RU2078462C1 - METHOD FOR MONITORING SOUND-CONDUCTING PRODUCTS ON THE QUALITY OF SOUND TRANSFER AND DEVICE FOR ITS IMPLEMENTATION - Google Patents

METHOD FOR MONITORING SOUND-CONDUCTING PRODUCTS ON THE QUALITY OF SOUND TRANSFER AND DEVICE FOR ITS IMPLEMENTATION Download PDF

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Publication number
RU2078462C1
RU2078462C1 RU93034582/28A RU93034582A RU2078462C1 RU 2078462 C1 RU2078462 C1 RU 2078462C1 RU 93034582/28 A RU93034582/28 A RU 93034582/28A RU 93034582 A RU93034582 A RU 93034582A RU 2078462 C1 RU2078462 C1 RU 2078462C1
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RU
Russia
Prior art keywords
sound
acoustic
signal
quality
conducting
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RU93034582/28A
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Russian (ru)
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RU93034582A (en
Inventor
И.В. Коновалов
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Коновалов Игорь Владимирович
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Priority to RU93034582/28A priority Critical patent/RU2078462C1/en
Publication of RU93034582A publication Critical patent/RU93034582A/en
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Publication of RU2078462C1 publication Critical patent/RU2078462C1/en

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Abstract

1. Способ контроля звукопроводящих изделий на качество звукопередачи, заключающийся в преобразовании двух испытательных электрических синусоидальных сигналов заданных частот fи fв комбинационный электрический испытательный сигнал, подачи его на вход акустического излучателя, преобразовании комбинационного электрического испытательного сигнала в акустический испытательный сигнал, передачу акустического испытательного сигнала через испытываемое звукопроводящее изделие, преобразование прошедшего через испытываемое звукопроводящее изделие акустического сигнала в электрический, выделение из него высокочастотных составляющих и по их величине определение качества звукопередачи испытываемого звукопроводящего изделия, отличающийся тем, что в комбинационном электрическом сигнале подавляют высокочастотные составляющие, а уровень звукового давления акустического испытательного сигнала поддерживают постоянным и равным максимально допустимому для данного вида испытываемых звукопроводящих изделий.2. Способ по п. 1, отличающийся тем, что подавление высокочастотных составляющих в комбинационном электрическом сигнале производят для частотбольших сумм частот двух испытательных синусоидальных сигналов (f+f), но меньших частотыначиная с которой производят выделение высокочастотных составляющих для оценки качества звукопередачи:3. Устройство для контроля звукопроводящих изделий на качество звукопередачи, содержащее два генератора синусоидального напряжения с заданными частотами fи f, выходы которых подключены через трансформатор со средней точкой к излучателю акустического сигнала, приемник акуст�1. A method for monitoring sound-conducting products for the quality of sound transmission, which consists in converting two test electrical sinusoidal signals of specified frequencies f and f into a combinational electrical test signal, feeding it to the input of an acoustic emitter, converting a combinational electrical test signal into an acoustic test signal, transmitting an acoustic test signal through a test signal sound-conducting product, the transformation of the acoustic signal passed through the tested sound-conducting product into an electrical signal, the separation of high-frequency components from it and, according to their magnitude, the determination of the sound transmission quality of the sound-conducting product under test, characterized in that high-frequency components are suppressed in the combination electrical signal, and the sound pressure level of the acoustic test signal is maintained constant and equal to the maximum allowable for a given type of tested sound-conducting products. 2. The method according to claim 1, characterized in that the suppression of high-frequency components in the combination electrical signal is performed for frequencies of large sums of frequencies of two test sinusoidal signals (f + f), but lower frequencies, starting from which high-frequency components are extracted to assess the quality of sound transmission: 3. A device for monitoring sound-conducting products for the quality of sound transmission, containing two sinusoidal voltage generators with specified frequencies f and f, the outputs of which are connected through a transformer with a midpoint to an acoustic signal emitter, an acoustic receiver

RU93034582/28A 1993-07-01 1993-07-01 METHOD FOR MONITORING SOUND-CONDUCTING PRODUCTS ON THE QUALITY OF SOUND TRANSFER AND DEVICE FOR ITS IMPLEMENTATION RU2078462C1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
RU93034582/28A RU2078462C1 (en) 1993-07-01 1993-07-01 METHOD FOR MONITORING SOUND-CONDUCTING PRODUCTS ON THE QUALITY OF SOUND TRANSFER AND DEVICE FOR ITS IMPLEMENTATION

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
RU93034582/28A RU2078462C1 (en) 1993-07-01 1993-07-01 METHOD FOR MONITORING SOUND-CONDUCTING PRODUCTS ON THE QUALITY OF SOUND TRANSFER AND DEVICE FOR ITS IMPLEMENTATION

Publications (2)

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RU93034582A RU93034582A (en) 1996-01-20
RU2078462C1 true RU2078462C1 (en) 1997-04-27

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Application Number Title Priority Date Filing Date
RU93034582/28A RU2078462C1 (en) 1993-07-01 1993-07-01 METHOD FOR MONITORING SOUND-CONDUCTING PRODUCTS ON THE QUALITY OF SOUND TRANSFER AND DEVICE FOR ITS IMPLEMENTATION

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RU (1) RU2078462C1 (en)

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