SU1697798A1 - Anti-noise ear-phones - Google Patents

Anti-noise ear-phones Download PDF

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Publication number
SU1697798A1
SU1697798A1 SU874338170A SU4338170A SU1697798A1 SU 1697798 A1 SU1697798 A1 SU 1697798A1 SU 874338170 A SU874338170 A SU 874338170A SU 4338170 A SU4338170 A SU 4338170A SU 1697798 A1 SU1697798 A1 SU 1697798A1
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SU
USSR - Soviet Union
Prior art keywords
vibrator
plate
partition
noise
receiver
Prior art date
Application number
SU874338170A
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Russian (ru)
Inventor
Николай Андреевич Мелешко
Виктор Архипович Федоров
Виталий Семенович Дидковский
Людмила Васильевна Дидковская
Георгий Николаевич Розоринов
Original Assignee
Киевский Политехнический Институт Им.50-Летия Великой Октябрьской Социалистической Революции
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Priority to SU874338170A priority Critical patent/SU1697798A1/en
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Publication of SU1697798A1 publication Critical patent/SU1697798A1/en

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Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F11/00—Methods or devices for treatment of the ears or hearing sense; Non-electric hearing aids; Methods or devices for enabling ear patients to achieve auditory perception through physiological senses other than hearing sense; Protective devices for the ears, carried on the body or in the hand
    • A61F11/06—Protective devices for the ears
    • A61F11/14—Protective devices for the ears external, e.g. earcaps or earmuffs
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
    • G10K11/00—Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
    • G10K11/16—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
    • G10K11/175—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general using interference effects; Masking sound
    • G10K11/178—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general using interference effects; Masking sound by electro-acoustically regenerating the original acoustic waves in anti-phase
    • G10K11/1785—Methods, e.g. algorithms; Devices
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
    • G10K11/00—Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
    • G10K11/16—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
    • G10K11/175—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general using interference effects; Masking sound
    • G10K11/178—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general using interference effects; Masking sound by electro-acoustically regenerating the original acoustic waves in anti-phase
    • G10K11/1785—Methods, e.g. algorithms; Devices
    • G10K11/17857—Geometric disposition, e.g. placement of microphones
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
    • G10K11/00—Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
    • G10K11/16—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
    • G10K11/175—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general using interference effects; Masking sound
    • G10K11/178—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general using interference effects; Masking sound by electro-acoustically regenerating the original acoustic waves in anti-phase
    • G10K11/1785—Methods, e.g. algorithms; Devices
    • G10K11/17861—Methods, e.g. algorithms; Devices using additional means for damping sound, e.g. using sound absorbing panels
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
    • G10K11/00—Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
    • G10K11/16—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
    • G10K11/175—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general using interference effects; Masking sound
    • G10K11/178—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general using interference effects; Masking sound by electro-acoustically regenerating the original acoustic waves in anti-phase
    • G10K11/1787—General system configurations
    • G10K11/17875—General system configurations using an error signal without a reference signal, e.g. pure feedback
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
    • G10K2210/00—Details of active noise control [ANC] covered by G10K11/178 but not provided for in any of its subgroups
    • G10K2210/10—Applications
    • G10K2210/108—Communication systems, e.g. where useful sound is kept and noise is cancelled
    • G10K2210/1081—Earphones, e.g. for telephones, ear protectors or headsets
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
    • G10K2210/00—Details of active noise control [ANC] covered by G10K11/178 but not provided for in any of its subgroups
    • G10K2210/30—Means
    • G10K2210/301—Computational
    • G10K2210/3011—Single acoustic input
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
    • G10K2210/00—Details of active noise control [ANC] covered by G10K11/178 but not provided for in any of its subgroups
    • G10K2210/30—Means
    • G10K2210/301—Computational
    • G10K2210/3013—Analogue, i.e. using analogue computers or circuits

Landscapes

  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Physics & Mathematics (AREA)
  • Multimedia (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Biomedical Technology (AREA)
  • Psychology (AREA)
  • Otolaryngology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Vascular Medicine (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Biophysics (AREA)
  • Soundproofing, Sound Blocking, And Sound Damping (AREA)

Description

1one

(21)433&170/14(21) 433 & 170/14

(22)02.12.87(22) 02.12.87

(46) 15.12.91. Бюл. №46(46) 12/15/91. Bul №46

(71)Киевский политехнический институт им. 50-лети  Великой Окт брьской социалистической революции(71) Kiev Polytechnic Institute. 50th anniversary of the Great Oct. Brno socialist revolution

(72)Н.А. Мелешко, В.А. Федоров. B.C. Дид- ковский, Л.В. Дидковскз  и Г.Н. Розоринов (53)615.472(088.8)(72) N.A. Meleshko, V.A. Fedorov. B.C. Didkovsky, L.V. Didkovskz and G.N. Rosorinov (53) 615.472 (088.8)

(56)Патент ФРГ № 2925134, кл. А 61 F 11/02, 1979.(56) Patent of Germany No. 2925134, cl. A 61 F 11/02, 1979.

(54) ПРОТИВОШУМНЫЕ НАУШНИКИ(54) BALANCED HEADPHONES

(57)Изобретение относитс  к средствам индивидуальной защиты и может быть использовано дл  защиты органа слуха человека от среднего воздействи  шумов повышенных(57) The invention relates to personal protective equipment and can be used to protect a person’s hearing organ from the average effect of increased noise.

уровней. С целью повышени  заглушающей способности противошумных наушников на пути следовани  звуковой волны между протектором и внутренней стенкой корпуса размещена механически св занна  с внутренней стенкой перегородка и разделенна  воздушным промежутком подвижна  упруга  пластина. На внутренней стороне перегородки, обращенной к подвижной пластине, установлен вибратор. Подвижный  корь вибратора и виброприемник прикреплены к подвижной пластине, а выход виброприемника подключен к входу вибратора через последовательно соединенные элемент фазовой коррекции и электронный усилитель.1 ил.levels. In order to increase the silencing capacity of the noise-canceling headphones in the path of the sound wave between the tread and the inner wall of the housing, a partition is mechanically connected to the inner wall and a movable elastic plate separated by an air gap. On the inner side of the partition facing the movable plate, a vibrator is installed. The movable measles of the vibrator and the vibro-receiver are attached to the movable plate, and the output of the vibro-receiver is connected to the input of the vibrator via series-connected phase-correction element and an electronic amplifier.1 Il.

I. I.

Изобретение относитс  к средствам индивидуальной защиты органов человека дл  вредных воздействий, и предназначено дл  защиты органа слуха человека от вредного воздействи  шумов повышенных уровней, и может быть применено в промышленности, во всех отрасл х народного хоз йства.The invention relates to the protection of human organs for harmful effects, and is intended to protect the human ear from the harmful effects of elevated noise levels, and can be applied in industry in all parts of the national economy.

Целью изобретени   вл етс  повышение заглушающей способности путем уменьшени  вредных акустических эффектов , воздействующих на орган слуха.The aim of the invention is to increase the silencing ability by reducing the detrimental acoustic effects acting on the organ of hearing.

На чертеже показаны наушники, разрез .The drawing shows headphones, cut.

Противошумный наушник состоит из наружной стенки 1, присоединенной к оголовью 2, и внутренней перегородки 3. На внутренней поверхности наружной стенки расположен звукопоглотитель 4, который может быть выполнен многослойным. ВнутслThe anti-noise earpiece consists of an outer wall 1 attached to the headband 2 and an internal partition 3. On the inner surface of the outer wall there is a sound absorber 4, which can be made multi-layered. Inside

сwith

ри наушника параллельно перегородке 3 установлена подвижна  платина 5. Между звукопоглотителем 4 и внутренней перегородкой 3 имеетс  воздушный зазор 6, а между перегородкой 3 и пластиной 5 - воздушный зазор 7. На торце корпуса по его периметру надет протектор 8. На внутренней стороне внутренней перегородки 3 установлен вибратор 9, св занный через электронный усилитель 10 и элемент 11 фазовой коррекции с виброприемником 12, установленным на подвижной пластине 5. Подвижный  корь 13 вибратора 9 тзкже,как и виброприемник 12 закреплен на подвижной пластине 5,A platinum 5 is mounted parallel to the partition 3 of the headphone. There is an air gap 6 between the sound absorber 4 and the internal partition 3, and between the partition 3 and the plate 5 there is an air gap 7. At the end of the case there is a tread 8 around the inside of the internal partition 3 a vibrator 9 connected via an electronic amplifier 10 and a phase-correction element 11 is installed with a vibrating receiver 12 mounted on a movable plate 5. Movable measles 13 of a vibrator 9 are tzkzhe, as well as a vibrating receiver 12 mounted on a movable plate Stina 5,

й Работа противошумных наушников осуществл етс  следующим образом.The operation of the antinoise headphones is as follows.

Внешн   звукова  волна воздействует на наружную стенку 1 корпуса, частично отOsThe external sound wave acts on the outer wall of the housing 1, partly from the OS

О XIAbout XI

ч юh y

0000

ража сь от него, частично демпфиру сь материалом стенки 1 м звукспоглотителем 4, а частично проход  в воздушный зазор 6, вызыва  колебани  внутренней перегородки 3. Далее через воздушный зазор 7 колебани  передаютс  на подвижную пластину 5. Виброприемник 12, установленный на подвижной пластине 5, вырабатывает сигнал, который поступает на элемент 11 фазовой коррекции (например, если в качестве приемника используетс  пьезоэлеиеит, то в качестве элемента 11 может быть выбран интегратор), затем на электронный усилитель 10. Сигнал, усиленный усилителем 10, подаетс  на вибратор 9. В качестве вибратора 9 может быть применен, например, электромагнит, корпус которого жестко укреплен на внутренней стороне перегородки 3. обращенной к пластине 5. Подвижный  корь 13 электромагнита (вибратора) прикрепл етс  также к подвижной пластине 5. Сигнал, снимаемый с усилител  10, вызывает возвратно-поступательные движени   кор  13, а, следовательно, и подвижной пластины 5. При этом с помощью элемента 11 фазовой коррекции и усилител  10 формируетс  управл ющий сигнал такого вида, чтобы компенсировать воздействие мешающего шума (уменьшить по амплитуде сигнал виброприемника). Дл  того, чтобы на эффективность шумоглушенин не вли ло месторасположение вибратора 12, подвижкойcrumble from it, partially damping the wall material 1 m with a sound absorber 4, and partially passing into the air gap 6, causing the internal partition 3 to oscillate. Then, through the air gap 7, the vibrations are transmitted to the moving plate 5. The vibration receiver 12 mounted on the moving plate 5, generates a signal that arrives at phase correction element 11 (for example, if piezoelectric is used as receiver, then integrator can be selected as element 11), then at electronic amplifier 10. Signal amplified The element 10 is supplied to the vibrator 9. As the vibrator 9, for example, an electromagnet can be used, the body of which is rigidly fixed on the inner side of the partition 3. facing the plate 5. The movable measles 13 of the electromagnet (vibrator) are also attached to the movable plate 5. The signal taken from amplifier 10 causes the reciprocating motion of the core 13, and, consequently, the moving plate 5. With the help of phase correction element 11 and amplifier 10, a control signal of this type is formed to compensate for the effects no interfering noise (reduce the amplitude of the vibration detector signal). To ensure that the effectiveness of the noise suppressor is not affected by the location of the vibrator 12, the

пластине 5 придают высокую изгибную жесткость . В этом случае пластина 5 работает как акустический поршень в режиме малых колебаний относительно равновесного положени , особенно эффективно на ншких и инфранизких частотах.plate 5 is given high flexural rigidity. In this case, the plate 5 works as an acoustic piston in the mode of small oscillations relative to the equilibrium position, especially effectively at low and infra-low frequencies.

Благодар  тому, что, стенки корпуса колеблютс  как не защемленные по периметру , т.е. при их жесткости - как одно целое,Due to the fact that, the walls of the housing oscillate as they are not clamped along the perimeter, i.e. with their rigidity - as one,

то внутренн   перегородка 3 и подвижна  пластина 5 благодар  предложенной св зи будут большей частью площади колебатьс  друг навстречу другу, что приведет к максимальному заглушению прошедших черезthen the internal partition 3 and the movable plate 5, due to the proposed communication, will for the most part of the area oscillate towards each other, which will lead to maximum silencing of the people who have passed through

корпус звуковых колебаний.case of sound vibrations.

Claims (1)

Формула изобретени  Противошумные наушники, содержащие корпус с оголовьем, звукоприемник, фазоинвертер, электронный усилитель и излучатель , отличающиес  тем, что, с целью повышени  заглушающей способности путем уменьшени  вредных акустических эффектов, воздействующих на орган слуха, в корпусе имеетс  перегородка и упруга  пластина, установленные с зазором и жестко св занные между собой, причем пе- рфгородка снабжена вибратором, подвижный  корь которого и шлброприемник закреплены на пластине, а выход виброприемника подключен к входу вибратора через последовательно соединенные фазоинвертер и электронный усилитель.Claims of the Anti-Noise Headphones, comprising a body with a headband, a sound receiver, a phase inverter, an electronic amplifier and an emitter, characterized in that, in order to increase the damping ability by reducing the harmful acoustic effects acting on the organ of hearing, there is a partition and elastic plate in the housing installed with a gap and rigidly connected to each other, and the perforodka is equipped with a vibrator, the movable measles of which and the sand receiver are fixed on the plate, and the output of the vibropriemer is connected to the input the vibrator through a series-connected phase inverter and an electronic amplifier.
SU874338170A 1987-12-02 1987-12-02 Anti-noise ear-phones SU1697798A1 (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1994017513A1 (en) * 1993-01-29 1994-08-04 Active Noise And Vibration Technologies, Inc. Earpiece for active noise cancelling headset

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1994017513A1 (en) * 1993-01-29 1994-08-04 Active Noise And Vibration Technologies, Inc. Earpiece for active noise cancelling headset

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