CN205862318U - Many sound cards audio output device under a kind of embedded OS and system - Google Patents
Many sound cards audio output device under a kind of embedded OS and system Download PDFInfo
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- CN205862318U CN205862318U CN201620546237.4U CN201620546237U CN205862318U CN 205862318 U CN205862318 U CN 205862318U CN 201620546237 U CN201620546237 U CN 201620546237U CN 205862318 U CN205862318 U CN 205862318U
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Abstract
This utility model relates to in-vehicle multi-media system technology, particularly relates to the many sound cards audio output device under a kind of embedded OS and system.Many sound cards audio output device under embedded OS, including: CPU module, described CPU module is provided with multiple driver of sound card equipment；Audio DSP module, described CPU module is connected with Audio DSP module by multiple simulations and/or digital audio interface；Multiple sounding modules, described Audio DSP module is provided with multiple output interface, and described each output interface correspondence connects a sounding module.In this utility model, CPU is for the different driver of sound card of different sounding module creations, gather voice data, it is connected with Audio dsp chip by some analog or digital audio interface, and audio frequency exports in different sounding modules the most at last, realize multiple audio frequency and play out on different devices simultaneously, and separate, do not interfere with each other.
Description
Technical field
This utility model relates to in-vehicle multi-media system technology, particularly relates to the many sound cards under a kind of embedded OS
Audio output device and system.
Background technology
Audio frequency, as the most important part of Vehicular multimedia video entertainment system, has particularly significant and indispensable work
With, simultaneously because the existence of numerous audio-source, audio system itself is sufficiently complex, and first, audio-source has radio, CD/DVD to broadcast
Put device, mobile communication module voice output, the output of bluetooth module audio frequency and the navigation sound of the internal output of core board, Ipod sound
Numerous audio types such as pleasure, USB audio frequency and video, system prompt sound.These numerous audio frequency give in-vehicle multi-media system the most just
Abundant function.
How to drive, manage these sources of sound and output channel is requisite function in embedded system, at present,
In android system, the management of different types of source of sound is fairly perfect, and framework is clear, and reliability is high.But for multiple sound resource
Output sound does not provide solution to the application scenarios of different loudspeaker simultaneously, and the loudspeaker output on the most left front driver side is led
While boat sound, the loudspeaker of remaining passenger side continue to play mp3 music, and existing technology cannot solve this difficult problem, existing
Technology is first to be simultaneously outputting to all of loudspeaker after the sound audio mixing of different sources of sound, causes the leading of sound interference driver of passenger
Boat sound, and this application scenarios is the most common in vehicle mounted multimedia field, needs a solution badly.
Utility model content
This utility model provides a kind of foods heat unit, it is intended to solve to be gone out by the most different audio data flow inputs
In different outut devices, and independent mutually, it does not interfere with each other.
This utility model is achieved in that the many sound cards audio output device under a kind of embedded OS, including:
CPU module, described CPU module is provided with multiple driver of sound card equipment；
Audio DSP module, described CPU module is by multiple simulations and/or digital audio interface and Audio DSP module
Connect；
Multiple sounding modules, described Audio DSP module is provided with multiple output interface, and described each output interface correspondence is even
Connect a sounding module.
As further improvement of the utility model, described CPU module is connected by I2C interface and controls Audio DSP
Module.
As further improvement of the utility model, described Audio DSP module is driven by simulation output interface by AMP
Sounding module.
As further improvement of the utility model, the many sound cards audio output device under described embedded OS,
Also including: sound source module, described sound source module is by simulation and/or digital audio interface and/or bi-directional data interface and CPU mould
Block connects.
As further improvement of the utility model, described sound source module includes DVD device, and described DVD device is by string
Mouth is connected with CPU module.
As further improvement of the utility model, described sound source module includes radio devices, described radio devices
It is connected with CPU module by audio interface and I2C interface.
This utility model also provides for the many sound cards audio output system under a kind of embedded OS, including
Application-interface layer, is provided with multiple media input type；
Audio frequency strategic layer；
Audio driven layer, is provided with multiple driver of sound card；
Audio physical layer, is provided with multiple sound card outut device；
Described application-interface layer is connected with audio frequency strategic layer, and described audio frequency strategic layer is connected with audio driven layer, described sound
Frequency driving layer is provided with independent driver of sound card equipment and is connected with each outut device.
As further improvement of the utility model, described application-interface layer is provided with self-defined media enumeration type, described
Audio frequency strategic layer is provided with the broadcasting thread that driver of sound card is corresponding, and described broadcasting thread is connected with self-defined media enumeration type.
As further improvement of the utility model, described audio driven layer is provided with independent driver of sound card, described independent sound
Card drives and is connected with Audio DSP module.
As further improvement of the utility model, described audio driven layer is based on ALSA or OSS audio frequency framework.
The beneficial effects of the utility model are: CPU, for the different driver of sound card of different sounding module creations, gathers sound
Frequency evidence, is connected with Audio dsp chip by some analog or digital audio interface, and audio frequency exports different the most at last
In sounding module simultaneously, it is achieved multiple audio frequency plays out on different devices, and separate, do not interfere with each other.
Accompanying drawing explanation
Fig. 1 is the many sound cards audio output device under a kind of embedded OS that this utility model embodiment provides
Hardware architecture diagram；
Fig. 2 is the many sound cards audio output system under a kind of embedded OS that this utility model embodiment provides
Configuration diagram.
Detailed description of the invention
In order to make the purpose of this utility model, technical scheme and advantage clearer, below in conjunction with accompanying drawing and enforcement
Example, is further elaborated to this utility model.Should be appreciated that specific embodiment described herein is only in order to explain
This utility model, is not used to limit this utility model.
Such as Fig. 1, the many sound cards audio output device under the embedded OS in this utility model embodiment, including:
CPU module 1, described CPU module 1 is provided with multiple driver of sound card equipment；Audio DSP module 2, described CPU module 1 is by many
Individual simulation and/or digital audio interface are connected with Audio DSP module 2；Multiple sounding modules 3, described Audio DSP module 2
Being provided with multiple output interface, described each output interface correspondence connects a sounding module 3.
Wherein, described CPU module 1 is connected by I2C interface and controls Audio DSP module 2.Described Audio DSP mould
Block 2 is driven sounding module 3 by AMP by simulation output interface.
Many sound cards audio output device under described embedded OS, also includes: sound source module 4, described source of sound mould
Block 4 is connected with CPU module 1 by simulation and/or digital audio interface and/or bi-directional data interface.Described sound source module 4 includes
DVD device 41, described DVD device 41 is connected with CPU module 1 by serial ports.Described sound source module 4 includes radio devices 42,
Described radio devices 42 is connected with CPU module 1 by audio interface, I2C interface.
Compared with original system hardware framework, new framework need to increase Audio dsp chip, and this chip should have dynamic
State controls the function of input and output, is i.e. mixed by the source of sound of some inputs by I2C or other control bus marco dsp chips
Close or independent exporting on the simulation OUT interface specified, so that the sound horn specified.
All audiogenic devices are connected with CPU by analog/digital audio interface or bi-directional data interface, it is simple to CPU is unified
Manage all of sound source data.
As in figure 2 it is shown, the many sound cards audio output system under embedded OS in this utility model embodiment, its
It is characterised by, including application-interface layer, is provided with multiple media input type；Audio frequency strategic layer；Audio driven layer, is provided with multiple sound
Card drives；Audio physical layer, is provided with multiple sound card outut device；Described application-interface layer is connected with audio frequency strategic layer, described sound
Frequently strategic layer is connected with audio driven layer, and described audio driven layer is provided with independent driver of sound card equipment with each outut device even
Connect.
Wherein, described application-interface layer is provided with self-defined media enumeration type, and described audio frequency strategic layer is provided with driver of sound card
Corresponding broadcasting thread, described broadcasting thread is connected with self-defined media enumeration type.
Described audio driven layer is provided with independent driver of sound card, and described independent driver of sound card is connected with Audio DSP module.Institute
State audio driven layer for based on ALSA or OSS audio frequency framework.
On the basis of original audio system, for self-defining audio types, create corresponding driver of sound card, and at sound
Frequently strategic layer sets up corresponding relation, then by different driver of sound card collections, the different audio input-output device of broadcasting.
Compared with original software architecture, new framework need to all carry out adaptation from bottom to application layer.
Audio driven layer is required to be each physical audio source and sets up independent driver of sound card equipment, can be based on ALSA or OSS
Audio frequency framework, being the most also required to be Audio dsp chip increases a single driver of sound card, and major function is to control input and output
Passage switching.
Audio frequency strategic layer need to increase the broadcasting thread that each driver of sound card is corresponding, and these threads can only be by corresponding self-defined
Medium type starts, and so can ensure that multithreading starts simultaneously, the voice data stream that independent output is different.
Application-interface layer only need to increase self-defining media enumeration type, existing voice data decoding, resampling, data
The functional modules such as process, audio mixing are without changing, and main audio frequency routing function all completes at strategic layer.
The technical solution of the utility model:
(1) on the premise of not changing existing voice applications layer interface, the medium type that different loudspeaker are corresponding is increased, so
Can not affect existing all application, if not using self-defining medium type, acquiescence uses all of loudspeaker to play；
(2) the single driver of sound card that different loudspeaker are corresponding is increased, so can be independent by different medium types,
It is easy to follow audio dsp chip audio mixing or separates control；
(3) amendment audio frequency policy control layer, couples self-defining medium type and newly-increased driver of sound card；
(4) increase audio frequency dsp chip, the loudspeaker door that different IPs core source of sound is corresponding can be controlled.
Each sound source module is connected with CPU module 1 by data-interface, and CPU module 1 creates for different sounding modules 3
Different driver of sound cards, is gathered voice data, is connected with Audio dsp chip by some analog or digital audio interface, and
Audio frequency exports in different sounding modules 3 the most at last, it is achieved multiple audio frequency plays out simultaneously on different devices, Er Qiexiang
The most independently, it does not interfere with each other.
Above content is to combine concrete preferred implementation further detailed description of the utility model, it is impossible to
Assert that of the present utility model being embodied as is confined to these explanations.Ordinary skill for this utility model art
For personnel, without departing from the concept of the premise utility, it is also possible to make some simple deduction or replace, all should regard
For belonging to protection domain of the present utility model.
Claims (10)
1. the many sound cards audio output device under an embedded OS, it is characterised in that including:
CPU module (1), described CPU module (1) is provided with multiple driver of sound card equipment；
Audio DSP module (2), described CPU module (1) is by multiple simulations and/or digital audio interface and Audio DSP mould
Block (2) connects；
Multiple sounding modules (3), described Audio DSP module (2) is provided with multiple output interface, and described each output interface is corresponding
Connect a sounding module (3).
Many sound cards audio output device under embedded OS the most according to claim 1, it is characterised in that also wrap
Include: described CPU module (1) is connected by I2C interface and controls Audio DSP module (2).
Many sound cards audio output device under embedded OS the most according to claim 1, it is characterised in that described
Audio DSP module (2) is driven sounding module (3) by AMP by simulation output interface.
Many sound cards audio output device under embedded OS the most according to claim 1, it is characterised in that also wrap
Include:
Sound source module (4), described sound source module (4) by simulation and/or digital audio interface and/or bi-directional data interface with
CPU module (1) connects.
Many sound cards audio output device under embedded OS the most according to claim 4, it is characterised in that described sound
Source module (4) includes DVD device (41), and described DVD device (41) is connected with CPU module (1) by serial ports.
Many sound cards audio output device under embedded OS the most according to claim 4, it is characterised in that described sound
Source module (4) includes radio devices (42), and described radio devices (42) is by audio interface, I2C interface and CPU module
(1) connect.
7. one kind exports system based on the many sound cards audio frequency under the embedded OS of device described in any one of claim 1-6
System, it is characterised in that include
Application-interface layer, is provided with multiple media input type；
Audio frequency strategic layer；
Audio driven layer, is provided with multiple driver of sound card；
Audio physical layer, is provided with multiple sound card outut device；
Described application-interface layer is connected with audio frequency strategic layer, and described audio frequency strategic layer is connected with audio driven layer, and described audio frequency drives
Dynamic layer is provided with independent driver of sound card equipment and is connected with each outut device.
Many sound cards audio output system under embedded OS the most according to claim 7, it is characterised in that described should
Being provided with self-defined media enumeration type with interface layer, described audio frequency strategic layer is provided with the broadcasting thread that driver of sound card is corresponding, described
Play thread to be connected with self-defined media enumeration type.
Many sound cards audio output system under embedded OS the most according to claim 7, it is characterised in that described sound
Frequency drives layer to be provided with independent driver of sound card, and described independent driver of sound card is connected with Audio DSP module.
Many sound cards audio output system under embedded OS the most according to claim 7, it is characterised in that described
Audio driven layer is based on ALSA or OSS audio frequency framework.
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| CN201620546237.4U CN205862318U (en) | 2016-06-07 | 2016-06-07 | Many sound cards audio output device under a kind of embedded OS and system |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2018177148A1 (en) * | 2017-03-30 | 2018-10-04 | 腾讯科技（深圳）有限公司 | Method, system and apparatus for playing back audio |
| CN109819391A (en) * | 2019-01-24 | 2019-05-28 | 苏州思必驰信息科技有限公司 | Audio resampling method and device for FreeRTOS single-chip |
| CN112114773A (en) * | 2020-09-18 | 2020-12-22 | 浙江如新智能科技有限公司 | Multi-sound-card management method and system based on Android system |
| CN112365906A (en) * | 2020-12-21 | 2021-02-12 | 上汽大通汽车有限公司 | Method for processing various CHIME sounds of automobile by BSP module based on SOC (system on chip) |
| CN112530544A (en) * | 2021-02-08 | 2021-03-19 | 江苏绿柏智能科技有限公司 | Intelligent operation evaluation and training system |
| CN112752199A (en) * | 2019-10-31 | 2021-05-04 | 通号通信信息集团上海有限公司 | Sound card left and right sound channel independent control device and method based on ALSA framework |
| CN113450835A (en) * | 2021-06-04 | 2021-09-28 | 佛吉亚歌乐电子(丰城)有限公司 | Method, equipment and storage medium for optimizing vehicle-mounted central control noise-free background noise |
| CN114879931A (en) * | 2022-07-11 | 2022-08-09 | 南京芯驰半导体科技有限公司 | Onboard audio path management method and system supporting multiple operating systems |
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2016
- 2016-06-07 CN CN201620546237.4U patent/CN205862318U/en active Active
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2018177148A1 (en) * | 2017-03-30 | 2018-10-04 | 腾讯科技（深圳）有限公司 | Method, system and apparatus for playing back audio |
| CN108668203A (en) * | 2017-03-30 | 2018-10-16 | 腾讯科技（深圳）有限公司 | Audio frequency playing method, system and device |
| CN109819391A (en) * | 2019-01-24 | 2019-05-28 | 苏州思必驰信息科技有限公司 | Audio resampling method and device for FreeRTOS single-chip |
| CN112752199A (en) * | 2019-10-31 | 2021-05-04 | 通号通信信息集团上海有限公司 | Sound card left and right sound channel independent control device and method based on ALSA framework |
| CN112114773A (en) * | 2020-09-18 | 2020-12-22 | 浙江如新智能科技有限公司 | Multi-sound-card management method and system based on Android system |
| CN112365906A (en) * | 2020-12-21 | 2021-02-12 | 上汽大通汽车有限公司 | Method for processing various CHIME sounds of automobile by BSP module based on SOC (system on chip) |
| CN112530544A (en) * | 2021-02-08 | 2021-03-19 | 江苏绿柏智能科技有限公司 | Intelligent operation evaluation and training system |
| CN113450835A (en) * | 2021-06-04 | 2021-09-28 | 佛吉亚歌乐电子(丰城)有限公司 | Method, equipment and storage medium for optimizing vehicle-mounted central control noise-free background noise |
| CN113450835B (en) * | 2021-06-04 | 2023-03-21 | 佛吉亚歌乐电子(丰城)有限公司 | Method, equipment and storage medium for optimizing vehicle-mounted central control soundless time background noise |
| CN114879931A (en) * | 2022-07-11 | 2022-08-09 | 南京芯驰半导体科技有限公司 | Onboard audio path management method and system supporting multiple operating systems |
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