EP3519643A1 - Schallschutzhaube für musiker und büroangestellte - Google Patents
Schallschutzhaube für musiker und büroangestellteInfo
- Publication number
- EP3519643A1 EP3519643A1 EP17771456.5A EP17771456A EP3519643A1 EP 3519643 A1 EP3519643 A1 EP 3519643A1 EP 17771456 A EP17771456 A EP 17771456A EP 3519643 A1 EP3519643 A1 EP 3519643A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- wall
- sound
- hood
- acoustic enclosure
- enclosure according
- Prior art date
- Legal status (The legal status 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 status listed.)
- Granted
Links
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Classifications
-
- 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
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/62—Insulation or other protection; Elements or use of specified material therefor
- E04B1/74—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls
- E04B1/82—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls specifically with respect to sound only
- E04B1/8218—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls specifically with respect to sound only soundproof enclosures
Definitions
- the invention relates to a soundproof hood for musicians and office workers according to the features of claim 1.
- the natural spectral composition of the played sound is no longer audible for the playing with a practice muffler brass, as mainly the low-frequency sound components can penetrate the damper wall. Often occur when playing with practice damper and intonation problems. In addition, the volume of the sound played with a practice damper is too low to practice effectively and efficiently. Another disadvantage is that the wind instrument becomes heavier due to the damper.
- the practice damper is only suitable for temporary use and for quick warm-up, for example shortly before a performance.
- a soundproof hood comprising a truncated pyramid shape, wherein the base of the truncated pyramid are formed as an opening, a plurality of side surfaces of the truncated pyramid as side walls and the top surface of the truncated pyramid as a rear wall of the soundproof hood, the rear wall of the soundproofing a doppelwandi - Has structure and includes an outer wall and an inner wall, which limit a damping space.
- An essential advantage of the invention is that with the soundproof hood on the one hand, the sound intensity of the sound source to be damped and thus the volume for the environment is reduced, while on the other hand the sound field generated by the sound source in the vicinity of the place of origin in sufficient volume and without substantial change of the original spectral composition remains audible.
- the soundproof hood is particularly suitable for musicians who want to practice on an instrument with a high sound power level, such as a plucked, stringed or wind instrument, or the human voice, without annoying their environment auditory. This problem arises, for example, in rental housing, where it is impossible, in particular for brass, to practice on their instrument without bothering the neighbors.
- An essential advantage of the invention results from the double-walled design of the rear wall.
- the soundproof hood has its opening in the direction of the sound source, so for example in the direction of a bell of a wind instrument or the face of the singer. Since the sound radiation is relatively strongly directed, a large part of the sound energy meets without prior reflection within the sound enclosure on the back wall.
- the Double-walled rear wall construction with cavity damping has a good soundproofing effect, whereby the incident sound can be effectively damped.
- Another essential advantage of the invention results from the geometry of the soundproof hood. Since the side walls and the rear wall are arranged in a truncated pyramid geometry, ie lateral boundary surfaces of the soundproof hood are arranged inclined to each other and inclined to the rear wall, sound superimposition effects of any kind, such as comb filter effects or resonant room modes, can be prevented.
- the interior of the soundproofing hood is particularly suitable for encapsulating microphones. This allows high-quality sound recordings, as disturbing acoustic effects, which are caused by superposition of reflected sound waves, are effectively suppressed inside the sound enclosure due to their geometry.
- the invention thus provides a soundproof hood which has good sound reduction properties, without distorting the spectral properties of the sound signal to be attenuated. Because of these characteristics, the invention is not only suitable for musicians but can also be used at desksets, for example in open-plan offices or call centers. With the invention, individual workplaces can be acoustically encapsulated without adversely affecting the acoustic properties of the workplace. This is particularly beneficial in workplaces such as call centers, where employees communicate at their workplace.
- the rear wall is firmly connected to the side walls.
- the walls can for example be glued together, screwed, doweled or plugged into each other.
- the outer shell of the soundproof hood formed from the rear wall and the side walls can also be produced in one piece, for example cast.
- a truncated pyramid is meant a particular type of polyhedron having a base formed by a (convex) polygon.
- the base can be, for example, a quadrilateral, in particular a rectangle. From the corners of the polygon go out edges of the truncated pyramid, which run to a point. The edges open into a top surface, which is parallel to the Base surface extends and is also formed by a polygon.
- the top surface may for example be a quadrilateral, in particular a rectangle. Since the edges run together from the base, the top surface is smaller than the base.
- all side surfaces of the truncated pyramid are formed as side walls.
- the interior of the soundproof hood is limited to all sides except for the opening. This increases the damping effect on the environment.
- At least one side surface of the truncated pyramid is fully or partially opened, and the remaining side surfaces of the truncated pyramid are formed as closed side walls.
- At least one side wall preferably all side walls, forms an obtuse angle with the rear wall.
- the opening of the soundproof hood can be increased, which increases the scope of the soundproof hood.
- the angle between the rear wall and the side walls is 135 °. More preferably, an angle between the rear wall and the side walls is 100 °.
- the side walls are formed by side wall shells, which are provided on the side facing the interior of the soundproof hood with an insulating layer, in particular an insulating layer made of a foam.
- the insulating layer has a sound-absorbing effect.
- a lower sound-reflecting effect of the side walls is achieved on the interior side, resulting in a lower sound pressure level in the soundproof hood interior.
- sound superimposition phenomena inside the soundproofing hood are suppressed even more effectively, since the side effects walls provided with an insulating layer only reflect limited or attenuated sound.
- a soft foam with good sound absorption properties for example polyurethane (PUR) foam.
- the inner wall is perforated.
- the inner wall is formed by a perforated plasterboard. Sound striking the rear wall can thus be damped according to the spring-mass principle. Thus, the damping effect is improved.
- the rear wall has a cover with which the damping space between outer wall and inner wall can be closed.
- the damping space between the inner wall and outer wall can be closed.
- an insulating element in particular a Mineralfaserdämmplatte is arranged. Sound that impinges on the inner wall, can be effectively damped due to the damping chamber of air cushion and insulation element.
- the insulating element effectively reduces the dynamic stiffness of the air layer in the damping chamber.
- the double-walled rear wall thus acts as a perforated plate resonator with cavity damping.
- the insulating element is preferably formed from a material with low dynamic stiffness and sufficient length-related flow resistance. This causes a reduction in the dynamic stiffness of the air layer in the damping chamber and leads to an improvement of the sound insulation properties, in particular the high-frequency sound insulation properties.
- the spatial and building acoustic properties of the double-walled rear wall can be modified in a targeted manner.
- the combination of the double-walled rear wall with the perforated inner wall and the cavity damping by means of the Dämmelements an approximately constant sound absorption across all frequencies can be achieved.
- the insulating element is arranged in the damping chamber such that it is in contact with neither the outer wall nor with the inner wall. This ensures that the insulation element can swing freely. Thereby the damping effect of the Dämmelements is increased. There is no two-dimensional connection between the insulating element and the elements of the soundproof hood. Thus, a sound bridge-like energy transfer via the insulating element can be excluded. As a result, the sound-damping effect of the soundproof hood can be improved overall.
- the insulating element is loosely inserted into the damping chamber. On the one hand, this ensures that the insulating element can oscillate freely in the damping chamber. On the other hand, it is possible in a simple manner to replace the insulating element.
- a front surface surrounding the opening formed by the side wall shells is covered with a front absorber which is designed to absorb sound incident on the front surface.
- the front surface is formed by a front plate which has a central recess corresponding to the opening of the soundproof hood and is mounted on the front side of the soundproofing hood.
- the front panel together with the side walls forms the side wall shells.
- the front panel covers the insulating layers on the surfaces of the insulating layers, which are oriented in the direction of the opening. It is further preferred that the front panel has passage openings in a region surrounding the opening. The passage openings are positioned on the front panel in such a way that behind the passage openings in the installed state of the front panel, the insulation layers of the side walls can be arranged. As a result, sound that is not damped by the front absorber, enter the insulation layers of the side walls
- the soundproof hood has lateral absorber elements, which can be attached laterally to the soundproof hood and are designed to absorb the sound waves radiated laterally from a sound source located in front of the opening. This also serves to improve the soundproofing properties of the soundproof hood.
- the lateral absorber elements are advantageous, for example, when using the soundproof hood a wind instrument such as a saxophone, since the sound emission of the saxophone, especially in the middle frequency range, also takes place laterally over the flaps. By means of the absorber elements, the lateral sound transmission in the room next to the soundproof hood can be effectively suppressed.
- the laterally radiated sound waves also include obliquely backward radiated sound waves when the sound source is placed in the immediate vicinity of the opening between the lateral absorber elements.
- the insulating layers of the side walls of several, preferably two, more preferably three Dämm slaughterlagen are formed from different insulating material.
- the middle insulating layer layer is preferably formed as an intermediate layer of a material with higher density.
- the layer materials can be matched to the properties of the material used for the outer shell.
- bituminous heavy foil with a density of about 3,000 kg / m 3
- bitumen board with a density of about 2,000 kg / m 3
- one of the side walls has a holder by means of which the soundproof hood can be mounted on a stand, in particular a microphone stand with a swivel arm.
- a microphone stand is also often already available, so that no additional purchase is necessary to set up the soundproof hood.
- you can also use another conventional tripod such as a speaker stand or a custom tripod.
- the holder has a base plate on which a round tube is arranged, wherein the round tube is arranged in a wall bore of the side wall such that the base plate rests against the outside of the side wall shell and is connected thereto.
- the connection between the Base plate and the side wall shell can be done for example by gluing.
- the base plate may have holes and be bolted to the sidewall shell.
- the round tube and / or the base plate are preferably made of a metal, for example made of aluminum. It is possible to manufacture the round tube from plastic.
- the round tube can be formed integrally with the side wall. If the outer wall and the side walls of the soundproof hood are made of plastic, the base plate of the bracket can be omitted.
- the center axis of the round tube is inclined relative to the surface normal of the base plate by an angle between 10 ° and 70 °.
- the round tube of the holder can be oriented vertically, so that a tripod or swivel arm of a microphone stand can be inserted vertically from below into the round tube.
- the angled base plate abuts against a side wall of the soundproof hood, so runs parallel to this.
- the angle between the surface normal of the base plate and the center axis of the round tube determines the orientation of the sound enclosure relative to the (vertical) orientation of the round tube, which is placed on the tripod.
- the angle between base plate and round tube can be chosen so that the orientation of the opening of the soundproof hood is suitable for a particular type of instrument.
- Particularly preferred is an angle between the surface normal of the base plate and the round tube of 10 ° or 45 °.
- an insulating layer is disposed on the inside of the round tube.
- the insulating layer is preferably made of felt or silicone.
- the outer wall of the soundproof hood has bores by means of which the soundproof hood can be mounted, preferably screwed, on a mounting plate of a wall mounting.
- the sound enclosure on a music stand element which is on the outside of the soundproof hood, in particular on one of the side walls or on the rear wall, releasably secured and connectable to a music stand headboard.
- the music stand element is attached to the outside of the soundproof hood.
- a music stand headboard can be attached to the soundproof hood in a simple manner, so that a musician practicing on the soundproofing hood does not need a separate music stand.
- the soundproof hood has one or more fastening means for a hanging system, on which the soundproofing hood can be suspended from a ceiling.
- This embodiment is particularly suitable for instruments whose sound radiation is predominantly upward, such as a violin, a tuba, a bassoon or euphonium.
- the one or more fastening means is arranged on the outside of the soundproof hood.
- the one or more fasteners may be formed by hooks or rollers. It is also possible to provide this rope tensioner with Seileinrastung.
- the hanging system can be formed for example by ropes, steel cables, plastic ropes or wires.
- Particularly preferred are two fastening means, so that the soundproof hood can be suspended at two points. This allows a quick and easy adjustment of the orientation of the opening of the soundproof hood. Further preferred are four attachment means. Thus, a stability of the suspension can be improved.
- the hanging system is formed by a pulley system, wherein the fastening means for the hanging system is designed such that the hanging system is connected to the soundproof hood at a plurality, in particular two points. This allows the height and orientation of the sound enclosure at any time easily changed.
- an insulating element in particular a mineral fiber insulation board, is arranged on a suspension system, wherein the insulating element is in contact neither with the outer wall nor with the inner wall. If the soundproof hood is hung with the opening facing downwards, an insulation element loosely inserted into the damping room would fall down and rest on the inner wall. This would limit the free oscillation of the insulating element. With the Hanging system, which is arranged in the damping chamber, the insulating element can be arranged so that it does not come into contact with the inner or outer wall of the rear wall, so that the damping effect is improved.
- a fastening element in particular a thread, is arranged on the rear wall, on which a mounting element for a microphone can be fastened such that it is arranged in the interior of the soundproofing hood.
- a microphone can be mounted in the interior of the soundproof hood. Since the spectral properties of the sound signals radiated by the sound source are not significantly changed by the interior of the soundproof hood, the interior of the soundproof hood is particularly suitable as a location for a microphone.
- the outer wall of the rear wall and / or the side wall shells are formed by wood panels, in particular poplar plywood panels or MDF panels, or plastic panels. It is also possible that the inner wall is formed by a wooden plate, in particular poplar plywood or MDF board, or a plastic plate. These materials are favorable in terms of weight, cost and processing properties. In addition, these materials have favorable acoustic properties.
- a lighting element is arranged on the inner wall. If the noise protection hood is hung, the area under the soundproof hood can be illuminated. This is particularly advantageous when used in an office space, since the sound enclosure then also provides illumination of the workplace in addition to the acoustic enclosure.
- Fig. La is a perspective view of a sound enclosure according to a first embodiment from the front
- Fig. Lb is a perspective view of the sound enclosure according to a first embodiment seen from the rear side
- Figure 2 is a section of the soundproof hood of Figures la and lb mounted on a tripod with a microphone;
- FIG. 3 is a perspective view of an embodiment of a holder for the soundproof hood of FIG. 2.
- Figure 4a is a sectional view of the sound enclosure of Figure 2 with the entire tripod having a pivot arm which is in a first position.
- FIG. 4b shows the view of the soundproofing hood and of the stand from FIG. 4a, wherein the pivoting arm is in a second position
- FIG. 4c shows the view of the soundproofing hood and of the stand from FIG. 4a, wherein the pivoting arm is in a third position
- Fig. 5 is a perspective view of the sound enclosure of Fig. La, to which a music stand element is mounted in three positions;
- FIG. 6 is a perspective view of a soundproof hood according to a second embodiment of the invention from the front;
- Fig. 7 is a front view of a front panel according to the second embodiment of the invention.
- FIG. 8a is a perspective view of a lateral absorber element
- FIG. 8b shows a plan view of the soundproofing hood from FIG. 6 with the lateral absorber elements removed;
- Fig. 8c is an enlarged view of a projection of the front surface of
- FIG. 9 is a perspective view of a wall mount for soundproof hoods according to the present invention.
- Fig. 10 is a sectional view of a sound enclosure according to a third
- Fig. 11 is a schematic view of a workplace, above the one
- FIG. 12 is a sectional view of the soundproof hood of FIG. 11; FIG.
- FIG. 13 is a sectional view of a soundproof hood according to a fifth
- Fig. La shows a soundproof hood according to a first embodiment of the invention in a perspective view from the front.
- the soundproof hood has the shape of a truncated pyramid. It has a rectangular opening 30, which forms the base of the truncated pyramid.
- Four side walls 20 extend on the side surfaces of the truncated pyramid from the opening 30 to a rear wall 10.
- the rear wall 10 forms the top surface of the truncated pyramid and forms an obtuse angle with all the side walls 20. In the present embodiment, all side surfaces of the truncated pyramid are formed as side walls 20.
- the truncated pyramid shape of the soundproof hood is also clearly visible in FIG. 1b, where a perspective view of the soundproofing hood is shown from the rear.
- a lid 14 is attached with a handle which is removable to allow access to the interior of the rear wall 10.
- Fig. 2 shows a section of the soundproof hood of Fig. La in the vertical direction.
- the soundproof hood is oriented so that the opening 30 faces to the left.
- the section shows two of the side walls 20, the upper and the lower.
- the side walls 20 are each formed by a side wall shell 21, which is provided on the inside with an insulating layer 23.
- the insulating layer 23 consists of a soft material with good sound absorption properties, for example made of foam.
- the side wall shells 21 surround the insulating layers 23 on the side surfaces of the truncated pyramid, and on the surface of the insulating layer 23, which is oriented in the direction of the opening 30. Thus, the insulating layer 23 to the outside of the respective side wall shell 21 is completely covered.
- the rear wall 10 has a double-walled construction and comprises an outer wall 11 and an inner wall 12.
- the surface on the front side of the soundproofing hood, which surrounds the opening 30 (hereinafter referred to as the front surface), is provided with the reference numeral 22.
- This front surface may be formed integrally with the sidewalls 20 as part of the sidewall shells 21.
- the front surface may be formed by a front plate 22, which has a central recess corresponding to the opening 30 of the soundproof hood and is mounted on the front side of the soundproofing hood.
- the front panel 22 is connected to the adjacent side walls 20, in particular glued or screwed.
- the rear wall 11 and the side wall shells 21 form an outer shell of the soundproof hood and are firmly connected.
- the outer shell of the soundproof hood can be made, for example, of wood, in particular of poplar plywood boards or MDF boards, or of plastic.
- the side wall shells 21 are screwed to the rear wall 10, glued and / or connected to each other by wooden pins, dowels or Lamellos.
- the sound source is directed so that the radiation of the sound is directed to the opening of the sound enclosure.
- the bell of the instrument is aligned with the opening 30 of the soundproof hood.
- the sound source is disposed on a central axis of the sound enclosure, so that the distance to all side walls 20 is substantially equal.
- the incident on the rear wall 10 sound energy component is compared to the other boundary surfaces, so the side walls 20, due to the pronounced, directed sound radiation of wind instruments and the human voice much higher.
- a higher sound damping effect of the rear wall 10 relative to the side walls 20 is advantageous.
- the soundproofing effect of two-walled systems, especially above the resonant frequency of the wall system, is better than that of single-walled systems of equal weight.
- the inner wall 12 is perforated and formed in the present embodiment by a perforated plasterboard.
- the inner wall 12 and the outer wall 11 are spaced by a connecting element 15, in the present embodiment, a metal or plastic profile construction of CW and UW profiles.
- an insulating element 13 is arranged between the inner wall 12 and the outer wall 11.
- the insulating element 13 is formed in the present embodiment by a mineral fiber plate, which acts as a cavity damping.
- the insulating element 13 is loosely inserted into the damping space between outer wall 11 and inner wall 12 and neither with the outer wall 11 nor with the inner wall 12 in contact.
- the insulating element 13 can swing freely and develop good damping properties.
- fiber insulation materials are used as the insulating element 13. These are particularly suitable as a cavity damping due to their low dynamic stiffness and concomitant high resilience.
- a portion of the sound impinging on the rear wall 10 is reflected back to the musician after the single reflection on the inner wall 12 through the opening 30.
- the musician can therefore perceive the self-played or sung sounds in sufficient volume. In all other spatial directions, the free propagation of sound through the sound enclosure is limited. The sound pressure level in the room is reduced.
- the proportion of sound that is reflected back to the musician can be influenced by the ratio of perforated to unpopulated surface of the inner wall 12 and by a suitable choice of the material and the layer thickness in its intensity and frequency composition.
- the properties of the sound component exiting through the opening 30 can be influenced by the choice of the insulating element 13 in the damping chamber.
- the sound is absorbed by the insulating element 13.
- sound striking the rear wall is attenuated according to the mass-spring principle.
- the insulating element 13 influences the dynamic stiffness of the air layer in the damping chamber.
- the insulating element 13 can be removed from the damping chamber and replaced by the cover 14 is removed. The musician can decide which material in which thickness he uses for the insulating element 13 to obtain respectively desired sound absorption properties of the rear wall 10.
- the spectral composition of the incoming sound in the soundproof hood is almost unchanged by the lower intensity of the reflections in the interior. Thus, a reduction of the sound pressure level in the room is achieved by the soundproof hood. In addition, the spectral composition of the sound and thus the sound of the incoming sound, virtually unchanged.
- the sound inside the soundproof hood is dry and true to the original and therefore particularly suitable for sound recordings.
- a holder 40 In order to set up the soundproof hood, the soundproof hood according to the present embodiment, a holder 40.
- a wall bore 24 is formed in one of the side walls 20, a wall bore 24 is formed. In Fig. 2, this is the lower side wall 20.
- the holder 40 In the wall bore 24, the holder 40 is inserted.
- the holder 40 is shown in a perspective view in FIG.
- the holder 40 has a base plate 41, from which a hollow round tube 42 extends.
- the round tube 42 is open at the bottom and terminates at its upper end with a surface having a central circular bore 43.
- the bore 43 has a diameter of 10.5 mm in the present embodiment.
- the holder 40 can be plugged onto the head part of a commercially available microphone stand, which usually has a knurled screw 55 and an external thread 54 at its upper end.
- the external thread 54 is a 3/8-inch thread.
- the bore 43 is dimensioned so that it can receive the external thread 54, so that the holder 40 then rests on the microphone stand.
- the holder 40 rests with the base plate 41 on the side wall shell 21 of the lower side wall 20 and supports the soundproof hood.
- the round tube 42 extends into the wall bore 24 of the side wall 20 and rests with the upper end surface on a knurled screw 55 which is screwed onto an external thread 54 at the end of a microphone stand.
- the external thread 54 of the microphone stand protrudes through the bore 43 of the holder 40, so that it is accessible from the interior of the soundproof hood.
- the external thread 54 can serve as a fastening element to which a support member 56 for a microphone 57 can be fastened.
- a gooseneck is shown as a support member 56 to which the microphone 57 is supported by a clamp.
- microphone terminals, stereo rails, or other support for microphones may also be attached to the external thread 54.
- an insulating layer 44 is arranged on the inside of the round tube 42.
- the insulating layer 44 is formed of silicone.
- the insulating layer 44 is made of an elastic material and is used for vibration isolation of the sound enclosure of the tripod.
- a nut (not shown) can be mounted on the external thread 54 after the holder 40 has been placed on the stand in order to fix the soundproofing hood to the stand.
- the holder 40 holes in the base plate 41, with which the holder 40 can be screwed from the outside to the side wall 20.
- the surface normal of the base plate 41 is not parallel to the longitudinal axis of the round tube 42, but inclined at an angle. Due to the truncated pyramid shape of the soundproof hood, the side walls 20 are not aligned horizontally when the rear wall 10 is oriented vertically, as can be seen in Fig. 2. Due to the inclination between surface normal of the base plate 41 and the round tube 42, the orientation between the tripod and sound enclosure can be adjusted. In Fig. 2, the inclination is chosen so that the opening 30 of the sound enclosure is aligned vertically when the round tube 42 of the holder 40 is perpendicular to the tripod.
- the sound enclosure can be easily and quickly mounted on standard microphone tripods. This is particularly advantageous when a microphone stand is used which has a pivotable head part. Thus, the orientation of the soundproof hood can be easily adapted to a variety of uses.
- FIGS. 4a to 4c. 2 which is mounted on a microphone stand 50, which has a foot 51 and a pivot arm 53, which are connected via a hinge 52.
- the pivot arm 53 is oriented vertically, so that the opening 30 of the soundproof hood is also oriented vertically. This orientation is suitable, for example, for use with a trumpet, which is usually held horizontally when playing.
- the pivot arm 53 is inclined forward, so that the opening 30 of the soundproof hood is directed obliquely downwards.
- This orientation is suitable, for example, for use with a saxophone, in which the bell is oriented obliquely upwards.
- the pivot arm 53 is inclined backwards, so that the opening 30 of the soundproof hood is pointing obliquely upward.
- This attitude is suitable for example for a clarinet player.
- Most commercially available microphone stands also allow adjustment of the height of the hinge 52, so that the soundproof hood can always be aligned to match the sound source and height of the musician.
- the soundproof hood is again in a perspective view as shown in Fig. La.
- the outer shell of the soundproof hood points to the rear wall 10 and on two of the side walls 20 a way to attach a music stand element 19.
- three possible positions of the music stand element 19 are shown.
- a (not shown) music stand headboard can be attached.
- the position of the music stand element 19 can be adjusted depending on the orientation of the soundproof hood, as shown in Figures 4a to 4c, so that the musician can turn off notes on the Notenpult- headboard when playing, which is attached to the music stand element 19.
- FIG. 6 is a perspective view of a soundproofing hood according to a second embodiment of the invention.
- the basic structure corresponds to that of the soundproof hood of the first embodiment.
- a front absorber 25 is additionally provided, which covers the front surface of the soundproof hood adjacent to the opening 30 of the soundproofing hood.
- the front surface can be formed by the parts of the side wall shells 21, which surround the insulating layers 23 in the direction of the opening 30. But the front surface may also, as also described in the first embodiment, be formed by a one-piece front panel 22.
- the front absorber 25 By using the front absorber 25, sound that strikes and is reflected by the front surface of the sound enclosure can be absorbed. This further improves the soundproofing properties of the soundproof hood.
- the sound-absorbing inner lining according to the first embodiment ie the insulating layer 23 on the side walls 20, in Fig. 6 is not shown.
- the insulating layers 23 are also provided in the second embodiment on the side walls 20.
- the front absorber 25 is made of foam, which has in the direction of the opening 30 pyramidal elevations (so-called pyramid foam).
- pyramid foam as front absorber 25 has the advantage that a good damping effect can be achieved over a wide frequency spectrum. This leads to improved sound properties in the immediate vicinity of the opening 30.
- the thickness of the insulating layer is greatest, that is, even medium to low-frequency sound can be sufficiently absorbed at this point.
- a nearly linear frequency response of the front absorber 25 in terms of absorption can be achieved.
- the front absorber 25 covers substantially the entire front surface of the soundproof hood.
- a metal band insert 29b is provided adjacent to the upper and lower edges of the opening 30, adjacent to the upper and lower edges of the opening 30, there is provided a narrow strip of the front surface which is not covered by the front absorber 25.
- a metal band insert 29b is provided adjacent to the upper and lower edges of the opening 30, adjacent to the upper and lower edges of the opening 30, there is provided a narrow strip of the front surface which is not covered by the front absorber 25.
- a metal band insert 29b is provided to the metal tape inserts 29b.
- a sheet of paper may be attached by means of a magnet (not shown) so as to be held in front of the opening 30.
- a note or text sheet in front of the opening 30 and thus be mounted in the field of view of the singer. Since paper is extremely sound-permeable, such attached sheet of music or text does not appreciably affect the soundproofing properties of the soundproofing hood.
- Fig. 6 are further two indentations 29a to see at the bottom of the opening 30, which can be used to guide a cable which is connectable to a mountable in the soundproofing microphone.
- the soundproofing hood shown in FIG. 6 also has two lateral absorber elements 28, which protrude from two edges of the front surface of the soundproofing hood substantially perpendicular to it in the direction of the opening 30.
- the lateral absorber elements 28 are releasably attached to the soundproof hood.
- the lateral absorber elements 28 are provided on the side facing the opening 30 with an insulating layer 28b.
- the insulating layer 28b has a substantially rectangular shape, the longer side preferably corresponds to the edge lengths of the front surface on which the lateral absorber elements 28 are mounted.
- the use of the lateral absorber elements 28 is particularly advantageous in sound sources whose sound signal contains a significant non-directional component, which can not be absorbed by a suitable orientation of the sound source on the opening 30 of the sound enclosure. This is the case, for example, with (double) reed instruments such as a saxophone in which the
- the front panel 22 can be modified to the effect that the insulation effect of the insulating layer 23 in the interior of the soundproof hood is additionally utilized for the insulation of the incident on the front absorber 25 sound.
- 7 is a front view of a correspondingly modified front panel 22. As shown in FIG. 6, the front panel has the cable guide protrusions 29 a and the metal band inserts 29 b at the upper and lower ends of the opening 30. In addition, passage openings 22a are provided in an area surrounding the opening 30.
- the passage openings 22a are positioned on the front plate 22 such that the insulating layers 23 are located behind the passage openings 22a in the installed state. If the in Fig. 6, provided with the front absorber 25 shown in FIG. 6 and used in the soundproof hood shown in FIG. 6, sound incident on and not completely absorbed by the front absorber 25 can penetrate through the through holes 22a into the inside of the front absorber 25 Enter sound insulation hood. There, the sound enters the insulation layers 23 and is attenuated by them. It should be noted at this point that the in Fig. 7 front panel 22 in combination with the
- Front absorber 25 can also be used in a soundproof hood according to the other embodiments.
- Fig. 8a shows a perspective view of a lateral absorber element 28.
- the lateral absorber element has an L-profile 28a with a narrow and a wide area.
- the L-profile 28a can be made of the same materials as the outer shell of the soundproof hood.
- the L-profile 28a may be formed as a plastic profile.
- On the wider surface of the insulating layer 28b is fixed, for example by gluing.
- As the insulating layer 28b for example, a polyurethane foam having a thickness of 3 cm can be used.
- a magnetic tape 27b is fixed, which extends substantially over the entire vertical length of the shorter surface of the L-profile 28a.
- the magnetic tape 27b serves to fasten the lateral absorber element 28 to the soundproofing hood.
- the front surface of the soundproof hood at the edges to which the lateral absorber elements 28 are attachable each having a projection 26 a, which is parallel extends to the front surface over the entire edge length.
- a notch 26b is provided, which preferably extends over the entire length of the projection 26a.
- a metal strip 27a (not shown in FIG. 8b) is inserted.
- Fig. 8c shows in plan view an enlarged view of a projection 26a with the notch 26b and the embedded therein metal strip 27a, and the short side of the L-profile 28a of a lateral absorber element 28, just before the side absorber element 28 is attached to the soundproof hood ,
- FIG. 9 is a perspective view of a wall bracket 90 suitable for this purpose.
- the wall mount 90 has a mounting plate 91 with holes 91a.
- the wall bracket 90 has a plurality of pivotally interconnected pivot arms.
- two pivot arms 92, 93 are provided.
- the pivot arm 92 is pivotally connected to the mounting plate 91.
- the pivot arm 93 is pivotally connected to one end
- Swivel arm 92 connected. At its other end, the pivot arm 93 is connected to a wall mount 97 which is mountable to a wall.
- hinge assemblies 94, 95, 96 The pivotal connections between the components of the pivot arm 90 are formed by hinge assemblies 94, 95, 96.
- hinge joints for the hinge assemblies 94, 95, 96 are provided.
- the hinge assemblies 95 and 96 permit horizontal pivoting about a vertical axis
- the hinge assembly 94 is configured such that the mounting plate 91 is pivotable both vertically about a horizontal axis and horizontally about a vertical axis.
- a combination of two hinge joints can be used for this purpose, the axes of which are perpendicular to one another.
- the hinge assembly 94 may be formed by a ball joint. This makes it easy to adjust the position and orientation of the sound enclosure in the room.
- Fig. 10 is a sectional view of a soundproof hood according to a third embodiment of the invention.
- the soundproof hood in turn has a truncated pyramid shape, wherein the base area through the opening 30, the side surfaces through the side walls 20 and the top surface through the rear wall 10 are formed.
- the materials and construction of the side walls 20 and the rear wall 10 are substantially the same as those of the first embodiment.
- the soundproof hood according to the third embodiment has no wall bore 24 for a holder 40. Instead, there are fastening means 18 on the outer shell of the soundproof hood.
- rollers are provided as fastening means, which are connected to the outer wall 11 of the soundproof hood.
- rollers ropes 61 are guided as a hanging system, which are fixed to a ceiling 60.
- the soundproof hood according to the third embodiment can depend on a ceiling 60, so that the opening 30 of the soundproofing hood is directed downwards. This orientation is suitable for instruments whose sound radiation is directed upward, such as a tuba.
- two rollers are provided as fastening means 18. These are arranged so that they lie in a plane with the center of gravity of the soundproof hood, so that the soundproof hood when hanging can not tilt about a line connecting the rollers.
- the ropes 61 may be embodied as part of a pulley system (not shown) and their length may be changed independently.
- the two fastening means 18 can be mounted in different room height, so that the opening 30 of the soundproof hood is not horizontally oriented but slightly inclined. This is advantageous when used with an instrument whose horn is not oriented vertically upwards but is slightly inclined, such as in a tenor horn.
- a suspension system is provided in the damping space, which is formed in Fig. 10 by CD-profiles 16 which are connected to a cross connector 17 and are secured to the connecting elements between the inner wall 12 and the outer wall 11.
- the CD profiles 16 are provided on their underside with an insulating material 17a, for example an EPDM strip or bituminous heavy foil, so that they are not damaged by the impact. cause the sound waves to vibrate and cause annoying snarl sounds.
- the insulating element 13 is loose. It is held by the suspension system in a position in which it in turn touches neither the inner wall 12 nor the outer wall 11.
- the sound absorption and partial reflection by the rear wall 10 and the side walls 20 is analogous to the description of the first embodiment.
- a high reduction of the sound pressure level in the area outside the soundproof hood is achieved.
- the generated musical tones are sufficiently audible and almost unadulterated in terms of their tonal properties.
- the sound inside the soundproof hood is dry and true to the original and thus particularly suitable for sound recordings.
- a fastening element 54 is provided, which is formed in the present embodiment by an external thread.
- the inner plate 12 is perforated such that the fastening element 54 is accessible from the interior of the soundproof hood.
- a mounting element (not shown) for a microphone can be fastened to the fastening element 54 in order to perform sound recordings.
- Fig. 11 shows a schematic view of an office workplace with a table top 80 and a monitor 81, over which a sound enclosure according to a fourth embodiment of the invention is suspended.
- the soundproof hood according to the fourth embodiment is similar to that of the third embodiment.
- not all side surfaces of the truncated pyramid shape are formed as side walls 20.
- the left side surface in the image is formed as a complete side wall 20.
- the right in the image side surface has no side wall 20, but is open. This is advantageous in the present embodiment because a sidewall at that position would hinder an office worker working at the workstation.
- the soundproof hood shown can nevertheless develop a sufficient soundproofing effect.
- the forwardly directed downwards sound waves emitted by the office worker are reflected off the table top 80 and then hit either directly or after another reflection on the monitor 81 on the sound-absorbing lined interior of the sound enclosure.
- the absorption and partial reflection of the sound entering the sound enclosure then takes place analogously to the other embodiments.
- FIG. 12 shows a section of the soundproofing hood from FIG. 11.
- the fastening means 18 for the suspension system are rope tensioners with cable engagement or eyelets which are fastened to the outer wall 11.
- the soundproof hood according to the fourth embodiment has a less symmetrical mass distribution due to the reduced number of side walls 20. Thus, the number of fasteners is increased to four, two of which are shown in FIG. 12 can be seen.
- the attachment to the ceiling 60 in turn via ropes 61 which are connected to a corresponding fastening system on the ceiling 60.
- the soundproof hood according to the fourth embodiment in the damping chamber again on a suspension system of CD-profiles 16 and connectors 17, on which the insulating element 13 rests. Furthermore, a lighting element 70 is embedded in the inner plate 12 in order to ensure a sufficient supply of light at the workplace.
- the lighting element 70 is formed in the present embodiment by LED strips, which are installed behind an LED aluminum profile.
- the dimensions of the soundproof hood can each be adapted to the specific application.
- the soundproof hoods according to the first, second and third embodiments should be dimensioned so that the opening 30 receives the sound generated by the instrument as completely as possible.
- the soundproof hood according to the fourth embodiment is adapted to the dimensions of the workplace.
- the geometry of the opening 30 can be advantageously adapted to the geometry of the workplace to be encapsulated. It is conceivable here that the base surface of the truncated pyramid, and thus the opening 30 of the soundproof hood, has one or more convexly curved sides. This is particularly advantageous when the table top 80 of the workplace has one or more rounded sides.
- the side walls 20 are made single-walled. However, it is also possible, similar to the rear wall 10 to perform the side walls 20 double-walled, so that the Side walls 20 have an inner wall and an outer wall.
- an insulating element may be provided in an intermediate space between the inner wall and the outer wall of the side wall instead of the insulating layer 23 or in addition to the insulating layer 23. As a result, the sound insulation properties of the side walls can be further improved.
- Fig. 13 is a sectional view of a soundproof hood according to a fifth embodiment of the invention.
- the insulating layers 23 of the side walls 20 are each formed from three layers of insulating layers 23a, 23b, 23c.
- the remaining construction of the soundproofing hood shown in FIG. 13 corresponds to that of the soundproofing hood from FIG. 6.
- the multi-layer insulating layers 23 can also be used in the soundproof hoods according to the other embodiments in order to improve the soundproofing properties accordingly.
- the use of multi-layer insulating layers makes it possible to improve the soundproofing effect in coordination with the material that is used for the outer shell of the soundproofing hood, without negatively influencing the sound properties inside the soundproofing hood. If the outer shell of the soundproofing hood is made, for example, of a material with a low density and / or a lower layer thickness, such as plastic, the soundproofing effect of the side walls 20 of the soundproofing hood can be reduced by the low mass of the outer shell (compared to a version made of a material with a higher density).
- the insulating layer 23 is formed in multiple layers in FIG.
- first insulating layer 23a may further a lighter material such as polyurethane foam (with a density of 30 kg / m 3 ) are used, while for the second insulating layer 23b, which is in contact with the side wall 20, a Damping material is selected with higher density, for example composite foam (with a density of 120 kg / m 3 ).
- the second insulating layer 23b can provide an improved soundproofing effect due to the higher mass.
- NEN the sound properties in the interior of the soundproof hood, which are decisively influenced by the first insulating layer 23a, are maintained unchanged.
- a third insulating layer 23c is provided between the first insulating layer 23a and the second insulating layer 23b, which forms an intermediate layer between the two other insulating layer layers 23a, 23b and audibly reinforces the soundproofing effect caused by the insulating layer layers 23a, 23b ,
- the layer materials can be matched to the properties of the material used for the outer shell.
- bituminous heavy foil having a density of about 3,000 kg / m 3
- bitumen board having a density of about 2,000 kg / m 3
- a rear wall insulating layer layer 11a is applied on the side of the outer wall 11 facing the interior of the soundproof hood.
- the rear wall Dämm Anlagenlage I Ia is formed of a heavy material and formed in the present embodiment of bitumen heavy foil.
- the use of such a back wall insulating layer I Ia is particularly advantageous if the rear wall 11 is formed of a lightweight material such as plastic. By the back wall insulating layer I Ia, the mass of the rear wall 11 is increased, resulting in a better soundproofing effect.
- the rear wall Dämm slaughter I Ia can be used to improve the soundproofing effect of the rear wall 10 on the interior of the soundproof hood side facing the outer wall 11 in the soundproof hoods according to the other embodiments.
- a carrying handle 58 is attached, on which the soundproof hood can be grasped and carried. This facilitates the transport of the soundproof hood.
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- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Architecture (AREA)
- Multimedia (AREA)
- Electromagnetism (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Soundproofing, Sound Blocking, And Sound Damping (AREA)
- Building Environments (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102016118589.2A DE102016118589A1 (de) | 2016-09-30 | 2016-09-30 | Schallschutzhaube für Musiker und Büroangestellte |
PCT/EP2017/073967 WO2018060059A1 (de) | 2016-09-30 | 2017-09-22 | Schallschutzhaube für musiker und büroangestellte |
Publications (2)
Publication Number | Publication Date |
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EP3519643A1 true EP3519643A1 (de) | 2019-08-07 |
EP3519643B1 EP3519643B1 (de) | 2021-01-20 |
Family
ID=59923457
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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EP17771456.5A Active EP3519643B1 (de) | 2016-09-30 | 2017-09-22 | Schallschutzhaube für musiker und büroangestellte |
Country Status (3)
Country | Link |
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EP (1) | EP3519643B1 (de) |
DE (1) | DE102016118589A1 (de) |
WO (1) | WO2018060059A1 (de) |
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Publication number | Priority date | Publication date | Assignee | Title |
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GB2596162A (en) * | 2020-10-16 | 2021-12-22 | Studiospares Europe Ltd | Acoustic booth assembly |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE7440683U (de) * | 1975-05-07 | Isoge Isolierungsgesellschaft Fuer | ||
DE1769999U (de) | 1958-04-24 | 1958-07-10 | Rheinhold Und Mahle G M B H | Schallschluckkoerper. |
DE1193104B (de) | 1963-10-26 | 1965-05-20 | Sennheiser Electronic | Mikrofonhalterung |
DE3525662A1 (de) | 1984-08-21 | 1986-03-06 | Iron 4400 Münster Werther | Uebungskasten fuer saxophone und klarinetten |
DE4343008C2 (de) * | 1993-12-16 | 1997-03-06 | Daimler Benz Aerospace Ag | Resonanzabsorber |
DE29907006U1 (de) * | 1999-04-20 | 1999-07-22 | Schell, Josef, 74177 Bad Friedrichshall | Vorrichtung zur Schalldämmung bei einem Blasinstrument |
DE10117440A1 (de) | 2001-02-07 | 2002-11-07 | Fusban Ulrich F A | Schallschutzhaube |
DE112005002128T5 (de) | 2004-09-03 | 2007-10-11 | Kabushiki Kaisha Kobe Seiko Sho | Doppelwandstruktur |
FR2889616B1 (fr) * | 2005-08-02 | 2008-05-30 | Hutchinson Sa | Panneau acoustique du type a lame d'air |
-
2016
- 2016-09-30 DE DE102016118589.2A patent/DE102016118589A1/de not_active Withdrawn
-
2017
- 2017-09-22 WO PCT/EP2017/073967 patent/WO2018060059A1/de unknown
- 2017-09-22 EP EP17771456.5A patent/EP3519643B1/de active Active
Also Published As
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DE102016118589A1 (de) | 2018-04-05 |
WO2018060059A1 (de) | 2018-04-05 |
EP3519643B1 (de) | 2021-01-20 |
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