference position, the audio data from the predetermined time before the temporary reference position set by the temporary setting means to the provisional reference position by And automatic reproduction means for reproducing a predetermined number of iterations, after repeated regeneration by the automatic reproduction means, characterized in that the operator includes a determining unit capable of determining a reference position on the provisional reference position.
By adopting this configuration, the content of the reproduction data at this position can be repeatedly heard in advance with the position temporarily set by the temporary setting means as the temporary reference position, so the quality of the temporary reference position can be easily determined. The reference position can be accurately determined with a simple operation.
[0008]
Further, storage means for storing position data at positions divided on a reproduction time axis of the audio data from the beginning of the audio data for each set time interval of a plurality of long and short stages, and selection for selecting the predetermined position data at the arbitrary stage And the position selected by the selection means as the temporary reference position, from the temporary reference position set by the temporary reference position set by the voice data from a predetermined time before the temporary reference position to the temporary reference position or the temporary setting position Automatic reproduction means for automatically reproducing a predetermined number of times after a predetermined time has elapsed, and determination means for allowing an operator to determine a reference position as the temporary reference position after repeated reproduction by the automatic reproduction means. If it is provided, the temporary reference position can be set based on the set time interval that is gradually shorter, so that the reference position can be finally determined more accurately.
Further, by providing the display means for displaying the position data of the set reference position, the labor for setting the reference position can be further saved.
[0009]
According to the audio data editing method according to the present invention, to set the deletion start or deletion end to become a predetermined reference position on the reproduction time axis of the voice data, audio data, prior to the playback time axis from the reference position Alternatively, the audio data editing method for deleting the latter , wherein the reference position is temporarily set, and if the operator selects to delete the part before the temporary reference position on the playback time axis, the temporary setting is performed. The audio data from the temporary reference position set by the means to the audio data from the temporary reference position until a predetermined time elapses is automatically reproduced a predetermined number of times, and the operator deletes the portion after the temporary reference position on the reproduction time axis. If you choose to automatically play a predetermined number of times repeatedly audio data from a predetermined time before from the provisional reference position set to the temporary reference position by the temporary setting means, after repeated reproduction of the audio data, Serial and determining the reference position to the temporary reference position.
According to this method, the quality of the temporary reference position can be easily determined, and the final reference position can be easily determined.
Further, when setting the temporary reference position, a predetermined position at an arbitrary stage is selected from the positions divided on the reproduction time axis of the audio data from the beginning of the audio data for each of a plurality of long and short set time intervals. Set to a reference position, and automatically reproduce audio data from a predetermined time before the temporary reference position to the temporary reference position or audio data from the temporary reference position to a time after the predetermined time from the temporary reference position, After repeated reproduction by the automatic reproduction means, the operator determines a reference position as the temporary reference position, selects a set time interval shorter than the selected set time interval among the set time intervals, and sets the temporary reference position. By setting and automatically shortening the set time interval to narrow down the temporary reference position to the optimum position, the reference position can be set more accurately.
[0010]
DETAILED DESCRIPTION OF THE INVENTION
DESCRIPTION OF EXEMPLARY EMBODIMENTS Hereinafter, preferred embodiments of the invention will be described in detail with reference to the accompanying drawings. FIG. 1 shows a concept of audio data editing, and FIGS. 2 and 3 are explanatory diagrams of an editing method for editing audio data.
First, an outline of audio data editing will be described with reference to FIG.
As described in the prior art, when the silent part 12 included in the voice data 10 is deleted, it is important to accurately measure the boundary between the silent part 12 and the actual voice part 11 (FIG. 7). ).
In the present invention, a temporary reference position x, which is a temporary reference position, is first set between the silent part 12 and the actual audio part 11 before the reference position is set and determined. When deleting before the axis or after the playback time axis, the audio data on the side opposite to the side to be deleted around the temporary reference position x is automatically repeated a plurality of times for a predetermined time (here, 3 seconds). By reproducing, it is possible to check in advance how the audio data will be before it is actually deleted, and to easily determine the reference position.
[0011]
That is, in FIG. 1A, when a predetermined position on the reproduction time axis t of the audio data 10 is set as the temporary reference position x, and the time before the temporary reference position x is deleted, the temporary reference position The audio data after 3 seconds from the temporary reference position is automatically and repeatedly reproduced a plurality of times.
Further, in FIG. 1B, when the predetermined position on the reproduction time axis t of the audio data 10 is set as the temporary reference position x and the time later than the temporary reference position x is deleted, the temporary reference position The audio data from 3 seconds before to the temporary reference position is automatically and repeatedly reproduced a plurality of times.
[0012]
Further, in the editing method of the present invention, as shown in FIGS. 2 and 3, when setting the temporary reference position x to a predetermined position, the audio data is predetermined from the beginning on the reproduction time axis so as to be a setting reference. Divide every set time interval of the unit, set the temporary reference position based on the divided position, and gradually narrow down the set time interval to narrow down the temporary reference position to determine a more accurate reference position It is also a thing.
Hereinafter, this editing method will be described with reference to FIGS.
[0013]
That is, the audio data to be edited is divided into predetermined unit time intervals based on the entire data length (FIG. 3). However, it does not mean that the data is actually divided, it just looks as if it is divided in appearance. In other words, the position data when divided at predetermined intervals such as hours, minutes, seconds, and frames on the playback time axis is stored in advance in the storage means, which will be described later. The reference position is set.
First, the data length of the entire audio data is measured, and based on this data length, whether the reference position is initially set at a set interval in hours (a) or whether the reference position is set at a set interval in minutes ( b) It is determined whether the reference position is set at the set interval in seconds (c).
[0014]
Specifically, as shown in the broken line portion of FIG. 2, when the measured data length is 1 hour or more, 1 hour is selected as the first set time interval, and the data length is from 1 minute to 60 minutes. If it is between, 1 minute is selected as the first set time interval, and if the data length is between 1 second and 1 minute, 1 second is selected as the first set time interval. This is automatically selected by a voice data editing apparatus for editing voice data.
[0015]
Hereinafter, from the description on the drawings, the expression “separate data” is used, but as described above, the data is not actually partitioned, and the audio data is added to the position data stored in advance in the storage means. The provisional reference position is set by applying.
For example, as shown in FIG. 2A, when the entire data length is 1 hour or more, the audio data is first divided in units of time ((a) of FIG. 3).
When a predetermined position among the positions divided in units of time is selected as the temporary reference position x, the audio data as shown in FIG. 1 is repeatedly reproduced at the selected temporary reference position.
The data editing operator who hears repeated reproduction determines whether or not this position can be determined as the reference position. If it is determined that a different position should be set, another position among the positions divided in time units is selected as the temporary reference position x. The temporary reference position can be selected any number of times, and reproduction is performed each time. If the temporary reference position x is acceptable as a result of repeated playback, this position is determined as the reference position.
[0016]
When the reference position in time unit is determined, the audio data is divided in minutes with the reference position determined in time unit as the center ((b) of FIG. 3). Then, by selecting the temporary reference position x at a predetermined position divided in units of minutes, the audio data as shown in FIG. 1 is repeatedly reproduced at the selected position.
The data editing operator who hears repeated playback determines whether or not this temporary reference position can be determined as the reference position. If it is determined that a different position should be set, another position among the positions divided in minutes is selected as the temporary reference position x. If this position is acceptable, this position is determined as the reference position.
[0017]
When the reference position in minutes is determined, the audio data is divided in seconds with the reference position determined in minutes as the center ((c) in FIG. 3). Then, by selecting the reference position as a predetermined position divided in seconds, the audio data as shown in FIG. 1 is repeatedly reproduced at the selected position.
The data editing operator who hears repeated playback determines whether or not this temporary reference position can be determined as the reference position. If it is determined that a different position should be set, another position among the positions divided in seconds is selected as the temporary reference position x. If this position is acceptable, this position is determined as the reference position.
[0018]
Finally, the audio data is divided at set time intervals up to the frame unit. A frame is a unit for encoding or decoding audio data at a time. Here, 1/20 second (0.05 second) is one frame.
That is, when the reference position in units of seconds is determined, the audio data is divided in units of frames centering on the reference position determined in units of seconds ((d) in FIG. 3). Then, by selecting a predetermined position divided in frame units as a temporary reference position, the audio data as shown in FIG. 1 is repeatedly reproduced at the selected position.
The operator who has heard this repeated reproduction finally determines whether or not this temporary reference position can be used as a reference position. The position is selected as the temporary reference position x, and if it is good, this position is determined as the reference position.
The setting of the reference position ends when it is finally performed in units of frames.
In this way, since the setting of the reference position is narrowed down to the frame unit, the reference position can be accurately determined.
[0019]
As described above, the audio data editing apparatus automatically performs the narrowing down by dividing the division at every set time interval when setting the temporary reference position into short time.
Further, the division of the set time intervals in a plurality of stages is always performed up to the frame unit.
[0020]
Next, the audio data editing apparatus of the present invention will be described with reference to FIGS. FIG. 4 is a block diagram showing a schematic configuration of the editing apparatus, and FIG. 5 shows an example of an operation panel handled by an operator.
Note that the audio data editing device 30 described here is not a device having only an editing function, but is generally provided with a reproduction function for reproducing data in a storage medium, a recording function for writing data in the storage medium, and the like. This is a device provided with a sound editing function in a simple sound reproducing device.
[0021]
Reference numeral 32 denotes a storage medium in which audio data to be edited is stored. As the storage medium 32, a CD, a memory card, an IC card, or the like is used.
The input means 34 includes a dial 24, a determination switch 22 and a cancel switch 26 as shown in FIG.
Such input means 34 can instruct the control means to be described later to perform work related to data editing such as selection of audio data to be edited, selection of a reference position, determination thereof, and cancellation thereof.
[0022]
The reading means 36 is a component that reads audio data from the storage medium 32. If the storage medium 32 is a CD, an optical pickup, and if the storage medium 32 is a memory card, IC card, or the like, an input interface circuit is the reading means. It corresponds to 36.
If the display means 38 uses a 7-segment display means as shown in FIG. The display unit 38 displays the currently set reference position.
[0023]
The audio data read by the reading unit 36 is temporarily stored in the storage unit 40 composed of a semiconductor memory or the like.
A selection instruction signal or the like for selecting a temporary reference position input from the input unit 34 is input to the control unit 42. The control means 42 is composed of a temporary setting means, an automatic reproduction means, a selection means, a determination means and the like as defined in the claims, and is also composed of a microcomputer. Note that the selection means and the determination means are a combination of the input means 34 and the control means 42.
[0024]
Based on the instruction from the input means 34, the control means 42 sends the audio data in the storage means 40 via the automatic reproduction means from the speaker 48 via the reproduction means 46 for a predetermined time from the set temporary reference position. Output repeatedly. The automatic reproduction means includes a reproduction means 46, a storage means 40 in which audio data is stored, a control means 42 for controlling these, and the like.
When the operator depresses the decision switch 22 and decides the temporary reference position as the reference position, the control means 42 delimits the voice data by further shortening the set time interval from the head of the voice data in the storage means 40. The voice data is automatically reproduced at the temporary reference position set by the operator.
When the reference position is finally narrowed down in units of frames, the audio data for which the reference position has been determined is deleted from the determined reference position before or after the reproduction time axis.
The deleted audio data is recorded in the storage medium 32 via the writing means 50.
[0025]
Next, FIG. 6 shows a flowchart for explaining the voice data editing method of the present invention. Based on this flowchart, the voice data editing method using the voice data editing apparatus will be described in more detail.
First, in step S102, when there are a plurality of audio data, audio data to be edited is selected from those audio data.
Subsequently, in S104 and S106, the data length of the selected audio data is measured, and a set time interval corresponding to the data length that delimits the audio data used for selecting the reference position is selected.
[0026]
Next, in S108, it is selected whether to delete the previous part on the reproduction time axis or the subsequent part from the reference position that can be set on the audio data.
If the part before the reference position is deleted, the process proceeds to S110. If the part after the reference position is deleted, the process proceeds to S111.
[0027]
The case where it transfers to S110 is demonstrated.
In S110, in the audio data divided by the unit time selected in S106, it is selected where the temporary reference position is set in the unit time.
In S112, the audio data from the temporary reference position set in S110 is reproduced for 3 seconds. This 3 second reproduction is repeated three times in succession.
[0028]
The operation of S110 and S112 will be specifically described.
First, in S110, any one of “0H” to “2H” shown in FIG. 3 is displayed on the display means 38 of FIG. This display can be displayed by selecting any of “0H” to “2H” by turning the dial 24.
Then, if the dial 24 is turned to display, for example, “1H”, the data for 3 seconds from the beginning of the audio data after 2 hours to 2 hours and 3 seconds from the beginning of the voice data will be 3 Repetitive playback is performed (P in FIG. 3A).
[0029]
In S114, as a result of listening to the reproduction data as to whether or not the temporary reference position set in S110 is acceptable, the operator determines whether to use this temporary reference position as the reference position.
That is, if the audio part 11 is cut off at the temporary reference position x set in S110 or the silent part 12 remains, it is necessary to set the temporary reference position x again.
If it is determined that the position set in S110 is acceptable, the operator depresses the determination switch 22 to determine the reference position, and the process proceeds to S116.
If it is temporarily set at a different position again, the process returns to S110 and the dial 24 is turned again to listen to the voice data. Thus, S110 to S114 can be repeated many times within the same set time interval until an accurate reference position is determined.
[0030]
In S116, it is detected whether or not the setting of the reference position has been completed up to the frame unit. If the setting has been completed up to the frame unit, the process proceeds to S120, and if not completed, the process proceeds to S118 and the next set time is reached. The interval is set.
Specifically, for example, after determining the reference position by pressing the determination switch 22 at “2H” in FIG. 2, the provisional reference position is set in units of minutes, so the process returns to S110 and the audio data The setting is made in units of minutes around the first two hours.
[0031]
A case where the process returns to S110 for setting the minute unit will be described.
In S110 and S112, the number displayed on the display means 20 is centered on the reference position determined at the previous set time interval (here, it is assumed that the position is set to 2 hours from the beginning of the audio data). The position of 2 hours from the beginning of the data is displayed as “00”, and 2 hours and 1 minute after the beginning is displayed as “01”.
[0032]
Then, if the dial 24 is turned to display, for example, “59”, the data for 3 seconds after the lapse of 1 hour and 59 minutes from the beginning of the audio data is reproduced three times at the time when this display is made (see FIG. 3 (b) Q).
In S114, the operator determines whether or not the temporary reference position set in S110 is acceptable as a result of hearing the reproduction data.
Hereinafter, the setting of the reference position in seconds and the setting of the reference position in frames are omitted.
[0033]
Then, if the setting of the reference position is completed up to the frame unit, the process proceeds to S120, where the actually determined position is set as the reference position, and the audio data before the reference position is deleted.
Then, the audio data deleted from the reference position is written to the storage medium in S122, and the series of audio data editing work is completed.
[0034]
Note that even if it is selected to delete the audio data after the reference position in S108 and the process proceeds to S111, the process is basically the same as the case where the process proceeds to S110 and the data before the reference position is deleted. The reference position setting operation is the same.
The only difference is that, in S113, the playback from the reference position selected for playback of the audio data is repeated three times from the reference position to the reference position three times.
[0035]
The operation in S115 for determining whether or not the temporary reference position selected in S111 is acceptable is the same as that in S114. Then, through S117 and S119, the reference position is determined with a gradually shorter set time interval, and finally the time interval in units of frames is determined.
When the reference position is determined to the frame unit, the audio data after the reference position is deleted in S130.
The deleted audio data is written to the storage medium in S122.
[0036]
When the cancel switch 26 shown in FIG. 5 is pressed, the set time interval before the currently set time interval is restored, the reference position is determined again at the previous time interval, and another position is set again. It is also possible to make a decision (through a process such as an arrow in FIG. 2).
[0037]
Further, if the 7-segment display means is used as the display means 20 for displaying the unit time and the like, it is preferable because the voice data can be edited with a simple configuration, but the display unit is limited to the 7-segment display means. There is no.
[0038]
Further, when the reference position is set with the dial 24, the audio data to be reproduced is from 3 seconds before and 3 seconds after the temporary reference position in S114 and S115, respectively. However, this playback time may be adjustable. In this way, the playback time can be shortened for the operator, and voice data can be edited more quickly.
[0039]
Furthermore, although it has been described that the above-described audio data editing apparatus and audio data editing method are used for deleting a silent portion on audio data, the editing apparatus and editing method of the present invention are limited to this. is not.
[0040]
While the present invention has been described in detail with reference to a preferred embodiment, the present invention is not limited to this embodiment, and it goes without saying that many modifications can be made without departing from the spirit of the invention. .
[0041]
【The invention's effect】
According to the audio data editing apparatus of the present invention, the temporary setting means for setting the temporary reference position on the reproduction time axis of the audio data, and the case of deleting the part before the temporary reference position on the reproduction time axis When the audio data from the temporary reference position to the time after the predetermined time elapses is automatically reproduced repeatedly a predetermined number of times, and the portion on the reproduction time axis is deleted from the temporary reference position, Automatic reproduction means that automatically reproduces audio data from a predetermined time before to a temporary reference position a predetermined number of times, and determination means that allows an operator to determine the reference position as the temporary reference position after repeated reproduction by the automatic reproduction means Since the audio data on the side opposite to the side to be deleted is automatically and repeatedly played back multiple times around the temporary reference position, it will be confirmed in advance how the audio data will be before it is actually deleted To do It can be. Therefore, the quality of the temporary reference position can be easily determined, and the reference position can be accurately determined with a simple operation.
[Brief description of the drawings]
FIG. 1 is an explanatory diagram for explaining the concept of editing audio data.
FIG. 2 is an explanatory diagram for explaining an audio data editing method according to the present invention.
FIG. 3 is an explanatory diagram for explaining setting at the temporary reference position for each set time interval in the setting of the temporary reference position shown in FIG. 2;
FIG. 4 is a block diagram showing a configuration of an audio data editing apparatus according to the present invention.
FIG. 5 is an explanatory diagram for explaining an operation panel;
FIG. 6 is a flowchart showing an embodiment of an audio data editing method.
FIG. 7 is an explanatory diagram showing a waveform of audio data.
[Explanation of symbols]
20 Display means 22 Decision switch 24 Dial 26 Cancel switch 30 Audio data editing device 32 Storage medium 34 Input means 36 Reading means 38 Display means 40 Storage means 42 Control means 46 Playback means 48 Speaker 50 Writing means

Claims (5)

Setting a predetermined reference position as a deletion start or deletion end on the reproduction time axis of the audio data, the audio data, an audio data editing apparatus to remove the before or after on the reproduction time axis from the reference position ,
Temporary setting means for setting a temporary reference position on the reproduction time axis of the audio data;
If the operator selects to delete the part before the temporary reference position on the reproduction time axis, the temporary reference position set by the temporary setting means from the temporary reference position until a predetermined time has elapsed. If the audio data is automatically and repeatedly reproduced a predetermined number of times, and the operator selects to delete the part on the reproduction time axis from the temporary reference position, the temporary reference position set by the temporary setting means Automatic reproduction means for automatically reproducing a predetermined number of times audio data from a predetermined time before to a temporary reference position;
An audio data editing apparatus comprising: a determination unit that allows an operator to determine a reference position as the temporary reference position after repeated reproduction by the automatic reproduction unit. Storage means for storing position data of positions divided on the reproduction time axis of the audio data for each set time interval of a plurality of long and short stages from the beginning of the audio data;
Selecting means for selecting predetermined position data at any stage;
The position selected by the selection means is set as the temporary reference position, the audio data from a predetermined time before the temporary reference position to the temporary reference position, or the temporary reference position set by the temporary setting means for a predetermined time from the temporary reference position. Automatic reproduction means for automatically reproducing the audio data up to a predetermined number of times until after elapse,
2. The audio data editing apparatus according to claim 1, further comprising a determination unit that allows an operator to determine a reference position as the temporary reference position after repeated reproduction by the automatic reproduction unit. 3. The audio data editing apparatus according to claim 1, further comprising display means for displaying position data of the temporarily set temporary reference position. Setting a predetermined reference position as a deletion start or deletion end on the reproduction time axis of the audio data, the audio data, an audio data editing method for deleting the previous or post on a reproduction time axis from the reference position ,
Temporarily set the reference position,
If the operator selects to delete the part before the temporary reference position on the reproduction time axis, the sound from the temporary reference position set by the temporary setting means to the time after the predetermined time has elapsed from the temporary reference position. When the data is automatically reproduced repeatedly a predetermined number of times and the operator selects to delete the part on the reproduction time axis from the temporary reference position, the data is predetermined from the temporary reference position set by the temporary setting means. The audio data from the time before to the temporary reference position is automatically played repeatedly a predetermined number of times,
An audio data editing method, wherein after the audio data is repeatedly reproduced, a reference position is determined as the temporary reference position. When setting the temporary reference position, a predetermined position at an arbitrary stage is selected from among the positions divided on the reproduction time axis of the audio data for each set time interval of a plurality of long and short stages from the beginning of the audio data. Set to
Audio data from a predetermined time before the temporary reference position to the temporary reference position or audio data from the temporary reference position to the time after the predetermined time has been automatically reproduced repeatedly a predetermined number of times,
After repeated reproduction by the automatic reproduction means, the operator determines a reference position as the temporary reference position,
Selecting the set time interval shorter than the selected set time interval among the set time intervals, and setting the temporary reference position,
5. The audio data editing method according to claim 4, wherein the setting is performed by gradually shortening the set time interval and narrowing down the temporary reference position to the optimum position.

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