JPH06176543A - Audio data base building processor - Google Patents

Abstract

PURPOSE:To automatically build an audio data base for managing audio data files in accordance with the results of analysis of the physical characteristics of the arbitrary audio data and efficiently utilize the audio data base. CONSTITUTION:The audio data base is built in a memory means 6 by analyzing means 2-1 to 2-n for analyzing the one to plural physical characteristics of the arbitrary audio data, a reference code forming means 3 in accordance with the results of the analyses, a file name inputting means 4 and an audio data file forming means 5. A retrieval function of the audio data base is built by a reference code inputting means 7, a reference code comparing means 8 and a display means 10 and further, the audio data having the desired physical characteristics is formed by an audio data processing means 11.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an audio data construction processing device used in an audio editing studio or the like and utilizing various audio data filters for voice, musical sound, sound effect and the like.

[0002]

2. Description of the Related Art Conventionally, in an audio editing studio, various audio files such as voices, musical sounds, and sound effects have been recorded on a magnetic tape or a CD as a sound library, and an audio file required by an editing operator. The file was searched mainly by the file name of the audio file and called.

[0003]

However, the number of files in the audio database used in an audio editing studio, etc., that is, the kind and number of sound material amounts to several hundreds or thousands, and all of them in the database. It is skillful and difficult to fully understand the full contents of the sound material and make the most of it. Further, the audio information of the sound material cannot be expressed only by the character information of the file name, and it is possible that the sound material selected by the file name as a search means does not match the image of the sound desired by the editing operator. .

In view of the above points, it is an object of the present invention to allow the reference code in the audio file to be effectively utilized during the database search operation and to efficiently utilize the database.

[0005]

SUMMARY OF THE INVENTION The present invention comprises analysis means for analyzing a database of audio data files into one or more physical characteristics of arbitrary audio data,
Reference code creating means for creating one or more reference codes based on the analysis result of the analyzing means; file name input means for inputting a file name of an audio data file; and output of the reference code creating means for the audio data. The audio data file creating means for creating the audio data file by giving the output of the file name input means is built in the storage means such as a hard disk.

Further, a reference code input means for inputting one or a plurality of reference codes and a reference code of each audio data file in the audio database are accessed to output the reference code creating means or the output of the reference code input means. And a display means for displaying the output data of the reference code comparison means constitute a search function of an audio database, and an audio data processing means configures a desired physical data from an audio data file in the database. It is also possible to create audio data having characteristics.

[0007]

According to the present invention, the reference code in the audio data file can be effectively utilized when searching the database. Therefore, even a person who is not familiar with the entire contents of the audio database or a person who has little work experience can use the database efficiently. In addition, the capacity of the audio database can be apparently increased by converting the audio data into desired physical characteristics.

[0008]

1 is a block diagram showing the configuration of an audio database construction processing device in an embodiment of the present invention. In the figure, 1 is an audio data input terminal, 2-1 to 2-n
Is an analyzing means for inputting audio data, analyzing n kinds of physical characteristics and outputting the result, 3 is an analyzing means
Reference code creating means for combining n pieces of output data 2-1 to 2-n to create reference code data, 4 is a file name input means for inputting a file name of an audio data file, and 5 is audio data and reference An audio data file creating means for creating an audio data file from code data and a file name, 6 is a storage means by a hard disk device, 7 is a reference code input means capable of inputting one or a plurality of reference codes, and 8 is a reference for comparing reference codes. Code comparison means, 9 is a changeover switch for connecting the output of the reference code creation means 3 to either the audio data file creation means 5 or the reference code comparison means 8, and 10 is a CRT or the like for displaying the output contents of the reference code comparison means 8. Display means 11 and reference code comparison means 8
An audio data processing means for converting arbitrary audio data in the audio database into audio data having desired physical characteristics based on the output data of the above, and 12 is an output terminal of the audio data.

The operation of this embodiment constituted by the above system will be described.

Various audio data such as voices, musical sounds, and sound effects input from the input terminal 1 are analyzed by the analyzing means 2-1 to 2-2.
-n analyzes n types of physical properties. The physical characteristics analyzed include, for example, duration of audio data, frequency spectrum by fast Fourier transform (FFT), pitch of musical tone by analysis of harmonic components, evaluation of timbre, duration of sound by decay time, pulse property. Of the voice, non-voice discrimination and music tempo by linear predictive coding (LPC) analysis.
The analyzing means 2-1 to 2-n analyze the above n kinds of physical characteristics and output the result to the reference code creating means 3 as reference code data for each item.

When registering the analyzed audio data in the audio database in this way, the reference code creating means 3 and the audio data file creating means 5 are connected by the changeover switch 9, and the audio data file creating means 5 The reference code data and the file name input by the file name input means 4 are added to the audio data input from the input terminal 1 to create an audio data file. Therefore, each audio data file registered in the audio database stored in the storage means 6 has a file name and reference code information relating to various physical characteristics in the original audio data.

On the other hand, in the case of searching for an audio data file in the audio database, processing it as necessary, and outputting it, not only the file name but also the reference code information of the audio data file can be used. The audio data editing operator inputs a desired reference code for one or a plurality of items by the reference code inputting means 7 or inputs a sound material having physical characteristics close to the image of the sound desired by the editing operator. Input from 1 and analyze means 2-1 to 2 as in the case of database registration
The reference code data to be searched is set by creating a reference code by -n and the reference code creating means 3 or by combining the reference codes from either one or both.

The reference code comparing means 8 outputs the reference code data output from the reference code inputting means 7 or the reference code creating means 3 and the reference code of each audio data file in the audio database stored in the storing means 6 one by one. The result information such as the file name of the audio file having the closest reference code data is compared and presented on the display means 10 such as a CRT.

The storage means 6 in which the audio database is stored here uses a hard disk device in consideration of high-speed and random access capability to each audio data file.

Further, regarding different items between the reference code data used for the search and the reference code data of the audio data file existing in the audio database, the audio data processing means 11 converts the audio data into desired physical characteristics. And output from the output terminal 12.

For example, when the reference code comparison means 8 searches for an audio data file in which the reference code data relating to other physical characteristics is the same as the reference code data used for the retrieval except the item relating to the duration of the audio data, the audio data file is searched. By subjecting the data to compression / expansion processing in the time axis direction, audio data having the same desired physical characteristics that do not exist in the audio database can be obtained at the output terminal 12.

Similarly, the audio data processing means 11
Examples of the audio data processing performed in step 1 include equalizing on the frequency characteristic and pitch shifting of the fundamental frequency.

[0018]

As described above, the audio database construction processing device of the present invention analyzes one or more physical characteristics of arbitrary audio data, and automatically creates an audio database using a reference code based on the analysis result. Can be built into. The reference code can also be used effectively when searching the database. Therefore, even a person who is not familiar with the entire contents of the audio database or a person who has little work experience can use the database efficiently. Further, the capacity of the audio database can be apparently increased by converting the audio data into desired physical characteristics by using the information of the reference code.

[Brief description of drawings]

FIG. 1 is a block diagram showing a configuration of an audio database construction processing device according to an embodiment of the present invention.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Input terminal, 2-1 to 2-n ... Analysis means, 3 ... Reference code creation means, 4 ... File name input means, 5 ... Audio data file creation means, 6 ... Storage means,
7 ... Reference code input means, 8 ... Reference code comparison means,
9 ... Changeover switch, 10 ... Display means, 11 ... Audio data processing means, 12 ... Output terminal.

Claims (3)

[Claims] 1. An analyzing means for analyzing one or a plurality of physical characteristics of arbitrary audio data, a reference code creating means for creating one or a plurality of reference codes based on an analysis result of the analyzing means, and an audio data file. File name input means for inputting a file name; audio data file creation means for creating an audio data file by adding the output of the reference code creation means and the output of the file name input means to the audio data; An audio database construction processing device comprising: a storage unit for storing a file. 2. A reference code input means for inputting the one or a plurality of reference codes and a reference code of each audio data file in the audio database are accessed to output the reference code creation means or the reference code input means. The audio according to claim 1, further comprising: a reference code comparing means for comparing the reference code and a display means for displaying output data of the reference code comparing means, and having a search function of an audio database based on the reference code. Database construction processor. 3. An analyzing means for analyzing one or a plurality of physical characteristics of arbitrary audio data, a reference code creating means for creating one or a plurality of reference codes based on an analysis result of the analyzing means, and an audio data file. File name input means for inputting a file name; audio data file creation means for creating an audio data file by adding the output of the reference code creation means and the output of the file name input means to the audio data; Audio data processing means comprising a storage means for storing a file and capable of converting arbitrary audio data in the audio database into audio data having different physical characteristics based on output data of the reference code comparing means and outputting the audio data. Special to have Audio database construction processing device for collection.