KR0182942B1 - Voice recording / reproducing equipment for conserving the initial sound - Google Patents

Abstract

1. TECHNICAL FIELD OF THE INVENTION

An audio recording / reproducing apparatus.

2. The technical problem to be solved by the invention

Provided is an audio recording / reproducing apparatus for supersonic protection, which attempts to protect an unrecorded ultra-low recording immediately after the silent by the silent detection function in the recording mode in the audio recording / reproducing apparatus.

3. Summary of the Solution of the Invention

In the silent recording / reproducing apparatus, an apparatus for recording an ultrasonic sound generated immediately after a silent sound is inputted by an input signal processor for level-controlling and outputting an input signal in a form suitable for storage, and by inputting an output signal of the input signal processor. A silent signal detecting unit for detecting silence, a digital signal processing unit for converting an output signal of the input signal processing unit into a recording mode in a recording mode and converting the output signal into a reproducing mode in a reproducing mode; A storage medium for recording the output of the digital signal processing unit, a key input unit, and the silent detection voice recording / reproducing apparatus on the basis of the key input unit, and in the recording mode, the silent control when silence is detected by the silent detection unit. A control unit for generating a signal and generating a sound control signal when a super sound is generated; Located between the call processing unit and the storage medium, based on the silent control signal of the control unit for temporarily storing the signal output from the digital signal processing unit, and outputs the supersonic signal temporarily stored by the sound control signal to the storage medium And a memory buffer unit, an output signal processor for inputting the signal of the storage medium by the digital signal processor in a reproducing mode and amplifying the signal to an appropriate size for output, and an output unit for outputting the output of the output signal processor.

4. Important uses of the invention

The voice reproducing / recording device having a silent detection function is implemented to eliminate the elimination of supersonic sound.

Description

Voice recording / playback device for supersonic protection

1 shows a first embodiment of a conventional audio recording / reproducing apparatus for supersonic protection.

2 shows a second embodiment of a conventional audio recording / reproducing apparatus for supersonic protection.

3 shows a voice recording / reproducing apparatus for the supersonic protection of the present invention.

* Explanation of symbols for main parts of the drawings

113: silent detector 116: storage medium

312: input signal processing unit 313: silent control unit

314: digital signal processing unit 317: memory buffer unit

320: control unit 321: output signal processing unit

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an audio recording / reproducing apparatus, and more particularly, to an apparatus for protecting an unrecorded initial sound immediately after detection of a silent mode in a recording mode in an audio recording / reproducing apparatus having a silent detection function.

One of the functions found today in non-portable voice recording / playback devices relates to the silent detection function. This is a device that stops the recording operation when no sound or sound above a certain level is heard, and resumes recording when the voice or sound is heard again. Therefore, the recording time is increased by reducing the consumption of the recording medium.

Silence detection methods generally used include detection methods through level checking of analog input signals, detection methods through energy tests of digital signals, and detection methods through zero crossing rates. Using the above method, the correct signal, noise, and slight sound are distinguished so that only the correct signal is recorded on the storage medium. This can prevent waste of storage media and prolong the recording time.

There are voice recording / reproducing apparatus for storing in an analog storage medium and a voice recording / reproducing apparatus for storing in a digital storage medium according to the storage medium. And each operation is slightly different. First, a voice recording / reproducing apparatus for an analog storage medium will be described.

A first embodiment of a voice recording / reproducing apparatus for supersonic protection according to a conventional analog storage medium employing a silent compression function is shown in FIG. Hereinafter, a description will be given with reference to FIG. 1.

The audio recording / reproducing apparatus includes a microphone 100, an input signal converter 111 for level control of a recording signal by the microphone 100 to a signal suitable for storage, and an output signal of the input signal converter 111 to detect silence. A detection unit 113, an error discriminator 114 for checking an error of a recording / reproducing signal output from the silent detection unit 113, a control unit 112 for overall control of the audio recording / reproducing apparatus, and a control by the control unit 112 A signal recording / reproducing unit 115 for recording / reproducing the recording / reproducing signal output from the detector 113 to the storage medium 116, a storage medium 116 for recording the output signal of the signal recording / reproducing unit 115, and the signal in the reproducing mode. An output signal converter 117 for amplifying a playback signal that is an output signal of the recording / reproducing section 115, and a playback signal output from the output signal converter 117; It consists of an output means for output speaker 118.

Hereinafter, a description will be given in detail with reference to the bulb of FIG. 1.

The silent detection function is a function used in the recording mode and looks at the operation of the audio recording / reproducing apparatus in the recording mode.

In the recording mode, the recording signal through the microphone 110 is applied to the input signal converter 111. The input signal converter 111 then converts the recording signal into a compressed or normalized signal. Then, the recording signal passes through the silent detector 113 and the error discriminator 114 that determine whether the recording signal is silent before recording the recording signal to the storage medium 116. In this case, when the recording signal is a sound signal by the silent detector 113, the controller 112 controls the signal recording / reproducing unit 115 to record the recording signal on the storage medium 116, and when the recording signal is determined to be silent, The control stops the operation of the signal recording / reproducing section 115 so as not to be stored in the storage medium 116.

A second embodiment of an audio recording / reproducing apparatus for supersonic protection according to a conventional digital storage medium employing a silent compression function is shown in FIG. Hereinafter, a description will be given with reference to FIG. 2.

The voice recording / reproducing apparatus includes a controller 112 for controlling the overall operation of the voice recording / reproducing apparatus, a microphone 100, a digital converter 220 for digitizing a recording signal by the microphone 100 under the control of the controller 112, and An input signal converter 111 for level-controlling the digital signal to a signal suitable for storage under the control of the controller 112, a silence detector 113 for inputting an output signal of the input signal converter 111 under the control of the controller 112 to detect silence; And an error discriminator 114 for checking an error of the recording / reproducing signal output from the silent detector 113 under control of the controller 112, and a recording / reproducing signal output from the silent detector 113 under the control of the controller 112. A signal recording / reproducing section 115 for recording / reproducing the data; and a storage medium 116 for recording an output signal of the signal recording / reproducing section 115; And an output signal converter 117 for amplifying the playback signal, which is an output signal of the signal recording / reproducing section 115, in the playback mode, and an analog converter for analogizing the playback signal output from the output signal converter 117. 222 and a speaker 118, which is an output means for outputting the analog signal.

Hereinafter, with reference to the configuration of FIG. 2 will be described in detail.

The silent detection function is a function used in the recording mode and looks at the operation of the audio recording / reproducing apparatus in the recording mode.

In the recording mode, the recording signal through the microphone 110 is converted into a digital signal by the digital converter 220 and applied to the input signal converter 111. The input signal converter 111 then converts the recording signal into a compressed or normalized signal. Then, the recording signal passes through the silent detector 113 and the error discriminator 114 that determine whether the recording signal is silent before recording the recording signal to the storage medium 116. In this case, when the recording signal is a sound signal by the silent detector 113, the control unit 112 controls the signal recording / reproducing unit 115 to record the recording signal on the storage medium 116, and when the recording signal is determined to be silent, The control stops the operation of the signal recording / reproducing section 115 so as not to be stored in the storage medium 116.

Accordingly, the prior art detects silence based on a signal generated at an input inspection portion. And it cannot wait enough to respond to the sound signal which may be input when it waits until a sound recording signal enters. That is, after the silence detection unit 113 determines that the sound is not silent, since the initial sound of the voice has already been pronounced, it cannot be recorded.

Accordingly, an object of the present invention is to provide an audio recording / reproducing apparatus for supersonic protection, which attempts to protect the unrecorded super sound immediately after the silent by the silent detection function in the recording mode in the audio recording / reproducing apparatus.

In order to achieve the above object of the present invention, in the apparatus for recording the super sound generated immediately after the silent when recording in the silent detection voice recording / reproducing apparatus, the input signal processing unit for level-controlling and outputting the input signal in a form suitable for storage; A silence detector detecting input of an output signal of the input signal processor, and converting the input signal processor into a form for recording and inputting an output signal of the input signal processor in a recording mode; A digital signal processing unit for inversely converting the digital signal processing unit, a storage medium for recording the output of the digital signal processing unit, a key input unit, and the key input unit, and controlling the silent detection audio recording / reproducing apparatus. When silence is detected by the silence detector, a silent control signal is generated and super sound is generated. Located between the control unit for generating a sound noise control signal, the digital signal processing unit and the storage medium, and temporarily stores the signal output from the digital signal processing unit based on the silent control signal of the control unit, the sound control signal A memory buffer for outputting the temporarily stored supersonic signal to the storage medium, an output signal processor for amplifying the signal of the storage medium by the digital signal processor in a reproducing mode, and amplifying the signal to an appropriate size for output; And an output unit for outputting an output of the signal processing unit.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. It should be noted that like elements in the figures represent like reference numerals wherever possible.

As used herein, the term "super sound" refers to a sound sound that is the first sound of a minute time that occurs immediately after a silence, which is a sound of a predetermined level or less.

An audio recording / ashing device for the ultrasonic signal of the present invention is shown in FIG. A description with reference to FIG. 3 is as follows.

The voice recording / playback apparatus controls the overall operation of the voice recording / playback apparatus based on a key input unit 319 to which various function keys are input by a user and the key input unit 319, and is controlled silent by the silent controller 313 described later. A control unit 320 for outputting a signal and a sound control signal, a microphone 110 for inputting a recording signal, an analog to digital (A / D) converter 311 for digitizing a recording signal through the microphone 110, and the A / D converter 311 An input signal processor 312 for processing a level control in a form suitable for recording under the control of the controller 320, and determining whether the recording signal output from the input signal processor 312 is controlled under the control of the controller 320; The silent detector 113 and the signal output from the silent detector 113 do not operate when the sound is silent. And a silent control unit 313 for controlling the memory buffer unit 317, which will be described later, and compressing the recording signal in the recording mode, and in the reproducing mode, a signal compression / extension processing unit 315 for expanding the reproduction signal and checking for errors. A digital signal processing unit 314 which includes an error checking unit 316 and converts the recording / reproducing signal inputted under the control into a form for recording / reproducing; and the output of the digital signal processing unit 314 under the control of the control unit 320. A recording / reproducing apparatus section 318 for driving a system for reproducing, a memory buffer section 318 for temporarily storing a signal input at the time of occurrence of silence under the control of the control section 320 and the silent control section 313, the memory buffer section 317 and the recording / A recording / reproducing apparatus for storing the recording signal output from the reproducing apparatus unit 318 and the recording signal stored in the storage medium 116 in the reproducing mode. An output signal processor 321 for amplifying the reproduced signal reproduced by the unit 318 into a signal suitable for inputting and outputting a signal converted from the digital signal processor 314, and converting the reproduced signal of the output signal processor 321 into an analog signal; And a digital-to-analog (D / A) converting unit 322 and a speaker and a headphone, and an output unit 118 for outputting an analog signal of the D / A converting unit 322.

Hereinafter, a description will be given with reference to the configuration of FIG.

In the present invention, since the first audio is recorded in the recording mode, only the recording mode is described. First, in the recording mode, when the recording mode is input by the key input unit 319, the recording signal is the microphone 110, the A / D conversion unit. 311, the input signal processor 312, the digital signal processor 316, and the recording / reproducing device unit 318 are recorded on the storage medium 116. This results in the sound being detected by the silent detector 113, and thus the silent controller 27 does not operate. Therefore, the memory buffer unit 317 cannot input the signal from the digital signal processor 314.

However, when it is detected by the silent detector 113 that the recording signal is silent, the silent controller 313 generates a silent code and outputs the silent code to the controller 320. Then, the controller 320 outputs the silent control signal to the memory buffer unit 317 and the digital signal processor 314. Accordingly, the digital signal processor 314 transmits the digital signal processed write signal to the memory buffer unit 317 to the memory buffer unit 317, which is an intermediate buffer, to perform the supersonic protection function. Thus, the memory buffer unit 317 temporarily stores the silent recording signal. At this time, the silent recording signal is not written to the storage medium 116 but is in a standby state. Thereafter, when the first sound that is the start sound of the sound is applied to the silent detector 113, the silent controller 313 transmits a signal to the controller 320 and the silent controller 313. The control unit 320 immediately sends the sound control signal to the memory buffer unit 317 to record the supersonic signal stored in the memory buffer unit 317 to the storage medium 116, during which the digital signal processor 314 compresses the new sound recording signal. Thus, the storage medium 116 reads the first recording signal temporarily stored in the memory buffer unit 317, and then records the recording signal input through the recording / reproducing apparatus unit 318 which is subsequently recorded.

As described above, the present invention allows the silent recording signal to be randomly stored in the memory buffer unit 317 in the recording mode. This allows the user to hear natural sound that is not damaged after recording when the first sound is silent.

Claims (6)

An apparatus for recording a super sound generated immediately after a silent sound during recording by a silent recording / reproducing apparatus, comprising: input signal processing means for level-controlling and outputting an input signal in a form suitable for storage, and an output of the input signal processing means Silent detecting means for inputting a signal to detect silence or not, and converting the output signal of the input signal processing means into a recording mode for recording in the recording mode, and inverting the output signal for playback in the playback mode. Controlling the silent detection audio recording / reproducing apparatus on the basis of digital signal processing means, storage means for recording the output of the digital signal processing means, key input means, and the key input means, When silence is detected by the detection means, a silent control signal is generated, and when a super sound is generated, a silent control signal is generated. And a control means which is located between the digital signal processing means and the storage means and temporarily stores a signal output from the digital signal processing means on the basis of the silent control signal of the control means. A memory buffer means for outputting the stored supersonic signal to the storage medium, an output signal processing means for inputting the signal of the storage medium by the digital signal processing means in a reproducing mode, and amplifying the signal to an appropriate size for output; An audio recording / reproducing apparatus for supersonic protection, comprising: output means for outputting an output of the signal processing means. 2. The apparatus of claim 1, wherein an analog / digital converting means for converting an analog signal of the input signal into a digital signal is further located in front of the input signal processing means. 2. The audio recording / reproducing apparatus according to claim 1, further comprising digital / analog converting means for converting a digital signal into an analog signal between said output signal processing means and said output means. The digital signal processing means according to claim 1, wherein the digital signal processing means compresses the input signal in the recording mode, and signal compression / extension processing means for extending the input signal in the reproduction mode, and is the recording / reproducing operation correctly performed? Voice recording / reproducing apparatus for the supersonic protection, characterized in that it further comprises an error checking means for examining. In a device for recording a supersonic sound generated immediately after a silence during recording in a silent recording / reproducing apparatus, an analog / digital converting means for digitizing an input signal and an output of the analog / digital converting means in a form suitable for recording. Input signal processing means for level control and outputting, signal compression / extension processing means and error checking means are provided so that the output signal of the input signal processing means is converted into a form for recording by inputting the signal in the recording mode, Digital signal processing means for compressing and outputting, inverting to a form for reproducing in a reproducing mode, extending and outputting a signal, and checking an error of an operation of the reproducing / recording mode, and recording the output of the digital signal processing means. Recording / reproducing apparatus means for driving / reproducing, and a storage medium for recording the output of the recording / reproducing apparatus means. And silent control means for inputting a key input means, an output signal of the input signal processing means to detect whether the sound is silent, and a silent control for generating a silent code when it is determined to be silent by inputting the output of the silent detection means. Means for controlling the silent detection voice recording / reproducing apparatus based on the key input means, generating a silent control signal when the silent code is input in the recording mode, and generating a silent control signal when an initial sound is generated. Located between the control means and the digital signal processing means and the storage medium, based on the silent control signal of the control means for temporarily storing the signal output from the digital signal processing means, and temporarily stored by the sound control signal A memory buffer means for outputting an ultrasonic signal to the storage medium, and a signal of the storage medium in the reproducing mode to the digital signal processing means. An output signal processing means for inputting and amplifying to an appropriate size for output, a digital / analog conversion means for analogizing and outputting the output of the output signal processing means, and an output means for outputting the digital signal. Audio recording / playback device for supersonic protection. 6. The method of claim 5, wherein the control means controls the digital signal processing means to delay the output of the input signal while outputting the temporarily stored signal from the memory buffer means to the storage medium when the sound control signal is generated. Audio recording / playback device for supersonic protection.