CN111459455A - Vehicle-mounted audio control method and device and vehicle-mounted system - Google Patents
Vehicle-mounted audio control method and device and vehicle-mounted system Download PDFInfo
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/16—Sound input; Sound output
- G06F3/165—Management of the audio stream, e.g. setting of volume, audio stream path
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- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10L—SPEECH ANALYSIS OR SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING; SPEECH OR AUDIO CODING OR DECODING
- G10L21/00—Processing of the speech or voice signal to produce another audible or non-audible signal, e.g. visual or tactile, in order to modify its quality or its intelligibility
- G10L21/003—Changing voice quality, e.g. pitch or formants
- G10L21/007—Changing voice quality, e.g. pitch or formants characterised by the process used
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- G—PHYSICS
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- G10L—SPEECH ANALYSIS OR SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING; SPEECH OR AUDIO CODING OR DECODING
- G10L21/00—Processing of the speech or voice signal to produce another audible or non-audible signal, e.g. visual or tactile, in order to modify its quality or its intelligibility
- G10L21/02—Speech enhancement, e.g. noise reduction or echo cancellation
- G10L21/0316—Speech enhancement, e.g. noise reduction or echo cancellation by changing the amplitude
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- H04S7/30—Control circuits for electronic adaptation of the sound field
Abstract
The invention discloses a vehicle-mounted audio control method, a vehicle-mounted audio control device and a vehicle-mounted system. Because the corresponding generation mode can be selected according to the priority of the audio and the type of the mixed audio to generate the target audio information, the target audio information can better meet the scene requirement of audio output, and the audio output effect is also improved.
Description
Technical Field
The invention relates to the field of vehicle-mounted systems, in particular to a vehicle-mounted audio control method, a vehicle-mounted audio control device and a vehicle-mounted system.
Background
The vehicle-mounted system is an automobile electronic device which provides safety, environmental protection and comfort functions and services by applying technologies such as embedded computers, satellite positioning, communication, control and the like. Along with the popularization of the intelligent Android system, the Android-based vehicle-mounted system gradually becomes a mainstream system of the vehicle-mounted central control unit, the requirement of the vehicle-mounted system on audio tone quality Processing is higher and higher, so that the traditional sound effect IC (integrated Circuit chip) cannot meet the requirement, and an independent DSP (Digital Signal Processing) hardware system with professional sound and sound effect Processing becomes a main element for improving the tone quality of the vehicle-mounted system.
However, the existing Android system cannot integrate a hardware system independent of a DSP and cannot meet the requirements of a scene with multiple external sound sources of the vehicle-mounted audio, so that the existing vehicle-mounted audio control method cannot be suitable for the requirements of multiple scenes, and the sound quality and the sound effect of the vehicle-mounted system cannot meet the requirements of users.
Disclosure of Invention
In order to solve the problems, the invention provides a vehicle-mounted audio control method, a vehicle-mounted audio control device and a vehicle-mounted system, which are suitable for various scene requirements and improve the tone quality and sound effect of the vehicle-mounted system.
In order to achieve the purpose, the invention provides the following technical scheme:
a vehicle-mounted audio control method is applied to a processor of a vehicle-mounted system, the vehicle-mounted system comprises the processor and a DSP assembly connected with the processor, the DSP assembly is provided with an external sound source interface and is connected with an audio output module; the method comprises the following steps:
acquiring audio information, wherein the audio information at least comprises one type of sub audio;
analyzing the audio information to obtain the priority of sub-audio and the mixed audio corresponding to the audio information;
generating target audio information based on the priority of the sub audio and the mixed audio;
and outputting the target audio information.
Optionally, the acquiring the audio information includes:
acquiring audio according to the audio attribute characteristics to obtain audio information;
the audio attribute features include: a native source attribute feature and a radio source attribute feature.
Optionally, the acquiring the audio according to the audio attribute feature to obtain the audio information includes:
acquiring audio with the attribute characteristics of a native sound source by using the type of a sound track played by the native audio to obtain first audio information;
and collecting the audio with the attribute characteristics of the sound source of the radio by using a packaging interface mode to obtain second audio information.
Optionally, the method further comprises:
collecting the playing state information of the audio information;
and if the playing state information meets a specific condition, generating an updating instruction, wherein the updating instruction is used for updating the acquired audio information.
Optionally, the method further comprises:
acquiring application scene information of a vehicle-mounted system;
collecting configuration information matched with the application scene information;
and generating an audio strategy configuration file based on the configuration information.
Optionally, the generating target audio information based on the priority of the sub audio and the mixed audio includes:
and generating target audio information based on the audio strategy configuration file, the priority of the sub audio and the mixed audio.
An in-vehicle audio control device is applied to an in-vehicle system, and the device comprises:
the device comprises an acquisition unit, a processing unit and a processing unit, wherein the acquisition unit is used for acquiring audio information which at least comprises one type of sub audio;
the analysis unit is used for analyzing the audio information to obtain the priority of the sub-audio and the mixed audio corresponding to the audio information;
a generating unit configured to generate target audio information based on the priority of the sub audio and the mixed audio;
an output unit for outputting the target audio information.
Optionally, the obtaining unit includes:
the acquisition subunit is used for acquiring audio according to the audio attribute characteristics to obtain audio information;
the audio attribute features include: the original sound source attribute characteristics and the radio sound source attribute characteristics;
wherein the acquisition subunit is specifically configured to:
acquiring audio with the attribute characteristics of a native sound source by using the type of a sound track played by the native audio to obtain first audio information;
and collecting the audio with the attribute characteristics of the sound source of the radio by using a packaging interface mode to obtain second audio information.
Optionally, the apparatus further comprises:
the information updating unit is used for acquiring the playing state information of the audio information; if the playing state information meets a specific condition, generating an updating instruction, wherein the updating instruction is used for updating the acquired audio information;
the file generation unit is used for acquiring application scene information of the vehicle-mounted system; collecting configuration information matched with the application scene information; and generating an audio strategy configuration file based on the configuration information.
An in-vehicle system, the in-vehicle system comprising:
the system comprises a processor and a DSP assembly connected with the processor, wherein the DSP assembly is provided with an external sound source interface and is connected with an audio output module;
the external sound source interface is used for connecting external sound source equipment and can be used for collecting audio information;
the processor is used for executing the vehicle audio control method.
Compared with the prior art, the vehicle-mounted audio control method, the vehicle-mounted audio control device and the vehicle-mounted system are provided, the vehicle-mounted system comprises the DSP component, the vehicle-mounted audio control method is based on the collection of audio information, then based on the priority of sub-audio and mixed audio, target audio information is generated, and the target audio information is output. Because the corresponding generation mode can be selected according to the priority of the audio and the type of the mixed audio to generate the target audio information, the target audio information can better meet the scene requirement of audio output, and the audio output effect is also improved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.
FIG. 1 is a schematic diagram of audio hardware access of a vehicle system according to an embodiment of the present invention;
fig. 2 is a schematic flowchart of a car audio control method according to an embodiment of the present invention;
FIG. 3 is a flowchart illustrating a DSP-based audio management method according to an embodiment of the present invention;
FIG. 4 is a diagram illustrating an audio management strategy based on DSP according to an embodiment of the present invention;
fig. 5 is a diagram of an audio policy configuration according to an embodiment of the present invention;
fig. 6 is a flowchart of an audio policy controller according to an embodiment of the present invention;
fig. 7 is a schematic structural diagram of a car audio control device according to an embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The terms "first" and "second," and the like in the description and claims of the present invention and the above-described drawings are used for distinguishing between different objects and not for describing a particular order. Furthermore, the terms "comprising" and "having," as well as any variations thereof, are intended to cover non-exclusive inclusions. For example, a process, method, system, article, or apparatus that comprises a list of steps or elements is not set forth for a listed step or element but may include steps or elements not listed.
The embodiment of the invention provides a vehicle-mounted audio control method which is applied to a processor of a vehicle-mounted system. In the embodiment of the invention, the vehicle-mounted system comprises a processor and a DSP assembly connected with the processor, wherein the DSP assembly is provided with an external sound source interface and is connected with an audio output module.
For example, in the existing vehicle-mounted system, because the traditional sound effect IC cannot meet the requirements, an independent DSP hardware system is added, which is responsible for independently processing sound effects and sound quality, because of the limitation of the Android system to the external sound source management of the vehicle-mounted device, the external sound sources (the radio and the AUX sound sources) are directly connected to the DSP chip (the DSP component), the ARM chip (the processor of the vehicle-mounted system) outputs three independent paths (is 0, is1 and spdif) to the DSP chip, and then the DSP outputs the processed audio to the audio output module (for example, a four-way speaker and a heavy bass speaker). Fig. 1 shows a specific schematic diagram of audio hardware access of the vehicle system. In fig. 1, the processor is an ARM-Android system, the DSP module is an external DSP system, which is connected to the radio and the AUX sound source through an external sound source interface, and the audio output module includes a front left speaker, a front right speaker, a rear left speaker, a rear right speaker, and a subwoofer.
Referring to fig. 2, a schematic flowchart of a car audio control method provided in an embodiment of the present application is shown, where the method includes:
s101, obtaining audio information.
The audio information includes at least one type of sub-audio. In the embodiment of the application, the audio information can be acquired according to the audio attribute characteristics to obtain the audio information. The audio attribute features include a native sound source attribute feature and a radio sound source attribute feature. Therefore, the audio with the original sound source attribute characteristics can be collected by utilizing the type of the audio track played by the original audio to obtain first audio information; and collecting the audio with the attribute characteristics of the sound source of the radio by using a packaging interface mode to obtain second audio information.
For example, the state of playing an Android native sound source (navigation sound Stream, bluetooth telephone Stream, key sound Stream, warning sound Stream, voice control Stream, media sound Stream) is collected according to the type of a track played by the Android native AudioTrack, and then the states of a radio playing state, an AUX playing state, a backing state, voice control and the like are collected through an interface mode of a packaging system, so that the collection of audio information is realized.
S102, analyzing the audio information to obtain the priority of the sub-audio and the mixed audio corresponding to the audio information;
s103, generating target audio information based on the priority of the sub audio and the mixed audio;
and S104, outputting the target audio information.
After the audio information is obtained, the audio information needs to be analyzed to obtain the priority of each sub-audio and the mixed audio in the audio information, the configuration can be performed according to the priority of different audios to obtain the target audio information with the optimal sound effect, and then the audio output module of the vehicle-mounted system outputs the target audio information.
Specifically, application scene information of the vehicle-mounted system can be acquired; collecting configuration information matched with the application scene information; and generating an audio strategy configuration file based on the configuration information. Therefore, the audio control and output strategies corresponding to different scenes can be obtained according to the audio strategy configuration file.
The method further comprises the steps of collecting playing state information of the audio information; and if the playing state information meets a specific condition, generating an updating instruction, wherein the updating instruction is used for updating the acquired audio information.
In order to ensure the accuracy of the audio state, the collector is also responsible for Android native AudioTrack broadcast death monitoring, radio application death monitoring, AUX application death, backing application death monitoring and voice control death monitoring, and when death is monitored, the collector timely informs the audio policy controller of updating the state.
A vehicle-mounted audio control method comprises a DSP assembly, wherein the vehicle-mounted audio control method is used for collecting audio information, generating target audio information based on the priority of sub-audio and mixed audio, and outputting the target audio information. Because the corresponding generation mode can be selected according to the priority of the audio and the type of the mixed audio to generate the target audio information, the target audio information can better meet the scene requirement of audio output, and the audio output effect is also improved.
For example, the audio policy control part is mainly composed of an audio state collector, an audio policy controller, an audio policy configuration file, and a DSP service, and as shown in fig. 3, a flowchart of the audio management method based on the DSP is shown. Wherein, the Android standard Audio Track Audio playback/pause includes: navigation audio stream start/end, bluetooth telephone stream start/end, key audio stream start/end, warning audio stream start/end, voice control stream start/end, media audio stream start/end; the APP calls the system interface to control the radio playing/stopping, AUX playing/stopping, backing starting/ending and voice control starting/ending. The audio is collected through the audio state collector and then sent to the audio strategy controller, the audio strategy controller calls the audio strategy configuration file, then the selection of arm equipment output equipment and the adjustment of stream audio track mixing volume are carried out, and then the audio strategy configuration file is output to the Android Q mixing volume controller. And the audio strategy controller can also perform main volume adjustment, FM/AUX/ARM sound mixing adjustment and sound source switching/output channel switching to DSP service, and then control the plug-in DSP system through a serial port. And adjusting the Android native Stream volume to an Android mixing volume controller.
And the audio strategy controller analyzes the audio strategy configuration file during initialization and processes logics such as sound mixing, sound source switching, sound volume adjustment and the like according to the audio state and the audio strategy configuration file provided by the collector. The audio policy profile contains sound type priority and mixing policy components as shown in fig. 4. Wherein the audio policy profile includes sound type priorities that are from high to low: backing a car, Bluetooth telephone, key tone, warning tone, voice control, navigation tone, media tone (including FM/AUX). The sound mixing strategy comprises the following steps: under the condition of backing a car, the volume is adjusted to 10 by the normal low-priority sound of key tones; muting the low-priority sound under the Bluetooth telephone; outputting key tones; muting a low-priority sound under warning sound and muting a low-priority sound under voice control; the media tone under the navigation tone is adjusted to the navigation tone volume-2 level, the media tone (including FM/AUX) lowest priority.
Suitable audio policies may be configured, as desired, such as the audio policy shown in figure 5, when the audio state collector informs the audio state change, the priority of the sound type is judged firstly, the priority is higher than the priority of the audio type, for example, the configuration of the backing priority is the highest, and an audio strategy that all the sounds are turned down to the volume of 10 under the condition of backing is configured, if the collector informs the start of backing, whether an arm audio track is played currently is judged, if a played sound source exists, the Android mixing volume controller of audioploicyservice is called to temporarily set the mixing volume of the track to 10, when the collector informs the end of backing, the interface is called to recover the original volume of the audio track, and if an external sound source (FM/AUX) is currently played, controlling the DSP service to set the temporary sound mixing volume of the external sound source to be 10, and similarly, restoring the default volume of the external sound source when the backing is finished; the flow chart shown in fig. 6 clearly shows the processing flow, and similarly, the processing of the navigation sound is also set according to the policy configuration, which is not described herein again. Besides volume adjustment, the audio policy controller also comprises logic control such as external power supply switching (ARM/AUX/radio) and output channel selection.
The DSP service has the main function of interacting with the DSP hardware system, because the DSP hardware system is an independent system, the equalizer, sound effect, sound field, high-pass/low-pass filtering, output channel selection and sound source switching provided by the DSP system are all completed by the DSP service, each parameter of the DSP set by a user before the DSP service is loaded from a database when the DSP service is initialized, then the value is written into the DSP system through a serial port module, the DSP service is responsible for service logic encapsulation of the parameters of the sound effect and the like, such as mute, sound mixing, sound field setting, factory setting and the like, a sound effect APP is communicated with the DSP service through a DSP manager, the APP can carry out volume adjustment, EQ adjustment, sound field adjustment, delay adjustment, high-pass/low-pass filtering adjustment and the like through the DSP manager, the DSP service sends related sound effect parameters set by the DSP management and the commands of the audio strategy manager, such as source switching, channel switching, meanwhile, the data set by the user is saved in the database for storage. The detailed flow is shown in fig. 6.
In the embodiment of the application, by adding a DSP hardware system, externally connecting a radio and an AUX sound source module, and providing a professional equalizer, sound effect, time delay, high-low pass filtering and the like for app, the tone quality and the sound effect of the system can be obviously improved; by adding the audio state collector and the audio strategy controller and combining the control of DSP service, the characteristic of Android native audio management can be fully utilized, so that an external audio source (AUX/FM) and the DSP are perfectly integrated into the audio and audio source management of an Android system. Through the audio strategy configuration file, the audio requirement of the specific scene based on Android vehicle can be configured in a more flexible mode, and a good foundation is provided for future expansion. In addition, the DSP service is not limited to a specific DSP hardware system, and since the DSP service packages the service logic and then replaces the DSP or the sound effect IC, only the logic of the audio service package needs to be reconstructed, thereby greatly facilitating secondary development.
In an embodiment of the present invention, an in-vehicle audio control apparatus is provided, referring to fig. 7, applied to an in-vehicle system, the apparatus including:
an obtaining unit 10, configured to obtain audio information, where the audio information includes at least one type of sub audio;
the analysis unit 20 is configured to analyze the audio information to obtain a priority of a sub audio and a mixed audio corresponding to the audio information;
a generating unit 30 for generating target audio information based on the priority of the sub audio and the mixed audio;
an output unit 40 for outputting the target audio information.
On the basis of the above embodiment, the acquiring unit includes:
the acquisition subunit is used for acquiring audio according to the audio attribute characteristics to obtain audio information;
the audio attribute features include: the original sound source attribute characteristics and the radio sound source attribute characteristics;
wherein the acquisition subunit is specifically configured to:
acquiring audio with the attribute characteristics of a native sound source by using the type of a sound track played by the native audio to obtain first audio information;
and collecting the audio with the attribute characteristics of the sound source of the radio by using a packaging interface mode to obtain second audio information.
On the basis of the above embodiment, the apparatus further includes:
the information updating unit is used for acquiring the playing state information of the audio information; if the playing state information meets a specific condition, generating an updating instruction, wherein the updating instruction is used for updating the acquired audio information;
the file generation unit is used for acquiring application scene information of the vehicle-mounted system; collecting configuration information matched with the application scene information; and generating an audio strategy configuration file based on the configuration information.
Correspondingly, the embodiment of the invention also provides a vehicle-mounted system, which comprises:
the system comprises a processor and a DSP assembly connected with the processor, wherein the DSP assembly is provided with an external sound source interface and is connected with an audio output module;
the external sound source interface is used for connecting external sound source equipment and can be used for collecting audio information;
the processor is used for executing the vehicle audio control method in any one of the above embodiments.
The invention provides a vehicle-mounted audio control method, a vehicle-mounted audio control device and a vehicle-mounted system. Because the corresponding generation mode can be selected according to the priority of the audio and the type of the mixed audio to generate the target audio information, the target audio information can better meet the scene requirement of audio output, and the audio output effect is also improved.
The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other. The device disclosed by the embodiment corresponds to the method disclosed by the embodiment, so that the description is simple, and the relevant points can be referred to the method part for description.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (10)
1. A vehicle-mounted audio control method is characterized in that the vehicle-mounted audio control method is applied to a processor of a vehicle-mounted system, the vehicle-mounted system comprises the processor and a DSP assembly connected with the processor, the DSP assembly is provided with an external sound source interface and is connected with an audio output module; the method comprises the following steps:
acquiring audio information, wherein the audio information at least comprises one type of sub audio;
analyzing the audio information to obtain the priority of sub-audio and the mixed audio corresponding to the audio information;
generating target audio information based on the priority of the sub audio and the mixed audio;
and outputting the target audio information.
2. The method of claim 1, wherein the obtaining audio information comprises:
acquiring audio according to the audio attribute characteristics to obtain audio information;
the audio attribute features include: a native source attribute feature and a radio source attribute feature.
3. The method of claim 2, wherein the acquiring audio according to the audio attribute feature to obtain audio information comprises:
acquiring audio with the attribute characteristics of a native sound source by using the type of a sound track played by the native audio to obtain first audio information;
and collecting the audio with the attribute characteristics of the sound source of the radio by using a packaging interface mode to obtain second audio information.
4. The method of claim 1, further comprising:
collecting the playing state information of the audio information;
and if the playing state information meets a specific condition, generating an updating instruction, wherein the updating instruction is used for updating the acquired audio information.
5. The method of claim 1, further comprising:
acquiring application scene information of a vehicle-mounted system;
collecting configuration information matched with the application scene information;
and generating an audio strategy configuration file based on the configuration information.
6. The method of claim 5, wherein generating target audio information based on the priority of the sub-audio and the mixed audio comprises:
and generating target audio information based on the audio strategy configuration file, the priority of the sub audio and the mixed audio.
7. An in-vehicle audio control apparatus, applied to an in-vehicle system, the apparatus comprising:
the device comprises an acquisition unit, a processing unit and a processing unit, wherein the acquisition unit is used for acquiring audio information which at least comprises one type of sub audio;
the analysis unit is used for analyzing the audio information to obtain the priority of the sub-audio and the mixed audio corresponding to the audio information;
a generating unit configured to generate target audio information based on the priority of the sub audio and the mixed audio;
an output unit for outputting the target audio information.
8. The apparatus of claim 7, wherein the obtaining unit comprises:
the acquisition subunit is used for acquiring audio according to the audio attribute characteristics to obtain audio information;
the audio attribute features include: the original sound source attribute characteristics and the radio sound source attribute characteristics;
wherein the acquisition subunit is specifically configured to:
acquiring audio with the attribute characteristics of a native sound source by using the type of a sound track played by the native audio to obtain first audio information;
and collecting the audio with the attribute characteristics of the sound source of the radio by using a packaging interface mode to obtain second audio information.
9. The apparatus of claim 7, further comprising:
the information updating unit is used for acquiring the playing state information of the audio information; if the playing state information meets a specific condition, generating an updating instruction, wherein the updating instruction is used for updating the acquired audio information;
the file generation unit is used for acquiring application scene information of the vehicle-mounted system; collecting configuration information matched with the application scene information; and generating an audio strategy configuration file based on the configuration information.
10. An in-vehicle system, characterized in that the in-vehicle system comprises:
the system comprises a processor and a DSP assembly connected with the processor, wherein the DSP assembly is provided with an external sound source interface and is connected with an audio output module;
the external sound source interface is used for connecting external sound source equipment and can be used for collecting audio information;
the processor is configured to execute the in-vehicle audio control method according to any one of claims 1 to 6.
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| CN114265573B (en) * | 2021-12-24 | 2023-08-29 | 苏州智行畅联科技有限公司 | Sound effect control method and system and central control vehicle |
| CN114475423A (en) * | 2022-01-29 | 2022-05-13 | 奇瑞汽车股份有限公司 | Audio playing control method and device and computer storage medium |
| CN114475423B (en) * | 2022-01-29 | 2023-09-26 | 奇瑞汽车股份有限公司 | Audio play control method and device and computer storage medium |
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