Vehicle audio system and vehicle

Abstract

The present application provides a vehicle audio system and a vehicle. The vehicle audio system comprises a plurality of subwoofers having an operating frequency within a frequency band of less than 100 Hz, wherein one of the subwoofers is arranged at a dashboard in the front of a vehicle, while another subwoofer is arranged in a trunk at the rear of the vehicle. The vehicle audio system provides a more balanced in-vehicle sound field and has better bass effects, thereby offering a better listening experience for both front and rear occupants.

Description

Car audio systems and cars Technical Field

[0001] The present application relates to the automotive field, and in particular to a car audio system and a car comprising such a car audio system. Background Art

[0002] Users have high expectations for the sound quality and multi-channel audio balance of vehicle audio systems. The impact of bass is crucial to the user experience. Low-frequency sound effects in car audio systems must be optimized for the entire cabin, rather than focusing solely on a single location. This complicates adjusting low-frequency balance within the cabin.

[0003] It should be noted that the content introduced here only provides background information related to the present disclosure and does not necessarily belong to the prior art.

[0004] Summary of the Invention

[0005] According to different aspects, the object of the present application is to provide a car audio system and a car with better low-frequency sound effects.

[0006] In addition, this application also aims to solve or alleviate other technical problems existing in the prior art.

[0007] According to a first aspect of the present application, the above-mentioned problem is solved by providing a car audio system, specifically, it includes multiple subwoofers whose operating frequencies are in a frequency band less than 100 Hz, one of which is arranged at the dashboard at the front of the car, and another subwoofer is arranged at the trunk at the rear of the car.

[0008] In the car audio system according to the first aspect of the present application, optionally, the plurality of subwoofers are arranged in pairs, and the two subwoofers in the same pair are arranged diagonally with respect to the center of the car.

[0009] In the car audio system proposed according to the first aspect of the present application, optionally, the subwoofer box of the subwoofer for the front of the car is covered by the interior panel under the dashboard, and the subwoofer box of the subwoofer for the rear of the car is covered by the inner panel of the trunk.

[0010] In the car audio system proposed according to the first aspect of the present application, optionally, a subwoofer box of a subwoofer for the rear of the car is covered by a lower inner panel of the trunk, and a storage chamber is provided above the subwoofer box.

[0011] In the car audio system proposed according to the first aspect of the present application, optionally, the car audio system also includes a subwoofer located at the center console between the front seats, and the subwoofer box therefor is formed by an armrest box at the center console.

[0012] In the car audio system proposed according to the first aspect of the present application, optionally, the subwoofer box is sealed.

[0013] In the car audio system proposed according to the first aspect of the present application, optionally, the subwoofer box has an opening to communicate with the outside of the box.

[0014] In the car audio system proposed according to the first aspect of the present application, optionally, the subwoofer has a conical diaphragm, the conical diaphragm is enclosed in the subwoofer box, or the conical diaphragm is accessible from outside the box.

[0015] In the car audio system proposed according to the first aspect of the present application, optionally, the operating frequency of the subwoofer is within a frequency band from 20 Hz to 90 Hz.

[0016] According to another aspect of the present application, a car is provided, which includes the car audio system described above.

[0017] The car audio system according to the present disclosure has a more balanced in-car sound field and better bass sound quality, thereby providing a better listening experience for both front-seat passengers and rear-seat passengers. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The above and other features of the present application will become apparent with reference to the accompanying drawings, in which:

[0019] FIG1 schematically shows an embodiment of the configuration of a car audio system;

[0020] FIG2 shows a frequency response curve at the front row position achieved by a dual subwoofer car audio system;

[0021] FIG3 shows a frequency response curve at a rear seat position achieved by a dual subwoofer car audio system. DETAILED DESCRIPTION

[0022] It is easy to understand that, based on the technical solution of this application, without changing the essential spirit of this application, a person skilled in the art can propose a variety of interchangeable structural methods and implementation methods. Therefore, the following specific embodiments and drawings are only exemplary descriptions of the technical solution of this application and should not be regarded as the entire application or as a limitation or restriction of the technical solution of this application.

[0023] The terms "up," "down," "left," "right," "front," "back," "front," "back," "top," and "bottom" mentioned or potentially mentioned in this specification are defined relative to the structures shown in the accompanying drawings. They are relative concepts and may vary depending on their location or usage. Therefore, these or other directional terms should not be interpreted as restrictive. In addition, the terms "first," "second," "third," and similar expressions are used only for descriptive and distinguishing purposes and should not be understood to indicate or imply the relative importance of the corresponding components.

[0024] Referring to Figure 1, a top view of a car shows a configuration of a car audio system, which includes multiple subwoofers 10, 11, and 12. The subwoofers operate within a frequency range less than 100 Hz, or in other words, from 0 to 100 Hz. More preferably, the operating frequency range is from 20 Hz to 90 Hz. One of the subwoofers is located at the front of the car (i.e., the front subwoofer 10) and is placed on the dashboard, also known as the IP (Instrument Panel). Another subwoofer is located at the rear of the car (i.e., the rear subwoofer 11) and is placed in the trunk. Compared to a single sound source, the combination of the front and rear subwoofers facilitates balanced excitation of the car's modal response, that is, it facilitates identical, but non-synchronous, excitation of standing waves within the cabin. This combination of two subwoofers can reduce variations in amplitude response between seats, thereby more effectively balancing the sound field within the listening area. In addition, due to its operating frequency band, the subwoofer requires a larger independent box (i.e., the subwoofer box will be explained in detail below). According to this application, the existing space in the trunk and dashboard is used to form such an independent box, which is more beneficial for the space layout of the entire vehicle.

[0025] In some embodiments, the front subwoofer 10 can be arranged on the dashboard in front of the passenger seat, specifically, in a subwoofer enclosure below the dashboard, and the (front) subwoofer enclosure is covered by the vehicle interior panel. It should be noted that the "interior panel" and the "interior panel" explained in detail below should be understood relative to the exterior of the vehicle body. "The front subwoofer enclosure is covered by the vehicle interior panel" means that the front subwoofer enclosure can be covered by the interior panel on the outside, or it is also feasible that the interior panel forms part of the front subwoofer enclosure.

[0026] The front subwoofer enclosure can be sealed, that is, the front subwoofer 10 is a sealed subwoofer. The conical diaphragm of the sealed subwoofer can be enclosed in the enclosure. It is also possible that the conical diaphragm is accessible from the outside, or in other words, visible to the passengers. Such a sealed subwoofer has a faster transient response and a cleaner low-frequency sound.

[0027] Instead, the front subwoofer 10 is of the open-box type (this should be understood in contrast to the aforementioned closed-box subwoofer; the two differ in whether they have openings). This means that the subwoofer enclosure associated with the open-box subwoofer is provided with an opening, which communicates with the exterior of the enclosure. The size of the opening can be determined based on the enclosure dimensions and operating frequency band parameters. This type of open-box subwoofer has a lower low-frequency dive and correspondingly reduces enclosure space requirements. It should be noted that the aforementioned closed-box or open-box construction scheme for the front subwoofer 10 can be extended to the rear subwoofer 11 and the center subwoofer 12.

[0028] In some embodiments, the rear subwoofer enclosure for the rear subwoofer 11 can be covered by the inner panel of the car trunk. For example, the rear subwoofer enclosure can be located sideways and covered by the inner panel of the trunk. By using part of the side storage space of the car trunk as the subwoofer enclosure, a subwoofer sound effect can be achieved.

[0029] In other embodiments, the rear subwoofer enclosure can also be a bottom subwoofer enclosure, covered by the lower inner panel of the trunk, with a storage compartment above the rear subwoofer enclosure. In this case, the original trunk space without the rear subwoofer is divided into the rear subwoofer enclosure below and the storage compartment above, thus achieving a subwoofer sound effect.

[0030] As described for the front subwoofer 10, the rear subwoofer 11 can also be vented or enclosed. For example, it is possible for the front subwoofer 10 to be vented while the rear subwoofer 11 is enclosed, thereby optimizing space while achieving superior subwoofer sound quality. In this case, the enclosure volume of the rear subwoofer 11 can be 15L to 20L, while the enclosure volume of the front subwoofer 10 can be approximately 4L. It is also possible for both the front subwoofer 10 and the rear subwoofer 11 to be vented to minimize their enclosure space requirements. Of course, if the vehicle space permits, both the front and rear subwoofers can be enclosed.

[0031] In some embodiments, the multiple subwoofers may be arranged in pairs, with one subwoofer positioned at the front of the vehicle and the other subwoofer from the same pair positioned at the rear. The line along which the two subwoofers from the same pair lie may be parallel or substantially parallel to the length of the vehicle. For example, the front subwoofer may be positioned at the front right of the vehicle's cabin, while the other subwoofer from the same pair may be positioned at the rear right of the vehicle's cabin.

[0032] Preferably, one subwoofer is placed in front of the passenger seat, while the other subwoofer of the same pair is located in the trunk, on the left rear side of the vehicle (see Figure 1). Generally speaking, the two subwoofers of the same pair can be placed diagonally or approximately diagonally relative to the center of the vehicle. In other words, within the rectangle defined by the cabin and trunk, the two subwoofers of the pair are placed in the diagonal corners of the rectangle.

[0033] In some embodiments, the audio system also includes a central subwoofer 12, located in the center console between the front seats. Its associated subwoofer enclosure is formed by the center console's armrest. To accommodate the volume of the armrest, the central subwoofer 12 can be an open-box design, with its conical diaphragm enclosed within the central subwoofer enclosure or, for aesthetic reasons, visible to passengers. This way, part of the armrest's storage space is utilized as a subwoofer enclosure, achieving superior subwoofer sound quality.

[0034] In addition to the subwoofer, the car audio system also includes speakers for other operating frequency bands. For example, a full-range speaker 13 is located in the center of the car dashboard; a tweeter 14 is located in the front quarter window, operating in the 3000Hz to 20000Hz range; a woofer 15 is located in the door, operating in the 40Hz to 200Hz range; and a midrange speaker 16 is located in the door, particularly in the middle of the door, operating in the 200Hz to 3000Hz range.

[0035] It should be noted that the arrangements of the speakers corresponding to different frequency bands are only presented by way of example in the drawings and should not be understood restrictively. The operating frequency bands or arrangement positions may be modified according to actual needs.

[0036] The following describes in detail the frequency response curves of a car audio system according to the following embodiment, using Figures 2 and 3. The front subwoofer located on the dashboard and the rear subwoofer located in the trunk are vented-box models. Figure 2 is for the front seat, and Figure 3 is for the rear seat. The horizontal axis represents sound frequency in Hz, and the vertical axis represents sound pressure level (SPL) in dB.

[0037] In Figure 2, when only a subwoofer is installed in the trunk, the frequency response curve at the front row is Curve 1, which begins to attenuate after 50 Hz. In contrast, when subwoofers are installed in both the trunk and the dashboard, the frequency response curve at the front row is Curve 2, which remains flat after 50 Hz, thus compensating for the attenuation of the subwoofer between 50 Hz and 100 Hz.

[0038] In Figure 3, when only a subwoofer is installed in the trunk, the frequency response curve for the rear seats is Curve 1, which begins to decay after 40Hz. In contrast, when subwoofers are installed in both the trunk and the dashboard, the frequency response curve for the rear seats is Curve 2, which reinforces frequencies below 40Hz and exhibits only a slow decline in the 70Hz to 100Hz range. This demonstrates that the simultaneous installation of front and rear subwoofers provides both front and rear passengers with a more balanced and high-quality subwoofer experience.

[0039] In summary, the car audio system disclosed herein can achieve a well-balanced and high-quality bass sound, thereby providing passengers in the cabin with a better listening experience. In another embodiment of the present application, a sealed subwoofer can achieve a cleaner and more powerful bass listening experience. In another embodiment of the present application, a vented subwoofer can reduce the space required for the enclosure and improve bass depth.

[0040] In addition, the present application also provides an automobile, which includes an automobile audio system according to any one or more of the above embodiments. The automobile audio system can achieve a relatively balanced and high-quality bass sound effect. For the structure of the automobile and the configuration of the audio system, please refer to the above description of the automobile audio system according to the present application.

[0041] It should be understood that all the above preferred embodiments are illustrative rather than restrictive, and that various modifications or variations made by those skilled in the art to the specific embodiments described above based on the concept of this application should be within the legal protection scope of this application.

Claims

1. A car audio system, characterized in that: The car audio system includes a plurality of subwoofers whose operating frequencies are within a frequency band less than 100 Hz, wherein one subwoofer is arranged at the dashboard at the front of the car, and another subwoofer is arranged at the trunk at the rear of the car.

2. The car audio system according to claim 1, characterized in that The plurality of subwoofers are arranged in pairs, and two subwoofers in the same pair are arranged in a diagonal manner with respect to the center of the car.

3. The car audio system according to claim 1, characterized in that The subwoofer enclosure for the subwoofer at the front of the vehicle is covered by means of an interior panel under the instrument panel, and the subwoofer enclosure for the subwoofer at the rear of the vehicle is covered by an interior panel of the trunk.

4. The car audio system according to claim 3, characterized in that: A subwoofer box for a subwoofer at the rear of the vehicle is covered by a lower inner panel of the trunk, and a storage chamber is provided above the subwoofer box.

5. The car audio system according to claim 1, characterized in that The car audio system also includes a subwoofer located at the center console between the front seats, and the subwoofer box for the subwoofer is formed by an armrest box at the center console.

6. The car audio system according to any one of claims 3 to 5, characterized in that: The subwoofer box is airtight.

7. The car audio system according to any one of claims 3 to 5, characterized in that: The subwoofer box has an opening to communicate with the outside of the box.

8. The car audio system according to any one of claims 2 to 5, characterized in that: The subwoofer has a cone diaphragm which is enclosed in a subwoofer cabinet or is accessible from outside the cabinet.

9. The car audio system according to claim 1, characterized in that: The operating frequency of the subwoofer is within the frequency band from 20 Hz to 90 Hz.

10. An automobile, characterized in that: The car comprises the car audio system according to any one of claims 1 to 9.

Images