KR101756335B1 - Apparatus for reducting floor noise - Google Patents
Apparatus for reducting floor noise Download PDFInfo
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- KR101756335B1 KR101756335B1 KR1020150117060A KR20150117060A KR101756335B1 KR 101756335 B1 KR101756335 B1 KR 101756335B1 KR 1020150117060 A KR1020150117060 A KR 1020150117060A KR 20150117060 A KR20150117060 A KR 20150117060A KR 101756335 B1 KR101756335 B1 KR 101756335B1
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- South Korea
- Prior art keywords
- control signal
- noise
- impact sound
- slab
- processor
- Prior art date
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Classifications
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- 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
- E04B1/8209—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 sound absorbing devices
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- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
- G10K11/00—Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
- G10K11/16—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
- G10K11/175—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general using interference effects; Masking sound
- G10K11/178—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general using interference effects; Masking sound by electro-acoustically regenerating the original acoustic waves in anti-phase
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- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Electromagnetism (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Multimedia (AREA)
- Soundproofing, Sound Blocking, And Sound Damping (AREA)
Abstract
A noise control apparatus capable of reducing interlayer noise according to the present invention includes an acceleration sensor for sensing a vibration signal generated by a heavy impact sound, a processor for generating a reverse phase control signal based on the sensed vibration signal and based on an active control filter, A speaker for outputting the control signal, and a microphone for measuring the error between the full impact sound and the control signal, wherein the processor feeds back the error of the heavy impact sound and the control signal measured by the microphone to the active control filter, Adjust the control signal.
Description
The present invention relates to a noise control apparatus capable of reducing interlayer noise.
Due to the increase in population density due to urbanization, the proportion of households living in apartment houses such as apartments, officetels, and villas is steadily increasing.
Interlayer noise refers to noise pollution where sound from one floor of the apartment house is transmitted to other floor furniture. It is recognized that this kind of interlayer noise is the biggest problem than the air transmission sound transmitted through the air as the floor sound generated in the upper layer or the solid sound transmitted to the lower layer through the solid structure such as floor and wall.
Interlayer noise is generated by vibration of the slab caused by floor impact generated in the upper layer and vibration of air in the lower layer. This kind of interlayer noise has the characteristic that the noise of concrete or steel which is the construction material of the apartment house is easily transmitted to the adjacent household because the vibration damping ability of itself is very low.
Accordingly, the Ministry of Land, Transport and Maritime Affairs has established the 'Housing Construction Standard, etc.' So that the thickness of the slab can be constructed over a certain thickness, and the flooring structure such as floored floor is constructed to minimize the interlayer noise problem. Also, according to the impact characteristics, it is divided into light impact sound and heavy impact sound to evaluate the performance from 1 to 4 grade respectively, thereby promoting a structure capable of minimizing the interlayer noise.
In this case, a light impact sound is a floor impact sound generated by a relatively light and hard impact generated when a small drop, a high-heel sound, or a moving furniture is transmitted, and is a sound of a high sound level transmitted to the lower layer. A heavy impact sound is a floor impact sound generated by a heavy and soft impact, such as when a child jumps, and has a low sound quality, a large impact force, and a long acoustic duration.
In spite of various efforts such as increasing the thickness of the slab or inserting a sound absorbing material for the reduction of the interlayer noise, the heavy noise impact of the interlayer noise has not been reduced. In other words, the lightweight impact sound has been greatly reduced due to structural improvement of the slab after the increase of the slab thickness and insertion of the sound absorbing material, but the effect of the heavy impact sound is very poor. Especially, in the case of old apartment houses with a slab thickness of 150 mm or less in addition to new apartment buildings, there is a problem that the recently developed floor impact sound reduction materials can not satisfy legal standards.
As described above, the passive noise control technique is to increase the thickness of the floor slab or decrease the noise through the construction of the sound absorbing material. In contrast to this, the method of canceling the noise wave using the superposition principle of the wave, Control (Active Noise Control, ANC). In other words, the active noise control technique is a technique of analyzing the waveform of sound at the place where noise is introduced, and analyzing it in real time to generate noise, thereby destroying noise by destructive interference.
However, in the active noise control apparatus according to the related art, in order to reduce the absolute amount of noise felt by the receiver, the entire noise introduced from the outside or generated in the noise source is to be canceled, and the control effect on the intermittent noise is insufficient Do.
In this regard, Korean Patent Laid-Open Publication No. 2014-0125969 (entitled "Headset for noise reduction") discloses a technique for blocking external noise by using an active noise control method and a passive noise control method.
An embodiment of the present invention is to provide a noise control device capable of reducing noise during a floor impact by reducing a weight impact sound by generating a reverse phase control signal based on a vibration signal detected from an acceleration sensor when a heavy impact sound is generated.
It should be understood, however, that the technical scope of the present invention is not limited to the above-described technical problems, and other technical problems may exist.
According to a first aspect of the present invention, there is provided a noise control apparatus capable of reducing interlayer noise, including an acceleration sensor for sensing a vibration signal generated by a heavy impact sound, A processor for generating a reverse phase control signal based on the active control filter, a speaker for outputting the control signal, and a microphone for measuring the error of the control signal and the full impact sound. At this time, the processor adjusts the control signal by feeding back the error of the weight impact sound and the control signal measured by the microphone to the active control filter.
According to any one of the above-described objects of the present invention, it is possible to reduce the heavy impact sound of the low sound level which is difficult to control by the passive noise control technique.
Also, it can be installed without being influenced by the structure of the building, and it can be easily installed in existing buildings as well as new buildings.
1 is a block diagram of a noise control apparatus according to an embodiment of the present invention.
2 is a top perspective view of a noise control apparatus according to an embodiment of the present invention.
3 is a bottom perspective view of a noise control apparatus according to an embodiment of the present invention.
4 is a view illustrating an example in which a noise control apparatus according to an embodiment of the present invention is installed on a ceiling.
5 is a diagram illustrating an example in which a noise control apparatus according to an embodiment of the present invention is installed on the floor.
Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those skilled in the art can easily carry out the present invention. It should be understood, however, that the present invention may be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. In the drawings, the same reference numbers are used throughout the specification to refer to the same or like parts.
Throughout this specification, when a part is referred to as being "connected" to another part, it is not limited to a case where it is "directly connected" but also includes the case where it is "electrically connected" do.
Throughout this specification, when a member is " on " another member, it includes not only when the member is in contact with the other member, but also when there is another member between the two members.
Throughout this specification, when an element is referred to as "including " an element, it is understood that the element may include other elements as well, without departing from the other elements unless specifically stated otherwise. The terms "about "," substantially ", etc. used to the extent that they are used throughout the specification are intended to be taken to mean the approximation of the manufacturing and material tolerances inherent in the stated sense, Accurate or absolute numbers are used to help prevent unauthorized exploitation by unauthorized intruders of the referenced disclosure. The word " step (or step) "or" step "used to the extent that it is used throughout the specification does not mean" step for.
1 is a block diagram of a
1, a
1 may be implemented in hardware such as software or an FPGA (Field Programmable Gate Array) or ASIC (Application Specific Integrated Circuit), and may perform predetermined roles can do.
However, 'components' are not meant to be limited to software or hardware, and each component may be configured to reside on an addressable storage medium and configured to play one or more processors.
Thus, by way of example, an element may comprise components such as software components, object-oriented software components, class components and task components, processes, functions, attributes, procedures, Routines, segments of program code, drivers, firmware, microcode, circuitry, data, memory, data structures, tables, arrays, and variables.
The components and functions provided within those components may be combined into a smaller number of components or further separated into additional components.
The
At this time, the
The
The
The
Meanwhile, the
In this case, the living noise refers to the noise generated in addition to the heavy impact sound, which is generated in daily life such as watching TV and talking.
2 to 3, the
The
The
Specifically, the
In addition, the
The
Meanwhile, the
Referring to FIG. 4, the
At this time, the
Meanwhile, the
In the noise control apparatus according to the related art, the noise is mainly controlled by applying the LMS (Least Mean Square) algorithm without considering the linear relationship between the heavy impact sound and the vibration signal. However, The
In other words, in the conventional active noise control technique, it is not necessary to consider the error convergence time because the continuously generated noise is to be canceled. However, in the case of the interlayer noise, the convergence speed is required because the intermittent noise occurs and the duration is not long. There was a problem that it was not considered.
Alternatively, the
In order to apply such a deterministic algorithm, the
Herein, the
For example, the
The program stored in the
In addition, the
As described above, the
5, when the
Referring to FIG. 1 again, in a
In addition, when the living sound is detected by the
In addition, the
Meanwhile, the
The
At this time, the operation information may be any information for controlling the detailed functions such as the current operation state, the operation mode, and the setting of the
Further, the noise control information may include at least one of vibration and heavy impact sound occurrence information, and noise control history. For example, the vibration and heavy impact sound generation information may be information such as the intensity of vibration, the number of times, the intensity of heavy impact sound, frequency, frequency band, and the noise control history may be information such as monthly generated noise amount, . The generated noise control information may be transmitted to a management server (not shown) that manages the
At this time, the
One embodiment of the present invention may also be embodied in the form of a computer program stored on a medium executed by a computer or a recording medium including instructions executable by the computer. Computer readable media can be any available media that can be accessed by a computer and includes both volatile and nonvolatile media, removable and non-removable media. In addition, the computer-readable medium may include both computer storage media and communication media. Computer storage media includes both volatile and nonvolatile, removable and non-removable media implemented in any method or technology for storage of information such as computer readable instructions, data structures, program modules or other data. Communication media typically includes any information delivery media, including computer readable instructions, data structures, program modules, or other data in a modulated data signal such as a carrier wave, or other transport mechanism.
While the methods and systems of the present invention have been described in connection with specific embodiments, some or all of those elements or operations may be implemented using a computer system having a general purpose hardware architecture.
It will be understood by those skilled in the art that the foregoing description of the present invention is for illustrative purposes only and that those of ordinary skill in the art can readily understand that various changes and modifications may be made without departing from the spirit or essential characteristics of the present invention. will be. It is therefore to be understood that the above-described embodiments are illustrative in all aspects and not restrictive. For example, each component described as a single entity may be distributed and implemented, and components described as being distributed may also be implemented in a combined form.
The scope of the present invention is defined by the appended claims rather than the detailed description and all changes or modifications derived from the meaning and scope of the claims and their equivalents are to be construed as being included within the scope of the present invention do.
10: Slab 20: Finish panel
100: Noise control device 110: Acceleration sensor
120, 120 ':
140:
160:
180, 180 ': Damper mount
Claims (10)
An acceleration sensor for sensing the vibration signal generated by the heavy impact sound,
A processor that receives the sensed vibration signal and generates a reverse phase control signal based on the active control filter,
An acoustic-based woofer speaker for outputting the control signal;
And a microphone for measuring an error between the heavy impact sound and the control signal,
The processor adjusts the control signal by feeding back the error of the weight impact sound and the control signal measured by the microphone to the active control filter,
The processor generates the control signal based on a property value of a slab of a ceiling or a sidewall previously input for shortening an error convergence time of an adaptive filter for noise control,
And corrects the characteristic value of the slab based on the waveform of the vibration signal and the control signal, and generates the control signal based on the corrected characteristic value of the slab.
Further comprising an enclosure for mounting the processor, the amplifier and the speaker,
Wherein one end face of the enclosure is formed with an opening into which an output portion of the speaker is inserted,
And one or more damper mounts are coupled to the other end surface of the enclosure for vibrating the vibrations generated by the heavy impact sound and the vibrations generated in the speaker as the control signal is outputted.
Wherein the acceleration sensor is disposed in a slab of a ceiling or a side wall,
Wherein the damper mount is attached to an upper end of the enclosure and is coupled to the slab of the ceiling.
Wherein the enclosure is disposed such that the loudspeaker is positioned outside a finishing panel spaced apart from the ceiling slab,
The microphone being formed on the enclosure or formed to be independent of the enclosure,
And is exposed to the outside of the finishing panel.
Wherein the characteristic value of the slab includes linear relationship information of a heavy impact sound and a vibration signal,
Wherein the processor generates the control signal based on a deterministic algorithm based on the linear relationship information.
Wherein the processor generates the control signal based on the deterministic algorithm without feedback to the active control filter when living noises distinct from the heavy impact sound are detected by the microphone.
Wherein the acceleration sensor is disposed on a ceiling or a slab of a side wall, and the damper mount is located on the floor.
Wherein the processor includes a low pass filter for filtering life noise distinct from the heavy impact sound.
Further comprising a communication module for transmitting and receiving data to and from the user terminal,
Receiving operation information input by a user on an application installed in the user terminal through the communication module,
The processor generates noise control information and transmits the noise control information to the user terminal through the communication module,
Wherein the noise control information includes at least one of vibration, heavy impact sound occurrence information, and noise control history.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1020150117060A KR101756335B1 (en) | 2015-08-20 | 2015-08-20 | Apparatus for reducting floor noise |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1020150117060A KR101756335B1 (en) | 2015-08-20 | 2015-08-20 | Apparatus for reducting floor noise |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| KR20170022284A KR20170022284A (en) | 2017-03-02 |
| KR101756335B1 true KR101756335B1 (en) | 2017-07-11 |
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| Application Number | Title | Priority Date | Filing Date |
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| KR1020150117060A KR101756335B1 (en) | 2015-08-20 | 2015-08-20 | Apparatus for reducting floor noise |
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| KR (1) | KR101756335B1 (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR102392460B1 (en) * | 2019-07-31 | 2022-04-29 | 구본희 | Apparatus and method of reducing noise |
| US20220277723A1 (en) * | 2019-07-31 | 2022-09-01 | Bonn-Hee Goo | Noise reduction device and method |
| EP4191985A4 (en) | 2020-11-06 | 2024-01-24 | Samsung Electronics Co., Ltd. | Electronic device comprising noise sensing module |
| KR102228970B1 (en) * | 2020-11-12 | 2021-03-17 | 성창화 | Noise control apparatus controlling external noise by being combined with glass of window or shassis |
| KR102621300B1 (en) * | 2021-01-10 | 2024-01-05 | 김민준 | Vibration to reduce noise between floors in apartments using active noise canceling technology |
| KR102293075B1 (en) * | 2021-03-10 | 2021-08-25 | 주식회사 시스템앤솔루션 | Window having noise control function |
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| Publication number | Publication date |
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| KR20170022284A (en) | 2017-03-02 |
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