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RU2015118424A - METHOD FOR DETERMINING ACOUSTIC FREQUENCY CHARACTERISTICS OF SOUND-ABSORBING CONSTRUCTIONS - Google Patents

METHOD FOR DETERMINING ACOUSTIC FREQUENCY CHARACTERISTICS OF SOUND-ABSORBING CONSTRUCTIONS Download PDF

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Publication number
RU2015118424A
RU2015118424A RU2015118424A RU2015118424A RU2015118424A RU 2015118424 A RU2015118424 A RU 2015118424A RU 2015118424 A RU2015118424 A RU 2015118424A RU 2015118424 A RU2015118424 A RU 2015118424A RU 2015118424 A RU2015118424 A RU 2015118424A
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RU
Russia
Prior art keywords
sound
frequency characteristics
reflected
absorbing
signal
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RU2015118424A
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Russian (ru)
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RU2606172C2 (en
Inventor
Валерий Юрьевич Гарин
Владимир Маркович Стефанский
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Российская Федерация, От Имени Которой Выступает Министерство Промышленности И Торговли Российской Федерации
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Priority to RU2015118424A priority Critical patent/RU2606172C2/en
Publication of RU2015118424A publication Critical patent/RU2015118424A/en
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Publication of RU2606172C2 publication Critical patent/RU2606172C2/en

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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01H—MEASUREMENT OF MECHANICAL VIBRATIONS OR ULTRASONIC, SONIC OR INFRASONIC WAVES
    • G01H17/00—Measuring mechanical vibrations or ultrasonic, sonic or infrasonic waves, not provided for in the preceding groups

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Investigating Or Analyzing Materials By The Use Of Ultrasonic Waves (AREA)
  • Circuit For Audible Band Transducer (AREA)

Abstract

Способ определения акустических частотных характеристик звукопоглощающих конструкций в помещениях ограниченных волновых размеров, включающий формирование и излучение широкополосного зондирующего сигнала, прием отраженных сигналов, выделение сигнала, отраженного от звукопоглощающей конструкции, и регистрацию его уровня, отличающийся тем, что дополнительно осуществляют сжатие принимаемого сигнала во времени при помощи дисперсионной задержки и после выделения сформированного импульсного сигнала, отраженного от звукопоглощающей конструкции, восстанавливают непрерывную форму выделяемого отраженного сигнала путем обратной дисперсионной задержки, после чего рассчитывают акустические частотные характеристики звукопоглощающей конструкции.A method for determining the acoustic frequency characteristics of sound-absorbing structures in rooms of limited wave sizes, including generating and emitting a broadband sounding signal, receiving reflected signals, extracting a signal reflected from the sound-absorbing structure, and recording its level, characterized in that it further compresses the received signal in time at help dispersion delay and after highlighting the generated pulse signal reflected from the sound absorbing to For instructions, reduced form continuous signal emitted by the reflected feedback delay dispersion, and then calculated the acoustic frequency characteristics of the acoustic structure.

Claims (1)

Способ определения акустических частотных характеристик звукопоглощающих конструкций в помещениях ограниченных волновых размеров, включающий формирование и излучение широкополосного зондирующего сигнала, прием отраженных сигналов, выделение сигнала, отраженного от звукопоглощающей конструкции, и регистрацию его уровня, отличающийся тем, что дополнительно осуществляют сжатие принимаемого сигнала во времени при помощи дисперсионной задержки и после выделения сформированного импульсного сигнала, отраженного от звукопоглощающей конструкции, восстанавливают непрерывную форму выделяемого отраженного сигнала путем обратной дисперсионной задержки, после чего рассчитывают акустические частотные характеристики звукопоглощающей конструкции. A method for determining the acoustic frequency characteristics of sound-absorbing structures in rooms of limited wave sizes, including generating and emitting a broadband sounding signal, receiving reflected signals, extracting a signal reflected from the sound-absorbing structure, and recording its level, characterized in that it further compresses the received signal in time at help dispersion delay and after highlighting the generated pulse signal reflected from the sound absorbing to For instructions, reduced form continuous signal emitted by the reflected feedback delay dispersion, and then calculated the acoustic frequency characteristics of the acoustic structure.
RU2015118424A 2015-05-18 2015-05-18 Method of determining acoustic frequency characteristics of sound-absorbing structures RU2606172C2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
RU2015118424A RU2606172C2 (en) 2015-05-18 2015-05-18 Method of determining acoustic frequency characteristics of sound-absorbing structures

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Application Number Priority Date Filing Date Title
RU2015118424A RU2606172C2 (en) 2015-05-18 2015-05-18 Method of determining acoustic frequency characteristics of sound-absorbing structures

Publications (2)

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RU2015118424A true RU2015118424A (en) 2016-12-10
RU2606172C2 RU2606172C2 (en) 2017-01-10

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Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3484586D1 (en) * 1983-08-24 1991-06-20 Cgr Ultrasonic METHOD FOR MEASURING FLOW PARAMETERS OF A FLOWABLE MEDIUM AND DEVICE FOR CARRYING OUT THIS METHOD.
DE3865034D1 (en) * 1987-02-09 1991-10-31 Matsushita Electric Industrial Co Ltd ULTRASONIC EXAMINATION DEVICE.
JP3329224B2 (en) * 1997-03-15 2002-09-30 ヤマハ株式会社 Acoustic characteristics measurement device
JP5876311B2 (en) * 2012-01-27 2016-03-02 地方独立行政法人東京都立産業技術研究センター Sound absorption coefficient measuring device, sound absorption coefficient measuring method, and sound absorption coefficient measuring program
RU2525701C1 (en) * 2012-12-29 2014-08-20 Федеральное государственное унитарное предприятие "Крыловский государственный научный центр" Method to suppress reverberation interference

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MM4A The patent is invalid due to non-payment of fees

Effective date: 20180519

NF4A Reinstatement of patent

Effective date: 20200911