JPS6151800B2 - - Google Patents
Info
- Publication number
- JPS6151800B2 JPS6151800B2 JP54063232A JP6323279A JPS6151800B2 JP S6151800 B2 JPS6151800 B2 JP S6151800B2 JP 54063232 A JP54063232 A JP 54063232A JP 6323279 A JP6323279 A JP 6323279A JP S6151800 B2 JPS6151800 B2 JP S6151800B2
- Authority
- JP
- Japan
- Prior art keywords
- voice
- signal
- driver
- frequency
- detection means
- 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.)
- Expired
Links
- 238000001514 detection method Methods 0.000 claims description 24
- 230000005236 sound signal Effects 0.000 claims description 5
- 238000006243 chemical reaction Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000007257 malfunction Effects 0.000 description 2
- 239000003990 capacitor Substances 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は、運転者の音声により車載装置品を操
作するために用いる音声検出装置に関する。DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a voice detection device used to operate an on-vehicle device using a driver's voice.
近年、コンピユータの分野においては、音声信
号の処理技術が向上し、音声入力によつて装置を
直接操作できるようになつた。斯る状況の下に、
自動車においては、運転操作に集中できるように
するため、音響装置（例えばカーラジオ、カース
テレオ等）のオン、オフを運転者の音声入力によ
り行なうことが考えられている。ところで、自動
車において運転者の音声入力によつてカーラジオ
等のオン、オフを行なおうとするような場合に
は、エンジン騒音、走行騒音、音響装置の再生音
等の運転者以外の音声入力と区別する装置が必要
となる。このような音声検出装置としては、一般
に、帯域フイルタを用いて運転者の音声帯域のみ
を抽出する手段が考えられる。
In recent years, in the field of computers, audio signal processing technology has improved, and it has become possible to directly operate devices using audio input. Under such circumstances,
In automobiles, in order to allow the driver to concentrate on driving, it has been considered to turn on and off audio devices (eg, car radios, car stereos, etc.) using voice input from the driver. By the way, when trying to turn on or off a car radio, etc. in a car using voice input from the driver, it is difficult to turn on or off a car radio, etc. using voice input from a person other than the driver, such as engine noise, running noise, or sound played by a sound device. A distinguishing device is required. As such a voice detection device, it is generally possible to use a bandpass filter to extract only the driver's voice band.
しかしながら、このような従来の技術において
は、エンジン騒音等による誤動作は避けられるも
のの、運転者と同じ周波数帯域をもつラジオ、カ
ーステレオ等による音声入力を除去することがで
きず、また、一定レベルを越える音声入力を運転
者の音声入力として判別する手段も考えられる
が、誤動作を確実に防ぐために判別レベルを高め
ると、相当大きな声を出さなければカーラジオ等
がオン、オフしないという問題がある。
However, although these conventional technologies can avoid malfunctions caused by engine noise, etc., they cannot eliminate audio input from radios, car stereos, etc. that have the same frequency band as the driver's, and they also cannot eliminate audio input from radios, car stereos, etc. that have the same frequency band as the driver's. Although it is possible to consider a means of determining voice input exceeding the level of the driver's voice as the driver's voice input, if the discrimination level is raised to ensure that malfunctions occur, there is a problem in that the car radio etc. will not turn on or off unless the user speaks very loudly.
本発明は上記問題に鑑みてなされたもので、特
定の操作者の近傍に設けられて音声を検出する音
声検出手段と、操作者の周囲に設置してある所定
音響装置の音声信号を上記音声検出手段の周波数
特性に合せて補償変換して出力する周波数補償手
段と、上記音声検出手段で検出した音声信号と上
記周波数補償手段の出力信号とから上記特定の操
作者の音声信号を判別するように演算する演算手
段とを備えたものである。
The present invention has been made in view of the above problems, and includes a voice detection means installed near a specific operator to detect voice, and a voice signal from a predetermined sound device installed around the operator to detect the voice. A frequency compensating means for compensating and converting the frequency characteristic of the detecting means and outputting the result, and a voice signal of the specific operator is determined from the voice signal detected by the voice detecting means and the output signal of the frequency compensating means. and calculation means for calculating.
以下、添付図面に基づいて本発明の実施例を説
明する。
Embodiments of the present invention will be described below based on the accompanying drawings.
図は本発明の実施例を示したブロツク図で、１
は運転者の音声を検知する音声検出手段で、マイ
クロフオンなどの音声〜電気信号変換手段が用い
られ、運転者の音声が届き易い位置、例えば運転
席の天井、ステアリングの中央もしくはメータパ
ネル部などに設置され、運転者の音声と音響装置
（例えばカーラジオ、カーステレオ等）のスピー
カ５０から発せられる音声とが重畳された音声
V1を電気信号S1に変換する。 The figure is a block diagram showing an embodiment of the present invention.
is a voice detection means that detects the driver's voice, and uses a voice-to-electrical signal conversion means such as a microphone, and is located at a location where the driver's voice can easily reach, such as the ceiling of the driver's seat, the center of the steering wheel, or the instrument panel. The driver's voice and the voice emitted from the speaker 50 of the audio device (e.g. car radio, car stereo, etc.) are superimposed.
Convert V 1 to electrical signal S 1 .
４０は周波数補償手段で、この周波数補償手段
４０は、音声検出手段１、即ちマイクロフオン等
の周波数特性に合うように、スピーカ５０の駆動
用の電気信号S40の周波数特性を補償するもの
で、コンデンサ、インダクタンスなどの組合せで
なるフイルタ回路を用いる。 40 is a frequency compensation means, and this frequency compensation means 40 compensates the frequency characteristics of the electric signal S 40 for driving the speaker 50 so as to match the frequency characteristics of the voice detection means 1, that is, a microphone, etc. A filter circuit consisting of a combination of capacitors, inductances, etc. is used.
電気信号S40について、周波数特性の補償を必
要とする理由は、電気信号S40はスピーカ５０で
音声に変換するとき、スピーカ５０に周波数特性
により変化し、更に音声検出手段１で音声から電
気信号に変換するとき、音声検出手段１の周波数
特性により変化して変換信号S1に含まれる電気信
号S40に基づいた信号分の周波数特性が変化す
る。そのため、音声検出手段１の変換信号S1に含
まれる電気信号S40に依存した信号分と同じ周波
数特性の変化を、電気信号40に施すことが必要で
あることによる。従つて、周波数補償手段４０の
補償特性としては、スピーカ５０及びマイクロフ
オンの周波数特性に近似したものとすることにな
る。尚、スピーカ５０或はマイクロフオンの周波
数特性のうち、いずれかの影響が支配的であるな
らば、周波数補償手段４０は、支配的な影響をも
つ周波数特性に近似した補償を電気信号S40に施
すようにすれば良い。 The reason why it is necessary to compensate for the frequency characteristics of the electrical signal S 40 is that when the electrical signal S 40 is converted into audio by the speaker 50, it changes depending on the frequency characteristics of the speaker 50. When converting into , the frequency characteristics of the signal based on the electrical signal S 40 included in the converted signal S 1 change depending on the frequency characteristics of the audio detection means 1 . Therefore, it is necessary to apply the same frequency characteristic change to the electrical signal 40 as the signal dependent on the electrical signal S 40 included in the converted signal S 1 of the audio detection means 1. Therefore, the compensation characteristics of the frequency compensation means 40 are set to be similar to the frequency characteristics of the speaker 50 and the microphone. Incidentally, if the influence of either the frequency characteristics of the speaker 50 or the microphone is dominant, the frequency compensation means 40 compensates the electric signal S 40 in a way that approximates the frequency characteristic having the dominant influence. All you have to do is apply it.
１０は演算手段で、例えば差動増幅回路などの
演算手段が用いられ、音声検出手段１の出力信号
S1と、周波数補償手段４０の出力信号S2との差、
S10＝S1−S2を得る。 10 is a calculation means, for example, a calculation means such as a differential amplifier circuit is used, and the output signal of the audio detection means 1 is
the difference between S 1 and the output signal S 2 of the frequency compensation means 40;
We get S 10 =S 1 −S 2 .
そこで、この実施例における作用を説明する
に、運転者が発した音声ＶAの音声検出手段１の
位置での大きさをＶA1、音響装置の音声ＶBの音
声検出手段１の位置での大きさをＶB1とすると、
音声検出手段１に届く重畳された音声V1の大き
さは、
V1＝ＶA1＋ＶB1
ここで、スピーカ５０の電気信号〜音声変換の
周波数特性を50、音声検出手段１の音声〜電気
信号変換の周波数特性１とすると
ＶB1＝50・S40
S1＝１・V1＝１（ＶA1＋ＶB1）
＝１・ＶA1＋１・50・S40
周波数補償手段４０の周波数特性40をスピー
カ５０の周波数特性50と音声検出手段１の周波
数特性１の積とすると
S2＝１・50・S40
S10＝S1−S2＝１・ＶA1＋１・50・S40
−１・50・S40＝１・ＶA1
となり、スピーカ５０からの音声ＶBの項が除去
される。 Therefore, to explain the operation of this embodiment, the magnitude of the voice V A emitted by the driver at the position of the voice detection means 1 is V A1 , and the magnitude of the voice V B of the audio device at the position of the voice detection means 1 is V A1 . If the size is V B1 ,
The magnitude of the superimposed voice V 1 that reaches the voice detection means 1 is: V 1 =V A1 +V B1 Here, the frequency characteristic of the electrical signal to voice conversion of the speaker 50 is 50 , and the magnitude of the voice to electric signal of the voice detection means 1 is 50. If the frequency characteristic of the conversion is 1 , then V B1 = 50・S 40 S 1 = 1・V 1 = 1 (V A1 +V B1 ) = 1・V A1 + 1・50・S 40 The frequency characteristic 40 of the frequency compensation means 40 is If the product of the frequency characteristic 50 of the speaker 50 and the frequency characteristic 1 of the voice detection means 1 is S 2 = 1・50・S 40 S 10 =S 1 −S 2 = 1・V A1 + 1・50・S 40 − 1・50・S 40 = 1・V A1 , and the term of the audio V B from the speaker 50 is removed.
即ち、演算手段１０の出力信号S10には運転者
の音声ＶAにより得られる信号分のみが含まれる
もので、他の音源からの影響を除去することがで
きる。 That is, the output signal S10 of the calculation means 10 includes only the signal obtained from the driver's voice VA , and the influence from other sound sources can be removed.
尚、運転者以外の音声発生源が１つの場合を例
にとるものであつたが、他の音声発生源が複数あ
る場合は、各発生源に応じた周波数補償手段４０
を用いれば良い。 Note that, although the case where there is one voice generation source other than the driver is taken as an example, if there are multiple other voice generation sources, the frequency compensation means 40 is adjusted according to each generation source.
You can use .
また、上述の実施例は、自動車の場合を例にと
るものであつたが、操作者以外の音声発生源があ
る騒音の多い場所での音声入力による操作、例え
ばテレビのチヤンネルのリモート切換え等のため
の音声入力装置としても適用できるものである。 In addition, although the above-mentioned embodiment takes the case of a car as an example, operations by voice input in a noisy place where there is a voice source other than the operator, such as remote switching of TV channels, etc. It can also be applied as a voice input device for other purposes.
本発明の音声検出装置は以上説明したように、
運転者の音声を音声検出手段で検出し、一方、周
囲の音響装置の音声信号を周波数補償手段で音響
装置のスピーカと上記音声検出手段の周波数特性
に合せて補償変換し、上記音声検出手段で検出し
た音声信号と上記周波数補償手段の出力信号を演
算手段で上記操作者の音声信号を判別するように
演算することによつて他の音声発生源による不要
信号分を、運転者の音声信号から完全若しくは無
視できる程度に除去するように構成したことで、
運転者以外の音声入力が多い自動車においても、
運転者の音声を確実に検知することができ、カー
ラジオもしくはカーステレオ等を聞いたままの状
態であつても、各種スイツチ等の作動を運転者の
音声入力によつて確実に操作することができ、運
転者の音声信号のみを得ることができるので、音
声検出装置に続いて設けられる音声処理装置も簡
潔な構成にできる利点もある。
As explained above, the voice detection device of the present invention has the following features:
The voice of the driver is detected by the voice detection means, while the voice signal of the surrounding audio device is compensated and converted by the frequency compensation means in accordance with the frequency characteristics of the speaker of the audio device and the voice detection means, and the voice signal of the voice detection device is detected by the voice detection means. By calculating the detected audio signal and the output signal of the frequency compensation means using the calculation means so as to distinguish the operator's audio signal, unnecessary signals caused by other audio sources are removed from the driver's audio signal. By configuring the structure to remove it completely or to a negligible extent,
Even in cars where there are many voice inputs from people other than the driver,
It is possible to reliably detect the driver's voice, and even when listening to the car radio or car stereo, various switches can be operated reliably by the driver's voice input. Since only the driver's voice signal can be obtained, there is also the advantage that the voice processing device provided subsequent to the voice detection device can also have a simple configuration.
本発明の実施例を示したブロツク図である。
１……音声検出手段、１０……演算手段、４０
……周波数補償手段、５０……スピーカ。
FIG. 1 is a block diagram showing an embodiment of the present invention. 1... Voice detection means, 10... Calculation means, 40
... Frequency compensation means, 50 ... Speaker.
Claims (1)
する音声検出手段と、操作者の周囲に設置してあ
る所定音響装置の音声信号を上記音声検出手段の
周波数特性に合せて補償変換して出力する周波数
補償手段と、上記音声検出手段で検出した音声信
号と上記周波数補償手段の出力信号とから上記特
定の操作者の音声信号を判別するように演算する
演算手段とを備えたことを特徴とする音声検出装
置。1. A sound detection means installed near a specific operator to detect sound, and a sound signal from a predetermined sound device installed around the operator, which is compensated and converted to match the frequency characteristics of the sound detection means. It is characterized by comprising a frequency compensation means for outputting, and a calculation means for calculating to determine the voice signal of the specific operator from the voice signal detected by the voice detection means and the output signal of the frequency compensation means. voice detection device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6323279A JPS55155400A (en) | 1979-05-24 | 1979-05-24 | Voice detector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6323279A JPS55155400A (en) | 1979-05-24 | 1979-05-24 | Voice detector |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS55155400A JPS55155400A (en) | 1980-12-03 |
| JPS6151800B2 true JPS6151800B2 (en) | 1986-11-10 |
Family
ID=13223253
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6323279A Granted JPS55155400A (en) | 1979-05-24 | 1979-05-24 | Voice detector |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS55155400A (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57134523U (en) * | 1981-02-16 | 1982-08-21 | ||
| JPH069000B2 (en) * | 1981-08-27 | 1994-02-02 | キヤノン株式会社 | Voice information processing method |
| JPS5949742A (en) * | 1982-09-17 | 1984-03-22 | 工業技術院長 | Apparatus for detecting exhalation force |
| JPS6142690U (en) * | 1984-08-20 | 1986-03-19 | 新星電機工業株式会社 | Voice or breath paging device |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5511250A (en) * | 1978-07-11 | 1980-01-26 | Sanyo Electric Co | Voice discriminating circuit in remote controller |
-
1979
- 1979-05-24 JP JP6323279A patent/JPS55155400A/en active Granted
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5511250A (en) * | 1978-07-11 | 1980-01-26 | Sanyo Electric Co | Voice discriminating circuit in remote controller |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS55155400A (en) | 1980-12-03 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JPH034611A (en) | On-vehicle automatic sound volume adjustment device | |
| JPH0389706A (en) | Automatic sound volume adjustment device | |
| JPS6151800B2 (en) | ||
| JP3774580B2 (en) | Voice input device | |
| JP2000231399A (en) | Noise reducing device | |
| JP2874176B2 (en) | Audio signal processing device | |
| JPS5863207A (en) | Sound reproducer | |
| EP0488056B1 (en) | Noise isolated amplifier circuit | |
| JPS637978B2 (en) | ||
| JPH0246125Y2 (en) | ||
| JPH073707Y2 (en) | External trigger detection circuit | |
| JPH02244098A (en) | Voice signal processor | |
| JPH04119400A (en) | Speech recognition device | |
| JPH0611679Y2 (en) | In-vehicle audio equipment signal transmission device | |
| JPS6247295A (en) | Electrical equipment for vehicle | |
| JP2592001Y2 (en) | In-vehicle sound reproduction equipment | |
| JPH0277799A (en) | On-vehicle speech recognition device | |
| JPS6246351Y2 (en) | ||
| JPH01319400A (en) | Vehicle mounted acoustic reproducing equipment | |
| JPH0574015U (en) | Power amplifier unit | |
| JPS61117999A (en) | Audio device mounted on automobile | |
| JPS635720U (en) | ||
| JPH024508Y2 (en) | ||
| JPS636910Y2 (en) | ||
| JPH0687093U (en) | Emergency vehicle approach detection device |