JPH07115700A - Audio signal processor - Google Patents

Audio signal processor

Info

Publication number
JPH07115700A
JPH07115700A JP5262413A JP26241393A JPH07115700A JP H07115700 A JPH07115700 A JP H07115700A JP 5262413 A JP5262413 A JP 5262413A JP 26241393 A JP26241393 A JP 26241393A JP H07115700 A JPH07115700 A JP H07115700A
Authority
JP
Japan
Prior art keywords
mode
input
stereo
audio signal
monaural
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
JP5262413A
Other languages
Japanese (ja)
Inventor
Yoshikazu Ishikawa
義和 石川
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Canon Inc
Original Assignee
Canon Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Canon Inc filed Critical Canon Inc
Priority to JP5262413A priority Critical patent/JPH07115700A/en
Publication of JPH07115700A publication Critical patent/JPH07115700A/en
Withdrawn legal-status Critical Current

Links

Landscapes

  • Stereophonic System (AREA)
  • Circuit For Audible Band Transducer (AREA)
  • Television Signal Processing For Recording (AREA)
  • Television Systems (AREA)
  • Signal Processing Not Specific To The Method Of Recording And Reproducing (AREA)

Abstract

PURPOSE:To eliminate the stereo processing of a monophonic input and the stereo output of a monophonic signal. CONSTITUTION:When a camera mode is set by a switch 10, a control circuit 26 ignores the detection result of a detecting circuit 24 and sets a stereo mode in a voice signal processing circuit 16. When a line input mode is set by the switch 10, the control circuit 26 sets the stereo mode in the voice signal processing circuit 16 at the time of the stereo input and sets the monophonic mode in the voice signal processing circuit 16 at the time of monophonic input in accordance with the detection result of the detecting circuit 24. The control circuit 26 is operated in the same way as the line input mode at the time of a reproduction mode.

Description

【発明の詳細な説明】Detailed Description of the Invention

【0001】[0001]

【産業上の利用分野】本発明は、音声信号処理装置に関
し、より具体的には、ステレオ音声信号とモノラル音声
信号を扱う音声信号処理装置に関する。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an audio signal processing device, and more particularly to an audio signal processing device that handles stereo audio signals and monaural audio signals.

【0002】[0002]

【従来の技術】映像信号及び音声信号を記録する映像記
録再生装置では、音声信号をステレオ又はモノラルで記
録再生できるのが普通である。即ち、ステレオ用の2つ
の音声入力端子を具備し、ステレオ信号の加減算出力
を、映像信号の周波数変調搬送波より低い2つの搬送波
で変調して、記録媒体に記録する。モノラルの場合、一
方の音声入力端子にのみ音声信号を入力する。
2. Description of the Related Art In a video recording / reproducing apparatus for recording a video signal and an audio signal, it is usual to record and reproduce the audio signal in stereo or monaural. That is, it is provided with two audio input terminals for stereo, and the addition / subtraction output of the stereo signal is modulated with two carriers lower than the frequency-modulated carrier of the video signal and recorded on the recording medium. In the case of monaural, the audio signal is input to only one audio input terminal.

【0003】[0003]

【発明が解決しようとする課題】カメラ一体型記録再生
装置では、従来、動作モード、即ち、カメラ/ライン/
再生の各モードに対応してステレオ/モノラルを切り換
えるようにはなっていない。その結果、ライン入力モー
ドでの記録再生時にステレオ・モード固定として、一方
の音声入力端子にのみ入力信号がある場合、他方は無信
号状態のままステレロ記録されることになり、再生時に
は、入力信号のあった入力端子に対応する出力端子には
出力信号があるが、入力信号の無い入力端子に対応する
出力端子は無信号状態になる。
In the camera-integrated recording / reproducing apparatus, the operation mode, that is, camera / line /
It is not designed to switch between stereo and monaural according to each playback mode. As a result, when recording / reproducing in line input mode, the stereo mode is fixed, and if there is an input signal only on one audio input terminal, the other will be recorded as a stereo signal with no signal. There is an output signal at the output terminal corresponding to the input terminal having the input signal, but the output terminal corresponding to the input terminal having no input signal becomes the non-signal state.

【0004】また、再生モード時にステレオ・モード固
定では、モノラル記録された音声を再生する場合に、一
方の音声出力端子には出力信号があるが、他方の音声出
力端子は無信号状態になる。
When the stereo mode is fixed in the reproduction mode, when reproducing a monaurally recorded sound, one audio output terminal has an output signal, but the other audio output terminal is in a non-signal state.

【0005】本発明は、このような問題点を解決する音
声信号処理装置を提示することを目的とする。
An object of the present invention is to provide an audio signal processing device which solves such a problem.

【0006】[0006]

【課題を解決するための手段】本発明に係る音声信号処
理装置は、音声信号の入力モードを設定するモード設定
手段と、ステレオ入出力及びモノラル入出力を検出する
検出手段と、当該モード設定手段の設定モード及び当該
検出手段の検出結果に従い、ステレオ音声処理かモノラ
ル音声処理かを制御する制御手段とを設けたことを特徴
とする。
An audio signal processing apparatus according to the present invention comprises a mode setting means for setting an input mode of an audio signal, a detecting means for detecting stereo input / output and a monaural input / output, and the mode setting means. And a control means for controlling stereo audio processing or monaural audio processing according to the setting mode and the detection result of the detection means.

【0007】[0007]

【作用】上記手段により、モノラル入力をステレオ処理
したり、モノラル信号をステレオ出力したりすることが
無くなる。
With the above means, it is possible to eliminate stereo processing of a monaural input and stereo output of a monaural signal.

【0008】[0008]

【実施例】以下、図面を参照して本発明の実施例を説明
する。
Embodiments of the present invention will be described below with reference to the drawings.

【0009】図1は、本発明の一実施例の主要部の概略
構成ブロック図を示す。図1において、10はカメラ/
ライン/再生の各モードを設定するスイッチ、12は、
ステレオ音声信号のRチャンネルの入出力端子、14は
ステレオ音声信号のLチャンネル又はモノラル音声信号
の入出力端子、16は音声信号を記録再生処理する音声
信号処理回路、18はヘッド・アンプ、20は磁気ヘッ
ド、22は磁気テープ、24は、R入出力端子12に一
体化され、プラグの抜き差しによりステレオ入出力かモ
ノラル入出力かを検出する検出回路、26は検出回路2
4の検出結果及びスイッチ10の設定モードに応じて音
声信号処理回路16を制御する制御回路である。
FIG. 1 shows a schematic block diagram of the essential parts of an embodiment of the present invention. In FIG. 1, 10 is a camera /
A switch for setting each mode of line / playback, 12 is
Stereo channel R channel input / output terminal, 14 stereo channel L channel or monaural audio signal input / output terminal, 16 audio signal processing circuit for recording / reproducing audio signal, 18 head amplifier, 20 A magnetic head, 22 is a magnetic tape, 24 is a detection circuit that is integrated with the R input / output terminal 12, and detects stereo input / output or monaural input / output by inserting / removing a plug, and 26 is a detection circuit 2.
4 is a control circuit for controlling the audio signal processing circuit 16 according to the detection result of No. 4 and the setting mode of the switch 10.

【0010】検出回路24は、Rチャンネル入出力端子
10に対するプラグの抜き差しにより、モノラル入力か
ステレオ入力かを検出する。勿論、信号レベルを検出
し、一定レベル以上の信号の有無によりステレオかモノ
ラルかを判別してもよい。
The detection circuit 24 detects whether it is a monaural input or a stereo input by inserting / removing a plug to / from the R channel input / output terminal 10. Of course, it is also possible to detect the signal level and determine whether it is stereo or monaural by the presence or absence of a signal of a certain level or higher.

【0011】図1の動作を説明する。スイッチ10によ
りカメラ・モードが設定されているとき、制御回路26
は検出回路24の検出結果を無視し、音声信号処理回路
16にステレオ・モードを設定する。
The operation of FIG. 1 will be described. When the camera mode is set by the switch 10, the control circuit 26
Ignores the detection result of the detection circuit 24 and sets the audio signal processing circuit 16 to the stereo mode.

【0012】スイッチ10によりライン入力モードが設
定されているとき、制御回路26は検出回路24の検出
結果に応じて、ステレオ入力の時には音声信号処理回路
16にステレオ・モードを設定し、モノラル入力の時に
は音声信号処理回路16にモノラル・モードを設定す
る。再生モードのときも、制御回路26は、ライン入力
モードと同様に動作する。
When the line input mode is set by the switch 10, the control circuit 26 sets the stereo mode in the audio signal processing circuit 16 in the stereo input in accordance with the detection result of the detection circuit 24, and the monaural input is set. Sometimes the audio signal processing circuit 16 is set to the monaural mode. Also in the reproduction mode, the control circuit 26 operates similarly to the line input mode.

【0013】[0013]

【発明の効果】以上の説明から容易に理解できるよう
に、本発明によれば、動作モードと入出力端子の使用状
態により音声処理をステレオ・モード又はモノラル・モ
ードに切り換えるようにしたので、モノラル入力をステ
レオ処理したり、モノラル信号をステレオ出力したりす
ることが無くなる。
As can be easily understood from the above description, according to the present invention, the audio processing is switched to the stereo mode or the monaural mode depending on the operation mode and the use state of the input / output terminals. There is no need to process the input in stereo or output a monaural signal in stereo.

【図面の簡単な説明】[Brief description of drawings]

【図1】 本発明の一実施例の概略構成ブロック図であ
る。
FIG. 1 is a schematic block diagram of an embodiment of the present invention.

【符号の説明】[Explanation of symbols]

10:モード設定スイッチ 12:Rチャンネル入出力
端子 14:Lチャンネル入出力端子 16:音声信号
処理回路 18:ヘッド・アンプ 20:磁気ヘッド
22:磁気テープ 24:検出回路 26:制御回路
10: Mode setting switch 12: R channel input / output terminal 14: L channel input / output terminal 16: Audio signal processing circuit 18: Head amplifier 20: Magnetic head
22: Magnetic tape 24: Detection circuit 26: Control circuit

───────────────────────────────────────────────────── フロントページの続き (51)Int.Cl.6 識別記号 庁内整理番号 FI 技術表示箇所 H04N 7/08 7/081 H04R 3/00 310 H04S 5/00 8421−5H ─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. 6 Identification code Office reference number FI technical display location H04N 7/08 7/081 H04R 3/00 310 H04S 5/00 8421-5H

Claims (1)

【特許請求の範囲】[Claims] 【請求項1】 音声信号の入力モードを設定するモード
設定手段と、ステレオ入出力及びモノラル入出力を検出
する検出手段と、当該モード設定手段の設定モード及び
当該検出手段の検出結果に従い、ステレオ音声処理かモ
ノラル音声処理かを制御する制御手段とを設けたことを
特徴とする音声信号処理装置。
1. A stereo sound according to a mode setting means for setting an input mode of an audio signal, a detecting means for detecting stereo input / output and a monaural input / output, and a setting mode of the mode setting means and a detection result of the detecting means. An audio signal processing device, comprising: a control means for controlling processing or monaural audio processing.
JP5262413A 1993-10-20 1993-10-20 Audio signal processor Withdrawn JPH07115700A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP5262413A JPH07115700A (en) 1993-10-20 1993-10-20 Audio signal processor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5262413A JPH07115700A (en) 1993-10-20 1993-10-20 Audio signal processor

Publications (1)

Publication Number Publication Date
JPH07115700A true JPH07115700A (en) 1995-05-02

Family

ID=17375444

Family Applications (1)

Application Number Title Priority Date Filing Date
JP5262413A Withdrawn JPH07115700A (en) 1993-10-20 1993-10-20 Audio signal processor

Country Status (1)

Country Link
JP (1) JPH07115700A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008022127A (en) * 2006-07-11 2008-01-31 Sharp Corp Surround device
JP2010141433A (en) * 2008-12-09 2010-06-24 Toshiba Corp Acoustic apparatus and method of controlling the same
WO2016131373A1 (en) * 2015-08-06 2016-08-25 中兴通讯股份有限公司 Method and terminal for controlling high-fidelity function

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008022127A (en) * 2006-07-11 2008-01-31 Sharp Corp Surround device
JP2010141433A (en) * 2008-12-09 2010-06-24 Toshiba Corp Acoustic apparatus and method of controlling the same
US7957549B2 (en) 2008-12-09 2011-06-07 Kabushiki Kaisha Toshiba Acoustic apparatus and method of controlling an acoustic apparatus
WO2016131373A1 (en) * 2015-08-06 2016-08-25 中兴通讯股份有限公司 Method and terminal for controlling high-fidelity function

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Legal Events

Date Code Title Description
A300 Withdrawal of application because of no request for examination

Free format text: JAPANESE INTERMEDIATE CODE: A300

Effective date: 20001226