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
  • H04R1/02—Casings; Cabinets ; Supports therefor; Mountings therein
  • H04R1/025—Arrangements for fixing loudspeaker transducers, e.g. in a box, furniture
• • 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 
  • H04R1/28—Transducer mountings or enclosures modified by provision of mechanical or acoustic impedances, e.g. resonator, damping means
  • H04R1/2807—Enclosures comprising vibrating or resonating arrangements
  • H04R1/2815—Enclosures comprising vibrating or resonating arrangements of the bass reflex type
  • H04R1/2819—Enclosures comprising vibrating or resonating arrangements of the bass reflex type for loudspeaker transducers
• • 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 
  • H04R1/28—Transducer mountings or enclosures modified by provision of mechanical or acoustic impedances, e.g. resonator, damping means
  • H04R1/2869—Reduction of undesired resonances, i.e. standing waves within enclosure, or of undesired vibrations, i.e. of the enclosure itself
  • H04R1/2884—Reduction of undesired resonances, i.e. standing waves within enclosure, or of undesired vibrations, i.e. of the enclosure itself by means of the enclosure structure, i.e. strengthening or shape of the enclosure
  • H04R1/2888—Reduction of undesired resonances, i.e. standing waves within enclosure, or of undesired vibrations, i.e. of the enclosure itself by means of the enclosure structure, i.e. strengthening or shape of the enclosure for loudspeaker transducers

Definitions

• the present invention relates to a loudspeaker and a loudspeaker housing for receiving a loudspeaker module, wherein the loudspeaker enclosure has a sound output side with a sound output opening and a cover, wherein the sound output side is the side of the loudspeaker housing which is intended to emit the sound of the loudspeaker module when the loudspeaker module in Loudspeaker housing is arranged, wherein transversely to the sound output side, the sound output direction, and wherein the enclosure is disposed radially circumferentially opposite to a direction opposite to the sound output direction and laterally encircling the sound output side, and wherein the speaker housing has a rear side of the sound output side.
• Loudspeakers have long been known for playing sounds, sounds, sounds and the like.
• the speakers have a speaker housing and a speaker module, which is arranged in the speaker housing.
• the loudspeaker module is used for the actual conversion of electrical signals into sound
• the loudspeaker housing is used for the arrangement of the loudspeaker module and the sound guide.
• the loudspeaker modules are usually designed as so-called area radiators in which corresponding membranes provide for the conversion of the electrical signals into sound.
• a distinction is made between the front installation and the rear installation.
• the loudspeaker module with the sound-emitting membrane is arranged in the direction of and at the sound output side of the loudspeaker enclosure, so that the sound directly leaves the loudspeaker enclosure to the front (sound output direction).
• the housing surrounding the loudspeaker module forms the so-called baffle, which prevents the acoustic short circuit between the sound emitted forwards and backwards.
• the loudspeaker housings further distinction can be made between open speaker housings having an open back, such as bass reflex tubes, or closed housings.
• the loudspeaker or loudspeaker housing should be simple in construction and have a pleasant external appearance. Furthermore, a simple and efficient manufacturability is desired.
• a loudspeaker housing having the features of claim 1 and a loudspeaker having the features of claim 14 and a method of manufacturing a loudspeaker having the features of claim 15.
• Advantageous embodiments are the subject of the dependent claims.
• the invention proposes to design an open loudspeaker enclosure with front installation in such a way that the enclosure is varied between a sound output side and a back side of the loudspeaker enclosure in its cross section which extends transversely to a corresponding connecting line between the sound output side and the back side.
• the rear-emitted sound is modified accordingly.
• a well-defined radiation resistance of the radiation and a better spatial coupling of the speaker chassis to the air in the listening room can thus be adjusted.
• the phase angle of the sound radiated from the rear with respect to the radiated sound at the sound output side of the loudspeaker chassis.
• This optimizes the phase, impulse response, step response, frequency response and speaker efficiency.
• the sound radiated to the rear is also output to the rear broadband by the variation of the dimension and / or shape of the envelope, so that not only a subrange of the frequency spectrum is emitted to the rear.
• the sound excitation of the housing through the speaker chassis is reduced and the speaker cabinet can work effectively throughout the audible frequency range, with standing waves, room resonances, Flatterechos or cabinet resonances can be largely avoided or minimized.
• the envelope may in this case be provided in the manner of a cylinder or curved circumferentially around the sound output side or around a line opposite the sound output direction.
• the distance between the sound output side and the back may be greater than the largest diameter of the envelope transverse to the corresponding distance line, so that the longitudinal axis of the speaker housing between the sound output side and back.
• the enclosure may in particular vary in diameter along the longitudinal axis.
• the envelope between the sound output side and the rear side can have a plurality of sections, in particular three sections, wherein a first section can be a barrel-shaped section, a second section a taper section in the form of a hyperboloid and a third section a conical extension section.
• barrel shape is understood to mean a cylinder-like shape in which the circular cross-section of the cylinder changes along the cylinder longitudinal axis, starting from a first end side and then decreasing again towards the opposite end side.
• the conical extension section can in particular be designed such that the housing opens or widens conically in the direction of the rear side.
• the hyperboloid tapered portion may be disposed between the barrel-shaped barrel-side section and the rearward tapered-extension section.
• the transitions between the sections can be continuous and / or fluent, so that the loudspeaker enclosure has substantially no edges and corners.
• the loudspeaker housing can be curved along its longitudinal axis, ie, the longitudinal axis has a curvature.
• the longitudinal axis is in this case defined such that the longitudinal axis in the cross sections, which are present transversely to the longitudinal axis, forms the center along the longitudinal extent, ie has uniform distances to the enclosure in different directions or forms the geometric center of gravity.
• the longitudinal axis can thus be arranged in the center of circular cross sections of the loudspeaker housing, the circular cross sections extending transversely to the longitudinal extension.
• the curvature of the loudspeaker housing results in particular in an inclined arrangement of the opening plane of the opening at the back to the opening plane of the opening on the sound output side, the corresponding planes having an acute angle greater than 0 ° and less than or equal to 90 °, in particular greater than or equal to 5 ° and less than or equal to 30 °.
• the loudspeaker enclosure may be smooth and / or textured on the insides, with smooth inner surfaces resulting in level gains and resonances in different frequency ranges, while roughened or textured interior surfaces will compensate for "blurring" of frequency increases and cancellations.
• the housing may be made of plastic, carbon fiber reinforced plastic or plastic with natural additives, in particular of organic or mineral materials.
• natural additives such as wood, bamboo, hemp or the like and mineral additives such as rock crystal powder or rose quartz powder can be provided.
• Even a production entirely of natural materials, or of natural composite materials, such as associated with natural binders organic materials such as wood chips, natural fibers and the like can be used.
• the fiction, contemporary speaker is thus a speaker with front mounting, in which therefore the speaker module is arranged on the sound output side or a corresponding opening. Since the opening can cover the entire surface of the sound output side and thus the loudspeaker module can likewise cover the entire opening, the described housing shape of the loudspeaker housing can be used to reduce the sound pressure. beam behavior can be improved to the front, as it is not affected by conventional baffles.
• a corresponding loudspeaker enclosure or a corresponding loudspeaker can be produced such that the dimensions and / or the shape of the loudspeaker enclosure are selected such that the desired properties of the loudspeaker are set.
• FIG. 1 is a perspective view of a first embodiment of a
• Fig. 2 is a side view of a second embodiment of a loudspeaker
• Fig. 3 is a sectional view through a third embodiment of a
• Fig. 4 is a side view of a fourth embodiment of an inventive
• FIG. 1 shows a perspective view of a first embodiment of a loudspeaker 1 according to the invention.
• the loudspeaker housing comprises a sound output side 2 and an envelope 3,4,5 and a rear side 6.
• an opening 7 is provided, behind which Loudspeaker module (not shown), which is arranged so that the main output direction (sound output direction) of the sound through the opening 7 takes place, so the speaker diaphragms are arranged in the direction of the opening 7.
• the enclosure 3,4,5 surrounding the sound output side 2, which likewise surrounds the loudspeaker module, has a barrel-shaped section 3, adjacent to the sound output side. 2, a tapered section 4 and a conically widening section 5.
• the barrel-shaped portion 3 has a substantially cylinder-like basic shape, however, to form the barrel shape of the diameter along a direction transverse to the sound output side initially increased and then reduced again to form a constriction in the tapering section 4.
• the loudspeaker housing opens in the direction of the rear side, wherein the rear side 6 has an opening, or is formed by an opening, so that not only sound is output via the sound output side, but in addition on the back 6, the free access to the hollow space formed by the barrel-shaped section 3 and the tapering section 4.
• FIG. 2 shows a top view of the sound output side 2, which in turn has an opening 7 which, however, in this embodiment is absolute and larger in relation to the diameter of the sound output side 2.
• FIG. 3 shows a cross section through a further embodiment of a loudspeaker 1 according to the invention, in which again a sound output side 2 is provided which has an opening 7 covering the entire sound output side 2.
• a loudspeaker module 8 is provided with corresponding membranes 9 for generating the sound.
• the cavity formed by the barrel-shaped section Connected to the speaker module 8 is the cavity formed by the barrel-shaped section, wherein on the inside of the barrel-shaped section 3 partially structures 15 are attached to the surface of the inside of the housing or are embodied therein.
• the corresponding structures 15 can not only, as shown in the embodiment of Figure 3, be arranged over a portion of the inner surface of the speaker housing, but in the entire interior of the speaker housing.
• the structures 15 can be of very different surface shapes, which are arranged on the inside of the loudspeaker housing or incorporated therein by machining the inside.
• the structures 15 may be present not only in the area of the barrel-shaped section but also in the tapering section 4 and in the conical extension section.
• the structurings can be formed from dimensions of a few nanometers to millimeters and in particular by roughened surfaces or other suitable measures.
• the loudspeaker housing in the area of the transition from the barrel-shaped section 3 to the hyperboloid-like taper section 4 is furthermore curved in such a way that the rear side 6 or the plane of the opening of the rear side 6 is arranged at an acute angle ⁇ to the opening 7 and a parallel plane 14 thereto. Accordingly, a longitudinal axis 10 of the loudspeaker housing, which is arranged over the entire length of the loudspeaker housing in cross sections to the longitudinal extension in the center of the cross sections, a deviation from the straight line 12, wherein in turn an angle ⁇ between the longitudinal axis and the straight line 12th is present.

Applications Claiming Priority (2)

Publications (1)

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ID=47501184

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• 2012
  • 2012-12-14 CN CN201280061827.2A patent/CN104067631A/zh active Pending
  • 2012-12-14 US US14/365,397 patent/US9338537B2/en not_active Expired - Fee Related
  • 2012-12-14 WO PCT/EP2012/075658 patent/WO2013087900A1/de active Application Filing
  • 2012-12-14 JP JP2014546557A patent/JP6375228B2/ja not_active Expired - Fee Related
  • 2012-12-14 EP EP12809734.2A patent/EP2792161A1/de not_active Withdrawn
  • 2012-12-14 EA EA201400708A patent/EA028745B1/ru not_active IP Right Cessation

Non-Patent Citations (2)

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