JP2005108312A - Audio editing recording and reproducing device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To record audio data while segmenting the audio data at a discontinuity place of a time code in an audio editing recording and reproducing device. <P>SOLUTION: The audio editing recording and reproducing device is provided with a recording means by which audio data and a time code annexed to the audio data are recorded to a recording medium, an editing means by which audio data is edited and an edition list in which edition contents are described is made, a reproducing means by which audio data recorded in the recording medium is reproduced according to the edition list, a time code discontinuity place detecting means by which a discontinuity place of the time code annexed to the audio data is detected, a storing means by which the time code of the discontinuity place detected by the time code discontinuity place detecting means is stored, and a control means by which such control is performed that the edition list about the time code of discontinuity place stored by the storage means is made by the edition means and the edition list is recorded in the recording medium by the recording means. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

The present invention relates to an audio editing / recording / reproducing apparatus for editing audio data and recording and reproducing the audio data on an information recording medium such as a disc.

There is an audio editing recording / reproducing apparatus that edits audio data and records and reproduces the audio data on an information recording medium such as a disc. Such an audio editing recording / reproducing apparatus records audio data and a time code accompanying the audio data on an information recording medium, and performs editing such as duplication, movement, division, and deletion of the audio data. The time code has hour, minute, and second data, and is recorded as information that continuously indicates the passage of time of the audio data. Then, the audio editing / recording / reproducing apparatus does not edit the audio data itself recorded on the information recording medium in the editing of the audio data, but creates an editing list describing the edited contents and performs the audio editing based on the editing list. Play data.

When a set of audio data such as music, natural sounds, and sound effects (hereinafter referred to as material) is recorded on a recording medium such as DAT for use in broadcasting or the like, a time code continuous to the audio data in the material is used. In some cases, a plurality of materials are recorded as one file by separating the materials by making the time code discontinuous between the materials. When a recording medium recorded in this way is reproduced, input to an audio editing recording / reproducing apparatus and recorded on an information recording medium, the conventional audio editing recording / reproducing apparatus has a time code recording area associated with audio data. Since it is not provided, it was recorded as a file with continuous time codes through multiple materials.

When audio data is recorded on the MD by using a mini disc (hereinafter referred to as MD) as an information recording medium, the MD format does not have a time code recording area, and therefore is attached to the input audio data. Among the time codes to be recorded, the time code of the start of the track or the start and end of the track is converted into character data and recorded in the track name storage area of the UTOC (Users Table Of Contents) area of the MD, and the recorded audio data There is an optical disc apparatus that reproduces a time code at the start of a track or at the start and end of a track when it is reproduced, converts it into a format of an input time code, and outputs it (see Patent Document 1). The track described in Patent Document 1 corresponds to music used as a material in an audio editing recording / playback apparatus.
Japanese Patent Laid-Open No. 10-116483

A conventional audio editing recording / playback apparatus includes a time code recording area associated with audio data when audio data separated by discontinuous time codes between materials is input and recorded on an information recording medium. Because it was not, it was not possible to record the material separately.
The optical disc apparatus described in Patent Document 1 has information indicating the discontinuous portion even when there is a discontinuous portion of the time code for indicating a break between materials in the middle of input audio data. It was not possible to record.
When recording audio data on an information recording medium in an audio editing / recording / reproducing apparatus, there has been a demand for recording by dividing each material at discontinuous portions of the time code.

An audio editing / recording / reproducing apparatus according to claim 1 of the present application creates recording means for recording audio data and a time code associated with the audio data on a recording medium, and an editing list that edits the audio data and describes the editing contents. An audio editing / recording / reproducing apparatus comprising: editing means for reproducing and reproducing means for reproducing audio data recorded on a recording medium according to an edit list, wherein time code discontinuity for detecting a discontinuous portion of time code associated with the audio data is provided A location detection unit; a storage unit for storing the time code of the discontinuous portion detected by the time code discontinuous location detection unit; and an edit list relating to the time code of the discontinuous location stored by the storage unit in the editing unit. Control to create and record the edit list on the recording medium by the recording means In which and a Cormorant control means.

According to the audio editing / recording / reproducing apparatus of the present invention, an editing list can be created based on a time code accompanying audio data to be recorded, and audio data can be divided and recorded at discontinuous portions of the time code.

FIG. 1 is a block diagram showing the configuration of an embodiment of an audio editing / recording / reproducing apparatus according to the present invention. When audio data and time code (Time Code, hereinafter referred to as TC) reproduced by an external DAT device, a video tape recorder (hereinafter referred to as VTR), etc. are input to the audio editing / recording / reproducing device. The audio data is input to the system controller 1 and the TC is input to the TC discontinuity detection unit 4.
The system controller 1 performs editing, recording, and reproduction processing on the input audio data based on operations input from the operation unit 2. The operation unit 2 is a button for performing audio data recording and playback operations, a button for selecting an editing function and performing audio data editing operations, and a jog for specifying a TC in recording, playback and editing operations. With wheels.

The disk drive 3 records audio data input from the system controller 1 on a disk. The TC discontinuity detection unit 4 detects a discontinuous portion of the input TC, outputs a detection result to the system controller 1, and outputs TC to the system controller 1. The TC storage unit 5 stores the TC of the discontinuous portion detected by the TC discontinuity detection unit 4 input from the system controller 1. The audio output unit 6 includes a digital-analog conversion circuit and an amplifier circuit, converts audio data input from the system controller 1 into an analog audio signal, and amplifies it. The speakers 7A and 7B output analog audio signals input from the audio output unit 6 as sound. The display 8 displays an audio signal waveform based on the audio data input from the system controller 1 on the time axis.

When editing audio data, the system controller 1 creates an edit list based on an editing operation input from the operation unit 2. FIG. 6 is a diagram for explaining an edit list created by the audio editing / recording / playback apparatus according to the present embodiment. In the edit list, a serial number (No.), a file name, a file position TC, a material start TC, and a reproduction time of audio data are described. A file is configured by recording a plurality of materials in a file. The in-file position TC is a TC added to the start position of the material in the file by the system controller 1 counting the start position of the file as a reference TC (= 00: 00: 00). The material start TC is a start TC for each material input to the system controller 1 from the outside via the TC discontinuity detection unit 4 accompanying the audio data. The TC description format aa: bb: cc indicates aa hours bb minutes cc seconds. Other information may be added to the edit list and used.

Audio data is input to the system controller 1, and TC accompanying the audio data is input to the TC discontinuity detection unit 4. When recording audio data on a disc, the system controller 1 outputs the audio data, TC, and edit list to the disc drive 3 based on the recording operation input from the operation unit 2. The TC discontinuity detection unit 4 outputs the input TC to the system controller 1, detects a discontinuous part of the TC, and outputs information indicating the TC of the discontinuous part to the system controller 1. The system controller 1 describes in the edit list the TC corresponding to the discontinuous portion, which is a TC input from the outside via the TC discontinuity detection unit 4 along with the audio data, and inputs it to the system controller 1 The start TC of the audio data to be recorded is counted as 00:00:00, and the TC counted by the system controller 1 and corresponding to the discontinuous portion is described in the edit list as the in-file position TC. The TC storage unit 5 stores the in-file position TC and the material start TC of the discontinuous portions input from the system controller 1. The disk drive 3 records the audio data, TC, and edit list input from the system controller 1 on a disk loaded in the disk drive 3.

FIG. 2 is a flowchart showing an operation for detecting a discontinuous portion in one embodiment of the audio editing / recording / reproducing apparatus of the present invention. When the system controller 1 causes the TC discontinuity detection unit 4 to start the operation of detecting the discontinuity, the TC discontinuity detection unit 4 sets the previous value of TC, TCpre = 00: 00: 00, as an initial value (S1 ). The TC discontinuity detection unit 4 reads the input TC (S2) and compares it with a value obtained by adding 1 second to the previous value TCpre (S3). If TC is equal to (TCpre + 1) seconds (YES in S3), the value of TC is substituted for TCpre (S4).

If there is no operation to end the TC detection from the operation unit 2 (NO in S5), the process returns to S2 and the processing after the reading of TC is performed. If the TC and (TCpre + 1) seconds are not equal in S3 (NO in S3), the TC discontinuity detection unit 4 determines that the TC is discontinuous, and obtains information indicating the TC at the discontinuous portion in the system controller 1. To enter. The system controller 1 stores the in-file position TC and the material start TC of the discontinuous portion in the TC storage unit 5 (S6). The value of TC is substituted for TCpre (S4), and if there is no operation to end TC detection from the operation unit 2 (NO in S5), the process returns to S2 and the processing after the reading of TC is performed. If there is an operation for ending TC detection from the operation unit 2 in S5 (YES in S5), the process ends.

FIG. 3 is a diagram illustrating an example of audio data of the audio editing / recording / playback apparatus according to the present embodiment. FIG. 4 is a diagram illustrating an example of an edit list created by the audio editing / recording / playback apparatus according to the present embodiment. Here, as shown in FIG. 3 (a), the audio data input to the audio editing / recording / playback apparatus records three types of materials having different TCs over 25 minutes. The first material is recorded for 5 minutes from TC = 00: 00: 00, the second material is recorded for 10 minutes from TC = 10: 10: 00, and the third material is recorded for 10 minutes from TC = 09: 00: 00. ing.

When there is a recording start operation from the operation unit 2, the system controller 1 outputs the input audio data to the disk drive 3 to start recording on the disk, and the TC discontinuity detection unit 4 detects a TC discontinuity point. To do. When the TC discontinuity detecting unit 4 detects a discontinuous part, the in-file position TC and the material start TC of the discontinuous part are sequentially stored in the TC storage unit 5 via the system controller 1. Here, the TC stored in the storage unit 5 is shown in FIG. The in-file position TC of the first discontinuous portion is 00:05:00, and the material start TC is 10:10:00. The in-file position TC of the second discontinuous portion is 00:15:00, and the material start TC is 09:00:00. The audio data is once recorded as a series of audio data files from 00:00:00 to 25 minutes as shown in FIG. The edit list in this state is a series of audio data as shown in FIG. 4A, in-file position TC = 00: 00: 00, material start TC = 00: 00: 00, and playback time 25 minutes.

The system controller 1 creates an edit list using time codes of two discontinuous portions. First, editing is performed to divide a series of audio data at each discontinuous portion. Since the in-file position TC at the first discontinuous portion is 00:05:00, the file is divided 5 minutes after the beginning of the series of audio data shown in FIG. Since the in-file position TC at the second discontinuous point is 00:15:00, it is divided after 15 minutes from the beginning of the series of audio data shown in FIG. As shown in FIG. 4 (b), the edit list in this state is the position in the file TC = 00: 00: 00, the material start TC = 00: 00: 00, the first material in the playback time of 5 minutes, Position TC = 00: 05: 00, material start TC = 10: 10: 00, second material with 10 minute playback time, file position TC = 00: 15: 00, material start TC = 09: 00: 00, It is an edit list of the 3rd material for reproduction time 10 minutes.

The display 8 displays the audio data input from the system controller 1 arranged on the time axis from the material start TC of the edit list. The audio data divided for each material is arranged at the position of the material start TC stored in the TC storage unit 5. Since the first material has a material start TC of 00:00:00, the first material is arranged as it is at 00:00:00 on the time axis. The second material moves the material start TC 10:10:00 to the position of 10:10:00 on the time axis. The third material moves the material start TC09: 00: 00 to a position of 09:00:00 on the time axis. As shown in FIG. 3C, according to the edit list, each material is arranged and displayed with the material start TC on the time axis. Here, the third material starting from 09:00:00 is displayed before the second material starting from 10:10:00. The free time between the materials is displayed as free even on the time axis display.

When reproducing the audio data, the system controller 1 reads the edit list recorded on the disc based on the reproduction operation input from the operation unit 2, and the audio data recorded on the disc is read according to the edit list. Read and output to the audio output unit 6. The audio output unit 6 converts the audio data into an analog audio signal, amplifies it, and outputs it as sound through the speakers 7A and 7B arranged on the left and right in front of the user. Without directly editing the audio data, the audio data is reproduced according to the edited content based on the edit list. In this embodiment, it can be reproduced as audio data divided for each material at discontinuous portions of TC.

Note that the audio editing / recording / playback apparatus according to the present embodiment is configured to create an edit list and record the audio data in a divided manner when one discontinuous portion is detected. Even where it should be, it may be detected as discontinuous. In order to avoid such erroneous detection, when a plurality of discontinuous portions are detected in succession, the first discontinuous portion may be determined as a discontinuous portion.

It is a block diagram which shows the structure of one Example of the audio editing recording / reproducing apparatus of this invention. It is a flowchart which shows the detection operation of the discontinuous part of one Example of the audio editing recording / reproducing apparatus of this invention. It is a figure which shows an example of the audio data of the audio editing recording / reproducing apparatus of a present Example. It is a figure which shows an example of the edit list | wrist which the audio editing recording / reproducing apparatus of a present Example produces. It is a figure which shows an example of TC which the TC memory | storage part 5 of a present Example memorize | stores. It is a figure for demonstrating the edit list which the audio editing recording / reproducing apparatus of a present Example produces.

Explanation of symbols

1 System controller 2 Operation unit 3 Disk drive 4 Time code discontinuity detection unit (TC discontinuity detection unit)
5 Time code storage unit (TC storage unit)
6 Audio output part 7A, 7B Speaker 8 Display

Claims (1)

Recording means for recording audio data and a time code associated with the audio data on a recording medium, editing means for editing the audio data and creating an edit list describing the editing content, and editing the audio data recorded on the recording medium An audio editing / recording / reproducing apparatus comprising reproducing means for reproducing according to a list, wherein the time code discontinuous part detecting means for detecting a discontinuous part of a time code accompanying audio data and the time code discontinuous part detecting means detect A storage means for storing the time code of the discontinuous portion, and an editing list relating to the time code of the discontinuous portion stored by the storage means is created in the editing means, and the editing list is recorded on a recording medium by the recording means. Audio editing characterized by comprising control means for performing control Recording and reproducing apparatus.

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