Portable vocal booth

Abstract

A portable vocal booth (1) adapted to at least partially enclose a volume (V), the portable vocal booth (1) comprising a roof (3), side walls (6, 7), a front wall (4) and a floor (8), characterized in that at least one of the roof (3), the side walls (6, 7), the front wall (4) and the floor (8) comprises sound absorbing material (16), a first sound-reflecting surface area (10a), and a second sound-reflecting surface area (10b), wherein the second surface area (10b) is offset relative to the first surface area (10a) and / or tilted relative to the first surface area (10a), wherein the first and second surface area (10a, 10b) is at least partially separated.

Description

PORTABLE VOCAL BOOTHTechnical field

[0001] The present invention relates generally to a portable vocal booth.Background art

[0002] Recording audio and / or practicing vocals, e.g. for singing and / or broadcasting purposes requires suitable equipment. Among such equipment in the art, portable vocal booths are generally used to attenuate sounds while practicing vocals and / or recording audio. Such vocal booths are generally useful for two purposes: not disturbing other persons while practicing / recording and / or conveniently setting up a temporary studio in a new location at a low cost point. Portable vocal booths currently on the market are excellent at attenuating sounds from inside the booth, but also to attenuate sounds from the ambient environment.

[0003] However, given that these vocal booths need to be relatively small, (e.g., L: 504-1150 mm H: 350-760 mm, W: 350-760 mm) in order for the vocal booth to be portable, several problems relating to the soundscape (in other words the acoustic environment perceived by a human user), recording quality, and user comfort emerges.

[0004] A problem is that recordings within portable vocal booths tend to amplify certain bass tones, i.e., sound waves having a frequency between e.g., 100-250 hz. A further problem concerns standing waves, i.e., sound waves bounding between surfaces inside of the portable vocal booths may create a resonance such as certain frequencies are amplified, leading to an uneven soundscape. A yet further problem is a muffled soundscape within the vocal booth, i.e., the small inner dimensions of the portable vocal booths produce modal frequencies which may cause the user to experience the soundscape within the vocal booth as muffled and “bassy”. Even yet further, there are problems concerning discomfort to users, i.e., conditions similar to what is colloquially known as “airplane ear” have been observed as the sound waves bounce within the portable vocal booths may cause discomfort for users.

[0005] The objective of the present invention is to at least partially alleviate or mitigate the above problems. It is no simple task to solve or even mitigate these problems as the dimensions of portable vocal booths need to be limited while still providing excellent sound attenuation.Summary of invention

[0006] It is therefore an object of the present disclosure to provide a portable vocal booth that at least partially alleviates or mitigates the above-mentioned problems alone or in combination.

[0007] This object is achieved by means of the subject matter of the independent claims of the present disclosure, wherein further aspects of the present invention are incorporated in the dependent claims.

[0008] According to a first aspect of the present invention it is provided a portable vocal booth adapted to at least partially enclose a volume, the portable vocal booth comprising a roof, side walls, a front wall and a floor, wherein at least one of the roof, the side walls, the front wall and the floor comprises sound absorbing material, a first sound-reflecting surface area, and a second sound-reflecting surface area, wherein the second surface area is offset relative to the first surface area and / or tilted relative to the first surface area, wherein the first and second surface area is at least partially separated.

[0009] It is to be understood that the first and second surface areas being sound-reflecting means that they are surface areas or surface sections of the vocal booth that are acoustically reflective. Thus, the first and second surface areas typically comprise a material that is sound reflective. The first and second surfaces may function as a sound reflective layer, a sound isolating layer or both, depending on material properties and positioning within the portable vocal booth. The first and / or second surface area may further be configured to contribute to structural rigidity of the vocal booth. The advantage of this embodiment is that a second sound-reflecting surface area arranged in an offset and / or tilt inwardly or outwardly from the volume relative to the first surface area will cause a more even pressure distribution within the volumewhile at the same time retaining excellent sound attenuation properties through the presence of sound absorbing material. The offset and / or tilt of the soundreflecting surface contributes to geometric irregularities within the portable vocal booth and thereby introduces variations in the acoustic path lengths within the volume of the vocal booth. These variations disrupt standing waves and reduce modal resonances, minimizing unwanted frequency buildup in confined spaces. As a result, the sound quality is improved, producing a clearer and more balanced audio experience in the small, enclosed volume. It is to be understood that the front wall of the vocal booth is the wall furthest away from the user of the vocal booth, at a front end of the vocal booth. Thus, the user will face an inner side of the front wall inside the vocal booth. Furthermore, the user will be positioned at the rear end of the vocal booth during use. The rear end may be open.

[0010] In various example embodiments the second surface area may be offset outwardly from the volume relative to the first surface area and / or may be tilted outwardly from the volume relative to the first surface area.

[0011] The advantage of these embodiments is that standing waves may be further reduced.

[0012] In various example embodiments at least one of the side walls may comprise said first and second surface areas.

[0013] The advantage of these embodiments is that standing waves may be further reduced.

[0014] In various example embodiments both side walls may comprise said first and second surface areas.

[0015] The advantage of these embodiments is that standing waves may be yet further reduced.

[0016] In various example embodiments the offset of the second surface area relative to the first surface area may be fixed.

[0017] The advantage of these embodiments is that a simple and cost effective portable vocal booth alleviating the aforementioned problems is provided.

[0018] In various example embodiments the offset of the second surface area relative to the first surface area may be adjustable.

[0019] The advantage of these embodiments is that a portable vocal booth that can be altered to accommodate for different pitches of vocals more finely such that a better the soundscape within the portable vocal booth is achieved.

[0020] In various example embodiments the second surface area may be tilted at a fixed angle relative to the first surface area.

[0021] The advantage of these embodiments is that a simple and cost effective portable vocal booth is provided which is very effective at alleviating the aforementioned problems.

[0022] In various example embodiments the second surface area may be tilted at an adjustable angle relative to the first surface area.

[0023] The advantage of these embodiments is that a portable vocal booth that can be altered to accommodate for different pitches of vocals more finely such that a better the soundscape within the portable vocal booth is achieved.

[0024] In various example embodiments the angle may be 1-89 degrees, preferably 30 degrees.

[0025] The advantage of these embodiments is that an angle is chosen such that the soundscape can be adjusted with regards to varying use-cases.

[0026] In various example embodiments the first and second surface may be at least partially separated such that a gap is provided, wherein the gap comprises sound absorbing material.

[0027] The advantage of these embodiments is that the sound emanating from the booth is reduced, thereby contributing to an improved acoustic environment.

[0028] In various example embodiments the gap may be provided in a direction towards a rear end of the portable vocal booth.

[0029] The advantage of these embodiments is that the sound attenuation towards the outside of the portable vocal booth is improved.

[0030] In various example embodiments the sound absorbing material may be provided in the entire gap.

[0031] The advantage of these embodiments is that sound attenuation is further improved.

[0032] In various example embodiments the roof, the side walls, the front wall and the floor may comprise material having a higher density than the sound absorbing material.

[0033] The advantage of these embodiments is that a more durable portable vocal booth is provided.

[0034] In various example embodiments the sound absorbing material may be an acoustic absorber preferably made of PET.

[0035] The advantage of these embodiments is that different materials can be combined to achieve more control over the soundwaves and a better overall soundscape.

[0036] In various example embodiments the second surface area may be of a different material than the first surface area.

[0037] The advantage of these embodiments is that different natural frequencies are provided to parts in the portable vocal booth, such that further self-resonating frequencies are cancelled out.

[0038] In various example embodiments the portable vocal booth may further comprise a rear curtain comprising the first and second surface area.

[0039] The advantage of these embodiments is that sound attenuation is further improved while maintaining a high-quality soundscape.

[0040] Further advantages with and features of the invention will be apparent from the following detailed description of preferred embodiments.Brief description of drawings

[0041] A more complete understanding of the abovementioned and other features and advantages of the present invention will be apparent from the following detailed description of preferred embodiments in conjunction with the appended drawings, wherein:Fig. 1 depicts a perspective view of a portable vocal booth according to at least one example embodiment of the present disclosure.Fig. 2 depicts a top view cross section of a portable vocal booth according to various example embodiments of the present disclosure.Fig. 3 depicts a perspective view of a portable vocal booth according to various example embodiments of the present disclosure.Fig. 4 depicts a top view cross section of a portable vocal booth according to various example embodiments of the present disclosure.Fig. 5 depicts a perspective view of a portable vocal booth according to various example embodiments of the present disclosure.Fig. 6 depicts a top view cross section of a portable vocal booth according to various example embodiments of the present disclosure.Fig. 7 depicts a top view cross section of a portable vocal booth according to various example embodiments of the present disclosure.Fig. 8 depicts a perspective view of a portable vocal booth according to various example embodiments of the present disclosure.Fig. 9 depicts a top view cross section of a portable vocal booth according to various example embodiments of the present disclosure.Fig. 10 depicts a top view cross section of a portable vocal booth according to various example embodiments of the present disclosure.Fig. 11 depicts a perspective view of a side wall of a vocal booth according to various example embodiments of the present disclosure.Fig. 12 depicts a perspective view of a side wall of portable vocal booth according to various example embodiments of the present disclosure.Fig. 13 depicts a perspective view of a side wall of a portable vocal booth according to various example embodiments of the present disclosure.Fig. 14 depicts a perspective view of a portable vocal booth according to various example embodiments of the present disclosure.Description of embodiments

[0042] The invention is not limited only to the embodiments described above and shown in the drawings, which primarily have an illustrative and exemplifying purpose. This patent application is intended to cover all adjustments and variants of the preferred embodiments described herein; thus, the present invention is defined by the wording of the appended claims and the equivalents thereof. Thus, the apparatus and system may be modified in all kinds of ways within the scope of the appended claims. It is also to be understood that a sound reflective material is herein defined as a material that primarily reflects incident sound waves rather than absorbing them. Such a material may be characterized by a sound absorption coefficient of 0.3 or lower, preferably 0.2 or lower, across at least a part of the relevant frequency range (100Hz - 4kHz). Examples include glass, concrete, MDF and composite fiber panels. Another example of sound reflective material is a molded polyester fiberboard. Although partially sound absorbing, such materials primarily serve to reflect incident sound waves and may also contribute to structural rigidity and acoustic isolation. A sound reflective material is often also sound isolating depending on its thickness. A sound isolating material is herein defined as a material that primarily blocks the transmission of airborne sound from one space to another. It typically has a transmission loss of at least 25 dB, or a sound transmission class (STC) rating of 30 or higher, as measured according toISO 10140 and ISO 717-1 . A sound isolating material is typically dense and may have a sound absorption coefficient lower than 0.2. A sound absorbing material is herein defined as a material that reduces reflected sound energy within a space. This may be characterized by a sound absorption coefficient of 0.3 or higher, measured in accordance with ISO 354.

[0043] Figure 1 depicts a perspective view of a portable vocal booth 1 according to various example embodiments of the present disclosure. As depicted, the vocal booth 1 may enclose a volume V at least partially and may comprise a roof 3, a front wall 4 (not shown in figure 1 ), side walls 6, 7, and a floor 8. In other words, the portable vocal booth 1 may comprise said structural elements / parts in order to accommodate a volume (space) suitable for a singer’s and / or speaker’s head when in use.

[0044] The thickness of the side walls 6, 7 may be 5-200 mm. The thickness of the roof 3 may be 5-200 mm. The thickness of the floor may be 5-200 mm. The thickness of the front wall may be 20-300 mm. It is appreciated that in use, the example embodiments of portable sound booths 1 described herein may be clad in a textile fabric. The inside of the vocal booth 1 may preferably be clad in a porous textile such as a mesh fabric, a non-woven fabric, a microporous film, or the like, and varying amount of sound absorbing material 16 as described herein. The outside of the vocal booth may preferably be clad in a textile, leather and / or polyurethane. Alternatively, the inside and outside of the vocal booth 1 may be clad in the same material.

[0045] The side walls 6, 7 may comprise e.g., high density fiberboard such as plywood. The floor 8 may comprise high density fiberboard such as plywood, or polyester foam, or the like. An elastic sealing layer may be provided to the roof, e.g. made of an elastomer such as rubber. The roof 3 may comprise plastic, an elastomer, a low density fiberboard, a high density fiberboard, or the like. It is appreciated that various possible materials and combinations conceivably provide adequate functioning of the portable vocal booth 1 . It is to be understood that any of the roof 3, the side walls 6, 7, the front wall 4, and the floor 8 may comprise a sound reflective material. Such sound reflective material may also be sound isolating.

[0046] In figure 1 , the side wall 6, also known as a side panel, may comprise sound absorbing material 16. In other words, sound absorbing material 16 may be arranged or provided in at least portion of the side wall 6. As will be evident from other embodiments, the sound absorbing material 16 may be comprised in a similar manner in at least one of the roof 3, the side walls 6, 7, the front wall 4, and the floor 8. The front wall 4 may comprise high-density fiberboard, low density fiberboard, polyester foam, or the like. Various combinations are possible, e.g. the sound absorbing material 16 may be provided in both side walls 6, 7 or all of the roof 3, the side walls 6, 7, the front wall 4, and the floor 8.

[0047] The roof 3, the front wall 4, the side walls 6, 7, and the floor 8, i.e. the structural elements of the portable vocal booth 1 , may comprise a material such as plywood. Different materials for these structural elements are conceivable, i.e. the materials chosen may vary from element to element as well. The sound absorbing material 16 may be an acoustic absorber as commonly used in the art. The sound absorbing material 16 may preferably be made of polyethylene terephthalate, i.e. PET, e.g. PET foam, Polyurethane, i.e. Pll foam, polyester foam, cotton, wool, rockwool, a natural fiber material, flax, or the like. In principle, any material which traps and / or dissipates sound waves may function accordingly. The sound absorbing material 16 may be lightweight, i.e. may have a density of between 50- 350 kg / m3. At least one, some of, or all of the structural elements, i.e. the roof 3, the front wall 4, the side walls 6, 7, and the floor 8, may in various example embodiments be made entirely of sound absorbing material 16. The different parts may comprise different or the same type of sound absorbing materials as described herein.

[0048] As depicted in figure 1 , the side walls 6 may comprise a first surface area 10a and a second surface area 10b. The first surface area 10a and the second surface area 10b are sound-reflecting surface areas. In various example embodiments depicted in figure 1 , the second surface area 10b may be offset outwardly from the volume V relative to the first surface area 10a. In other words, the second surface area 10b may be a considered a lid.

[0049] An offset distance B of the second surface area 10b relative to the first surface area may be 1-100 mm. In principle, however, a small offset distance B,such as 1 mm will attenuate sound waves more than a larger offset distance B, such as 100 mm. However, a larger offset distance B will reduce the aforementioned issues of discomfort for the user to a larger extent. As such a tradeoff between sound attenuation and comfort is to be expected. Tests have shown that an offset distance B of 50 mm provides a very good tradeoff between sound attenuation, sound quality and user comfort for most vocal frequencies.

[0050] The first and second surface areas 10a, 10b may be at least partially separated. For manufacturing purposes, a portion of the side wall 6 may be removed by conventional means and processes (e.g. cutting, sawing, milling) such that the second surface area 10b is retrieved. In such cases, both surface areas 10a, 10b may be made of the same material. However, it may also be possible that the second surface area 10b is manufactured from a different material than the first surface area 10a. In other words, the first surface area 10a may comprise a first portion of the side wall 6, whereas the second surface area 10b may constitute a second portion of the side wall 6. As will be seen in various embodiments described herein, the first and second surface areas 10a, 10b may be comprised in a similar manner in at least one of the roof 3, the side walls 6, 7, the front wall 4, and the floor 8, or combinations thereof.

[0051] Figure 1 depicts a singular second surface area 10b that is offset from the first surface area 10a. It should be appreciated that multiple second surface areas 10b may be arranged and are of course included in the many modifications and variations of the present invention.

[0052] Figure 1 depicts that the sound absorbing material 16 may be comprised between the first surface area 10a and the second surface area 10b, in other words in a gap 11 provided by the separation of the first and second surface areas 10a, 10b. The sound absorbing material 16 depicted in figure 1 may be provided in the entire gap 11 , in other words completely filing out any space between the first and second surface areas 10a, 10b. However, it is conceivable that only a portion of the space or gap 11 between the first and second surface areas 10, 10b are provided with the sound absorbing material 16.

[0053] Figure 2 depicts a top view of a cross section of a portable vocal booth 1 according to various example embodiments of the present disclosure. Similar to figure 1 , the vocal booth 1 may comprise a first sound-reflecting surface area 10a and a second sound-reflecting surface area 10b, wherein the second soundreflecting surface area 10b may be offset outwardly from the volume V relative to the first surface area 10a. Supports (not shown) may be used to maintain a fixed distance of the second surface area 10b in relation to the first surface area 10a. However, it is also possible that the second surface area 10b is attached to the sound absorbing material 16 via e.g. an adhesive.

[0054] Figure 3 depicts a perspective view of a portable vocal booth 1 according to various example embodiments of the present disclosure. Descriptions of shared aspects, alternatives and features already depicted in figures 1 -2 will not be repeated here. As seen in figure 3, a side wall 6 may comprise a sound absorbing material 16, a first sound-reflecting surface area 10a, and a second sound-reflecting surface area 10b. The second surface area 10b may be tilted outwardly from the volume V relative to the first surface area 10a. In other words, the second surface area 10b may be a considered a flap.

[0055] The tilt of the second surface area 10b may be represented by an angle A, which may be between 1-89 degrees, preferably about 30 degrees. Depending on the chosen material and the user preferences, the desired angle A may vary. In principle, however, a small angle A, such as 1 degree will attenuate soundwaves more than a larger angle A, such as 89 degrees. However, a larger angle A will reduce the aforementioned issues of discomfort for the user to a larger extent. As such a tradeoff between sound attenuation and user comfort is to be expected. Tests have shown that an angle A of 30 degrees provides a very good tradeoff between sound attenuation, sound quality, and user comfort for most vocal frequencies.

[0056] The first and second surface area 10a, 10b may be partially separated. Similar to embodiments depicted in figures 1-2, the sound absorbing material 16 may be comprised between the first surface area 10a and the second surface area 10b, in other words in a gap 11 provided by the separation of the first and second surface areas 10a, 10b. The sound absorbing material 16 depicted infigure 3 may be provided in the entire gap 11 , in other words completely filing out any space between the first and second surface areas 10a, 10b. However, it is conceivable that only a portion of the space or gap 11 between the first and second surface areas 10, 10b are provided with the sound absorbing material 16.

[0057] Figure 4 depicts a top view of a cross section of a portable vocal booth 1 according to various example embodiments of the present disclosure. Similar to figure 3, the portable vocal booth 1 may comprise a first sound-reflecting surface area 10a and a second sound-reflecting surface area 10b, wherein the second sound-reflecting surface area is tilted outwardly from the volume V (not shown) relative to the first surface area 10a. Supports (not shown) may be used to maintain a fixed angle A of the second surface area 10b in relation to the first surface area 10a. However, it is also possible that the second surface area 10b is attached to the sound absorbing material 16 via e.g. an adhesive or that the second surface area 10b is made of the same part as the first surface area 10a and is bent at an angle A outwards from the volume V. The sound absorbing material 16 may also be removably attached to any of the structural elements where it is comprised, i.e. to at least one of the roof 3, the side walls 6, 7, the front wall 4, and the floor 8, or combinations thereof.

[0058] Figure 5 depicts a perspective view of a portable vocal booth 1 according to various example embodiments of the present disclosure. Similar features and aspects already depicted in figures 1-4 will not be repeated here. As seen in figure 5, at least one of the side walls 6, 7 may comprise a first sound-reflecting surface area 10a, and a second sound-reflecting surface area 10b. The second surface area 10b may be tilted inwardly towards the volume V relative to the first surface area 10a. In other words, the second surface area 10b may be a considered a flap. Essentially, figure 5 discloses an embodiment of the invention similar to that of figure 3, with the key difference of the inward tilt of the second surface area 10b as opposed to the outward tilt of the second surface area 10b in figure 3. It is important to note that while figure 5 illustrates the concept of a second surface area 10b inwardly towards to volume V relative to the first surface area 10a, it also entirely possible that the second surface area 10b may be offset inwardly towards the volume V relative to the first surface area 10a. In other words, an embodiment similar to figure 1 is instead possible, where the differencelies in inward / outward offsetting of the second surface area 10b in relation to the first surface area 10a. Tilting and / or offsetting a second surface area 10b both yield a noticeable effect with regards to the objectives of the invention stated above.

[0059] Figure 6 depicts a top view of a cross section of a portable vocal booth 1 according to various example embodiments of the present disclosure. Similar to figure 5, the vocal booth 1 may comprise a first sound-reflecting surface area 10a and second sound-reflecting surface area 10b provided on a side wall 6. As seen, the second surface area 10b may be tilted inwardly towards the volume V relative to the first surface area 10a.

[0060] As described previously, any one of, more than one, or any combinations of the roof 3, the side walls 6, 7, the front wall 4, and the floor 8 may be provided with first and second sound-reflecting surfaces 10a, 10b which may be offset and / or tilted outwardly from the volume V will achieve the objective of the invention. Figure 7 depicts a top view perspective of a portable vocal booth 1 of various example embodiments illustrating this principle, wherein a side wall 6 may be provided with first and second sound-reflecting surfaces 10a, 10b which may be offset outwardly from the volume V, and the opposing side wall 7 may be provided with first and second sound-reflecting surfaces 10a, 10b which may be titled outwardly from the volume V.

[0061] In various example embodiments, a multiple of first and second soundreflecting surface areas 10a, 10b may be provided on any one of, more than one, or any combinations of the roof 3, the side walls 6, 7, the front wall 4, and the floor 8. Figure 8 depicts a perspective view of a portable vocal booth 1 according to various example embodiments illustrating this principle. In figure 8, a side wall 6 may be provided with three second sound-reflecting surface areas 10b which may be tilted outwardly from the volume V relative to the first sound-reflecting surfaces 10a. It is understood that at least one of these three second surface areas 10b, or all, may be offset outwardly from the volume V relative to the first surface areas 10a instead. If a plurality of second surface areas 10b are present, the size of the second surface areas 10b may be the uniform or different, or any combinations thereof. It is to be understood at least one of the second surface areas 10b maybe tilted inwardly towards the volume V relative to a corresponding first surface area 10a.

[0062] In various example embodiments, at least one second sound-reflecting surface area 10b may be offset and / or tilted relative to at least one first soundreflecting surface area 10a, wherein the second surface area 10b is neither offset and / or tilted inwardly or outwardly to / from the volume V relative to the first surface area 10a. Figure 9 depicts a perspective view of a portable vocal booth 1 according to various example embodiments which illustrates this principle. As also seen in figure 10, a plurality of second surface areas 10b are depicted as tilted within a thickness of a structural part, e.g. a side wall 6, 7. Offsetting second surface area 10b in accordance with the teachings herein is also possible. Sound absorbing material may be provided to each of the second surface areas 10b.

[0063] In various example embodiments, the offset of a second sound-reflecting surface area 10b relative to a first sound-reflecting surface area 10a may be adjustable. Figure 11 depicts a perspective view of a portable vocal booth 1 according to various example embodiments which illustrates this principle. It should be appreciated that the side wall 6 is used to represent the principle only for illustrational purposes, as the first and second surface areas 10a, 10b may be comprised in a similar manner in at least one of the roof 3, the side walls 6, 7, the front wall 4, and the floor 8, or combinations thereof. The adjustability of the offset distance B may be achieved through one or more supports (not shown), each support comprising telescopic mechanism, a folding mechanism or having an inherent elasticity / compressibility. Further, the adjustability of the offset distance B may be achieved through the inherent elasticity of the sound absorbing material 16 providing a bridge between the first and second surface areas 10a, 10b, or the like.

[0064] In various example embodiments, a second sound-reflecting surface area 10b may be tilted at an adjustable angle A relative to a first sound-reflecting surface area 10a. Figure 12 depicts a perspective view of a side wall 6 of a vocal booth 1 according to various example embodiments which illustrates this principle. It should be appreciated that the side wall 6 is used to represent the principle only for illustrational purposes, as the first and second sound-reflecting surface areas10a, 10b may be comprised in a similar manner in at least one of the roof 3, the side walls 6, 7, the front wall 4, and the floor 8, or combinations thereof. The adjustability of the angle A of the second surface area A may be achieved through one or more supports (not shown), each support comprising telescopic mechanism, a folding mechanism, or having an inherent elasticity / compressibility. Further options include a hinge, a swivel, a burdock band, buttons, or utilizing the inherent elasticity of material of the first and second surfaces 10a, 10b, the inherent elasticity of the sound absorbing material 16, or the like. E.g., if the second surface area 10b is connected to the first surface area 10a, adjustability of the angle A may be achieved by pivoting the second surface area 10b around its connection point with the first surface area 10a.

[0065] Figure 13 depicts a perspective view of various example embodiments of a side wall 6 wherein the second sound-reflecting surface area 10b is removably attachable to the first sound-reflecting surface area 10a. Yet again, it should be appreciated that the side wall 6 is used to represent the principle only for illustrational purposes, as the removably attachable second surface areas 10b may be comprised in a similar manner in at least one of the roof 3, the side walls 6, 7, the front wall 4, and the floor 8, or combinations thereof. Optionally, the second surface area 10b is of a different material than the first surface area 10a.

[0066] Figure 14 a perspective view of a portable vocal booth 1 according to various example embodiments of the present disclosure. The depicted vocal booth 1 of figure 12 may comprise a rear curtain 18 comprising the first and second sound-reflecting surface area 10a, 10b. It is appreciated that further second surface areas 10b may be comprised in a similar manner in at least one of the roof 3, the side walls 6, 7, the front wall 4, and the floor 8, or combinations thereof. The second surface area 10b provided on the rear curtain 18 may be adjustably or fixedly offset and / or tilted in accordance with the teachings herein. While not shown in figure 14, it is appreciated the second surface area 10b may be offset and / or tilted inwardly towards the volume V relative to the first surface area 10a. A plurality of second surface areas 10b may be provided on the rear curtain 18, where the second surface areas 10b may be similar, different or combinations thereof in accordance with the teachings herein.

[0067] It is appreciated that fixedly attached second sound-reflecting surface areas 10b or removably attachable second sound-reflecting surface areas 10b may be offset or tilted relative to the first sound-reflecting surface area 10a as described herein. Further, any fixedly attached or removably attached second surface area 10b may tilted at an adjustable angle A and / or at an adjustable offset described herein. The offset or tilting may be done inwardly and / or outwardly in various combinations.

[0068] It is appreciated that any second surface area 10b may be simultaneously configured to be offset and tilted relative to the first surface area 10a. It is evident that the second surface area 10b may be tilted at an adjustable angle A while at the same time may be provided with a fixed offset, or vice versa.

[0069] The person skilled in the art realizes that the present disclosure by no means is limited to the preferred embodiments described above. On the contrary, many modifications and variations are possible within the scope of the appended claims. It should further be noted that the drawings not necessarily are to scale, and dimensions of certain features may have been exaggerated for the sake of clarity. Emphasis is instead placed upon illustrating the principle of the embodiments herein. Additionally, in the claims, the word “comprising” does not exclude other elements or steps, and the indefinite article “a” or “an” does not exclude a plurality.

[0070] Various examples have been described. These and other examples are within the scope of the following claims.

Claims

CLAIMS1 . A portable vocal booth (1 ) adapted to at least partially enclose a volume (V), the portable vocal booth (1 ) comprising a roof (3), side walls (6, 7), a front wall (4) and a floor (8), characterized in that at least one of the roof (3), the side walls (6, 7), the front wall (4) and the floor (8) comprises sound absorbing material (16), a first sound-reflecting surface area (10a), and a second sound-reflecting surface area (10b), wherein the second surface area (10b) is offset relative to the first surface area (10a) and / or tilted relative to the first surface area (10a), wherein the first and second surface area (10a, 10b) is at least partially separated.

2. The portable vocal booth (1 ) according to claim 1 , wherein the second surface area (10b) is offset outwardly from the volume (V) relative to the first surface area (10a) and / or tilted outwardly from the volume (V) relative to the first surface area (10a).

3. The portable vocal booth (1 ) according to claims 1 or 2, wherein at least one of the side walls (6, 7) comprises said first and second surface areas (10a, 10b).

4. The portable vocal booth (1 ) according to claim 3, wherein both side walls (6, 7) comprise said first and second surface areas (10a, 10b).

5. The portable vocal booth (1 ) according to any one of the preceding claims, wherein the offset of the second surface area (10b) relative to the first surface area (10a) is fixed.

6. The portable vocal both (1 ) according to any one of the preceding claims, wherein the offset of the second surface area (10b) relative to the first surface area (10a) is adjustable.

7. The portable vocal booth (1 ) according to any one of the preceding claims, wherein the second surface area (10b) is tilted at a fixed angle (A) relative to the first surface area (10a).

8. The portable vocal booth (1 ) according to any one of the preceding claims, wherein the second surface area (10b) is tilted at an adjustable angle (A) relative to the first surface area (10a).

9. The portable vocal booth (1 ) according to any one of the preceding claims, wherein the angle (A) is 1-89 degrees.

10. The portable vocal booth (1 ) according to any of the preceding claims, the first and the second surface area (10a, 10b) is at least partially separated such that a gap (11 ) is provided, wherein the first and second surface area (10a, 10b) is at least partially separated such that a gap (11 ) is provided, wherein the gap (11 ) comprises sound absorbing material (16).11 . The portable vocal booth (1 ) according to claim 10, wherein the gap (11 ) is provided in a direction toward a rear end of the portable song booth (1 ).

12. The portable vocal booth (1 ) according to any one of the preceding claims, wherein the roof (3), the side walls (6, 7), the front wall (4) and the floor (8) have a higher density than the sound absorbing material (16).

13. The portable vocal booth (1 ) according to any one of the preceding claims, wherein the sound absorbing material (16) is an acoustic absorber preferably made of PET.

14. The portable vocal booth (1 ) according to any one of the preceding claims, wherein the sound absorbing material (16) is provided in the entire gap (11 ).

15. The portable vocal booth (1 ) according to any of the preceding claims, wherein the second surface area (10b) is of a different material than the first surface area (10a).

16. The portable vocal booth (1 ) according to any one of the preceding claims, the portable vocal booth (1 ) further comprising a rear curtain (18) comprising the first and second surface area (10a, 10b).

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