JPH04109800A - Audio signal reproducing device - Google Patents
Audio signal reproducing deviceInfo
- Publication number
- JPH04109800A JPH04109800A JP2227566A JP22756690A JPH04109800A JP H04109800 A JPH04109800 A JP H04109800A JP 2227566 A JP2227566 A JP 2227566A JP 22756690 A JP22756690 A JP 22756690A JP H04109800 A JPH04109800 A JP H04109800A
- Authority
- JP
- Japan
- Prior art keywords
- signal
- audio
- playing
- audio signal
- stereo
- 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.)
- Granted
Links
- 230000005236 sound signal Effects 0.000 title claims abstract description 35
- 230000005540 biological transmission Effects 0.000 claims abstract description 19
- 230000001755 vocal effect Effects 0.000 abstract description 13
- 238000000926 separation method Methods 0.000 abstract description 5
- 230000006866 deterioration Effects 0.000 abstract description 4
- 238000005562 fading Methods 0.000 abstract 1
- 230000003287 optical effect Effects 0.000 description 8
- 238000010586 diagram Methods 0.000 description 4
- 230000003111 delayed effect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 1
- 238000001228 spectrum Methods 0.000 description 1
Landscapes
- Stereophonic System (AREA)
- Reverberation, Karaoke And Other Acoustics (AREA)
- Signal Processing Not Specific To The Method Of Recording And Reproducing (AREA)
Abstract
Description
【発明の詳細な説明】
[産業上の利用分野]
この発明は、いわゆる「カラオケ」用に好適な音声信号
再生装置に関する。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an audio signal reproducing device suitable for so-called "karaoke".
[発明の概要コ
この発明は、いわいる「カラオケ」用の「音声多重デジ
タルディスク」に対応して、デジタルステレオ演奏信号
を伝送する1対の伝送路と、アナログモノラル演奏信号
をそれぞれ伝送する第3及び第4の伝送路とを備え、こ
の第3及び第4の伝送路の一方によりボーカル信号を伝
送するようにした音声信号再生装置において、第3及び
第4の伝送路により伝送される音声信号の差信号を形成
する差信号形成手段を設けて、アナログモノラル演奏信
号を相殺し、ボーカル信号のみをデジタルステレオ演奏
信号に重畳することにより、デジタル及びアナログの両
演奏信号間の干渉を防止して、再生音声の品位を向上さ
せるようにしたものである。[Summary of the Invention] This invention provides a pair of transmission lines for transmitting a digital stereo performance signal and a pair of transmission lines for transmitting an analog monaural performance signal, respectively, in correspondence with the so-called "audio multiplex digital disc" for "karaoke". 3 and a fourth transmission path, the audio signal reproducing device is configured to transmit a vocal signal through one of the third and fourth transmission paths. Interference between both the digital and analog performance signals is prevented by providing a difference signal forming means for forming a signal difference signal, canceling out the analog monaural performance signal and superimposing only the vocal signal on the digital stereo performance signal. In this way, the quality of the reproduced audio is improved.
[従来の技術]
従来、磁気テープや光ディスク等の媒体に記録された歌
唱伴奏用の演奏の音声信号を再生する、いわゆる「カラ
オケ」装置が広く用いられている。[Prior Art] Conventionally, so-called "karaoke" devices have been widely used that reproduce audio signals of singing accompaniment performances recorded on media such as magnetic tapes and optical disks.
ロカラオケ」用の光ディスクには、第2図に示すように
、FM形式の映像信号VFMが高域に配置され、その下
側にFM形式のアナログ音声信号AFMが配置されると
共に、コンパクトディスクと同様形式のデジタル音声信
号PCMが低域に配置されたものがある。As shown in Figure 2, an optical disc for "local karaoke" has an FM format video signal VFM placed in the high frequency range, an FM format analog audio signal AFM placed below it, and a compact disc. There is also one in which a digital audio signal PCM of a similar format is placed in the low frequency range.
この種の光ディスクでは、アナログ及びデンタルの両音
声信号に対し、それぞれ2つのチャンネルが用意されて
おり、デジタル音声信号PCMの2チャンネルLD、R
D には演奏のみがステレオ形式で録音される。一方、
アナログ音声信号A F !、lの2チャンネルLA、
RA には、テ′ジタルの2チ丁ンネルLD、RD
と同じ演奏がモノラル形式(和信号形式)でそれぞれ録
音されると共に、演奏に重畳して、歌手による歌唱(ボ
ーカル)が右チャンネルRA に録音される。This type of optical disc has two channels each for both analog and dental audio signals, and two channels for digital audio signal PCM, LD and R.
D only the performance is recorded in stereo format. on the other hand,
Analog audio signal AF! , l's 2-channel LA,
For RA, digital 2-channel LD, RD
The same performance is recorded in monaural format (sum signal format), and the singer's singing (vocal) is recorded on the right channel RA superimposed on the performance.
上述のような光ディスクは、「音声多重デジタルディス
ク」と通称され、高音質の演奏が再生されると共に、こ
の演奏に重畳してボーカルを再生することができ、この
ボーカルに倣って、使用者が歌唱練習をすることができ
る。The above-mentioned optical disc is commonly referred to as an "audio multiplex digital disc", and it can reproduce high-quality performances and also reproduce vocals superimposed on the performances. You can practice singing.
[発明が解決しようとする課題]
ところで、「音声多重デジタルディスク」対応の従来の
再生装置では、第3図に示すように、デジタルの2チャ
ンネルLD、 RD の演奏信号5BLSIRが、加算
器(11)、 (12> 及び増幅器(13)、 (
14)をそれぞれ介して、スピーカ(15)、 (16
) に供給されると共に、アナログの右チャンネルR
A のボーカル信号SV及びモノラル演奏信号SB!、
1が、可変抵抗器(17)を介して、加算器(11)、
(12) に共通に供給される。[Problems to be Solved by the Invention] By the way, in a conventional playback device compatible with an "audio multiplexed digital disc", as shown in FIG. ), (12> and amplifier (13), (
speakers (15) and (16) via speakers (14), respectively.
) and the analog right channel R
A's vocal signal SV and monaural performance signal SB! ,
1 is connected to the adder (11) via the variable resistor (17),
(12) Commonly supplied to.
ところが、アナログチャンネルRA の演奏信号SBM
がモノラルであるため、これの重畳により、デジタルチ
ャンネルLD、RD のステレオ演奏信号SBL、 S
BRの分離度が劣化するという問題があった。However, the performance signal SBM of analog channel RA
Since these are monaural, by superimposing them, the stereo performance signals SBL, S of the digital channels LD, RD are created.
There was a problem that the degree of separation of BR deteriorated.
また、再生装置のデジタル信号処理回路(図示を省略)
における所定の処理に、例えば数十mSの時間を要し、
デジタルチャンネルLD、RDの演奏信号SBL、 S
BRは、無遅延のアナログチャンネルRA のモノラル
演奏信号SBM(−3BL本+S BR* )に対して
、処理時間分だけ遅れている。In addition, the digital signal processing circuit of the playback device (not shown)
For example, it takes several tens of milliseconds for the predetermined processing,
Digital channel LD, RD performance signals SBL, S
BR is delayed by the processing time with respect to the monaural performance signal SBM (-3BL + SBR*) of the non-delayed analog channel RA.
なお、この和信号の各成分の′”*°′は、デジタルチ
ャンネルLD、RD の対応演奏信号SBL、 SBR
より、114 M軸上でそれぞれ進んでいることを示す
。Note that '*°' of each component of this sum signal is the corresponding performance signal SBL, SBR of digital channels LD, RD.
114. This shows that they are advancing on the 114 M axis.
このため、デジタルチャンネルLD、RD の演奏信号
SBL、 SBRと、アナログチャンネルRA の演奏
信号SBI、lとを重畳するときは、両演奏信号が干渉
して、フェージング様の現象が発生し、再生音声の品位
が劣化するという問題があった。Therefore, when the performance signals SBL, SBR of the digital channels LD, RD and the performance signals SBI, l of the analog channel RA are superimposed, the two performance signals interfere and a fading-like phenomenon occurs, causing the reproduced audio to become There was a problem that the quality of the product deteriorated.
なお、アナログチャンネルR^のボーカル信号Sv も
、演奏信号SBMと同様に、デジタルチャンネルLD、
RDの演奏信号SBL、 SBRより時間軸上で進んで
いるが、ボーカル信号と演奏信号との時間のずれは、再
生音声の品位上、殆ど問題にはならない。Note that the vocal signal Sv of the analog channel R^ is also transmitted to the digital channel LD, similar to the performance signal SBM.
Although the RD performance signals SBL and SBR are ahead of each other on the time axis, the time difference between the vocal signal and the performance signal hardly poses a problem in terms of the quality of the reproduced audio.
かかる点に鑑み、この発明の目的は、「音声多重デジタ
ルディスク」の再生時に、ステレオ分離度の劣化や、フ
ェージング様の現象の発生を防止して、再生音声の品位
を向上させることができる音声信号再生装置を提供する
ところにある。In view of this, an object of the present invention is to provide an audio system that can improve the quality of reproduced audio by preventing deterioration of stereo separation and occurrence of fading-like phenomena when reproducing an "audio multiplexed digital disc." The present invention provides a signal reproducing device.
[課題を解決するための手段]
この発明は、ステレオ音声信号SBL、 SBRを伝送
する1対の伝送路LD、RD と、ステレオ音声信号の
和信号SBMをそれぞれ伝送する第3及び第4の伝送路
LA、 RA とを備え、この第3及び第4の伝送路の
一方により第3の音声信号Sv を伝送するようにした
音声信号再生装置において、第3及び第4の伝送路によ
り伝送される音声信号の差信号を形成する差信号形成手
段(21)を設け、差信号Svを1対の伝送路にそれぞ
れ供給するようにした音声信号再生装置である。[Means for Solving the Problems] The present invention provides a pair of transmission lines LD and RD for transmitting stereo audio signals SBL and SBR, and a third and fourth transmission line for respectively transmitting a sum signal SBM of the stereo audio signals. In the audio signal reproducing device, the audio signal reproducing device is equipped with channels LA and RA, and is configured to transmit a third audio signal Sv through one of the third and fourth transmission paths. This audio signal reproducing device is provided with a difference signal forming means (21) for forming a difference signal of audio signals, and supplies the difference signal Sv to a pair of transmission paths, respectively.
「作用]
かかる構成によれば、和信号SBI、lが相殺され、第
3の音声信号Sv だけが1対の伝送路LD、RDにそ
れぞれ重畳されて、ステレオ分離度の劣化や、フェージ
ング様の現象の発生が防止され、再生音声の品位が向上
する。[Operation] According to this configuration, the sum signal SBI,l is canceled out, and only the third audio signal Sv is superimposed on the pair of transmission paths LD and RD, respectively, resulting in deterioration of stereo separation and fading-like phenomena. This prevents the phenomenon from occurring and improves the quality of reproduced audio.
「実施例コ
以下、第1図を参照しながら、この発明による音声信号
再生装置の一実施例について説明する。Embodiment Hereinafter, an embodiment of the audio signal reproducing apparatus according to the present invention will be described with reference to FIG.
この発明の一実施例の構成を第1図j=示す。この第1
図において、前出第3図に対応する部分には同一の符号
を付して重複説明を省略する。The structure of an embodiment of the present invention is shown in FIG. This first
In the figure, parts corresponding to those in FIG. 3 mentioned above are given the same reference numerals, and redundant explanation will be omitted.
第1図において、(1)は光学ピックアンプであって、
「音声多重デジタル方式」の光ディスクDの記録面を走
査し、光学ピックアップ(1)の再生出力が、高域フィ
ルタ(2)、2つの帯域フィルタ(3)、 (4)及び
低域フィルタ(5)に共通に供給されて、前出第2図に
示すような、FM映像信号VFM。In FIG. 1, (1) is an optical pick amplifier,
The recording surface of the optical disc D of the "audio multiplex digital system" is scanned, and the playback output of the optical pickup (1) is transmitted to the high-pass filter (2), two band-pass filters (3), (4), and the low-pass filter (5). ) is commonly supplied to the FM video signal VFM as shown in FIG. 2 above.
FM音声信号AFM及びデジタル音声信号PCMがそれ
ぞれ分離される。An FM audio signal AFM and a digital audio signal PCM are separated.
高域フィルタ(2)からのFM映像信号VFMは復調器
(6)に供給され、復調された映像信号が受像機(7)
に供給される。The FM video signal VFM from the high-pass filter (2) is supplied to the demodulator (6), and the demodulated video signal is sent to the receiver (7).
is supplied to
帯域フィルタ(3)、 (4) からのFM音声信号A
FMは復調器(8)、 (9) にそれぞれ供給され
る。FM audio signal A from bandpass filters (3) and (4)
The FM is supplied to demodulators (8) and (9), respectively.
(10)はPCM復調・信号処理回路であって、低域フ
ィルタ(5)からのデジタル音声信号PCMが供給され
、前述のように、例えば数十mSの時間を要する所定の
信号処理がなされて、その端子LD。(10) is a PCM demodulation/signal processing circuit, which is supplied with the digital audio signal PCM from the low-pass filter (5), and, as mentioned above, performs predetermined signal processing that takes several tens of milliseconds, for example. , its terminal LD.
RDから出力されたステレオ演奏信号SBL、 SBR
が、加算器(11)、 <12) にそれぞれ供給さ
れる。Stereo performance signals SBL, SBR output from RD
are supplied to adders (11) and <12), respectively.
(21)は差動増幅器であって、一方の復調器(8)の
復調出力、即ち左アナログチャンネルのモノラル演奏信
号SBM (= SBL*↓SBR本)が、端子LAを
介して、反転入力端子に供給されると共に、他方の復調
器(9)の復調出力、即ち右アナログチャンネルのモノ
ラル演奏信号SB+、l及びボーカル信号Svが、端子
RAを介して、非反転入力端子に供給される。差動増幅
器(21)の出力は、可変抵抗器(17)を介して、加
算器(11)、 (12) にそれぞれ供給される。(21) is a differential amplifier, in which the demodulated output of one demodulator (8), that is, the monaural performance signal SBM (=SBL*↓SBR) of the left analog channel, is sent to the inverting input terminal via the terminal LA. At the same time, the demodulated output of the other demodulator (9), that is, the monaural performance signals SB+, 1 of the right analog channel and the vocal signal Sv are supplied to the non-inverting input terminal via the terminal RA. The output of the differential amplifier (21) is supplied to adders (11) and (12) via variable resistors (17), respectively.
なお、システム制御回路(図示せず)に制御されて、「
音声多重デジタルディスク」の再生時にのみ、差動増幅
器(21)の出力経路が形成される。Furthermore, under the control of the system control circuit (not shown),
The output path of the differential amplifier (21) is formed only when reproducing an audio multiplexed digital disc.
その余の構成は前出第3図と同様である。The rest of the configuration is the same as that shown in FIG. 3 above.
次に、この発明の一実施例の動作について説明する。Next, the operation of one embodiment of the present invention will be explained.
差動増幅器(21)においては、左アナログチャンネル
の信号SBMと、右アナログチャンネルの信号(SBM
+SV)とのうち、双方の演奏信号88Mが相殺されて
、ボーカル信号Sv のみが残存する差信号が形成され
、可変抵抗器(17)を介して、この差信号が、加算器
(11)、 (12) にそれぞれ供給される。In the differential amplifier (21), the left analog channel signal SBM and the right analog channel signal (SBM
+SV), both performance signals 88M are canceled out to form a difference signal in which only the vocal signal Sv remains, and this difference signal is passed through the variable resistor (17) to the adder (11), (12) respectively.
この実施例では、前述のような問題の原因となったモノ
ラルの演奏信号SBM=SBL本÷SBR*が差動増幅
器(21)で相殺されて、ステレオの演奏信号SBL、
SBRに重畳されることがないので、両演奏信号の干
渉による、ステレオ分離度の劣化や、フェージング様の
現象の発生が防止されて、再生音声の品位が向上する。In this embodiment, the monaural performance signal SBM=SBL/SBR*, which caused the above-mentioned problem, is canceled out by the differential amplifier (21), and the stereo performance signal SBL,
Since the signal is not superimposed on the SBR, deterioration of the degree of stereo separation and occurrence of fading-like phenomena due to interference between the two performance signals are prevented, and the quality of the reproduced sound is improved.
[発明の効果]
以上詳述のように、この発明によれば、デジタルステレ
オ演奏信号を伝送する1対の伝送路と、アナログモノラ
ル演奏信号をそれぞれ伝送する第3及び第4の伝送路と
を備え、この第3及び第4の伝送路の一方によりボーカ
ル信号を伝送するようにした、いわゆる「カラオケ」用
の音声信号再生装置において、第3及び第4の伝送路に
より伝送される音声信号の差信号を形成する差信号形成
手段を設けて、アナログモノラル演奏信号を相殺し、ボ
ーカル信号のみをデジタルステレオ演奏信号に重畳する
ようにしたので、デジタル及びアナログの両演奏信号間
の干渉を防止することができて、再上音声の品位を向上
させるすることができる音声信号再生装置が得られる。[Effects of the Invention] As described in detail above, according to the present invention, a pair of transmission paths for transmitting a digital stereo performance signal, and a third and fourth transmission path for transmitting an analog monaural performance signal, respectively, are provided. In an audio signal reproducing device for so-called "karaoke," which transmits a vocal signal through one of the third and fourth transmission paths, the audio signal transmitted through the third and fourth transmission paths is A difference signal forming means for forming a difference signal is provided to cancel out the analog monaural performance signal and superimpose only the vocal signal on the digital stereo performance signal, thereby preventing interference between both the digital and analog performance signals. Thus, an audio signal reproducing device is obtained which can improve the quality of reproduced audio.
第1図はこの発明による音声信号再生装置の一実施例の
構成を示すブロック図、第2図はこの発明を説明するた
めの周波、数スペクトル図、第3図は従来の音声信号再
生装置の構成例を示すブロック図である。
(1)は光学ピックアップ、(8)、 (9) はF
M復調器、(10)はPCM復調・信号処理回路、(1
1)、 (12)は加算器、(21)は差動増幅器、D
は音声多重デジタルディスクである。
代
理
人
松
隈
秀
盛
光ティ又りの周汲E灼己置イタ′]
第2図FIG. 1 is a block diagram showing the configuration of an embodiment of an audio signal reproducing device according to the present invention, FIG. 2 is a frequency and number spectrum diagram for explaining the invention, and FIG. 3 is a diagram of a conventional audio signal reproducing device. FIG. 2 is a block diagram showing a configuration example. (1) is an optical pickup, (8) and (9) are F
M demodulator, (10) is PCM demodulation/signal processing circuit, (1
1), (12) is an adder, (21) is a differential amplifier, D
is an audio multiplex digital disc. Agent Hidemori Matsukuma T Matari's Shukumi E-burning ita'] Figure 2
Claims (1)
レオ音声信号の和信号をそれぞれ伝送する第3及び第4
の伝送路とを備え、この第3及び第4の伝送路の一方に
より第3の音声信号を伝送するようにした音声信号再生
装置において、上記第3及び第4の伝送路により伝送さ
れる音声信号の差信号を形成する差信号形成手段を設け
、上記差信号を上記1対の伝送路にそれぞれ供給するよ
うにしたことを特徴とする音声信号再生装置。a pair of transmission paths for transmitting a stereo audio signal; and a third and fourth transmission path for transmitting a sum signal of the stereo audio signals, respectively.
In the audio signal reproducing device, the audio signal is transmitted through one of the third and fourth transmission paths, and the audio signal is transmitted through one of the third and fourth transmission paths. An audio signal reproducing apparatus characterized in that a difference signal forming means for forming a difference signal between signals is provided, and the difference signal is supplied to each of the pair of transmission paths.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP02227566A JP3111465B2 (en) | 1990-08-29 | 1990-08-29 | Audio signal playback device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP02227566A JP3111465B2 (en) | 1990-08-29 | 1990-08-29 | Audio signal playback device |
Publications (2)
Publication Number | Publication Date |
---|---|
JPH04109800A true JPH04109800A (en) | 1992-04-10 |
JP3111465B2 JP3111465B2 (en) | 2000-11-20 |
Family
ID=16862926
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP02227566A Expired - Fee Related JP3111465B2 (en) | 1990-08-29 | 1990-08-29 | Audio signal playback device |
Country Status (1)
Country | Link |
---|---|
JP (1) | JP3111465B2 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0757387A (en) * | 1993-08-18 | 1995-03-03 | Onkyo Corp | Karaoke device (orchestral accompaniment device) |
-
1990
- 1990-08-29 JP JP02227566A patent/JP3111465B2/en not_active Expired - Fee Related
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0757387A (en) * | 1993-08-18 | 1995-03-03 | Onkyo Corp | Karaoke device (orchestral accompaniment device) |
Also Published As
Publication number | Publication date |
---|---|
JP3111465B2 (en) | 2000-11-20 |
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