JP2001282271A - Device and method for editing sound data - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a sound data editing device which can easily set a reference position for the deletion of sound data without requiring a large-scale device. SOLUTION: The sound data editing device 30 which sets the reference position on the reproduction time base (t) of the sound data 10 and edits the sound data 10 according to the reference position is equipped with a temporary setting means which sets a temporary reference position (x) on the reproduction time base (t) of the sound data 10, an automatic reproducing means which automatically reproduces the sound data from a specific time before the temporary reference position (x) set by the temporary setting means to the temporary reference position (x) set by the temporary setting means and/or sound data from the temporary reference position (x) to a specific time after the temporary reference position (x) as many times as specified, and a determining means which allows an operator to determine the temporary reference position (x) as a reference position after the repetitive reproduction by the automatic reproducing means.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an audio data editing apparatus and an audio data editing method for setting a reference position on a reproduction time axis of audio data and editing the audio data based on the reference position.

[0002]

2. Description of the Related Art In hotels, restaurants, supermarkets, and the like, a reproducing apparatus that reproduces audio data to broadcast a broadcast guide or a message for guiding a guest, or to play BGM or the like is used. The audio data used in such a playback device is recorded as a digital signal on a storage medium such as a CD, MD, memory card, or IC card. Therefore, the sound quality is not degraded even if it is reproduced repeatedly and many times, and the data can be easily edited.

[0003] 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 inevitable when recording audio data. In the case of reproducing the audio data 10 in which the silence portion 12 is located before the actual audio portion 11, even if the reproduction switch is pressed or a reproduction signal is output by a timer, the reproduction of the actual sound is not completed. There is an interval, and it is difficult to perform quick reproduction. Also, if there is a silence portion after the actual audio portion, the sound output is completely turned off after the silence state continues for a while after the reproduction of the actual audio portion 11 of the audio data, which is annoying. There are things. Therefore, it is common practice to delete the silent part 12 in the audio data 10.

[0004]

When the silent portion 12 in the audio data 10 is to be accurately deleted, it is very important to accurately set a predetermined reference position y at which the deletion is started or ended. Become. Conventionally, when the reference position y is set, the sound data 10 is actually reproduced, the sound level is checked while listening to the sound, and the time is set based on the elapsed time from the beginning of the sound data 10. Was. However, in such a method, when setting the reference position, operations such as data reproduction, fast-forward, and rewind must be repeatedly performed many times, and the work is difficult. Moreover, even if such a great deal of work is required, it is difficult to set as desired by the operator, and there is a problem that the setting of the reference position lacks accuracy.

On the other hand, if accuracy is to be ensured 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 device becomes large-scale.

Accordingly, the present invention has been made to solve the above-mentioned problem, and an 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. It is an object of the present invention to provide an audio data editing apparatus and an audio data editing method that can perform the above-described operations.

[0007]

That is, according to the audio data editing apparatus of the present invention, a reference position is set on the reproduction time axis of the audio data, and the audio data is edited based on the reference position. In the editing device, a provisional setting means for setting a provisional reference position on the reproduction time axis of the audio data; Automatic reproduction means for automatically and repeatedly reproducing audio data and / or audio data from a temporary reference position set by the temporary setting means to a time after a lapse of a predetermined time from the temporary reference position; and After the repetitive reproduction, a determination means capable of determining a reference position at the temporary reference position by an operator is provided. By adopting this configuration, it is possible to repeatedly hear the contents of the reproduction data at this position in advance using the position provisionally set by the provisional setting means as the provisional reference position, so that the quality of the provisional reference position can be easily determined. The reference position can be accurately determined by a simple operation.

[0008] Further, a storage means for storing position data of a position on the reproduction time axis of the audio data which is divided from the beginning of the audio data at a plurality of set time intervals of a long and short step, and stores the predetermined position data at the arbitrary step. Selecting means for selecting, and using the position selected by the selecting means as the temporary reference position, audio data from a predetermined time before the temporary reference position to the temporary reference position and / or a temporary reference position set by the temporary setting means. Automatic reproduction means for automatically and repeatedly reproducing audio data a predetermined number of times from the temporary reference position until a predetermined time has elapsed, and an operator can determine a reference position at the temporary reference position after repeated reproduction by the automatic reproduction means With the provision of a simple determination means, the provisional reference position can be set based on the set time interval gradually shorter, so that the reference It can be determined. Further, by providing the display means for displaying the position data of the set reference position, the trouble of setting the reference position can be further reduced.

According to the audio data editing method of the present invention, in the audio data editing method of setting a reference position on the reproduction time axis of the audio data and editing the audio data based on the reference position, The voice data from the provisional reference position and a predetermined time before the provisionally set reference position to the provisional reference position and / or the sound data from the provisional reference position and after a predetermined time from the provisional reference position are automatically repeated a predetermined number of times. After reproducing the audio data and repeatedly reproducing the audio data, a reference position is determined as 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. Also,
When the temporary reference position is set, a predetermined position at an arbitrary stage among the positions obtained by dividing the reproduction time axis of the audio data from the beginning of the audio data at every set time interval of a plurality of long and short steps is set to the temporary reference position. And automatically reproduces audio data from the temporary reference position a predetermined time before to the temporary reference position and / or audio data from the temporary reference position after the predetermined time from the temporary reference position a predetermined number of times, After repeated playback by the automatic playback 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 the temporary reference position to the optimum position, the reference position can be set more accurately.

[0010]

Preferred embodiments of the present invention will be described below in detail with reference to the accompanying drawings. FIG. 1 shows the concept of audio data editing, and FIGS. 2 and 3 are explanatory diagrams of an editing method for editing audio data. First, the outline of audio data editing will be described with reference to FIG. As described in the related art, when the silent part 12 included in the audio data 10 is deleted, it is important to accurately measure the boundary between the silent part 12 and the actual audio 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 portion 12 and the actual audio portion 11 before the reference position is set. When deleting the data before the axis or after the reproduction time axis, the audio data on the side opposite to the side to be deleted around the temporary reference position x is
By automatically and repeatedly playing back a plurality of times for a predetermined time (here, 3 seconds), it is possible to confirm in advance what the audio data will be before actually deleting it, and easily determine the reference position. .

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,
This indicates that the audio data three seconds after the provisional reference position from the provisional reference position is automatically and repeatedly reproduced a plurality of times. Also, in FIG. 1B, 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 after the temporary reference position x is deleted, the temporary reference position This indicates that the audio data from three seconds before to the temporary reference position is automatically and repeatedly reproduced a plurality of times.

Further, in the editing method of the present invention, as shown in FIGS. 2 and 3, when the temporary reference position x is set at a predetermined position, the audio data on the reproduction time axis is used as a reference for setting. The temporary reference position is set based on the position divided by the set time interval of the predetermined unit from the top, and the set time interval is gradually shortened to narrow down the temporary reference position more finely, so that the more accurate reference position It is also the one that decides. Hereinafter, this editing method will be described with reference to FIGS.

That is, the entire audio data to be edited is divided at predetermined unit time intervals based on the entire data length (FIG. 3). However, the data is not actually separated, but only appears to be separated at the time of work. In other words, the time,
Position data in the case where the data is divided at predetermined intervals, such as minutes, seconds, and frames, is stored in advance in a storage unit described later, and a temporary reference position is set based on the position data. First, the data length of the entire audio data is measured, and based on this data length, whether the reference position is first set at a set interval in time units (a) or whether the reference position is set at a set interval in minutes ( b) It is determined whether the reference position is to be set at a set interval in units of seconds (c).

Specifically, when the measured data length is one hour or longer, one hour is selected as the first set time interval, as shown in the broken line part of FIG. If it is up to minutes, one minute is selected as the first set time interval, and if the data length is between one second and one minute, one second is selected as the first set time interval. This is automatically selected by an audio data editing device that edits audio data.

Hereinafter, the expression "data division" will be used from the description on the drawings. However, as described above, the data is not actually divided, but the position data of the time interval previously stored in the storage means is used. The temporary reference position is set by applying the audio data. For example, in FIG.
When the total data length is one hour or more, the audio data is first divided in units of time (FIG. 3A). Then, when a predetermined position among the positions divided in time units 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 has heard the repeated playback determines whether this position can be determined as the reference position. If it is determined that the position should be set to a different position, 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,
Reproduction is performed each time. Then, as a result of listening to the repeated reproduction, if this temporary reference position x is acceptable, this position is determined as the reference position.

When the reference position is determined in units of time, the audio data is divided in units of minutes around the reference position determined in units of time (FIG. 3B). Then, by selecting the temporary reference position x at a predetermined position divided in minutes, the audio data as shown in FIG. 1 is repeatedly reproduced at the selected position. The data editing worker who has heard the repeated playback determines whether or not the temporary reference position can be determined as the reference position. If it is determined that the position should be set to a different position, another position among the positions divided in minutes is selected as the temporary reference position x, and if this position is acceptable, this position is determined as the reference position.

When the reference position in minutes is determined, the audio data is divided in seconds around the reference position determined in minutes (FIG. 3 (c)).
Then, by selecting the reference position at a predetermined position divided in seconds, audio data as shown in FIG. 1 is repeatedly reproduced at the selected position. The data editing worker who has heard the repeated playback determines whether or not the temporary reference position can be determined as the reference position. If it is determined that the position should be set to a different position, another position among the positions divided in seconds is selected as the temporary reference position x, and if this position is acceptable, this position is determined as the reference position.

Finally, the division of the audio data at the set time intervals is performed up to the frame unit. A frame refers to a unit for encoding or decoding audio data at one time, and here, 1/20 second (0.05 second) is defined as one frame. That is, when the reference position in seconds is determined, the audio data is divided in frame units with the reference position determined in seconds as the center ((d) in FIG. 3). Then, by selecting a predetermined position divided on a frame basis 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 repetitive playback finally determines whether or not this temporary reference position may be set as the reference position, and if it is determined that the temporary reference position should be set to a different position, another one of the positions divided in frame units is used. The position is selected as the provisional reference position x, and if it is acceptable, this position is determined as the reference position.
When the setting of the reference position is finally performed for each frame, the process ends. As described above, since the setting of the reference position is narrowed down to the frame unit, the reference position can be accurately determined.

As described above, the audio data editing apparatus automatically performs the narrowing down by dividing the temporary reference position at the set time intervals at the set time intervals into gradually shorter time periods. Further, the division of the set time interval in a plurality of stages is always performed up to the frame unit.

Next, an audio data editing apparatus according to 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 only a device having only an editing function, but also a reproducing function of reproducing data in a storage medium,
This is a device that has a sound editing function in a general sound reproducing device that also has a recording function of writing data in a storage medium and the like.

A storage medium 32 stores audio data to be edited. The storage medium 32 is a CD,
Memory cards, IC cards, and the like are used. The input means 34 includes a dial 24, a decision switch 22, and a cancel switch 26 as shown in FIG. Such input means 3
By means of 4, it is possible to instruct the control means, which will be described later, on data editing operations such as selection of audio data to be edited, selection of a reference position, determination of these, and cancellation of these.

The reading means 36 is a component for reading audio data from the storage medium 32.
If this is the case, the optical pickup, and if the storage medium 32 is a memory card / IC card or the like, the input interface circuit corresponds to the reading means 36. The display means 38 has a simple configuration if a seven-segment display means as shown in FIG. 5 is used. The display means 38 displays the currently set reference position.

The audio data read by the reading means 36 is temporarily stored in a storage means 40 comprising a semiconductor memory or the like. A selection instruction signal or the like for selecting a temporary reference position input from the input means 34 is input to the control means 42. The control means 42 includes a provisional setting means, an automatic reproduction means, a selection means, a determination means, and the like as described in the claims, and also comprises a microcomputer.
The selection means and the determination means are the input means 34 and the control means 4.
Combination with 2.

Then, the control means 42 transmits the audio data in the storage means 40 via the automatic reproduction means based on the instruction from the input means 34 for a predetermined time from the set temporary reference position via the reproduction means 46. The signal is repeatedly output from the speaker 48. The automatic reproducing means includes a reproducing means 46, a storage means 40 in which audio data is stored, and a control means 42 for controlling these. When the operator presses the determination switch 22 to determine the temporary reference position as the reference position, the control means 42 further shortens the set time interval from the beginning of the audio data in the storage means 40 to separate the audio data. The audio data is automatically reproduced at the temporary reference position set by the operator. Finally, after narrowing down the reference position in frame units,
The audio data for which the reference position has been determined is deleted before or after the determined reference position on the reproduction time axis. Then, the deleted audio data is recorded on the storage medium 32 via the writing means 50.

Next, FIG. 6 shows a flowchart for explaining the audio data editing method of the present invention. Based on this, the audio data editing method using the audio data editing apparatus will be described in further detail. First, in step S102, when there are a plurality of audio data, the audio data to be edited is selected from the audio data. Then, S1
In steps 04 and S106, the data length of the selected audio data is measured, and a set time interval having a length corresponding to the data length, which divides the audio data used to select the reference position, is selected.

Next, in step S108, a selection is made as to whether to delete the part before or on the reproduction time axis from the reference position that can be set on the audio data. If the area before the reference position is to be deleted, the process proceeds to S110. If the area after the reference position is to be deleted, the process proceeds to S111.

The case where the process proceeds to S110 will be described. In S110, the CPU selects where in the unit time the temporary reference position is set in the audio data delimited by the unit time selected in S106. And S112
In, the audio data from the temporary reference position set in S110 is reproduced for 3 seconds. The reproduction for three seconds is continuously repeated three times.

The operations of S110 and S112 will be specifically described. First, in S110, the display unit 38 of FIG.
Then, any of "0H" to "2H" shown in FIG. 3 is displayed. This display can be displayed by selecting any one of “0H” to “2H” by turning the dial 24. Then, by turning the dial 24 and displaying, for example, "1H", at the time when this display appears, the data of 3 seconds from the beginning of 2 hours to the end of 2 hours and 3 seconds from the beginning of the audio data is displayed. Play repeatedly (Figure 3)
(A) P).

In S114, as a result of listening to the reproduced data as to whether or not the temporary reference position set in S110 is acceptable, the operator makes a decision and determines whether or not this temporary reference position is to be the reference position. That is, if the audio portion 11 is cut off or the silent portion 12 remains at the temporary reference position x set in S110, it is necessary to set the temporary reference position x again. When it is determined that the position set in S110 is sufficient, the operator presses the determination switch 22, the reference position is determined, and the process proceeds to S116. If the user temporarily sets a different position, the process returns to step S110 and the dial 24 is turned again to listen to the audio data. In this way, until the exact reference position is determined, within the same set time interval,
S110 to S114 can be repeated many times.

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. The set time interval is set. Specifically, for example, after the determination switch 22 is depressed at “2H” in FIG. 2 to determine the reference position, the temporary reference position is set in units of minutes. The setting is made in units of minutes centering on the first two hours.

The 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 previously set time interval (here, it is set at a position two hours from the beginning of the audio data). The position of two hours from the head of the data is displayed as “00”, and two hours and one minute after the head is displayed as “01”.

Then, if the dial 24 is turned to display, for example, "59", the data for three seconds after the elapse of one hour and 59 minutes from the beginning of the audio data is reproduced three times at the time when this display appears. (Q in FIG. 3B). S11
At 4, the operator listens to the reproduced data as to whether or not the temporary reference position set at S110 is acceptable. As a result, the operator determines. Hereinafter, the setting of the reference position in seconds and the setting of the reference position in frames are omitted.

If the setting of the reference position has been completed up to the frame unit, the flow shifts to S120, where the actually determined position is set as the reference position, and audio data earlier than the reference position is deleted. Then, the audio data with the part deleted from the reference position is written to the storage medium in S122, and a series of audio data editing work ends.

It should be noted that even if it is determined in S108 that the audio data after the reference position is to be deleted and the process proceeds to S111, the process proceeds to S110 and the data before the reference position is deleted. The basic reference position setting operation is the same. The only difference is that the reproduction from S3 to the reference position three times before the reference position where the reproduction of the audio data is selected is repeated three times in S113.

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, after S117 and S119, the reference position is determined at gradually shorter set time intervals, and finally is determined up to the time interval in frame units. When the reference position is determined up to the frame unit, the audio data after the reference position is deleted in S130. The audio data after the deletion is written to the storage medium in S122.

Pressing the cancel switch 26 shown in FIG. 5 returns to the set time interval earlier than the currently set time interval, determines the reference position at the previous time interval again, and again. It is also possible to determine another position (through a process as indicated by an arrow in FIG. 2).

Display means 2 for displaying a unit time, etc.
If 0 is used, it is preferable to use a seven-segment display means so that audio data can be edited with a simple configuration. However, the display unit is not limited to the seven-segment display means.

When the reference position is set by the dial 24, the audio data to be reproduced are from three seconds before and three seconds after the provisional reference position in S114 and S115, respectively. However, the reproduction time may be adjustable. In this way, the playback time can be shortened for the operator, and the audio data can be edited more quickly.

Furthermore, it has been described that the above-described audio data editing apparatus and audio data editing method are used to delete a silent portion on audio data, but the editing apparatus and editing method of the present invention are not limited to this. Not limiting,
When the reference position is determined, another audio data may be recorded at the reference position, or the audio data may be simply divided at the determined reference position.

Although the present invention has been described in detail with reference to the preferred embodiments, the present invention is not limited to these embodiments, and many modifications can be made without departing from the spirit of the invention. Of course.

[0041]

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 temporary setting means of the audio data set by the temporary setting means. The audio data from the temporary reference position before the predetermined time to the temporary reference position and / or the audio data from the temporary reference position set by the temporary setting means to after the predetermined time has passed from the temporary reference position are automatically generated a predetermined number of times. An automatic reproducing means for repetitive reproduction and a determining means capable of determining a reference position at the temporary reference position after the repeated reproduction by the automatic reproducing means are provided. Since you can repeatedly hear the content of the playback data at this position as a position,
The quality of the temporary reference position can be easily determined, and the reference position can be accurately determined by a simple operation.

[Brief description of the drawings]

FIG. 1 is an explanatory diagram illustrating a concept of editing audio data.

FIG. 2 is an explanatory diagram illustrating an audio data editing method according to the present invention.

FIG. 3 is an explanatory diagram for explaining setting at a temporary reference position at set time intervals in setting of a temporary reference position shown in FIG. 2;

FIG. 4 is a block diagram illustrating a configuration of an audio data editing device according to the present invention.

FIG. 5 is an explanatory diagram for explaining an operation panel.

FIG. 6 is a flowchart illustrating an embodiment of an audio data editing method.

FIG. 7 is an explanatory diagram showing a waveform of audio data.

[Explanation of symbols]

 Reference Signs List 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 reproduction means 48 speaker 50 writing means

Continued on front page (72) Inventor Takuro Shiraki 6-15-26 Chuo, Ueda-shi, Nagano Shinanokenshi Co., Ltd. Electronic Equipment Division (72) Inventor Tetsushi Sugawara 4-3-1 Tsunashima Higashi, Kohoku-ku, Yokohama-shi, Kanagawa Matsushita Communication Industrial Co., Ltd. F-term (reference) 5D045 AB21 DB01

Claims (5)

[Claims] 1. An audio data editing device for setting a reference position on a reproduction time axis of audio data and editing the audio data based on the reference position, wherein a temporary reference position is set on the reproduction time axis of the audio data. A temporary setting means to be set; and, of the audio data, audio data from a predetermined time before the temporary reference position set by the temporary setting means to the temporary reference position and / or a temporary reference position set by the temporary setting means. An automatic reproduction means for automatically and repeatedly reproducing the audio data a predetermined number of times from the temporary reference position until a predetermined time has elapsed; and after the repeated reproduction by the automatic reproduction means, the operator can determine the reference position at the temporary reference position An audio data editing device comprising: a determination unit. 2. A storage means for storing position data of a position on the reproduction time axis of audio data which is divided from a head of the audio data by a set time interval of a plurality of long and short stages, and storing the predetermined position data of the arbitrary stage Selecting means for selecting, and using the position selected by the selecting means as the temporary reference position, audio data from a predetermined time before the temporary reference position to the temporary reference position and / or the temporary reference position set by the temporary setting means. Automatic reproduction means for automatically and repeatedly reproducing audio data a predetermined number of times from the temporary reference position until a predetermined time has elapsed, and after the automatic reproduction means repeatedly reproduces, an operator can determine the reference position at the temporary reference position 2. The audio data editing apparatus according to claim 1, further comprising a determination unit. 3. The audio data editing apparatus according to claim 1, further comprising display means for displaying position data of said provisionally set provisional reference position. 4. An audio data editing method for setting a reference position on a reproduction time axis of audio data and editing audio data with reference to the reference position, wherein the reference position is temporarily set, and the temporarily set temporary reference is set. The audio data from a predetermined time before the position to the temporary reference position and / or the audio data from the temporary reference position and after a predetermined time from the temporary reference position are automatically and repeatedly reproduced a predetermined number of times. And determining a reference position as the temporary reference position. 5. When setting the temporary reference position, a predetermined position at an arbitrary stage among positions divided on a reproduction time axis of the audio data from a head of the audio data by a set time interval of plural long and short stages. Is automatically set as the temporary reference position, and audio data from a predetermined time before the temporary reference position to the temporary reference position and / or audio data from the temporary reference position after a predetermined time from the temporary reference position are automatically determined. Repeated reproduction by the number of times, after repeated reproduction by the automatic reproduction means, the operator determines a reference position as the temporary reference position, and selects a set time interval shorter than the selected set time interval among the set time intervals. 5. The audio data editing method according to claim 4, wherein the temporary reference position is set, and the set time interval is automatically gradually reduced to narrow down the temporary reference position to an optimum position. .