WO2013172240A1 - Moyen de mesure et moyen d'ajustement d'un effet sonore - Google Patents

Moyen de mesure et moyen d'ajustement d'un effet sonore Download PDF

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Publication number
WO2013172240A1
WO2013172240A1 PCT/JP2013/062994 JP2013062994W WO2013172240A1 WO 2013172240 A1 WO2013172240 A1 WO 2013172240A1 JP 2013062994 W JP2013062994 W JP 2013062994W WO 2013172240 A1 WO2013172240 A1 WO 2013172240A1
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WO
WIPO (PCT)
Prior art keywords
level
standard curve
measurement
curve
unit
Prior art date
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PCT/JP2013/062994
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English (en)
Japanese (ja)
Inventor
谷口進
Original Assignee
Taniguchi Susumu
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.)
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Publication date
Application filed by Taniguchi Susumu filed Critical Taniguchi Susumu
Publication of WO2013172240A1 publication Critical patent/WO2013172240A1/fr

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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01H—MEASUREMENT OF MECHANICAL VIBRATIONS OR ULTRASONIC, SONIC OR INFRASONIC WAVES
    • G01H3/00—Measuring characteristics of vibrations by using a detector in a fluid
    • G01H3/10—Amplitude; Power
    • G01H3/14—Measuring mean amplitude; Measuring mean power; Measuring time integral of power
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03G—CONTROL OF AMPLIFICATION
    • H03G3/00—Gain control in amplifiers or frequency changers
    • H03G3/20—Automatic control
    • H03G3/30—Automatic control in amplifiers having semiconductor devices
    • H03G3/32—Automatic control in amplifiers having semiconductor devices the control being dependent upon ambient noise level or sound level

Definitions

  • the present invention relates to measurement and analysis of a detected electric signal, and measurement and sound effect adjustment that require conversion from a measured value using a standard curve.
  • control is performed based on the sound pressure level by directly using the detected electrical signal as a control signal.
  • control that reacts sensitively to a low frequency signal having a large level is required. Therefore, it is necessary to adjust the detected electric signal with a filter or an equalizer.
  • a measuring means or a sound effect adjusting means which is configured by adding a function of an “inverse characteristic filter” and a function of “unit conversion calculation” to a functional configuration of a general measuring method, is used. That is.
  • the measurement means is a measurement means for obtaining a measurement result in units of a standard curve (auditory level, NC level) in the present invention, whereas the measurement result of the conventional measurement means is a unit of sound pressure level.
  • FIG. 1 and FIG. 2 are measurements in which the frequency distribution of the auditory level is measured / analyzed by the measuring means of the present invention.
  • FIG. 1 shows a configuration in which individual functions are combined in an analog manner, etc.
  • FIG. It shows how the configuration and signals change using the arithmetic function.
  • FIG. 3 shows a state of change in configuration and signal, in which individual functions are combined in the measurement of measuring and analyzing the NC level frequency distribution by the measuring means of the present invention.
  • FIG. 4 shows a configuration by the control at the auditory level in which individual functions are combined in the limiter compressor by the acoustic effect adjusting means of the present invention.
  • a signal of “standard curve or approximate curve of standard curve” (hereinafter abbreviated as standard curve) as an input signal, and a signal on the same standard curve at the output is the level of each standard curve.
  • standard curve standard curve or approximate curve of standard curve
  • the unit With the horizontal line, the unit can be converted from the sound pressure level to the standard curve unit (auditory level, NC level).
  • the function of the “inverse characteristic filter” is to convert a standard curve (absolute level) as an input signal into a “curve of change with respect to a reference curve (hereinafter abbreviated as a reference curve)”.
  • a reference curve a “curve of change with respect to a reference curve”.
  • One of the standard curves composed of curved lines has an inverse characteristic and is configured as a single filter (FIGS. 1 and 3), and the calculation to the output value of a general measurement method (FIG. 2).
  • the reference curve is extracted from the ISO 226: 2003 standard curve, and the reference curve is extracted from the NC standard curve in FIG. 6, 14, and 18) are used.
  • unit conversion calculation is to subtract the “sound pressure level value of the reference point (1 kHz) of the reference curve (60 for auditory level measurement, approximately 40 for NC measurement)” from the filter output signal.
  • 0 dB to convert to “curve of difference from reference curve (relative level)” and “curve of difference from reference curve” multiplied by “unit conversion constant” to obtain “curve in the same standard curve unit”
  • the unit conversion constant is calculated by calculating “reference change width ⁇ individual change width” by obtaining a change width (FIGS. 9, 12, 15, and 19) from the level for each measurement point of the two curves in the standard curve. It is a constant for each measurement point to be obtained.
  • a level meter based on the standard curve unit that indicates the maximum value in the standard curve unit in the entire signal can be configured.
  • the measurement means can output the measurement result in “standard curve units” such as an auditory level for an auditory level measurement and an NC level for an NC level measurement.
  • the sound effect adjustment means can control sound effect adjustment according to the auditory level.
  • the configuration of individual functions and the state of signal change are shown.
  • the auditory level measurement as one embodiment of the present invention shows a configuration in which an inverse characteristic filter and unit conversion calculation are collectively performed and a signal change state.
  • the state of the signal change is shown by comparing the configuration of the individual functions with the standard curve and the approximate curve of the standard curve.
  • a configuration of auditory level control with individual functions is shown in a limiter compressor of sound effect adjusting means.
  • a standard curve obtained by extracting a part of a curve from ISO 226: 2003 as an input signal is shown.
  • the frequency characteristic of the 60-Phons inverse characteristic filter is shown.
  • the frequency characteristic of the output of the reverse characteristics filter of 60Phons is shown.
  • the frequency characteristics are shown with the reference standard curve of 60 Phones set to 0 dB.
  • Explains how to determine the unit conversion constant for auditory level measurement The frequency characteristic after calculating by the unit conversion constant in auditory level measurement is shown.
  • the frequency characteristic of the output in the auditory level measurement as one of the Examples of this invention is shown.
  • An NC standard curve as an input signal is shown.
  • the frequency characteristic of the inverse characteristic filter of NC-40 is shown.
  • the frequency characteristics when the reference standard curve of NC-40 is 0 dB are shown.
  • the frequency characteristic of the output in NC level measurement as one of the embodiments of the present invention is shown.
  • An approximate curve of an NC standard curve as an input signal is shown.
  • the frequency characteristic of the inverse characteristic filter of the reference approximate standard curve of NC-40 is shown.
  • the frequency characteristics with the reference approximate standard curve set to 0 dB are shown.
  • the frequency characteristic of the output by a standard approximate curve is shown by NC level measurement as one of the embodiments of the present invention.
  • 226 Shows a proportional relationship between the sound pressure level and the auditory level in frequency units of the standard curve.
  • the proportional relationship between the auditory level and the sound pressure level in the frequency unit of the NC standard curve is shown.
  • the difference between the NC standard curve and the approximate curve of the NC standard curve is shown.
  • 226: 2003 shows a loudness curve.
  • An NC standard curve is shown.
  • Configures the present invention by adding the functions of “inverse characteristic filter” and “unit conversion calculation” that can be performed with conventional technology to measurement / analysis devices and sound effect adjustment devices using general analog and digital technologies. I can do it.
  • FIG. 1 is a configuration diagram as one example of an embodiment of an analog type measuring means of the present invention.
  • FIG. 2 is a configuration diagram as one embodiment of the measuring means using the digital technology of the present invention.
  • FIG. 3 is a configuration diagram as one embodiment of the NC measuring means of the present invention.
  • FIG. 4 is a configuration diagram as one example of the acoustic effect adjusting means of the present invention.
  • the potential for industrial use is in the measurement field that requires conversion using the standard curve from the measured value in the measurement and analysis of the detected electrical signal, and in the control field of acoustic effect adjustment such as limiter compressors and automatic volume control. is there.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Measurement Of Mechanical Vibrations Or Ultrasonic Waves (AREA)
  • Tone Control, Compression And Expansion, Limiting Amplitude (AREA)

Abstract

[Problème] Lors d'une mesure/analyse classique faisant appel à une courbe étalon, il est nécessaire de convertir le résultat de mesure au moyen d'une courbe étalon. En outre, lors d'un ajustement classique d'un effet sonore, en raison de la mise en œuvre d'un réglage en termes d'unités de niveau de pression sonore, afin d'utiliser directement le signal électrique détecté comme signal de commande, un ajustement doit être réalisé au moyen, par exemple, d'un filtre ou d'un égaliseur. [Solution] Grâce à l'ajout d'un « filtre caractéristique inversé » et d'un « calcul de conversion d'unité » au schéma fonctionnel d'un procédé de mesure classique, par exemple lors de la mesure d'un niveau d'audition, les résultats de la mesure peuvent être obtenus dans des unités de courbe étalon, par exemple d'un niveau d'audition, ou lors de la mesure d'un niveau NC, ils peuvent être obtenus dans des unités de courbe étalon, par exemple d'un niveau NC, et/ou l'ajustement d'un effet sonore peut être réglé en termes de niveau d'audition.
PCT/JP2013/062994 2012-05-17 2013-05-09 Moyen de mesure et moyen d'ajustement d'un effet sonore WO2013172240A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2012-113300 2012-05-17
JP2012113300A JP5146861B1 (ja) 2012-05-17 2012-05-17 測定手段と音響効果調整手段

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WO2013172240A1 true WO2013172240A1 (fr) 2013-11-21

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Families Citing this family (1)

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Publication number Priority date Publication date Assignee Title
CN104575487A (zh) * 2014-12-11 2015-04-29 百度在线网络技术（北京）有限公司 一种语音信号的处理方法及装置

Citations (6)

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Publication number Priority date Publication date Assignee Title
JPH0541626A (ja) * 1991-08-05 1993-02-19 Matsushita Electric Ind Co Ltd 音量調整装置
JPH0740685B2 (ja) * 1986-07-23 1995-05-01 株式会社日立製作所 可聴音信号伝送システム
JPH1188088A (ja) * 1997-06-11 1999-03-30 Lg Electron Inc 自動音量補正方法及びその装置
JPH11337397A (ja) * 1998-05-27 1999-12-10 Nippon Hoso Kyokai <Nhk> 音量指示装置
JP2001147693A (ja) * 1999-11-19 2001-05-29 Takahiro Yamashita 音再生装置における再生出力の補正方法
JP4456538B2 (ja) * 2005-04-15 2010-04-28 日本放送協会 ポストプロダクション用ラウドネスレベルメータおよびポストプロダクション用ラウドネスレベル算出プログラム

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0740685B2 (ja) * 1986-07-23 1995-05-01 株式会社日立製作所 可聴音信号伝送システム
JPH0541626A (ja) * 1991-08-05 1993-02-19 Matsushita Electric Ind Co Ltd 音量調整装置
JPH1188088A (ja) * 1997-06-11 1999-03-30 Lg Electron Inc 自動音量補正方法及びその装置
JPH11337397A (ja) * 1998-05-27 1999-12-10 Nippon Hoso Kyokai <Nhk> 音量指示装置
JP2001147693A (ja) * 1999-11-19 2001-05-29 Takahiro Yamashita 音再生装置における再生出力の補正方法
JP4456538B2 (ja) * 2005-04-15 2010-04-28 日本放送協会 ポストプロダクション用ラウドネスレベルメータおよびポストプロダクション用ラウドネスレベル算出プログラム

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* Cited by examiner, † Cited by third party
Title
KOICHI KUROZUMI: "Atarashii To Loudness Kyokusen ni Motozuita Loudness Level Meter no Kaihatsu", REPORT OF THE MEETING, THE ACOUSTICAL SOCIETY OF JAPAN, vol. 2004, 21 September 2004 (2004-09-21), pages 495 - 496 *
KOICHI KUROZUMI: "Loudness Level Meter no Kaihatsu to Kikakuka no Doko", THE MOTION PICTURE & TV ENGINEERING, vol. 624, 1 August 2004 (2004-08-01), pages 37 - 40 *

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JP5146861B1 (ja) 2013-02-20

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