Audio playing method, audio playing system and vehicle

Abstract

The invention provides an audio playing method, an audio playing system and a vehicle. The audio playing method comprises the following steps: detecting an audio type of an audio signal; when the audio type is a first audio type, determining a driving strategy as a hybrid driving strategy; the audio signal corresponding to the first audio type comprises a low frequency; and driving the low-frequency sound equipment and the original vehicle loudspeaker to play the audio signal by using the hybrid driving strategy. According to the method and the device, the audio type of the audio signal is detected, and when the audio type is the first audio type of the audio signal including the low frequency, the low-frequency sound equipment and the original vehicle loudspeaker are driven to play the audio signal through the hybrid driving strategy, so that the low-frequency sound equipment is used for solving the problem that the low-frequency sound quality is relatively poor; and the bass effect of the played music is improved.

Description

Technical Field

[0001] The present invention relates to the field of vehicle technology, and in particular to an audio playback method, an audio playback system, and a vehicle. Background Art

[0002] With the rapid development of vehicle technology, users are no longer limited to traveling by car. The driving experience is also very important during the travel process. A poor driving experience often makes users feel physically and mentally exhausted during the journey.

[0003] Playing music is often a popular way for users to relax while driving. Vehicles are often equipped with built-in speakers for music playback. However, because the configuration of the built-in speakers must take into account the overall audio range of the music, when playing music, including low-frequency music, using the built-in speakers, the low-frequency sound quality is poor, and the bass effect of the music is limited, resulting in a poor user experience.

[0004] The above content is only used to assist in understanding the technical solution of the present invention and does not constitute an admission that the above content is prior art. Summary of the Invention

[0005] The main purpose of the present invention is to provide an audio playback method, an audio playback system and a vehicle, aiming to solve the technical problem in the prior art of poor low-frequency sound quality when using the original vehicle speakers for playback.

[0006] To achieve the above-mentioned object, the present invention proposes an audio playback method, which is applied to an audio playback system provided with a low-frequency sound system and an original vehicle speaker. The audio playback method comprises:

[0007] Detecting the audio type of the audio signal;

[0008] When the audio type is a first audio type, determining that the driving strategy is a hybrid driving strategy; the audio signal corresponding to the first audio type includes a low frequency;

[0009] The hybrid driving strategy is used to drive the low-frequency audio system and the original vehicle speaker to play the audio signal.

[0010] Optionally, detecting the audio type of the audio signal includes:

[0011] extracting an audio tag of the audio signal;

[0012] The audio type of the audio signal is determined according to the audio tag.

[0013] Optionally, after detecting the audio type of the audio signal, the method further includes:

[0014] When the audio type is the second audio type, determining the driving strategy to be the first driving strategy; the audio signal corresponding to the second audio type does not include low frequency;

[0015] The first driving strategy is used to drive the original vehicle speaker to play the audio signal.

[0016] Optionally, the using the hybrid driving strategy to drive the low-frequency audio system and the original vehicle speaker to play the audio signal includes:

[0017] detecting a signal frequency of the audio signal and obtaining an audio curve of the audio signal;

[0018] Compensating the audio intensity of the audio curve according to the signal frequency;

[0019] The hybrid driving strategy and the compensated audio curve are used to drive the low-frequency audio and the original vehicle speaker to play the audio signal.

[0020] Optionally, compensating the audio intensity of the audio curve according to the signal frequency includes:

[0021] Determining the audio frequency interval in which the signal frequency lies;

[0022] searching for a compensation audio intensity of the audio curve according to the audio interval and a preset mapping relationship;

[0023] The audio curve is audio-compensated using the compensation audio intensity.

[0024] Optionally, before detecting the audio type of the audio signal, the method further includes:

[0025] Get the audio playback scene for playing audio signals;

[0026] When the audio playback scene is an in-car playback scene, the step of detecting the audio type of the audio signal is performed.

[0027] Optionally, after obtaining the audio playback scene of the audio signal, the method further includes:

[0028] When the audio playback scene is an out-of-car playback scene, determining that the driving strategy of the audio signal is a second driving strategy;

[0029] The low-frequency speaker is driven to play the audio signal according to the second driving strategy.

[0030] In addition, to achieve the above-mentioned purpose, the present invention also provides an audio playback system, the audio playback system comprising: the audio playback system comprising: an original car speaker, a low-frequency sound system and a driving host provided with a power amplifier;

[0031] The original vehicle speaker and the low-frequency audio are both connected to the driving host through the power amplifier; the driving host is used to execute any of the above-mentioned audio playback methods.

[0032] Optionally, the audio playback system further includes a power supply, which is disposed in the low-frequency speaker and connected to the low-frequency speaker;

[0033] The power supply is used to output the working voltage required by the low-frequency speaker to the low-frequency speaker when the low-frequency speaker is connected to the driving host via a wireless method.

[0034] In addition, to achieve the above-mentioned purpose, the present invention also provides a vehicle, which includes: the above-mentioned audio playback system.

[0035] The present invention provides an audio playback method, an audio playback system, and a vehicle. The audio playback method includes detecting the audio type of an audio signal; when the audio type is a first audio type, determining that a driving strategy is a hybrid driving strategy; the audio signal corresponding to the first audio type includes a low-frequency frequency; and utilizing the hybrid driving strategy to drive the low-frequency speaker and the original vehicle speaker to play the audio signal. In the present invention, the audio type of the audio signal is detected. When the audio type is the first audio type including a low-frequency frequency, the hybrid driving strategy is used to drive the low-frequency speaker and the original vehicle speaker to play the audio signal. The low-frequency speaker is utilized to compensate for the poor low-frequency sound quality, thereby enhancing the bass effect of the played music and improving the user experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying any creative work.

[0037] Figure 1 This is a first structural diagram of the audio playback system proposed by the present invention;

[0038] Figure 2 This is a second structural diagram of the audio playback system proposed by the present invention;

[0039] Figure 3 This is a flow chart of a first embodiment of the audio playback method proposed by the present invention;

[0040] Figure 4This is a schematic diagram of the first flow chart of the second embodiment of the audio playback method proposed by the present invention;

[0041] Figure 5 This is a schematic diagram of a second flow chart of the second embodiment of the audio playback method proposed by the present invention;

[0042] Figure 6 This is a flow chart of a third embodiment of the audio playback method proposed by the present invention;

[0043] Figure 7 This is a flow chart of the fourth embodiment of the audio playback method proposed by the present invention.

[0044] The purpose, features and advantages of the present invention will be further described with reference to the accompanying drawings and in conjunction with the embodiments. DETAILED DESCRIPTION

[0045] It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0046] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0047] It should be noted that all directional indications in the embodiments of the present invention (such as up, down, left, right, front, back, etc.) are only used to explain the relative position relationship, movement status, etc. between the various components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0048] In addition, the descriptions of "first", "second", etc. in the present invention are for descriptive purposes only and should not be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" or "second" may explicitly or implicitly include at least one of such features. In addition, the technical solutions between the various embodiments can be combined with each other, but this must be based on the fact that they can be implemented by ordinary technicians in this field. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0049] Reference Figure 1 , Figure 1 This is a structural diagram of the audio playback system proposed by the present invention. Figure 1In the embodiment, the audio playback system includes: the audio playback system includes: an original car speaker 10, a low-frequency sound system 20 and a driving host 30 provided with a power amplifier;

[0050] The original vehicle speaker 10 and the low-frequency speaker 20 are both connected to the driving host 30 through the power amplifier.

[0051] It should be understood that the original vehicle speaker 10 is a fixed speaker installed inside the vehicle and is typically distributed throughout the vehicle. The original vehicle speaker 10 can be directly driven by the driver host 30 to play audio signals within the vehicle. Typically, when installing the original vehicle speaker 10 in a vehicle, the speaker is required to cover the entire audio frequency range as much as possible. Therefore, when the audio signal contains low-frequency components, the audio playback quality of these components is poor.

[0052] Furthermore, the power amplifier is a device that amplifies the power of the audio signal to be played, and is primarily used to drive a device connected to the driver host 30 and used to play the audio signal. The audio signal is a signal that needs to be played by the device that plays the audio signal. The audio signal is not limited to in-car music, but can also be other audio signals, such as audio signals during calls and audio signals of voice messages.

[0053] It should be understood that the audio playback system of the present invention includes not only the original vehicle speaker 10 but also a low-frequency speaker 20. The low-frequency speaker 20 can also play audio signals, but it focuses more on playing low-frequency frequencies within the audio signal. The low-frequency speaker 20 can be connected to the driving host 30 directly via a cable or wirelessly, such as via Bluetooth or Wi-Fi.

[0054] It should be noted that during audio signal playback, different driving strategies can be used to drive the original vehicle speaker 10 and / or the low-frequency speaker 20. Different driving strategies drive different devices. For example, when the audio signal to be played does not include a low-frequency component, a driving strategy that drives only the original vehicle speaker 10 can be used.

[0055] Reference Figure 2 The audio playback system further includes a power supply, which is disposed in the low-frequency speaker 20 and connected to the low-frequency speaker 20 .

[0056] It should be understood that the subwoofer 20 can be directly connected to the driver 30 via a cable, with the driver 30 then using the vehicle's battery to power the subwoofer 20. In practice, the subwoofer 20 may also be connected to the driver 30 wirelessly to play audio signals. In this case, the subwoofer 20 may not be properly powered, requiring an external power source.

[0057] It should be noted that the power supply is used to power the low-frequency speaker 20. The power supply is generally a low-voltage power supply. If the low-frequency speaker 20 is needed and the low-frequency speaker 20 cannot be powered directly by the driving host 30, the power supply can be used directly to power the low-frequency speaker 20.

[0058] In a specific implementation, the power supply can output the operating voltage required by the low-frequency speaker 20 to the low-frequency speaker 20 when the low-frequency speaker 20 is connected to the driving host 30 via a wireless method. Of course, the power supply can also directly power the low-frequency speaker 20. When the low-frequency speaker 20 receives the operating voltage, it is in a standby state and can directly play the audio signal when it receives the audio signal to be played.

[0059] In order to solve the above problems, based on the structure of the above audio playback system, the present invention proposes a first embodiment of an audio playback method. Figure 3 , Figure 3 This is a flowchart of the first embodiment of the audio playback method proposed by the present invention.

[0060] In this embodiment, the audio playback method includes:

[0061] Step S10: Detecting the audio type of the audio signal.

[0062] It should be understood that in the embodiment, the execution subject can be an audio playback system or a driving host in the audio playback system. The driving host can detect the audio signal to be played, and then drive the corresponding audio playback device in different ways according to different audio signals.

[0063] It should be noted that the audio signal is a signal that needs to be played, and the audio signal can be a music signal. The audio signal can include different audio types, and the audio type can be divided according to the signal frequency of the audio signal. When the signal frequency of the audio signal includes low-frequency frequencies, the audio type can be identified as the first audio type. When the signal frequency of the audio signal does not include low-frequency audio, the audio type can be identified as the second audio type. For example, when the audio signal is a music type such as rock, electronic, pop, jazz, and hip-hop, the signal frequency in the audio signal includes low-frequency frequencies, and the audio type of the audio signal can be identified as the first audio type; when the audio signal is a music type such as pure music, parent-child, classical, and folk, the signal frequency of the audio signal does not include low-frequency frequencies, and the audio type of the audio signal can be identified as the second audio type.

[0064] In a specific implementation, the audio signal may be divided to determine the specific music type to which the audio signal belongs, and then the audio type of the audio signal may be determined according to the music type.

[0065] Step S20: When the audio type is the first audio type, determining that the driving strategy is a hybrid driving strategy.

[0066] It should be noted that the audio signal corresponding to the first audio type includes a low-frequency frequency. A driving strategy is a strategy used to drive an audio playback device. Different driving strategies may drive different audio playback devices. A hybrid driving strategy is a type of driving strategy for an audio playback device. Using this hybrid driving strategy, the original vehicle speakers and low-frequency speakers can be directly driven to simultaneously play audio signals.

[0067] It can be understood that the first audio type is an audio type whose signal frequency includes a low-frequency frequency. In order to ensure the user experience, the original car speakers and the low-frequency audio can be driven simultaneously.

[0068] In a specific implementation, after determining the audio type of the audio signal to be played, the driving strategy to be executed can be determined based on the audio type. If the audio signal frequency includes low frequencies, a mixed driving strategy is selected; if the audio signal frequency does not include low frequencies, a second driving strategy is selected that solely drives the original vehicle speakers.

[0069] Different driving strategies need to be selected for different audio signals. For example, during the playback of an audio signal, when a change in the music type is detected, from pure music to rock, the driving strategy can be switched from a single driving strategy of the original car speakers to a hybrid driving strategy.

[0070] Step S30: using the hybrid driving strategy to drive the low-frequency audio system and the original vehicle speaker to play the audio signal.

[0071] It should be understood that when the driving strategy of the audio playback device is determined to be a hybrid driving strategy, it indicates that the original vehicle speakers and low-frequency speakers need to be driven at the same time. At this time, the driving host can output the amplified audio signal to the original vehicle speakers and low-frequency speakers at the same time through the power amplifier, thereby controlling the original vehicle speakers and low-frequency speakers to play the audio signal at the same time.

[0072] This embodiment provides an audio playback method, which detects the audio type of an audio signal. When the audio type is a first audio type in which the audio signal includes low-frequency frequencies, the method drives the low-frequency audio system and the original vehicle speakers to play the audio signal through a hybrid driving strategy, and uses the low-frequency audio system to compensate for the poor low-frequency sound quality, thereby improving the bass effect of the played music.

[0073] Based on the first embodiment of the above-mentioned audio playing method, a second embodiment of the audio playing method of the present invention is proposed. Figure 4 , Figure 4 This is a schematic diagram of the first flow chart of the second embodiment of the audio playback method proposed by the present invention.

[0074] In this embodiment, step S10 specifically includes:

[0075] Step S101: extracting audio tags from the audio signal.

[0076] It should be understood that in the process of determining the audio type of an audio signal, the audio signal needs to be accurately identified to avoid erroneous detection of the audio type. In this embodiment, the audio type of the audio signal can be determined based on the distinguishing features of different types of audio signals by identifying the distinguishing features within the audio signal.

[0077] It should be noted that audio tags are distinguishing features within different audio signals. Different audio signals have different audio tags, which further determine the audio type of the audio signal. In a specific implementation, when an audio signal is received, the audio signal can be parsed and then the audio tag of the audio signal can be extracted from the audio signal.

[0078] Step S102: Determine the audio type of the audio signal using the audio tag.

[0079] It should be understood that different audio tags correspond to different music types of audio signals. Before determining the audio type of an audio signal, the audio type of the audio signal can be marked to determine the audio tags of different audio signals; for example, the rock music type can be marked as the first audio tag, the folk music type can be marked as the second audio tag, the electronic music type can be marked as the third audio tag, the pure music type can be marked as the fourth audio tag, the classical music type can be marked as the fifth audio tag, the pop music type can be marked as the sixth audio tag, the parent-child audio signal can be marked as the seventh audio tag, the hip-hop music type can be marked as the eighth audio tag, the jazz audio type can be marked as the ninth audio tag, and the remaining other audio types can be marked as the tenth audio tag. Of course, other audio tags can also be used to mark different audio types, or a mapping relationship between audio types and audio tags can be established.

[0080] It is understandable that, when an audio tag is determined, a specific music type can be determined based on the audio tag, and whether the signal frequency within different music types includes low frequencies corresponds to different audio types. In a specific implementation, the music type of the audio signal can be determined based on the audio tag, and then the audio type can be determined based on whether the signal frequency of the music type includes low frequencies. For example, when the audio tag extracted is the first audio tag, the music type of the audio signal is determined to be rock through the above-mentioned tag relationship, and the signal frequency within rock music includes low frequencies, then the audio type of the audio signal is determined to be the first audio type.

[0081] Reference Figure 5 , Figure 5 This is a second flow chart of the second embodiment of the audio playback method proposed by the present invention. In this embodiment, after step S10, the method further includes:

[0082] Step S40: When the audio type is the second audio type, determining that the driving strategy is the first driving strategy.

[0083] It should be noted that different audio types require sampling of different driving strategies. When the audio type is determined, different driving strategies can be selected. When the signal frequency of the audio signal does not include low-frequency frequencies, the first driving strategy can be selected to drive the audio playback device to play the audio signal. The audio signal corresponding to the second audio type does not include low-frequency frequencies. The first driving strategy is a driving strategy for driving the original vehicle speaker alone. After detecting the driving type, the driving host selects different driving strategies according to the specific audio type.

[0084] In a specific implementation, if the audio type is determined to be the second audio type, it indicates that the frequency range of the audio signal to be played does not include low frequencies. In this case, the driving host can determine that the original vehicle speaker needs to be driven to play the audio signal. The driving host stores multiple driving strategies. If the audio type of the audio signal to be played is determined to be the second audio type, the first driving strategy can be determined and extracted.

[0085] Step S50: using the first driving strategy to drive the original vehicle speaker to play the audio signal.

[0086] It should be understood that when it is determined that the first driving strategy needs to be used to drive the audio playback device, the first driving strategy corresponds to driving the original vehicle speakers in the vehicle, and the driving host can directly send the audio signal to the original vehicle speakers through the power amplifier to play the audio signal.

[0087] In this embodiment, different audio playback devices can be driven by setting different driving strategies, and the corresponding driving strategy is selected according to the audio type of the audio signal. Then, when the signal frequency of the audio signal includes low-frequency frequencies, the original vehicle speakers and low-frequency audio can be driven simultaneously to improve the low-frequency sound quality; when the signal frequency of the audio signal includes low-frequency frequencies, the audio signal can also be played directly by driving the original vehicle.

[0088] Reference Figure 6 , Figure 6 The third embodiment of the audio playing method of the present invention is provided based on the first embodiment or the second embodiment of the audio playing method.

[0089] In this embodiment, step S30 further includes:

[0090] Step S301: Detect the signal frequency of the audio signal and obtain an audio curve of the audio signal.

[0091] It should be understood that when users listen to audio, since the human ear perceives different frequencies differently, the played audio signal may need to be appropriately adjusted when the audio frequency is different, thereby further improving the user's audio listening experience.

[0092] It should be noted that the audio curve is the audio curve that the audio signal needs to present during normal playback. Driving the audio player according to the audio curve can make the audio player present the corresponding audio signal. The audio curves of different audio signals are not the same. For example, the specific presentation of rock audio signals and pure music audio signals during playback is also different. When the same audio playback device is used, the audio signal corresponds to the audio curve. Of course, when different audio devices are used, the audio curve presented during the playback of the audio signal is also different. When the original car speakers are used to play the audio signal, the audio signal is played according to the original audio curve; however, when a low-frequency speaker is used to play the audio signal, or when the original car speakers and low-frequency speakers are used at the same time, in order to ensure the playback effect of the audio signal caused by different audio playback devices, the signal frequency of the audio signal is different, and the audio curve of the audio signal can be appropriately adjusted.

[0093] Step S302: Compensating the audio intensity of the audio curve according to the signal frequency.

[0094] It should be noted that audio intensity refers to the signal strength displayed on the audio curve when the audio signal is playing. This is within the normal human hearing frequency range, which is approximately 20 to 20,000 Hz. In reality, sounds at 20,000 Hz are difficult to hear, and the human ear cannot fully hear frequencies near 20 or 20,000 Hz, necessitating compensation for the audio curve. Appropriate compensation can be applied based on the specific difference between the specific signal frequency and the endpoints of the normal human hearing frequency range. For example, at a frequency of 60 Hz, the signal strength of the audio signal can be appropriately increased so that the user can hear the audio at that frequency.

[0095] In a specific implementation, when the signal frequency of the audio signal is determined, the intensity of the audio curve can be adjusted according to the specific difference between the signal frequency of the audio signal and the endpoint value of the audio frequency range normally heard by the human ear.

[0096] Step S303: using the hybrid driving strategy and the compensated audio curve to drive the low-frequency audio system and the original vehicle speaker to play the audio signal.

[0097] It is understandable that using the original car speakers and low-frequency speakers to play audio signals according to the adjusted audio curve can accurately output the audio signals, thereby allowing users to further enhance the music listening experience.

[0098] Therefore, when it is determined to use a hybrid driving strategy, the driving host drives the low-frequency audio and the original vehicle speaker according to the compensated audio curve, so that the low-frequency audio and the original vehicle speaker play the audio signal, avoiding the difference between the audio signal to be played and the audio signal actually played.

[0099] Accordingly, the step S302 specifically includes:

[0100] Step S3021: Determine the audio frequency interval in which the signal frequency is located.

[0101] It should be understood that in the process of compensating the audio curve, the audio curve needs to be compensated according to the audio frequency of the audio signal. If the audio curve is directly compensated for the same audio intensity, the playback effect presented for different signal frequencies may be different. Therefore, in this embodiment, the audio can be divided into intervals, and the audio curve can be adjusted more accurately according to the divided audio intervals and signal frequencies. In the process of audio interval division, the specific output process of the audio signal can be combined. For example, in the audio interval of 60 to 80 Hz, the audio curve is in the process of climbing, and the sound heard by the human ear is not obvious, so a larger audio intensity can be compensated.

[0102] The audio frequency range is divided based on the specific output process of the audio signal and the audio frequency that can be heard by the human ear, such as the audio range of 60 to 80 Hz, the audio range of 110 to 150 Hz, the audio range of 160 to 200 Hz, the audio range of 500 to 2000 Hz, the audio range of 3000 to 4000 Hz, and the audio range above 4000 Hz. The audio curve in the audio range of 60 to 80 Hz is in a climbing stage, and the audio effect heard by the human ear gradually becomes better. The audio curve in the audio range above 4000 Hz is in a descending stage, and the audio effect heard by the human ear gradually becomes worse. In these two audio ranges, increased audio compensation can be selected. In addition, in audio ranges outside the above audio ranges, such as the audio range of 80 to 110 Hz, the audio curve tends to be stable, and audio intensity compensation is not required. The original car speakers and low-frequency speakers can be driven according to the audio curve of the normal original car speakers. In the audio range of 110 to 150 Hz, the audio range of 160 to 200 Hz, the audio range of 500 to 2000 Hz, and the audio range of 3000 to 4000 Hz, taking into account the fluctuations in audio signal playback, appropriate audio intensity compensation in a smaller range is sufficient.

[0103] Step S3022: searching for the compensated audio intensity of the audio curve according to the audio interval and the preset mapping relationship.

[0104] It should be noted that the compensation audio intensity is the intensity that needs to be compensated for the audio curve of the audio signal. The preset mapping relationship is a preset setting for determining the compensation audio intensity according to the audio frequency of the audio signal. The audio effect heard by the human ear in the audio range of 60 to 80 Hz and the audio range above 4000 Hz is greater. In these two audio ranges, a compensation audio intensity of +2db to +6db can be selected; in the audio range of 110 to 150 Hz, the audio range of 160 to 200 Hz, the audio range of 500 to 2000 Hz, and the audio range of 3000 to 4000 Hz, a compensation audio intensity of +1db to +3db can be selected.

[0105] In a specific implementation, the audio frequency range of the audio signal can be determined first, and then the compensation audio intensity required for the audio curve can be determined based on the audio frequency range. For example, if the audio signal frequency is in the audio frequency range of 60 to 80 Hz, a compensation audio intensity of +4 dB can be selected.

[0106] Step S3023: performing audio compensation on the audio curve using the compensated audio intensity.

[0107] It should be understood that when determining the compensated audio intensity, the audio curve in the audio interval can be directly compensated according to the audio interval in which the signal frequency of the audio signal is located, thereby obtaining a more accurate audio curve and further improving the user experience.

[0108] Reference Figure 7 , Figure 7 The fourth embodiment of the audio playing method of the present invention is provided based on any one of the first to third embodiments of the above-mentioned audio playing method.

[0109] In this embodiment, before step S10, the following steps are further included:

[0110] Step S11: Acquire an audio playback scene for playing an audio signal.

[0111] It should be noted that when a user plays an audio signal, there may be different audio playback scenarios, where the audio needs to be played in different locations, such as an in-car playback scenario or an out-of-car playback scenario, where the out-of-car playback scenario may be a camping scenario or the like.

[0112] It should be understood that since the original vehicle speakers are usually fixed inside the vehicle, while the low-frequency speakers can be mobile audio playback devices, different driving strategies can be adopted in different audio playback scenarios. If the driving strategy is incorrectly selected, the user experience may be degraded. For example, in the outdoor playback scenario, if the original vehicle speakers in the vehicle are activated to play audio signals, the user may not be able to hear the audio signals properly if they are a certain distance away from the vehicle.

[0113] In order to avoid the above problems, in this embodiment, the audio playback scene can also be detected, and then the specific driving strategy can be determined according to the audio playback scene. In the specific implementation, the audio playback scene can be determined according to the state of the vehicle, the user state inside the vehicle, and the working state of each component inside the vehicle. For example, when the vehicle is in the parking state, there are no drivers or passengers in the vehicle, and the driving host in the vehicle continuously outputs audio signals, all three conditions are met and the duration reaches the set duration, then the audio playback scene can be determined to be the outdoor playback scene. Of course, the audio playback scene can also be determined according to the specific position or connection relationship of the low-frequency speaker. For example, if the low-frequency speaker is outside the vehicle, it can be determined that the audio playback scene is in the outdoor playback scene; otherwise, it is determined that the audio playback scene is in the indoor playback scene. If the low-frequency speaker establishes a connection with the driving host wirelessly and does not change within the set duration, then the audio playback scene is determined to be in the outdoor playback scene; otherwise, it is determined that the audio playback scene is in the indoor playback scene.

[0114] Step S12: When the audio playback scene is an in-car playback scene, executing the step of detecting the audio type of the audio signal.

[0115] It should be understood that when the audio playback scenario is an in-car playback scenario, the audio type of the audio signal can be detected, and then the driving strategy can be determined according to the specific audio type of the audio signal to drive the original car speakers and / or low-frequency speakers.

[0116] After step S11, the following steps are further included:

[0117] Step S13: When the audio playback scene is an outdoor playback scene, determining that the driving strategy of the audio signal is a second driving strategy.

[0118] It should be noted that the second driving strategy is for independently driving the low-frequency speakers to play the audio signal. Since the playback scenario is outside the vehicle, the driving strategy for the in-vehicle playback scenario is not applicable. In the out-of-vehicle playback scenario, the low-frequency speakers need to be directly driven to play the audio signal. In specific implementations, when the host driver determines that the audio playback scenario is outside the vehicle, it directly selects the second driving strategy corresponding to the low-frequency speakers located outside the vehicle.

[0119] Step S14: driving the low-frequency speaker to play the audio signal according to the second driving strategy.

[0120] It should be understood that after determining to adopt the second driving strategy, the driving host can directly select the second driving strategy to drive the low-frequency speaker through the operational amplifier, thereby causing the low-frequency speaker to play the audio signal, and the user can directly enjoy music outside the vehicle.

[0121] In addition, to achieve the above-mentioned purpose, the present invention also provides a vehicle, in which the above-mentioned audio playback system is provided. The driving host provided in the audio playback system is used to execute the audio playback method in any of the above-mentioned embodiments.

[0122] The above are only preferred embodiments of the present invention and are not intended to limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the present invention description and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. An audio playback method, characterized in that: The audio playback method is applied to an audio playback system provided with a low-frequency sound system and an original vehicle speaker; The audio playback method comprises: Detecting the audio type of the audio signal; When the audio type is a first audio type, determining that the driving strategy is a hybrid driving strategy; the audio signal corresponding to the first audio type includes a low frequency; The hybrid driving strategy is used to drive the low-frequency audio system and the original vehicle speaker to play the audio signal.

2. The audio playback method according to claim 1, wherein: The detecting the audio type of the audio signal includes: extracting an audio tag of the audio signal; The audio type of the audio signal is determined according to the audio tag.

3. The audio playback method according to claim 1, wherein: After detecting the audio type of the audio signal, the method further includes: When the audio type is the second audio type, determining the driving strategy to be the first driving strategy; the audio signal corresponding to the second audio type does not include low frequency; The first driving strategy is used to drive the original vehicle speaker to play the audio signal.

4. The audio playback method according to claim 1, wherein: The step of using the hybrid driving strategy to drive the low-frequency audio system and the original vehicle speaker to play the audio signal includes: detecting a signal frequency of the audio signal and obtaining an audio curve of the audio signal; Compensating the audio intensity of the audio curve according to the signal frequency; The hybrid driving strategy and the compensated audio curve are used to drive the low-frequency audio and the original vehicle speaker to play the audio signal.

5. The audio playback method according to claim 4, wherein: The compensating the audio intensity of the audio curve according to the signal frequency includes: Determining the audio frequency interval in which the signal frequency lies; searching for a compensation audio intensity of the audio curve according to the audio interval and a preset mapping relationship; The audio curve is audio-compensated using the compensation audio intensity.

6. The audio playback method according to claim 1, wherein: Before detecting the audio type of the audio signal, the method further includes: Get the audio playback scene for playing audio signals; When the audio playback scene is an in-car playback scene, the step of detecting the audio type of the audio signal is performed.

7. The audio playback method according to claim 6, wherein: After obtaining the audio playback scene of the audio signal, the method further includes: When the audio playback scene is an out-of-car playback scene, determining that the driving strategy of the audio signal is a second driving strategy; The low-frequency speaker is driven to play the audio signal according to the second driving strategy.

8. An audio playback system, characterized in that: The audio playback system includes: original car speakers, low-frequency speakers and a driving host equipped with a power amplifier; The original vehicle speaker and the low-frequency audio are both connected to the driving host through the power amplifier; the driving host is used to execute the audio playback method according to any one of claims 1 to 7.

9. The audio playback system according to claim 8, wherein: The audio playback system further includes a power supply, which is disposed in the low-frequency speaker and connected to the low-frequency speaker; The power supply is used to output the working voltage required by the low-frequency speaker to the low-frequency speaker when the low-frequency speaker is connected to the driving host via a wireless method.

10. A vehicle, characterized in that: The vehicle comprises: the audio playback system according to claim 8 or 9.

Images