JPH05199593A - Speaker measuring instrument - Google Patents
Speaker measuring instrumentInfo
- Publication number
- JPH05199593A JPH05199593A JP734092A JP734092A JPH05199593A JP H05199593 A JPH05199593 A JP H05199593A JP 734092 A JP734092 A JP 734092A JP 734092 A JP734092 A JP 734092A JP H05199593 A JPH05199593 A JP H05199593A
- Authority
- JP
- Japan
- Prior art keywords
- speaker
- amplifier
- tone burst
- output
- microphone
- 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
Landscapes
- Measurement Of Mechanical Vibrations Or Ultrasonic Waves (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明はスピーカの過渡応答特性
の測定方法を改善するスピーカの測定装置に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a speaker measuring apparatus which improves a method of measuring a transient response characteristic of a speaker.
【０００２】[0002]
【従来の技術】近年、スピーカの測定装置は正弦波をス
イープすることによって音圧周波数特性を得る方式が一
般的に普及している。この測定方法は、スピーカの定常
状態での特性を把握することができる。ところが、実際
にスピーカから再生されるのは、音声や音楽と言った絶
えず変化する過渡的で、非定常な信号が多い。このため
従来の測定方法では、必ずしもスピーカの正しい特性を
評価しきれていなかった。2. Description of the Related Art In recent years, a method for obtaining a sound pressure frequency characteristic by sweeping a sine wave has been generally used as a measuring device for a speaker. This measuring method can grasp the characteristics of the speaker in a steady state. However, what is actually reproduced from the speaker is a transient, non-stationary signal such as voice or music that constantly changes. Therefore, the conventional measurement method has not always been able to fully evaluate the correct characteristics of the speaker.
【０００３】そこで最近では、インパルスやトーンバー
スト波によってスピーカの過渡応答特性を測定する方法
が開発され、実使用状態に近いスピーカの測定が可能に
なってきているが、インパルスやトーンバースト波でも
まだまだ音声や音楽信号に置き代わることができていな
いのが現状である。Therefore, recently, a method of measuring the transient response characteristics of a speaker by an impulse or tone burst wave has been developed, and it has become possible to measure a speaker close to a state of actual use, but impulse or tone burst waves are still available. At present, it is not possible to replace voice and music signals.
【０００４】以下に従来のスピーカの測定装置について
説明する。図５は従来のスピーカの測定装置の一例を示
したものである。A conventional speaker measuring device will be described below. FIG. 5 shows an example of a conventional speaker measuring apparatus.
【０００５】１はインパルスやトーンバースト波を発生
する信号発生器、２は増幅器、３はスピーカ、４はマイ
クロホン、５は無響室、６は計測用増幅器、７は周波数
分析器である。Reference numeral 1 is a signal generator for generating impulses or tone burst waves, 2 is an amplifier, 3 is a speaker, 4 is a microphone, 5 is an anechoic chamber, 6 is a measurement amplifier, and 7 is a frequency analyzer.
【０００６】以上のように構成されるスピーカの測定装
置について、以下その動作について説明する。The operation of the speaker measuring apparatus having the above-described structure will be described below.
【０００７】測定に供されるスピーカ３とマイクロホン
４を互いに対向して配置し、無響室５の内部に設置す
る。信号発生器１によって図６に示すインパルス、また
はトーンバースト波を発生させ、増幅器２により、入力
された信号を増幅して、スピーカ３を駆動する。スピー
カ３から発せられた音、すなわちインパルス応答やトー
ンバースト応答はマイクロホン４で検出し、計測用増幅
器６で増幅されて周波数分析器７によって記録される。
このようにしてスピーカの過渡応答特性が測定されてい
た。The speaker 3 and the microphone 4 used for the measurement are arranged so as to face each other, and are installed inside the anechoic chamber 5. The signal generator 1 generates the impulse or tone burst wave shown in FIG. 6, and the amplifier 2 amplifies the input signal to drive the speaker 3. A sound emitted from the speaker 3, that is, an impulse response or a tone burst response is detected by the microphone 4, amplified by the measurement amplifier 6, and recorded by the frequency analyzer 7.
In this way, the transient response characteristic of the speaker has been measured.
【０００８】[0008]
【発明が解決しようとする課題】しかしながら上記の従
来の構成では、スピーカの過渡応答特性が正しく測定さ
れているとは言えない。なぜならば、インパルスや、ト
ーンバースト波のような過渡的な音は、一般的に我々が
聴いて楽しむ通常の音楽信号には一部にしか含まれてい
ない。音楽信号の波形は、ジャンルや演奏される曲目に
よっても異なるが、全体を通して共通な形は、ベースと
なる低い周波数成分が大きな変化をせずに定常的に持続
し、この成分の上に高い周波数成分が過渡的に急激な変
化を伴って加わっているものである。However, it cannot be said that the transient response characteristics of the loudspeaker are correctly measured in the above-mentioned conventional configuration. Because, transient sounds such as impulses and tone burst waves are generally only partially included in the normal music signal that we listen to and enjoy. Although the waveform of the music signal varies depending on the genre and the song to be played, the common shape throughout is that the low frequency component that is the base continues steadily without significant changes, and the high frequency component above this component The components are transiently added with abrupt changes.
【０００９】このように、従来のインパルスやトーンバ
ースト波によるスピーカの過渡応答特性を測定する測定
装置では、現実からかけ離れたスピーカの動作状態での
測定を行っているに過ぎないので、人間が聴いてスピー
カの良し悪しを判断するときと相関のある測定データを
得ることができないという問題点を有していた。As described above, in the conventional measuring device for measuring the transient response characteristic of the speaker by the impulse or the tone burst wave, since the measurement is performed only in the operating state of the speaker which is far from the reality, a human being listens to it. However, there is a problem in that it is not possible to obtain measurement data that correlates with the time when judging the quality of the speaker.
【００１０】本発明は上記従来の問題点を解決するもの
で、スピーカの定常状態と過渡状態を両方を含んだとき
の特性、すなわち人間が聴感評価を行った結果と相関の
あるスピーカの過渡応答特性を測定することができるス
ピーカの測定装置を提供することを目的とするものであ
る。The present invention solves the above-mentioned conventional problems, and the characteristics of the speaker when both the steady state and the transient state are included, that is, the transient response of the speaker that correlates with the result of human hearing evaluation. An object of the present invention is to provide a speaker measuring device capable of measuring characteristics.
【００１１】[0011]
【課題を解決するための手段】この目的を達成するため
に本発明のスピーカの測定装置は、単一正弦波を発生す
る正弦波発生器と、トーンバースト波を発生するトーン
バースト波発生器と、前記正弦波発生器の出力と、前記
トーンバースト波発生器の出力を合成するミキシング回
路と、このミキシング回路の出力を増幅し、測定するス
ピーカに接続する増幅器と、前記スピーカに対面して配
置するマイクロホンと、このマイクロホンの出力を増幅
する計測用増幅器と、この計測用増幅器に接続される周
波数分析器から構成されるものである。To achieve this object, a speaker measuring apparatus of the present invention comprises a sine wave generator for generating a single sine wave and a tone burst wave generator for generating a tone burst wave. A mixing circuit for synthesizing the output of the sine wave generator and the output of the tone burst wave generator, an amplifier for amplifying the output of the mixing circuit and connected to a speaker for measurement, and an arrangement facing the speaker. The microphone, the measurement amplifier for amplifying the output of the microphone, and the frequency analyzer connected to the measurement amplifier.
【００１２】[0012]
【作用】上記構成のスピーカの測定装置は、定常信号で
ある連続正弦波と、過渡信号であるトーンバースト波を
加算したものを測定信号とし、この測定信号をスピーカ
に加え、その応答を測定するものである。この測定信号
は、聴取者が実際に聴く音楽信号に置き換えることので
きる定常状態と過渡状態を両方を含んだ性質を備えてい
る。これによって、スピーカが実際に音楽信号を加えら
れたときの動作状態を測定することができるので、人間
が耳で聴いた評価と相関のあるスピーカの過渡応答特性
を測定することができる。In the speaker measuring device having the above-described structure, a continuous sine wave which is a stationary signal and a tone burst wave which is a transient signal are added as a measurement signal, the measurement signal is applied to the speaker, and its response is measured. It is a thing. This measurement signal has a property including both a steady state and a transient state that can be replaced by a music signal that the listener actually listens to. As a result, the operating state of the speaker when the music signal is actually applied can be measured, so that the transient response characteristic of the speaker that correlates with the evaluation heard by the human ear can be measured.
【００１３】[0013]
【実施例】以下本発明の一実施例について、図面を参照
しながら説明する。図１は本発明の一実施例におけるス
ピーカの測定装置の構成を示すブロック図である。図１
において、８は正弦波発生器、９はトーンバースト波発
生器、１０はミキシング回路、１１は増幅器、１２はス
ピーカ、１３はマイクロホン、１４は無響室、１５は計
測用増幅器、１６は周波数分析器である。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a block diagram showing the configuration of a speaker measuring apparatus according to an embodiment of the present invention. Figure 1
, 8 is a sine wave generator, 9 is a tone burst wave generator, 10 is a mixing circuit, 11 is an amplifier, 12 is a speaker, 13 is a microphone, 14 is an anechoic chamber, 15 is an amplifier for measurement, 16 is frequency analysis. It is a vessel.
【００１４】以上のように構成されたスピーカの測定装
置について、以下その動作を説明する。まず、測定に供
されるスピーカ１２とマイクロホン１３を互いに対向し
て配置し無響室１４の内部に設置する。The operation of the speaker measuring apparatus configured as described above will be described below. First, the speaker 12 and the microphone 13 used for the measurement are arranged to face each other and are installed inside the anechoic chamber 14.
【００１５】次に正弦波発生器８によって図２に示すよ
うな連続正弦波を発生させる。さらにトーンバースト波
発生器９によって図３に示すようなトーンバースト波を
発生させる。この正弦波信号と、トーンバースト波は、
それぞれ定常状態の性質と過渡状態の性質を持ってい
る。これらを音楽信号に例えると、正弦波信号はベース
の音、トーンバースト波はドラム等の打楽器やトランペ
ット等の金管楽器、さらにはギターなどの弦楽器、ピア
ノ等の鍵盤楽器の音に相当する。Next, the sine wave generator 8 generates a continuous sine wave as shown in FIG. Further, the tone burst wave generator 9 generates a tone burst wave as shown in FIG. This sine wave signal and tone burst wave are
Each has a steady state property and a transient state property. If these are compared to music signals, a sine wave signal corresponds to a bass sound, a tone burst wave corresponds to a percussion instrument such as a drum or a brass instrument such as a trumpet, a string instrument such as a guitar, or a keyboard instrument such as a piano.
【００１６】以上二種類のそれぞれ性質の異なる信号
は、ミキシング回路１０に入力され、ここで加算された
結果、図４に示されるような波形になる。そしてこの加
算された信号は、増幅器１１によって増幅され、スピー
カ１２を駆動する。このとき、スピーカ１２は図４に示
されたような信号に対応して駆動され、発せられた音は
音波として無響室１４内に伝搬する。この音波を音圧応
答としてマイクロホン１３で検出し、電気信号に変換し
て、計測用増幅器１５で増幅する。そして、この出力を
周波数分析器１６によって記録する。The above-mentioned two types of signals having different characteristics are input to the mixing circuit 10 and added together, resulting in a waveform as shown in FIG. The added signal is amplified by the amplifier 11 and drives the speaker 12. At this time, the speaker 12 is driven corresponding to the signal as shown in FIG. 4, and the emitted sound propagates as a sound wave into the anechoic chamber 14. This sound wave is detected by the microphone 13 as a sound pressure response, converted into an electric signal, and amplified by the measurement amplifier 15. Then, this output is recorded by the frequency analyzer 16.
【００１７】このようにしてスピーカの応答特性が測定
されるが、このようにして測定した結果は、従来の過渡
応答特性では測定できない特性、すなわち定常状態と過
渡状態を両方を含んだときの過渡応答特性を測定するこ
とが可能になる。The response characteristic of the loudspeaker is measured in this manner. The result of the measurement thus obtained is a characteristic that cannot be measured by the conventional transient response characteristic, that is, a transient state including both a steady state and a transient state. It becomes possible to measure the response characteristic.
【００１８】以上のように本実施例によれば、単一正弦
波を発生する正弦波発生器８と、トーンバースト波を発
生するトーンバースト波発生器９と、前記のそれぞれの
発生器の出力を合成するミキシング回路１０と、このミ
キシング回路１０の出力を増幅し、測定するスピーカ１
２に接続する増幅器１１と、前記スピーカ１２に対面し
て配置するマイクロホン１３と、このマイクロホン１３
の出力を増幅する計測用増幅器１５と、この計測用増幅
器１５に周波数分析器１６を接続することにより、スピ
ーカ１２の定常状態と過渡状態を両方を含んだときの応
答特性を測定することが可能になる。言い換えれば、人
間が実際に耳で聴いた結果と相関のあるスピーカの過渡
応答特性を測定することが可能になる。As described above, according to this embodiment, the sine wave generator 8 for generating a single sine wave, the tone burst wave generator 9 for generating a tone burst wave, and the outputs of the above-mentioned respective generators. And a speaker 1 for amplifying and measuring the output of the mixing circuit 10.
2, an amplifier 11 connected to 2, a microphone 13 arranged to face the speaker 12, and a microphone 13
It is possible to measure the response characteristic of the speaker 12 including both the steady state and the transient state by connecting the measurement amplifier 15 for amplifying the output of the speaker 12 and the frequency analyzer 16 to the measurement amplifier 15. become. In other words, it becomes possible to measure the transient response characteristic of the speaker, which correlates with the result actually heard by the human ear.
【００１９】[0019]
【発明の効果】以上の実施例の説明から明らかなように
本発明は、単一正弦波を発生する正弦波発生器と、トー
ンバースト波を発生するトーンバースト波発生器と、前
記のそれぞれの発生器の出力を合成するミキシング回路
と、このミキシング回路の出力を増幅し、測定するスピ
ーカに接続する増幅器と、このスピーカに対面して配置
するマイクロホンと、このマイクロホンの出力を増幅す
る計測用増幅器と、この計測用増幅器に周波数分析器に
より、人間が実際に耳で聴いた評価と相関のある定常状
態と過渡状態の両方の性質を含んだスピーカの応答特性
を測定することができるスピーカの測定装置を実現でき
るものである。As is apparent from the above description of the embodiments, the present invention provides a sine wave generator for generating a single sine wave, a tone burst wave generator for generating a tone burst wave, and each of the above. A mixing circuit that synthesizes the output of the generator, an amplifier that amplifies the output of this mixing circuit and that is connected to the speaker to be measured, a microphone that is arranged facing this speaker, and a measurement amplifier that amplifies the output of this microphone. And, by using a frequency analyzer in this measurement amplifier, it is possible to measure the response characteristics of the speaker including both the steady state and the transient state properties that correlate with the evaluation actually heard by the human ear. The device can be realized.
【図１】本発明の一実施例におけるスピーカの測定装置
の構成を示すブロック図FIG. 1 is a block diagram showing a configuration of a speaker measuring apparatus according to an embodiment of the present invention.
【図２】図１の正弦波発生器の出力信号波形図FIG. 2 is an output signal waveform diagram of the sine wave generator of FIG.
【図３】図１のトーンバースト波発生器の出力信号波形
図FIG. 3 is an output signal waveform diagram of the tone burst wave generator of FIG.
【図４】図１のミキシング回路の出力信号波形図4 is an output signal waveform diagram of the mixing circuit of FIG.
【図５】従来のスピーカの測定装置の構成を示すブロッ
ク図FIG. 5 is a block diagram showing a configuration of a conventional speaker measuring device.
【図６】図５の信号発生器の出力信号波形図6 is an output signal waveform diagram of the signal generator of FIG.
８ 正弦波発生器 ９ トーンバースト波発生器 １０ ミキシング回路 １１ 増幅器 １２ スピーカ １３ マイクロホン １４ 無響室 １５ 計測用増幅器 １６ 周波数分析器 8 Sine wave generator 9 Tone burst wave generator 10 Mixing circuit 11 Amplifier 12 Speaker 13 Microphone 14 Anechoic chamber 15 Measurement amplifier 16 Frequency analyzer
Claims (1)
ーンバースト波を発生するトーンバースト波発生器と、
前記正弦波発生器の出力と、前記トーンバースト波発生
器の出力を合成するミキシング回路と、このミキシング
回路の出力を増幅し、測定するスピーカに接続する増幅
器と、前記スピーカに対面して配置するマイクロホン
と、このマイクロホンの出力を増幅する計測用増幅器
と、この計測用増幅器に周波数分析器を接続して構成し
たスピーカの測定装置。1. A sine wave generator for generating a single sine wave, and a tone burst wave generator for generating a tone burst wave,
A mixing circuit that synthesizes the output of the sine wave generator and the output of the tone burst wave generator, an amplifier that amplifies the output of the mixing circuit, and is connected to a speaker to be measured, and is arranged facing the speaker. A microphone, a measuring amplifier that amplifies the output of the microphone, and a speaker measuring device configured by connecting a frequency analyzer to the measuring amplifier.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP734092A JPH0828920B2 (en) | 1992-01-20 | 1992-01-20 | Speaker measuring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP734092A JPH0828920B2 (en) | 1992-01-20 | 1992-01-20 | Speaker measuring device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH05199593A true JPH05199593A (en) | 1993-08-06 |
| JPH0828920B2 JPH0828920B2 (en) | 1996-03-21 |
Family
ID=11663214
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP734092A Expired - Lifetime JPH0828920B2 (en) | 1992-01-20 | 1992-01-20 | Speaker measuring device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0828920B2 (en) |
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-
1992
- 1992-01-20 JP JP734092A patent/JPH0828920B2/en not_active Expired - Lifetime
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| Publication number | Publication date |
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| JPH0828920B2 (en) | 1996-03-21 |
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