JPH11344988A - Karaoke device - Google Patents

Karaoke device

Info

Publication number
JPH11344988A
JPH11344988A JP10154965A JP15496598A JPH11344988A JP H11344988 A JPH11344988 A JP H11344988A JP 10154965 A JP10154965 A JP 10154965A JP 15496598 A JP15496598 A JP 15496598A JP H11344988 A JPH11344988 A JP H11344988A
Authority
JP
Japan
Prior art keywords
karaoke
delay
amplitude
sound
playing sound
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.)
Pending
Application number
JP10154965A
Other languages
Japanese (ja)
Inventor
Atsushi Aiiso
温 相磯
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.)
Taito Corp
Original Assignee
Taito Corp
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 Taito Corp filed Critical Taito Corp
Priority to JP10154965A priority Critical patent/JPH11344988A/en
Publication of JPH11344988A publication Critical patent/JPH11344988A/en
Pending legal-status Critical Current

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  • Reverberation, Karaoke And Other Acoustics (AREA)
  • Circuit For Audible Band Transducer (AREA)

Abstract

PROBLEM TO BE SOLVED: To enable recording of only singing voice and to simultaneously suppress howling by extracting the singing voice. SOLUTION: A KARAOKE (accompaniment to recorded music) device is provided with an amplitude detecting circuit 5 to detect amplitude ratio between a KARAOKE playing sound and a second KARAOKE playing sound collected by reproducing the KARAOKE playing sound in KARAOKE environment, a delay detecting circuit 6 to detect delay time between the KARAOKE playing sound and the second KARAOKE playing sound collected by reproducing the KARAOKE playing sound in the KARAOKE environment, a delay adjusting circuit 7 to delay the KARAOKE playing sound by the delay time detected by the delay detecting circuit 6, an amplitude adjusting circuit 8 to multiply the amplitude ratio detected by the amplitude detecting circuit 5 by the KARAOKE playing sound and an adder 9 to add the second KARAOKE playing sound to the KARAOKE playing sound via the delay adjusting circuit 7 and the amplitude adjusting circuit 8.

Description

【発明の詳細な説明】DETAILED DESCRIPTION OF THE INVENTION

【0001】[0001]

【発明の属する技術分野】本発明は、カラオケ装置に関
する。
[0001] The present invention relates to a karaoke apparatus.

【0002】[0002]

【従来の技術】従来のカラオケ装置においても、様々な
機能が提供されてきているが、最近になって、歌い手の
歌声(以下、歌唱音と言う)を録音する機能が要求され
てきている。歌唱音を録音する場合、通常はカラオケ演
奏音を聞きながら歌を唄うため、マイクに入力される音
声には、歌唱音と背景の演奏音が存在し、それが録音さ
れることになる。
2. Description of the Related Art Various functions have been provided in a conventional karaoke apparatus, but recently, a function of recording a singing voice of a singer (hereinafter referred to as a singing sound) has been required. When a singing sound is recorded, the singing sound is usually sung while listening to the karaoke performance sound. Therefore, the voice input to the microphone includes a singing sound and a background performance sound, and these are recorded.

【0003】即ち、図3において、カラオケ演奏部21
で再生されたカラオケ演奏音は、増幅器22で増幅され
てスピーカ23から力ラオケルーム等の力ラオケ演奏環
境20内に放射される。マイク25には、歌唱音の他
に、力ラオケ演奏環境20内を伝播・反射する音24が
マイク25に混入し、録音部27には歌唱音以外の力ラ
オケ演奏音も録音される。
[0003] In other words, in FIG.
The karaoke performance sound reproduced in step (a) is amplified by the amplifier 22 and emitted from the speaker 23 into the power rake performance environment 20 such as a power rake room. In addition to the singing sound, a sound 24 propagating / reflecting in the power Raoke performance environment 20 is mixed into the microphone 25, and a power Raoke performance sound other than the singing sound is also recorded in the recording unit 27.

【0004】[0004]

【発明が解決しようとする課題】従来のカラオケ装置で
は、歌唱音のみを録音部27に録音したい場合であって
も、力ラオケ演奏音も録音されてしまう点で改善余地が
あった。
In the conventional karaoke apparatus, even when it is desired to record only the singing sound in the recording section 27, there is room for improvement in that the power sound is also recorded.

【0005】本発明は、上記の問題点に鑑みてなされた
もので、歌唱音を抽出することで、歌唱音のみの録音を
可能とし、且つハウリングの抑制を図ることを目的とす
る。
SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and has as its object to extract a singing sound to enable recording of only the singing sound and to suppress howling.

【0006】[0006]

【課題を解決するための手段】この目的を達成するため
に、第1発明のカラオケ装置は、カラオケ演奏音と、カ
ラオケ演奏音をカラオケ環境で再生して収拾した第2カ
ラオケ演奏音との振幅比を検出する振幅検出回路と、カ
ラオケ演奏音と、カラオケ演奏音をカラオケ環境で再生
して収拾した第2カラオケ演奏音との遅延時間を検出す
る遅延検出回路と、遅延検出回路によって検出された遅
延時間だけカラオケ演奏音を遅延させる遅延調整回路
と、振幅検出回路によって検出された振幅比をカラオケ
演奏音に乗算する振幅調整回路と、第2カラオケ演奏音
と、遅延調整回路および振幅調整回路を経由したカラオ
ケ演奏音とを加算する加算器とを具備する。
In order to achieve this object, a karaoke apparatus according to a first aspect of the present invention comprises a karaoke performance sound and an amplitude of a second karaoke performance sound reproduced and collected in a karaoke environment. The amplitude detection circuit for detecting the ratio, the karaoke performance sound, the delay detection circuit for detecting the delay time of the second karaoke performance sound reproduced and collected in the karaoke environment, and the delay detection circuit A delay adjustment circuit for delaying the karaoke performance sound by a delay time, an amplitude adjustment circuit for multiplying the karaoke performance sound by the amplitude ratio detected by the amplitude detection circuit, a second karaoke performance sound, a delay adjustment circuit and an amplitude adjustment circuit. And an adder for adding the karaoke performance sound that has passed.

【0007】第2発明のカラオケ装置は、請求項1にお
いて、遅延検出回路および振幅検出回路が、カラオケ曲
の前奏時間に検出動作を行うことを特徴とする。
A karaoke apparatus according to a second aspect of the present invention is characterized in that, in the first aspect, the delay detection circuit and the amplitude detection circuit perform a detection operation at a prelude time of a karaoke song.

【0008】[0008]

【発明の実施の形態】以下、本発明の実施の形態を図面
に基づいて説明する。
Embodiments of the present invention will be described below with reference to the drawings.

【0009】図1は、本発明によるカラオケ装置の一実
施例を示すブロック構成図である。
FIG. 1 is a block diagram showing an embodiment of a karaoke apparatus according to the present invention.

【0010】図1において、カラオケ演奏部21aで再
生されたカラオケ演奏音(デジタル信号)は、DAコン
バーター1でアナログ信号に変換されてから増幅器22
で増幅され、スピーカ23から力ラオケルーム等の力ラ
オケ演奏環境20内に放射される。マイク25には、歌
唱音の他に、力ラオケ演奏環境20内を伝播・反射する
音24がマイク25に混入することになる。マイク25
で収集されたアナログ音声信号は、増幅器26で増幅さ
れADコンバーター4でデジタル信号に変換されてか
ら、振幅検出回路5、遅延検出回路6および加算器9に
供給される。振幅検出回路5および遅延検出回路6に
は、カラオケ演奏部21aからカラオケ演奏音(デジタ
ル信号)も供給されており、振幅検出回路5および遅延
検出回路6は、両信号から振幅比と遅延量とを検出す
る。
In FIG. 1, a karaoke performance sound (digital signal) reproduced by a karaoke performance section 21a is converted to an analog signal by a DA converter 1 and then converted to an amplifier 22.
And is radiated from the speaker 23 into the force Raoke performance environment 20 such as a force Raoke room. In addition to the singing sound, a sound 24 that propagates and reflects in the power Raoke performance environment 20 is mixed into the microphone 25. Microphone 25
The analog audio signal collected in step (1) is amplified by the amplifier 26 and converted into a digital signal by the AD converter 4, and then supplied to the amplitude detection circuit 5, the delay detection circuit 6, and the adder 9. A karaoke performance sound (digital signal) is also supplied from the karaoke performance section 21a to the amplitude detection circuit 5 and the delay detection circuit 6, and the amplitude detection circuit 5 and the delay detection circuit 6 calculate the amplitude ratio, the delay amount, Is detected.

【0011】遅延検出回路6では、次に説明するように
して、両信号から遅延量を検出する。まず、値Z(i)
を次式から求める。 Z(i)=Σ(Sk(j)*Sn(j+i)) iおよびjは、正の整数。このZ(i)の最大値を求
め、その時のiの値とサンプル周期Tsとの積が、求め
る遅延時間tdとなる(図2参照)。
The delay detection circuit 6 detects a delay amount from both signals as described below. First, the value Z (i)
Is calculated from the following equation. Z (i) = Σ (Sk (j) * Sn (j + i)) i and j are positive integers. The maximum value of Z (i) is obtained, and the product of the value of i at that time and the sample period Ts is the delay time td to be obtained (see FIG. 2).

【0012】振幅検出回路5では、次に説明するように
して、両信号から振幅比を検出する。まず、ADコンバ
ーター4から供給されるカラオケ演奏音(デジタル信
号)の成分をSn、その振幅をAnとすると、 An=Σ(Sn(j+i0)2) i0は、td/Ts。tdは、遅延時間。Tsは、サン
プル周期。と表せる。
The amplitude detection circuit 5 detects an amplitude ratio from both signals as described below. First, assuming that the component of the karaoke performance sound (digital signal) supplied from the AD converter 4 is Sn and its amplitude is An, An = Σ (Sn (j + i0) 2 ) i0 is td / Ts. td is the delay time. Ts is a sample period. Can be expressed as

【0013】カラオケ演奏部21aから供給されるカラ
オケ演奏音(デジタル信号)をSk、その振幅をAkと
すると、 Ak=Σ(Sk(j)2) と表せる。従って、An/Akが両信号の振幅比とな
る。
If the karaoke performance sound (digital signal) supplied from the karaoke performance section 21a is Sk and its amplitude is Ak, then Ak = A (Sk (j) 2 ). Therefore, An / Ak is the amplitude ratio of both signals.

【0014】振幅検出回路5および遅延検出回路6での
検出動作は、イントロ(前奏)部分を再生している間に
行われる。即ち、ほとんどの曲はカラオケ演奏が開始し
てからしばらくの間、イントロ(前奏)と呼ばれる部分
があり、この部分では歌唱音がマイクに入ることは無い
ので、この間を利用して検出動作を行うことで、正確な
値が得られるようにしている。
The detection operations in the amplitude detection circuit 5 and the delay detection circuit 6 are performed while the intro (prelude) portion is being reproduced. That is, most songs have a portion called an intro (prelude) for a while after the start of the karaoke performance, and since the singing sound does not enter the microphone in this portion, a detection operation is performed using this period. In this way, an accurate value can be obtained.

【0015】振幅検出回路5で求めた振幅比An/Ak
は振幅調整回路8に供給され、遅延調整回路6で求めた
遅延時間tdは、遅延調整回路7に供給される。遅延調
整回路7は、カラオケ演奏部21aから供給されたカラ
オケ演奏音(デジタル信号)を遅延時間tdだけ遅延さ
せて、振幅調整回路8に供給する。振幅調整回路8は、
振幅比An/Akを乗算して、加算器9に供給する。
The amplitude ratio An / Ak obtained by the amplitude detection circuit 5
Is supplied to the amplitude adjustment circuit 8, and the delay time td obtained by the delay adjustment circuit 6 is supplied to the delay adjustment circuit 7. The delay adjustment circuit 7 delays the karaoke performance sound (digital signal) supplied from the karaoke performance section 21a by a delay time td, and supplies the result to the amplitude adjustment circuit 8. The amplitude adjustment circuit 8
The result is multiplied by the amplitude ratio An / Ak and supplied to the adder 9.

【0016】加算器9のx点の信号は、歌唱音と力ラオ
ケ演奏音が伝播・反射してマイク25に混入した信号と
の合成信号であり、y点の信号は、伝播・反射してマイ
ク25に混入した音を擬似した信号であり、z点の信号
は、(x点の信号)−(y点の信号)となり、概ね歌唱
音が出力される。即ち、加算器9の出力として、力ラオ
ケ演奏環境20内を伝播・反射する音24がキャンセル
した信号が得られることになる。この信号は、スイッチ
10を介してデジタル録音部27aに出力される。
The signal at the point x of the adder 9 is a composite signal of the singing sound and the sound of the power rake performance mixed into the microphone 25 after being propagated and reflected, and the signal at the point y is propagated and reflected. This signal is a signal simulating the sound mixed into the microphone 25, and the signal at the z point is (signal at the x point) − (signal at the y point), and a singing sound is generally output. That is, as the output of the adder 9, a signal in which the sound 24 propagating / reflecting in the power rake performance environment 20 is canceled is obtained. This signal is output to the digital recording unit 27a via the switch 10.

【0017】以上で説明した実施例によれば、マイク2
5から入力されるカラオケ演奏音を内部で消去出来る。
イントロ演奏時に計測される定常的な背景雑音をも消去
することが可能となる。カラオケ曲のイントロ部分を利
用して消去パラメータを決定するため、カラオケの歌唱
には何ら影響を与えない。カラオケ演奏・歌唱にありが
ちなハウリングの抑制効果もある。
According to the embodiment described above, the microphone 2
The karaoke performance sound input from 5 can be deleted internally.
It is also possible to eliminate stationary background noise measured during intro performance. Since the erasing parameter is determined using the intro part of the karaoke song, the karaoke singing is not affected at all. It also has the effect of suppressing howling that is common in karaoke performances and singing.

【0018】また、イントロの時にカラオケ演奏音がマ
イクに入力されるまでの遅延時間と振幅値(消去パラメ
ータ)を判定(測定)することで、歌唱音と演奏音が混
在して入力されても内部で消去され、歌唱音のみが録音
することが出来る。歌唱音は演奏音に比べて、低い周波
数成分で構成されることが知られており、この性貫を利
用して、録音データ(録音された歌唱音をデジタル・デ
ータに変換したもの)の容量を軽減する等の各種デジタ
ル信号処理が使用できる。
Further, by determining (measuring) the delay time and the amplitude value (erasing parameter) until the karaoke performance sound is input to the microphone at the time of the intro, even if the singing sound and the performance sound are mixedly input. It is erased internally and only singing sounds can be recorded. It is known that singing sounds are composed of lower frequency components than performance sounds, and the capacity of recorded data (converted singing sounds into digital data) using this property is known. Various kinds of digital signal processing such as reducing noise can be used.

【0019】以上、本発明を実施の形態により説明した
が、本発明の技術的思想によれば、次のような手段で、
本発明の改良をすることが可能である。
As described above, the present invention has been described by the embodiments. According to the technical idea of the present invention, the following means is used.
It is possible to improve the invention.

【0020】第1に、カラオケ演奏がマイクに入力され
る場合、複数の消去パラメータの存在が考えられるが、
それらに対応した消去方式。第2に、空気中を伝播する
音響信号(カラオケ演奏信号)は周波数特性を持つこと
も考えられ、消去パラメータを複数の周波数帯に分割し
て対応する方式。第3に、上記の第1および第2の方法
を組み合わせた方式である。
First, when a karaoke performance is input to a microphone, there may be a plurality of erasure parameters.
Erase method corresponding to them. Second, a sound signal (a karaoke performance signal) that propagates in the air may have frequency characteristics, and the erasure parameter is divided into a plurality of frequency bands to cope with it. Third, a method combining the above first and second methods.

【0021】なお、上述した実施例では、デジタル回路
による処理を例にして説明したが、本発明の技術的思想
はアナログ回路によっても実現することが可能である。
In the above-described embodiment, the processing by the digital circuit has been described as an example. However, the technical idea of the present invention can be realized by an analog circuit.

【0022】[0022]

【発明の効果】以上のように、本発明のカラオケ装置に
よれば、カラオケ演奏音と、カラオケ演奏音をカラオケ
環境で再生して収拾した第2カラオケ演奏音との振幅比
を検出する振幅検出回路と、カラオケ演奏音と、カラオ
ケ演奏音をカラオケ環境で再生して収拾した第2カラオ
ケ演奏音との遅延時間を検出する遅延検出回路と、遅延
検出回路によって検出された遅延時間だけカラオケ演奏
音を遅延させる遅延調整回路と、振幅検出回路によって
検出された振幅比をカラオケ演奏音に乗算する振幅調整
回路と、第2カラオケ演奏音と、遅延調整回路および振
幅調整回路を経由したカラオケ演奏音とを加算する加算
器とを設けたので、歌唱音を抽出することが可能とな
る。
As described above, according to the karaoke apparatus of the present invention, the amplitude detection for detecting the amplitude ratio between the karaoke performance sound and the second karaoke performance sound reproduced and collected in the karaoke environment. A delay circuit for detecting a delay time between a circuit, a karaoke performance sound, and a second karaoke performance sound reproduced and collected in the karaoke environment; and a karaoke performance sound for the delay time detected by the delay detection circuit. Delay adjustment circuit, an amplitude adjustment circuit for multiplying the karaoke performance sound by the amplitude ratio detected by the amplitude detection circuit, a second karaoke performance sound, and a karaoke performance sound via the delay adjustment circuit and the amplitude adjustment circuit. Is provided, the singing sound can be extracted.

【0023】これにより、歌唱音のみの録音を可能と
し、且つハウリングの抑制を図ることができる。
Thus, it is possible to record only the singing sound and suppress howling.

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

【図1】本発明によるカラオケ装置の一実施例を示すブ
ロック構成図である。
FIG. 1 is a block diagram showing an embodiment of a karaoke apparatus according to the present invention.

【図2】本発明によるカラオケ装置の一実施例を示すブ
ロック構成図である。
FIG. 2 is a block diagram showing an embodiment of a karaoke apparatus according to the present invention.

【図3】従来のカラオケ装置の一例を示すブロック構成
図である。
FIG. 3 is a block diagram showing an example of a conventional karaoke apparatus.

【符号の説明】[Explanation of symbols]

1 DAコンバーター 4 ADコンバーター 5 振幅検出回路 6 遅延検出回路 7 遅延調整回路 8 振幅調整回路 9 加算器 10 スイッチ 20 力ラオケ演奏環境 21a カラオケ演奏部 22 増幅器 23 スピーカ 24 伝播・反射する音 25 マイク 26 増幅器 27a デジタル録音部 DESCRIPTION OF SYMBOLS 1 DA converter 4 AD converter 5 Amplitude detection circuit 6 Delay detection circuit 7 Delay adjustment circuit 8 Amplitude adjustment circuit 9 Adder 10 Switch 20 Power raoke performance environment 21a Karaoke performance part 22 Amplifier 23 Speaker 24 Propagated / reflected sound 25 Microphone 26 Amplifier 27a Digital recording unit

Claims (2)

【特許請求の範囲】[Claims] 【請求項1】カラオケ演奏音と、該カラオケ演奏音をカ
ラオケ環境で再生して収拾した第2カラオケ演奏音との
振幅比を検出する振幅検出回路と、 カラオケ演奏音と、該カラオケ演奏音をカラオケ環境で
再生して収拾した第2カラオケ演奏音との遅延時間を検
出する遅延検出回路と、 前記遅延検出回路によって検出された遅延時間だけ前記
カラオケ演奏音を遅延させる遅延調整回路と、 前記振幅検出回路によって検出された振幅比を前記カラ
オケ演奏音に乗算する振幅調整回路と、 前記第2カラオケ演奏音と、前記遅延調整回路および前
記振幅調整回路を経由した前記カラオケ演奏音とを加算
する加算器とを具備するカラオケ装置。
1. An amplitude detection circuit for detecting an amplitude ratio between a karaoke performance sound and a second karaoke performance sound reproduced and collected in a karaoke environment, and a karaoke performance sound and the karaoke performance sound A delay detection circuit for detecting a delay time from a second karaoke performance sound reproduced and collected in a karaoke environment; a delay adjustment circuit for delaying the karaoke performance sound by the delay time detected by the delay detection circuit; An amplitude adjustment circuit for multiplying the karaoke performance sound by an amplitude ratio detected by a detection circuit; an addition for adding the second karaoke performance sound and the karaoke performance sound via the delay adjustment circuit and the amplitude adjustment circuit Karaoke device comprising a container.
【請求項2】前記遅延検出回路および前記振幅検出回路
が、カラオケ曲の前奏時間に検出動作を行うことを特徴
とする請求項1に記載のカラオケ装置。
2. The karaoke apparatus according to claim 1, wherein said delay detection circuit and said amplitude detection circuit perform a detection operation at a pre-play time of a karaoke song.
JP10154965A 1998-06-03 1998-06-03 Karaoke device Pending JPH11344988A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP10154965A JPH11344988A (en) 1998-06-03 1998-06-03 Karaoke device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP10154965A JPH11344988A (en) 1998-06-03 1998-06-03 Karaoke device

Publications (1)

Publication Number Publication Date
JPH11344988A true JPH11344988A (en) 1999-12-14

Family

ID=15595780

Family Applications (1)

Application Number Title Priority Date Filing Date
JP10154965A Pending JPH11344988A (en) 1998-06-03 1998-06-03 Karaoke device

Country Status (1)

Country Link
JP (1) JPH11344988A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2015073149A (en) * 2013-10-01 2015-04-16 Kddi株式会社 Audio signal processing apparatus, recording and reproducing apparatus and program

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2015073149A (en) * 2013-10-01 2015-04-16 Kddi株式会社 Audio signal processing apparatus, recording and reproducing apparatus and program

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