TW202030722A - Sound processing device and method - Google Patents

Abstract

The sound processing device and method are applied to a space in which at least one noise source is included, comprising : a sound sensing module for generating a set of sensing signals according to a sound wave to be processed emitted by the noise source; a sound generating module, the signal is coupled to the sound sensing module, and configured to generate a directional sound wave according to the set of sensing signals, the directional sound wave intersecting the sound wave to be processed in a predetermined area, so that The intensity of the to-be-processed sound wave after the preset area is lowered.

Description

Sound processing device and method

This case is a sound processing device and method, especially a sound processing device applied to a place that requires noise reduction and sound insulation.

With the rapid population growth and high residential density, noise pollution often plagues people. Therefore, how to use various devices and equipment to create a quiet space in which noise is isolated has become a technological means that many manufacturers have focused on. However, common sound insulation walls or sound insulation materials usually have too large volume and weight, which is not conducive to changing the design and construction in response to the environment, and how to improve such defects is the main purpose of developing the technology in this case.

In view of the defects of the prior art, the sound processing device provided by the present invention can improve the common sound insulation wall or the lack of excessive volume and weight of sound insulation materials.

One of the concepts of the present invention is to provide a sound processing device and method, which are applied in a space where at least one noise source exists, which includes: a sound sensor module for generating a sound wave to be processed according to the noise source To generate a set of sensing signals; and a sound generating module, the signal is connected to the sound sensing module, for generating a directional sound wave according to the set of sensing signals, the directional sound wave in a predetermined area and The to-be-processed sound waves intersect, so that the intensity of the to-be-processed sound waves after passing through the preset area is reduced.

According to the above conception, in the sound processing device of the present application, the predetermined area is located in the space above or below the sound generating module.

According to the above conception, in the sound processing device of the present application, the directional sound wave propagates in a direction extending toward the sky, and overlaps and overlaps the to-be-processed sound wave in the predetermined area with a limited width.

According to the above conception, in the sound processing device of the present application, the propagation directions of the directional sound wave and the to-be-processed sound wave are in an angular range rather than parallel at the intersection, and the angular range includes a right angle.

According to the above conception, in the sound processing device of the present application, the sound sensing module includes a microphone array, and the set of sensing signals generated by the to-be-processed sound wave emitted by the noise source includes multiple positions sensed Acoustic wave amplitude, phase and frequency spectrum.

According to the above conception, in the sound processing device of the present application, the sound sensing module is arranged between the noise source and the sound generating module, and there is a distance between the sound sensing module and the sound generating module, the The phase difference between the directional sound wave generated by the sound generating module and the sound wave to be processed is determined by the distance value.

According to the above-mentioned conception, in the sound processing device of the present application, the frequency band of the directional sound wave generated by the sound generation module is limited to a preset range or a set of preset ranges in which multiple frequency bands are separated and not connected .

According to the above-mentioned conception, in the sound processing device of the present application, the preset range is the human voice frequency range.

Another aspect of the present case is a sound processing method applied to a portable device located in a space where at least one noise source exists. The portable device includes a sound sensor module and a sound generation module , The method includes the following steps: the sound sensing module generates a set of sensing signals according to a to-be-processed sound wave emitted by the noise source; and the sound generating module generates a directional sound wave according to the set of sensing signals, the The directional sound wave intersects the sound wave to be processed in a predetermined area, so that the intensity of the sound wave to be processed after passing through the predetermined area is reduced.

According to the above conception, in the sound processing method of the present application, the predetermined area is located in the space above or below the sound generation module.

According to the above conception, in the sound processing method described in this application, the directional sound wave propagates toward the direction extending toward the sky, and overlaps and overlaps the to-be-processed sound wave in the predetermined area with a limited width.

According to the above conception, in the sound processing method of the present application, the propagation directions of the directional sound wave and the to-be-processed sound wave form an angle range at the intersection instead of being parallel, and the angle range includes a right angle.

According to the above conception, in the sound processing method of the present application, the sound sensing module includes a microphone array, and the set of sensing signals generated according to the to-be-processed sound wave emitted by the noise source includes multiple positions sensed Acoustic wave amplitude, phase and frequency spectrum.

According to the above conception, in the sound processing method of the present application, the sound sensing module is arranged between the noise source and the sound generating module, and there is a distance between the sound sensing module and the sound generating module, the The phase difference between the directional sound wave generated by the sound generating module and the sound wave to be processed is determined by the distance value.

According to the above conception, in the sound processing method of the present application, the frequency band of the directional sound wave generated by the sound generation module is limited to a preset range or a set of preset ranges in which multiple frequency bands are separated and not connected .

According to the above conception, in the sound processing method described in this case, the preset range is the human voice frequency range.

Another aspect of this case is a sound processing device applied to a space where there is at least one noise source, which includes: a sound sensor module for generating a sound wave to be processed from the noise source A set of sensing signals; and a noise reduction module. The signal is connected to the sound sensing module to generate a directional shock wave based on the set of sensing signals. The directional shock wave is in a predetermined area with the waiting The intersection of processing sound waves reduces the intensity of the sound waves to be processed after passing through the preset area.

According to the above conception, in the sound processing device of the present application, the noise reduction module includes at least a water mist wave generating module for generating a water mist shock wave included in the directional shock wave. The fog shock wave intersects the sound wave to be processed in the preset area, so that the intensity of the sound wave to be processed after passing through the preset area is reduced.

According to the above-mentioned conception, in the sound processing device of the present application, the noise reduction module further includes a sound generation module, and a signal is connected to the sound sensor module to generate a signal that is included in the directivity according to the set of sensing signals. One of the shock waves, the directional sound wave, which includes the directional sound wave and the water mist shock wave, intersects the to-be-processed sound wave in the predetermined area, so that the directional sound wave after passing through the predetermined area The intensity of the sound wave to be processed is reduced.

According to the above conception, in the sound processing device of the present application, the frequency band of the directional shock wave generated by the noise reduction module is limited to a preset range or a set of preset ranges in which multiple frequency bands are separated and not connected .

Please refer to FIG. 1A, which was developed in this case to improve the lack of conventional use. It is a functional block diagram of a sound processing device. The sound processing device 11 is applied to a space 10 in which at least one noise source 12 exists. For example, the noise source 12 may be the sound reinforcement equipment of a popular concert and the sound of the audience, and the space 10 is a venue for the popular concert, such as an open space. In order to avoid noise pollution in certain specific areas (such as homes) 13 around the open space, the sound processing device 11 can be arranged between the noise source 12 and the specific area 13.

The above-mentioned sound processing device 11 mainly includes a sound sensing module 111 and a sound generating module 112. The sound sensing module 111 can be implemented by a single microphone or a microphone array, and is mainly used to generate a sensing signal according to a to-be-processed sound wave 120 emitted by the noise source 12. Taking a popular concert as an example, the sound wave 120 to be processed is the huge sound emitted by one or more loudspeakers in the live space and the sound emitted by the crowd. The sound sensor module 111 is completed by the microphone array. Set between the noise source 12 (such as one or more loudspeakers installed in popular concerts and the masses) and the specific area 13, to be arranged in different positions (such as in a row, the direction of the row is in line with the waiting The propagation direction of the processed sound wave is orthogonal) to sense the change of the density and density of the sound wave 120 to be processed, and then convert it into a group of inductive signals in the form of electrical signals, and the group of inductive signals carries the detected signals at different positions. Acoustic wave characteristics such as amplitude, phase, and frequency spectrum that vary with time.

The set of sensing signals can be transmitted to a sound generating module 112 through electrically connected wires. One of the features of the sound generating module 112 is that the sound generating module 112 can be based on the sound contained in the set of sensing signals. Characteristic, a directional sound wave 110 is generated in a predetermined area, and the directional sound wave 110 intersects the sound wave 120 to be processed in the predetermined area, so that the sound wave 120 to be processed after passing through the predetermined area The intensity is reduced. Preferably, the propagation direction of the directional sound wave 110 generated by the sound generation module 112 and the propagation direction of the sound wave 120 to be processed are designed to intersect in an orthogonal manner, and the sound generation module 112 controls the generated The sparse wave part of the directional sound wave 110 intersects with the dense wave part of the sound wave 120 to be processed to cancel the energy. Of course, the sound generating module 112 can also control the dense wave part of the directional sound wave 110 generated by it. Intersection with the wave-thinning part of the sound wave 120 to be processed can cancel each other's energy so as to form a quiet zone at the intersection, and confine the noise caused by the sound wave 120 to be processed in a certain area.

Of course, in addition to the intersection at the angle shown in FIG. 1A, the emission angle of the directional sound wave 110 generated by the sound generating module 112 can be slightly adjusted to change the propagation direction of the directional sound wave 110 and the quiet zone ( quite zone). Examples of this are shown in Figures 1B and 1C. The emission angle of the directional sound wave 110 shown in Figure 1B is slightly biased toward the noise source 12, so that the quiet zone (quite zone) position is retracted inward, while the one shown in Figure 1C The emission angle of the directional sound wave 110 is slightly deviated to the specific area 13, so that the position of the quite zone extends outward. These angle changes can be used to adjust the position of the quiet zone to meet the needs of actual applications.

Take the top view shown in FIG. 2 as an example. The sound sensing module 111 completed by the microphone array can be arranged between the noise source 12 and the specific area 13 to be used in different positions (such as the row shown in the figure). In a row, the extending direction of the row is orthogonal to the propagation direction of the sound wave 120 to be processed) to sense the sound wave 120 to be processed in advance to generate a set of sensing signals, which carry random signals detected at different positions. Sound characteristics such as amplitude, phase and spectrum distribution of time changes. Then, the position of the sound generating module 112 completed by a single speaker or a speaker array can be set between the sound sensing module 111 and a specific area (such as a home) 13, and the sound generating module 112 can record and sound A distance value of the sensing module 111. Since the propagation speed of sound waves is slower than that of electrical signals, the sound sensing module 111 can first sense the to-be-processed sound waves 120 to generate the set of sensing signals, and then generate the directional sound waves according to the sound generation module 112 The transmission angle of 110, the distance value, the amplitude, phase, and spectral distribution of the set of induction signals that change with time, and other sound characteristics, further drive the sound generation module 112 at an appropriate time to generate the corresponding directional sound wave 110 .

The sound generating module 112 can generate a directional sound wave in a predetermined area 20 according to the sound characteristics of the sound wave 120 to be processed, the emission angle of the directional sound wave 110 and the distance value contained in the set of sensing signals 110. The directional sound wave 100 intersects the sound wave 120 to be processed in the predetermined area 20, so that the intensity of the sound wave to be processed after passing through the predetermined area 20 is reduced. The directional sound wave 100 and the sound wave 120 to be processed have opposite waveforms, and the phase difference between the two can be determined by the frequency characteristics, distance value, and/or emission angle of the sound wave 120 to be processed. Therefore, in the preset area 20 After the fair, the purpose of noise reduction can be effectively achieved, and the preset area 20 can be selectively arranged in the space above or below the sound generating module 112. As shown in FIGS. 1A-1C and FIG. 2, the predetermined area 20 is set in the space above the sound generating module 112, and the directional sound wave 100 propagates in the direction extending toward the sky, and the width is limited The predetermined area 20 intersects the sound wave 120 to be processed, and the directional sound wave 100 is used to superimpose the sound wave 120 to be processed to achieve the purpose of noise reduction by reducing the volume. A feature that is very different from the prior art is that the propagation directions of the directional sound wave 100 and the sound wave 120 to be processed are in an angular range rather than parallel at the intersection, and the angular range even includes a right angle. The purpose of this design is to extend an invisible soundproof wall to the sky to block noise from spreading outside the wall. In addition, in addition to using the sound generating module 112 to generate the directional sound wave 110, another embodiment as shown in FIG. 3 may be additionally provided with a water mist wave generating module 113 to generate water mist having a shape similar to the sound wave. Seismic waves can not only provide cooling on the scene, but also achieve noise reduction. The sound generating module 112 and the water mist wave generating module 113 can be collectively referred to as a noise reduction module, and the generated directional shock wave includes the directional sound wave and the water mist shock wave. Of course, it is also possible to use only the water mist wave generation module 113 to reduce noise. In this way, the fountain facilities in the park or square can also create invisible soundproof walls by using the concept and technology of this project. Quiet zone (quite zone).

The above-mentioned technical ideas can also be integrated into a smart phone in a miniaturized manner. The application program can be used to control the microphone and speaker in the smart phone to perform the above actions and achieve the effect of a silent wall. It can also be combined with multiple smart phones. Arrange together into a wall. Or one mobile phone acts as the sound sensing module 111, and another mobile phone acts as the sound generating module 112. This embodiment can be used in places such as coffee shops or restaurants. Placing the mobile phone on the side of the table can create an invisible soundproof wall to prevent external noise interference and prevent self-talk from affecting neighboring guests. Moreover, you can also specify a preset noise frequency band for noise reduction. For example, noise reduction is only for the human voice frequency band. The sound sensor module 111 and the sound generation module 112 both only process the human voice frequency band, so that the generated The frequency band of the directional sound wave is limited to a preset range (such as the human voice frequency range) or a set of preset ranges where multiple frequency bands are separated and not connected. This will allow users to avoid the interference of chat sounds, but still allow Ambient music and alarm sounds pass. Or it can only reduce the noise in the high-frequency band that the human ear feels harsh. The sound sensor module 111 and the sound generation module 112 only process the harsh high-frequency band, so that the frequency band of the generated directional sound wave is limited. In a preset range (such as a harsh high-frequency range), this will allow the user to avoid the interference of the harsh high-pitched sound, but still allow normal and harmless environmental sounds to pass through. In this way, this case can use the frequency characteristics of different sounds to distinguish chat sounds, ambient music, and alarm sounds, thereby achieving the effect of blocking different sound sources separately.

Although the present invention has been disclosed in preferred embodiments as above, it is not intended to limit the present invention. Anyone familiar with the art can make some changes and modifications without departing from the spirit and scope of the present invention. Therefore, the present invention The scope of protection shall be subject to the scope of the attached patent application. In addition, any embodiment of the present invention or the scope of the patent application does not have to achieve all the objectives or advantages or features disclosed in the present invention. In addition, the abstract part and title are only used to assist in searching for patent documents, not to limit the scope of rights of the present invention.

10: Space 11: Sound processing device 12: Noise source 13: specific area 111: Sound sensor module 112: Sound generation module 120: Sound waves to be processed 110: directional sound wave 113: Water mist wave generation module

Figure 1 A-1C, which is a functional block diagram of a sound processing device developed in this case to improve the lack of conventional use. Figure 2 is a schematic top view of the sound processing device in this case. Fig. 3 is a schematic top view of another embodiment of the sound processing device in this case.

10: Space

11: Sound processing device

12: Noise source

13: specific area

111: Sound sensor module

112: Sound generation module

120: Sound waves to be processed

110: directional sound wave

Claims (20)

A sound processing device applied to a space where there is at least one noise source, which includes: A sound sensing module for generating a set of sensing signals according to a to-be-processed sound wave emitted by the noise source; and A sound generating module, a signal connected to the sound sensing module, for generating a directional sound wave based on the set of sensing signals, the directional sound wave intersects the to-be-processed sound wave in a predetermined area, and passes The intensity of the sound wave to be processed after the preset area is reduced. In the sound processing device described in item 1 of the scope of patent application, the predetermined area is located in the space above or below the sound generating module. In the sound processing device described in item 2 of the scope of patent application, the directional sound wave propagates toward a direction extending toward the sky, and overlaps and overlaps the to-be-processed sound wave in the predetermined area with a limited width. For the sound processing device described in item 2 of the scope of patent application, the propagation directions of the directional sound wave and the sound wave to be processed are in an angular range rather than parallel at the intersection, and the angular range includes a right angle. According to the sound processing device described in claim 1, wherein the sound sensing module includes a microphone array, and the set of sensing signals generated by the to-be-processed sound wave emitted by the noise source includes multiple positions sensed The amplitude, phase, and frequency spectrum of the received sound wave. The sound processing device described in item 1 of the scope of patent application, wherein the sound sensor module is arranged between the noise source and the sound generating module, and there is a distance value between the sound sensor module and the sound generating module , The phase difference between the directional sound wave generated by the sound generating module and the sound wave to be processed is determined by the distance value. For the sound processing device described in item 1 of the scope of patent application, the frequency band of the directional sound wave generated by the sound generation module is limited to a preset range or a preset in which multiple frequency bands are separated and not connected Range collection. For the sound processing device described in item 1 of the scope of patent application, the preset range is the human voice frequency range. A sound processing method is applied to a portable device located in a space where at least one noise source exists. The portable device includes a sound sensor module and a sound generation module. The method includes the following steps: The sound sensing module generates a set of sensing signals according to a to-be-processed sound wave emitted by the noise source; and The sound generating module generates a directional sound wave according to the set of induction signals, and the directional sound wave intersects the sound wave to be processed in a predetermined area, so that the intensity of the sound wave to be processed after passing through the predetermined area Was lowered. According to the sound processing method described in item 9 of the scope of patent application, the predetermined area is located in the space above or below the sound generating module. The sound processing method described in item 10 of the scope of patent application, wherein the directional sound wave propagates toward the direction extending toward the sky, and overlaps and overlaps the to-be-processed sound wave in the predetermined area with a limited width. For the sound processing method described in item 10 of the scope of patent application, the propagation directions of the directional sound wave and the sound wave to be processed are in an angular range rather than parallel at the intersection, and the angular range includes a right angle. According to the sound processing method described in claim 9, wherein the sound sensing module includes a microphone array, and the set of sensing signals generated according to the sound wave to be processed emitted by the noise source includes multiple positions sensed The amplitude, phase, and frequency spectrum of the received sound wave. The sound processing method according to item 9 of the scope of patent application, wherein the sound sensing module is arranged between the noise source and the sound generating module, and there is a distance value between the sound sensing module and the sound generating module , The phase difference between the directional sound wave generated by the sound generating module and the sound wave to be processed is determined by the distance value. For the sound processing method described in item 9 of the scope of patent application, the frequency band of the directional sound wave generated by the sound generation module is limited to a preset range or a preset in which multiple frequency bands are separated and not connected Range collection. For the sound processing method described in item 9 of the scope of patent application, the preset range is the human voice frequency range. A sound processing device applied to a space where there is at least one noise source, which includes: A sound sensing module for generating a set of sensing signals according to a to-be-processed sound wave emitted by the noise source; and A noise reduction module with a signal connected to the sound sensor module to generate a directional shock wave based on the set of sensing signals. The directional shock wave intersects the sound wave to be processed in a predetermined area to pass The intensity of the sound wave to be processed after the preset area is reduced. The sound processing device according to item 17 of the scope of patent application, wherein the noise reduction module includes at least one water mist wave generating module for generating a water mist shock wave included in the directional shock wave, the directional shock wave The water mist shock wave intersects the sound wave to be processed in the preset area, so that the intensity of the sound wave to be processed after passing through the preset area is reduced. For the sound processing device described in item 18 of the scope of patent application, the noise reduction module further includes a sound generation module, and a signal is connected to the sound sensor module for generating the signal contained in the device according to the set of sensing signals. One of the directional shock waves, the directional sound wave, which includes the directional sound wave and the water mist shock wave, intersects the to-be-processed sound wave in the predetermined area, so that after passing through the predetermined area The intensity of the sound wave to be processed is reduced. For the sound processing device described in item 17 of the scope of patent application, the frequency band of the directional shock wave generated by the noise reduction module is limited to a preset range or a preset in which multiple frequency bands are separated and not connected Range collection.

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