JP4444459B2 - Multitrack recorder with preview function - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention records audio data on a plurality of tracks, or imports (stores) PCM data obtained from a PCM data file (a file made up of encoded audio data such as WAV files and AIFF files) on a plurality of tracks. And a multi-track recorder that can reproduce the data of each track after editing, and in particular, a multi-track recorder having a preview function that allows a part of the PCM data contained in the PCM data file to be heard in advance. About.
[0002]
[Prior art]
A multi-track recorder is conventionally known as a device for recording a plurality of voices separately, reproducing the recorded voices as appropriate, and reproducing them. Since the multi-track recorder can record voice data (voiced sound or instrumental sound data) on each of a plurality of tracks, for example, the piano music is recorded on the first track and the second track is recorded. If you record a drum sound, you can edit and output these sounds (piano sound and drum sound), which is extremely useful when recording in a studio, for example.
[0003]
FIG. 4 is a functional block diagram schematically showing the configuration of a conventional multitrack recorder and its peripheral devices. As shown in the figure, the multitrack recorder 101 includes an A / D converter 103 that digitizes an audio signal obtained from a microphone or a sound source device, and a recording buffer that temporarily stores the digitized audio signal. 104, a PCM data file stored in an external storage device (CD-ROM or the like) 108, or a file storage unit 105 for storing audio signal data temporarily stored in the recording buffer 104, and a recorder 109. ing.
[0004]
Furthermore, a rhythm data storage unit 106 in which rhythm data is stored in advance, and a rhythm oscillator 107 for outputting the rhythm sound stored in the rhythm data storage unit 106 are provided.
[0005]
The recorder 109 has a plurality of tracks (for example, 16 tracks), and stores the audio data stored in the recording buffer 104 as a PCM data file in the file storage unit 105 and the file storage unit 105. The PCM data file has a function of outputting each track for each track.
[0006]
In the multitrack recorder 101 having such a configuration, audio data obtained from a microphone or a sound source device or PCM data files imported from the external storage device 108 are stored in a plurality of tracks of the recorder 109 and then edited. Can be output. Also, since the rhythm sound data stored in the rhythm data storage unit 106 can be read and output by the rhythm oscillator 107, the rhythm sound is output separately from the sound output from the recorder 109 described above. be able to.
[0007]
In such a conventional multi-track recorder 101, when the PCM data file is imported into the recorder 109, when the operator does not grasp the contents of the PCM data file, that is, the audio written in the PCM data file. If it is not possible to know what kind of voice the data is, for the time being, this PCM data file is imported into an arbitrary track in the recorder 109, and this PCM data file is reproduced and listened to, so that the PCM data You need to check the contents of the file.
[0008]
However, when the amount of data in the PCM data file is large, for example, when one piece of music is written in the PCM data file, the PCM data file stored in the external storage device 108 is imported to the recorder. It takes a long time to store in 109.
[0009]
Therefore, when the PCM data file imported into the recorder 109 is different from the desired file, it is necessary to import another PCM data file again and confirm its contents, which is extremely difficult for the operator. It becomes a troublesome work.
[0010]
Also, when a PCM data file is imported, the PCM data file is overwritten on the audio data (existing data) previously stored in the track of the recorder 109, so it is simply stored in the external storage device 108. Even if there is a request to confirm the contents of the PCM data file, the existing data of one track of the recorder 109 is destroyed.
[0011]
[Problems to be solved by the invention]
As described above, in the conventional multitrack recorder 101, when confirming the contents of the PCM data file stored in the external storage device 108, the PCM data file is once imported into the recorder 109 and then reproduced. Therefore, when there is a large amount of data in the PCM data file, it takes a long time to confirm the contents. Also, in order to confirm the contents of the PCM data file, it is necessary to overwrite the track using one track of the recorder 109, so that the existing audio data stored in this track is destroyed. There were drawbacks.
[0012]
The present invention has been made to solve such a conventional problem, and an object of the present invention is to listen to a part of the voice of the PCM data file stored in the external storage device 108 with a simple operation. Another object of the present invention is to provide a multitrack recorder having a preview function.
[0013]
[Means for Solving the Problems]
In order to achieve the above object, the present invention has a plurality of tracks, stores audio data or PCM data read from a PCM data file stored in an external storage means in the tracks, and stores the data in each track. In a multitrack recorder that plays after editing the recorded data,
A recording buffer for temporarily storing the audio data or a part of the PCM data when input;
A recorder for outputting the audio data stored in each track of the plurality of tracks have a storage area of a plurality of tracks,
Rhythm data storage means for storing rhythm data;
A rhythm oscillator for outputting the rhythm data stored in the rhythm data storage means, and a file storage means,
The file storage means includes
A function for storing audio data temporarily stored in the recording buffer, a function for storing a PCM data file stored in the external storage means, and audio data to any track of the recorder during data reproduction Output function,
When a preview instruction operation for listening to a part of PCM data contained in the PCM data file stored in the external storage means is performed, a part of the PCM data is written into the recording buffer and then written into the recording buffer. The rhythm oscillator is configured so that a part of the PCM data can be reproduced by the rhythm oscillator.
[0015]
Further, the recording buffer can also be characterized by writing the PCM data included in the PCM data file, the beginning portion.
[0016]
According to the present invention configured as described above, if the operator cannot grasp the contents of the PCM data file (WAV file, AIFF file, etc.) stored in the external storage device, it is included in the PCM data file. A part of the PCM data is written in the recording buffer, and this data is reproduced by an audio data reproducing means (rhythm oscillator), whereby the contents of the PCM data file can be confirmed. Therefore, the contents of the PCM data file can be confirmed with a simple operation, and the contents of the PCM data file can be confirmed without deleting the existing audio data stored in the track.
[0017]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a hardware configuration diagram showing a configuration of a multitrack recorder according to an embodiment of the present invention, and FIG. 2 is a functional block diagram showing a characteristic portion of the embodiment.
[0018]
As shown in FIG. 1, the multitrack recorder 1 includes a CPU 2 serving as a control center, a switch 3 for performing various operation inputs, a display 4, a dedicated LSI 5, a hard disk 6, a main storage unit 7, and a CD. An external interface 8 connected to an external storage device 11 such as a ROM drive or an MO drive, an A / D converter 9 and a D / A converter 10 are provided. The dedicated LSI 5 includes a dedicated memory 5a.
[0019]
The recorder 21, the recording buffer 22, the rhythm oscillator (sound data reproducing means) 23, and the rhythm data storage unit 24 shown in FIG. 2 are mounted on the dedicated LSI 5 shown in FIG.
[0020]
The recorder 21 has a plurality of tracks (for example, 16 tracks), and can edit and output audio data stored in each track.
[0021]
The recording buffer 22 temporarily stores and saves an audio signal input from an external sound source device or microphone, and then stores the stored audio data in the file storage unit 25. The recording buffer mentioned here is not limited to a dedicated buffer, but can be realized by using another memory in the same system. Further, as will be described later, the recording buffer 22 stores a part of PCM data of the PCM data file stored in the external storage means 11 when executing the preview function.
[0022]
The rhythm data storage unit 24 stores rhythm sound data in advance. The rhythm oscillator 23 performs control for outputting the rhythm sound stored in the rhythm data storage unit 24 separately from the sound output by the recorder 21. As will be described later, when the preview function is executed, control is performed to reproduce and output the PCM data stored in the recording buffer 22.
[0023]
Further, the file storage unit 25 shown in FIG. 2 exists in the hard disk 6 shown in FIG. 1, and stores the audio data temporarily stored in the recording buffer 22 and stored in the external storage device 11. It has a function of storing a PCM data file, and outputs audio data to a desired track of the recorder 21 during data reproduction. As the PCM data file in this embodiment, a WAV file, an AIFF file, and an audio format file specific to each model can be used.
[0024]
Next, the operation of the present embodiment configured as described above will be described with reference to the flowchart shown in FIG. When the operator wants to confirm the contents of the PCM data file stored in the external storage device 11, the operator inputs a desired operation using the switch 3 shown in FIG. Thereby, a process of opening the PCM data file stored in the external storage device 11 is executed (step ST1).
[0025]
Then, it is confirmed whether or not the PCM data file is in a format that can be imported into the recorder 21 (such as whether the sampling frequency and the number of quantization bits are suitable) (step ST2). If the file cannot be imported (NO in step ST3), it is determined that there is an error at this point, and the operation for importing the file is terminated (step ST4).
[0026]
If the file can be imported (YES in step ST3), reading of the PCM data contained in the PCM data file is started, and the head portion of the PCM data is searched (step ST5). If the head portion cannot be searched (NO in step ST6), it is determined that there is an error, and the process is terminated (step ST7).
[0027]
If the head part can be searched (YES in step ST6), the PCM data of the PCM data file is converted into a format that can be read by the rhythm oscillator 23, and a part of the head part of the PCM data (for example, The first 3 seconds portion) is extracted, and the extracted PCM data is written in the recording buffer 22 (step ST8).
[0028]
Thereafter, the reading destination of the rhythm oscillator 23 is switched from the rhythm data storage unit 24 to the recording buffer 22, and the rhythm oscillator 23 performs an operation of outputting the PCM data stored in the recording buffer 22 by voice (step ST9). ). In this way, the operator can listen to the head portion of the PCM data included in the PCM data file (hereinafter referred to as a preview).
[0029]
Then, when the head portion of the PCM data file is confirmed by using the preview function described above, the PCM data file is imported in the same procedure as before.
[0030]
That is, by inputting a desired operation using the switch 3 shown in FIG. 1, the PCM data file stored in the external storage device 11 is input via the external interface 8 shown in FIG. The data is stored in the (hard disk 6) and then imported into a desired track of the recorder 21 (FIG. 2).
[0031]
Thus, since the multitrack recorder 1 according to the present embodiment has a PCM data file preview function, the PCM data file stored in the external storage device 11 can be imported to an arbitrary track of the recorder 21. When doing so, the contents of the PCM data file can be confirmed in advance. Therefore, it is possible to avoid the troublesome work of checking the contents of the PCM data file by importing the entire PCM data file to an arbitrary track of the recorder 21 as in the prior art.
[0032]
In this embodiment, a part of the PCM data included in the PCM data file is stored in the recording buffer 22 and then played back by the rhythm oscillator 23. Therefore, when the preview function is adopted, There is no need to overwrite the track of the recorder 21. Therefore, it is possible to avoid the problem that the existing audio data stored in the track is destroyed as in the prior art.
[0033]
In the present embodiment, the first part of the PCM data included in the PCM data file is extracted and the PCM data is previewed. However, the present invention is not limited to this, and the PCM data file is not limited to this. It is also possible to preview using the intermediate part or the final part of the included PCM data.
[0034]
【The invention's effect】
As described above, according to the present invention, when the PCM data file stored in the external storage device is imported to the recorder, the contents of the PCM data file can be previewed in advance. The PCM data file to be imported can be confirmed with a simple operation.
[0035]
Further, at the time of preview, it is not necessary to write a PCM data file to be previewed on a track in the recorder, so that existing audio data of the track is not destroyed.
[Brief description of the drawings]
FIG. 1 is a block diagram showing a configuration of an embodiment of a multitrack recorder according to the present invention.
FIG. 2 is a functional block diagram showing characteristic parts of the multitrack recorder according to the present embodiment.
FIG. 3 is a flowchart showing the operation of the present embodiment.
FIG. 4 is a functional block diagram of a conventional multitrack recorder.
[Explanation of symbols]
1 Multitrack recorder 2 CPU
3 Switch 4 Display 5 Dedicated LSI
5a Dedicated memory 6 Hard disk 7 Main storage unit 8 External interface 9 A / D converter 10 D / A converter 11 External storage device 21 Recorder 22 Recording buffer 23 Rhythm oscillator (sound data reproduction means)
24 Rhythm data storage unit 25 File storage unit

Claims (1)

Multitrack which has a plurality of tracks, stores audio data or PCM data read from a PCM data file stored in an external storage means in the track, edits the data stored in each track, and reproduces it In the recorder,
A recording buffer for temporarily storing the audio data or a part of the PCM data when input;
A recorder for outputting the audio data stored in each track of the plurality of tracks have a storage area of a plurality of tracks,
Rhythm data storage means for storing rhythm data;
A rhythm oscillator for outputting the rhythm data stored in the rhythm data storage means, and a file storage means,
The file storage means includes
A function for storing audio data temporarily stored in the recording buffer, a function for storing a PCM data file stored in the external storage means, and audio data to any track of the recorder during data reproduction Output function,
When a preview instruction operation for listening to a part of the PCM data contained in the PCM data file stored in the external storage means is performed, a part of the PCM data is written into the recording buffer and then written into the recording buffer. A multitrack recorder having a preview function, wherein the rhythm oscillator is configured such that a part of the PCM data can be reproduced by the rhythm oscillator.

Images