WO2023286026A1 - Haut-parleur - Google Patents

Haut-parleur Download PDF

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Publication number
WO2023286026A1
WO2023286026A1 PCT/IB2022/056537 IB2022056537W WO2023286026A1 WO 2023286026 A1 WO2023286026 A1 WO 2023286026A1 IB 2022056537 W IB2022056537 W IB 2022056537W WO 2023286026 A1 WO2023286026 A1 WO 2023286026A1
Authority
WO
WIPO (PCT)
Prior art keywords
horn
heads
midrange
throat
loudspeaker
Prior art date
Application number
PCT/IB2022/056537
Other languages
English (en)
Russian (ru)
Inventor
Роландс ЯНЕВИЧС
Original Assignee
БОГУСЛАВСКИЙ, Евгений
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.)
Filing date
Publication date
Priority claimed from RU2021121100A external-priority patent/RU2778444C1/ru
Application filed by БОГУСЛАВСКИЙ, Евгений filed Critical БОГУСЛАВСКИЙ, Евгений
Publication of WO2023286026A1 publication Critical patent/WO2023286026A1/fr

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R1/00—Details of transducers, loudspeakers or microphones
    • H04R1/20—Arrangements for obtaining desired frequency or directional characteristics
    • H04R1/22—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired frequency characteristic only 
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R1/00—Details of transducers, loudspeakers or microphones
    • H04R1/20—Arrangements for obtaining desired frequency or directional characteristics
    • H04R1/22—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired frequency characteristic only 
    • H04R1/30—Combinations of transducers with horns, e.g. with mechanical matching means, i.e. front-loaded horns
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R1/00—Details of transducers, loudspeakers or microphones
    • H04R1/20—Arrangements for obtaining desired frequency or directional characteristics
    • H04R1/32—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only
    • H04R1/34—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only by using a single transducer with sound reflecting, diffracting, directing or guiding means

Definitions

  • the invention relates to sound-reproducing devices, and in particular to loudspeakers.
  • Loudspeakers are known, in which, in order to obtain a wide frequency response, several radiating heads operating in different frequency ranges are used. To improve the compactness of the loudspeaker and to approach the ideal point source of sound, several radiating heads are loaded onto one horn.
  • the known loudspeaker US8284976B2 contains a horn, one high-frequency (HF) sound reproducing head and four mid-frequency (MF) sound reproducing heads loaded on a common horn.
  • the HF head is loaded on the throat of the horn
  • the MF heads are loaded on holes made in the side surface of the horn.
  • the aim of the invention is to reduce the mutual influence of sound reproducing heads when they work together in a loudspeaker, improve the frequency and spatial characteristics of the loudspeaker and improve the sound quality.
  • Another object of the invention is to obtain a circular speaker pattern in the vertical plane, i.e. in a plane perpendicular to the loudspeaker radiation axis.
  • a loudspeaker containing: a horn having a throat, side surface, and mouth, as well as holes made in the side surface of the horn; one HF head loaded on the throat of the horn; and several midrange heads loaded on holes made in the side surface of the horn, while the horn is additionally equipped with reflective petals made on the side surface of the horn, covering these holes from the throat of the horn, and re-reflecting the radiation of the midrange heads to the edge of the mouth of the horn.
  • the mouth of the horn is in the form of a circle. This shape of the horn and the mouth allows you to get the most uniform radiation in all directions from the axis of the horn.
  • the petals are installed in such a way that the total radiation pattern of the midrange heads at the crossover frequency has the shape of a ring.
  • Such a total directional pattern of the midrange heads is best consistent with the directional pattern of the HF head, which has the shape of a circle.
  • the reflective petals have a convex shape. This shape of the petal allows you to more evenly re-reflect the radiation of the midrange head to the edge of the mouth of the horn.
  • the loudspeaker comprises four midrange drivers.
  • Four midrange heads allow you to get a fairly uniform radiation pattern in the frontal plane, in addition, four midrange heads fit comfortably into the rectangular loudspeaker housing.
  • the side surface of the horn has a convex shape. This shape of the horn provides better matching of the radiation of the HF head with the radiation of the midrange heads.
  • the midrange heads are located in the upper part of the horn, near its mouth.
  • the distance 1 along the axis of the horn from its throat to the holes in the side surface of the horn on which the midrange heads are loaded is at least half the height h of the horn, and preferably at least three-fourths of the height h of the horn. This arrangement of holes, which are loaded with midrange heads, allows you to space the high-frequency and midrange heads from each other at a sufficient distance.
  • Fig. 1 general view of the loudspeaker
  • Fig. 2 loudspeaker in section along the AA line
  • Fig. 3 loudspeaker in section along the BB line
  • Fig. 4 acoustic radiation of the loudspeaker at the crossover frequency
  • High-frequency (HF) head a high-frequency sound reproducing head, this is an electro-acoustic transducer capable of reproducing the upper part of the middle frequencies and upper frequencies, usually from 600 Hz to 20 kHz;
  • MF head mid-frequency (MF) head
  • MF head a mid-frequency sound reproducing head
  • this is an electro-acoustic transducer capable of reproducing low frequencies and the lower part of medium frequencies, usually from 40 Hz to 3 kHz;
  • FIG. 1 shows a General view of the loudspeaker.
  • FIG. 2-3 shows the same loudspeaker without the housing in section.
  • the loudspeaker comprises a housing 1, a horn 2 installed in the housing 1, one treble head 7 loaded on the throat 3 of the horn and four midrange heads 8 loaded on holes 6 made in the side surface 4 of the horn.
  • Figure 1 shows a loudspeaker with four midrange heads, however, the number of midrange heads may be more than four, for example, five or six.
  • the high-frequency head radiates in the range from about 1.2 kHz to 20 kHz, and the mid-range head in the range from 40 Hz to 1.2 kHz.
  • the crossover frequency is 1.2 kHz. When using other heads, the crossover frequency may also be different.
  • reflective petals 9 are made, which close the holes 6, on which the midrange heads 8 are loaded, from the side of the throat 3 of the horn and re-reflect the radiation of the midrange heads 8 to the edge of the mouth 5 of the horn.
  • the number of reflective petals 9 corresponds to the number of midrange heads 8.
  • the reflective petals 9 not only cover the midrange heads 8 from the side of the high-frequency head 7, but also close the midrange heads 8 from each other, thereby reducing the negative mutual influence of the midrange heads 8 on each other and on RF head 7.
  • the reflective petals 9 close the holes 6 not only from the side of the throat 3 of the horn, but also from the sides, thereby reducing the mutual influence of the midrange heads on each other.
  • the midrange heads 8 are located at the same level along the height of the horn 2, and are evenly distributed along the perimeter of the horn 2, thus, at the crossover frequency, the radiation of the high-frequency head 7, if you look at the loudspeaker from the front, has the shape of a circle, and the total radiation of the midrange heads 8 has the shape rings located around the perimeter of this circle.
  • the level of the holes 6 is chosen so that the distance 1 along the axis of the horn from its throat to the holes in the side surface of the horn on which the midrange heads are loaded is at least half the height h of the horn. More it is desirable that the distance 1 is at least three-fourths of the height h. This arrangement of holes, which are loaded with midrange heads, allows you to spread the high-frequency and midrange heads from each other at a sufficient distance.
  • FIG. 4 shows the result of a computer program simulation of the radiation of such a loudspeaker at the crossover frequency.
  • the radiation of the HF and MF heads merge into a common sound wave.
  • this fusion results in a significant reduction in interference distortion compared to traditional horn loudspeakers.
  • FIG. 5 shows the loudspeaker horn 2 separately.
  • the horn 2 is made of plastic in the form of a single product containing both the horn and reflective petals 9, as well as seats for sound emitting heads and fastening elements of the horn to the loudspeaker body.
  • the junction of the reflective petals with the side wall of the horn, the edges of the holes on which the midrange heads are loaded, and the edges of the petals have a streamlined shape.
  • the loudspeaker in a bass-reflex cabinet with a built-in 250W power amplifier has dimensions of 32x32x32 cm.
  • 1 is the distance from the mouth of the horn to the hole.

Landscapes

  • Health & Medical Sciences (AREA)
  • Otolaryngology (AREA)
  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Obtaining Desirable Characteristics In Audible-Bandwidth Transducers (AREA)

Abstract

L'invention concerne un haut-parleur comprenant: un pavillon (2) comprenant une gorge (3), une surface latérale (4) et une embouchure (5), ainsi que des ouvertures formées dans la surface latérale (4) du pavillon (2); une tête haute fréquence (7) disposée dans la gorge (3) du pavillon (2); et plusieurs têtes ultra-haute fréquence (8) disposées dans les ouvertures (6) formées dans surface surface latérale (4) du pavillon (2); le pavillon (2) comprend en outre des pétales réfléchissants (9) formés sur la surface latérale (4) du pavillon (2), recouvrant les ouvertures (6) dans lesquelles sont placées les têtes ultra-haute fréquence (8) du côté de la gorge (3) du pavillon (4), et renvoyant le rayonnement des têtes ultra-haute fréquence (8) vers le bord de l'embouchure (5) du pavillon (2).
PCT/IB2022/056537 2021-07-16 2022-07-15 Haut-parleur WO2023286026A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
RU2021121100 2021-07-16
RU2021121100A RU2778444C1 (ru) 2021-07-16 Громкоговоритель

Publications (1)

Publication Number Publication Date
WO2023286026A1 true WO2023286026A1 (fr) 2023-01-19

Family

ID=84919160

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IB2022/056537 WO2023286026A1 (fr) 2021-07-16 2022-07-15 Haut-parleur

Country Status (1)

Country Link
WO (1) WO2023286026A1 (fr)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5526456A (en) * 1993-02-25 1996-06-11 Renku-Heinz, Inc. Multiple-driver single horn loud speaker
US20040003961A1 (en) * 2002-07-05 2004-01-08 Mackie Designs Inc. Low frequency horn
CN201114730Y (zh) * 2007-09-07 2008-09-10 祝天祥 全指向扬声器
US20090136072A1 (en) * 2005-06-07 2009-05-28 Danley Thomas J Sound reproduction with improved performance characteristics
US7751581B2 (en) * 2004-09-13 2010-07-06 L-Acoustics Public address system with adjustable directivity

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5526456A (en) * 1993-02-25 1996-06-11 Renku-Heinz, Inc. Multiple-driver single horn loud speaker
US20040003961A1 (en) * 2002-07-05 2004-01-08 Mackie Designs Inc. Low frequency horn
US7751581B2 (en) * 2004-09-13 2010-07-06 L-Acoustics Public address system with adjustable directivity
US20090136072A1 (en) * 2005-06-07 2009-05-28 Danley Thomas J Sound reproduction with improved performance characteristics
CN201114730Y (zh) * 2007-09-07 2008-09-10 祝天祥 全指向扬声器

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