JPS62110693A - Digital audio file device - Google Patents

Abstract

PURPOSE:To file a sound signal without omitting a head by outputting a filing start control signal detecting the head of a program sound, delaying an A/D- converted program sound through a shift register, and outputting it to a buffer memory. CONSTITUTION:When the forefront of the program sound a sound detection circuit 3 supplies a filing start signal to a master control part 5. Meanwhile, the program sound through an A/D converter 9 is delayed at a shift register 12 and is stored at a buffer memory 14. Therefore, the delaying of a filing start against a program searching can be evaded, and the program sound can be filed without omitting the head.

Description

[Detailed Description of the Invention] [Field of Industrial Application] The present invention is equipped with a disk device having a large storage capacity, and digitizes program audio signals (CM audio, number audio, etc.) and files them in the disk device. Keep it
The present invention relates to a digital audio file device in which program audio is read out by specifying addresses of necessary program audio signals in broadcast order when reproducing program audio signals.

[Conventional technology]

Conventionally, this type of digital audio file device records a digitized signal of a program audio signal onto a disk.
In other words, when filing, at the same time as filing on the audio file side starts, a playback start control signal is sent to the device that plays the original audio material, or the original material is played back, the beginning of the playback is detected, and the detection signal is sent to the device that plays the original audio material. was used to control the start of filing.

[Problem that the invention seeks to solve]

The above-mentioned conventional digital audio file device has the disadvantage that in the case of a method in which a playback start control signal is sent to a device that plays back the original material, it is necessary to accurately locate the beginning of the original material. In the case of the method of detecting the beginning of the playback sound of the material, when the audio signal is detected and filing is started, there is a delay in detection because the audio signal has already been digitized, and as a result, the import of the original material is delayed. The disadvantage is that the beginning of the audio signal is missing.

[Means for solving problems]

The digital audio file device of the present invention includes an audio detection circuit that detects the beginning of a program audio signal of a source material and outputs a control signal to a control unit to start a filing operation for recording the program audio signal, and an analog/digital converter. a shift register that delays the program audio signal digitized by at least the time from when the audio detection circuit detects the beginning of the program audio signal until the controller starts filing control and outputs the delayed program audio signal to the buffer memory; It is characterized by having

Therefore, the audio signal of the original material can be filed without missing its head.

〔Example〕

Next, embodiments of the present invention will be described with reference to the drawings.

FIG. 1 is a block diagram of an embodiment of the digital audio file device of the present invention.

The audio detection circuit 3 detects the beginning of the program audio signal 2 input to the program audio signal input terminal 1 and outputs an audio detection control signal 4. Analog/digital converter 9
converts the program audio signal 2 into a digitized signal 10. The mask control section 5 starts the filing operation of the apparatus in response to the voice detection control signal 4 and outputs a buffer memory write command signal 6 and a disk control signal 8.

The disk control section 7 inputs a disk control signal 8 and outputs a buffer memory control signal 17 and a disk control signal 18. The shift register 12 receives a shift register control signal (write clock) 1 from the master control unit 5.
1, the digitized signal 10 is sequentially written and the number of stages is summed (at least the time from when the audio detection circuit 3 detects the beginning of the program audio signal 2 until the mask control unit 5 starts the filing operation) ) is output as the delayed digitized signal 13.

The delayed digitized signal 13 is written into the panzer memory 14 by the write command signal 6, read out by the buffer memory control signal 17, and transferred to the disk device 16 as a high-speed digital signal 15 using the disk clock.

〔Effect of the invention〕

As explained above, the present invention includes a shift register inserted for delay before the buffer memory after analog/digital conversion, and a system for detecting the audio signal before the analog/digital converter and using it as a filing start signal. By having the audio detection circuit, it is possible to provide a digital audio file device that can detect the audio signal of the original material and file it without missing the beginning of the audio.

[Brief explanation of drawings]

FIG. 1 is a block diagram of an embodiment of the digital audio file device of the present invention. l...Program audio input terminal, 2...Program audio signal, 3...Audio detection circuit, 4...Audio detection control signal, 5...Mask control section, 6...Buffer memory write command signal. 7... Disk control unit, 8... Disk control signal, 9... Analog/digital converter, 10... Digitization signal, 11... Shift register control signal, 12... Shift register, 13... Delayed digitized signal, 14... Buffer memory, 15... Digitized signal transferred at the speed of disk drive clock, 16... Disk device, 17... Buffer memory control signal, 18. ...Disk control signal.

Claims (1)

[Claims] A disk device with a large storage capacity is provided, a program audio signal is digitized and filed in the disk device, and the address of the program audio signal necessary for broadcasting is stored when the program audio signal is played back. In a digital audio file device that plays a specified program audio by reading it out, detects the beginning of the program audio signal of the source material and outputs a control signal to the control unit to start the filing operation of recording the program audio signal. audio detection circuit and analog/
The program audio signal digitized by the digital converter is output to the buffer memory after being delayed by at least the time from when the audio detection circuit detects the beginning of the program audio signal until the controller starts the filing operation. A digital audio file device characterized by being equipped with a shift register.