JPH02211800A - Sound field control code input device - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed Description of the Invention] Industrial Field of Application The present invention relates to a sound field control code input device for making it possible to reproduce recorded sound in an arbitrary sound field or a sound field that matches an image. .

2. Description of the Related Art In recent years, emphasis has been placed on realistic sound field reproduction, and sound field variable devices capable of simulating the sound field of a hall or the like have been developed.

FIG. 4 is a block diagram showing a sound field varying method of a conventional sound field varying device.

In FIG. 4, 1 is an audio signal input means for inputting an audio signal, 4 is a sound field control code input means for inputting a sound field control code, 9 is a sound field variable device, and 11 is a sound field control code input means for inputting an input sound field control code. A transmitting means for transmitting the signal to the field variable device, 12 is an amplifier, and 13 is a speaker.

The operation of the sound field varying method of the conventional sound field varying device configured as above will be explained. In FIG. 4, the signal from the audio input means 1 is reproduced by a sound field variable device 9 in an arbitrary sound field. If the operator wants to change the sound field during playback, the operator selects the code for the sound field he or she wants to achieve, inputs the sound field control code from the sound field control code input means 4, and transmits the sound field variable device 9 by the transmitting means. By transmitting the sound field control code to the sound field, it is possible to arbitrarily vary the sound field.

Problems to be Solved by the Invention However, with the above configuration, when trying to play the same music source, the sound field must be changed manually, so it is difficult to always change the sound field in the same scene, and it is difficult to change the sound field many times. There was a problem in that repeating the same operation was time consuming.

In view of the above-mentioned problems, the present invention is a sound field control code input device that enables sound field variation using only a digital audio tape by recording the sound field control code in the subcode area of a digital audio chip. The purpose is to provide the following.

Means for Solving the Problems In order to solve the above problems, the sound field control code input device of the present invention includes a sound field control code input means for selecting a sound field in synchronization with an audio signal, and a sound field control code from the input means. It consists of a sound field control code writing means for writing into the sub data area of the digital audio tape.

Alternatively, it is composed of a time code reading means for reading out the time code recorded on the digital audio tape, and a control means for comparing the changing time of the input sound field control code with the time code and outputting the sound field control code. There is.

Function: With this configuration, the sound field III control code synchronized with the audio signal is written in the subcode area of the digital audio tape, the sound field control code recorded during playback is read, and the sound field control code is output to the sound field variable device. It is possible to control.

EXAMPLE Hereinafter, an example of the present invention will be described with reference to the drawings.

FIG. 1 is a block diagram of a sound field control code input device in a first embodiment of the present invention. In FIG. 1, 1 is an audio signal input means, 2 is an audio recording means for recording the input audio signal, and 3 is a controller for controlling a sound field variable device 9 for realizing a sound field that matches the input audio signal. 4 is a sound field control code recording means for recording the sound field control code on the digital audio tape 5; 7 is for reading out the sound field control code recorded on the digital audio tape. , a sound field control code reading means, and 8 a data transmitting means for transmitting the read sound field control code to the sound field variable bag W9.

The operation of the sound field control code input device configured as described above will be described below. In FIG. 1, an audio signal inputted by an audio signal input means 1 is converted by an audio signal recording means 2 into a format recordable on a digital audio tape 5, and is recorded as a signal synchronized with the video.

On the other hand, the sound field control code is recorded during the audio recording or during reproduction of the already recorded audio signal. first,
Select the sound field you want to achieve according to the input audio signal,
The sound field control code input means 3 inputs the code, and the sound field control code recording means 2 converts it into a format that can be recorded on a digital audio chip and records it. The part where the sound field control code is written is the sub-data part of the sub-data area. FIG. 2 shows a format of the sub-data area and an example of recording the sound field control code. In this embodiment, an 8-bit ASCII code is used as the sound field control code, and only the numbers of the sound field data stored in advance in the sound field variable device 9 are recorded as the sound field control data. The sound field control code recorded in the digital audio chip 5 is read out by the sound field control code reading means 7 during playback, transferred to the sound field variable device 9 by the data transmitting means 8, and set in the sound field variable device 9. change the sound field data.

As described above, according to this embodiment, the sound field control code input by the sound field control code input means is recorded in the sub-data area of the digital audio tape by the sound field control recording means, thereby synchronizing with the audio signal during playback. In the sound field
It is possible to play audio.

FIG. 3 is a block diagram showing a second embodiment of the invention. In FIG. 3, the time data reading means for reading the time data recorded on the digital audio tape is the control means for transmitting the sound field data to the sound field control code recording means 4 according to the time data, and the other first Components that are the same as those in the embodiment are given the same numbers.

The sound field control code input device configured as above will be explained with reference to the drawings.

Audio signals have already been recorded in the digital audio chip 5, and at the same time, time signals have also been recorded in the sub data area. Here, the sound field control data is recorded as dubbing. First, while reproducing the digital audio chip 5, already recorded time data is detected by the time data reading means. On the other hand, the person who inputs the sound field control code records in advance the time at which the sound field data should be changed, and inputs the sound field control code and the recording time using the sound field control code input means 3. Next, the control means compares the detected time data with the time data input by the sound field control code input means 3, and when the times match, writes the sound field control code to the sound field control code recording means 4. Output. The method for recording the sound field control code in the digital audio chip 5 is the same as in the first embodiment.

As described above, according to this embodiment, a preset time for changing the sound field and a sound field control code are inputted from the sound field control code input means, and the By comparing the sound field control code to the digital audio tape at the input time by comparing it with the time data, it is possible to perform accurate sound field control in synchronization with the audio signal, and at the same time record the sound field control code to the digital audio tape at the same time. Then, it is possible to perform sound field control without using a sound field control code input means or the like.

In this embodiment, 8-bit data is used as the sound field control code, but any number of bits of data may be used depending on the type of sound field control code. Further, in this embodiment, the sound field control code for one sound field variable device is written, but it is also possible to write a plurality of sound field control codes to control a plurality of devices.

Effects of the Invention As described above, the present invention allows the sound field control code recording means to input a sound field control code synchronized with the audio signal inputted by the sound field control code input means during audio signal recording or playback to the digital audio chip. By recording in the subcode area, it is possible to freely change the playback sound field in accordance with the audio signal.

[Brief explanation of the drawing]

FIG. 1 is a block diagram of the sound field control code input device in the first embodiment of the present invention, FIG. 2 is a sound field control code format diagram of the subcode area of Digital Audio Chive, and FIG. 3 is a block diagram of the sound field control code input device according to the first embodiment of the present invention. A block diagram of a sound field control code input device in the second embodiment, and FIG. 4 is a block diagram showing a conventional sound field control code input method. 3...Sound field control code input means, 4...
- Sound field control code recording means, 5... digital audio tape, 10... time data reading means, 11... control means. Name of agent: Patent attorney Shigetaka Awano Sub-IC

Claims (2)

[Claims] (1) A sound field control code input means for inputting a sound field control code, and a sound field control code recording means for recording the sound field control code in a sub-data area of a digital audio tape. Sound field control code input device. (2) A time code reading means for detecting the time code recorded on a digital audio tape and a control means for controlling the sound field control code recording means according to the time code are provided to record the sound field control code in synchronization with the time code. The sound field control code input device according to claim 1, characterized in that: