CN115348505A - Audio volume adjusting method, device, medium and equipment - Google Patents
Audio volume adjusting method, device, medium and equipment Download PDFInfo
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Abstract
The invention provides a method, a device, a medium and equipment for adjusting audio volume. The audio volume adjusting method comprises the following steps: acquiring and identifying a current driving scene; before audio is played, the audio is converted into PCM audio stream, and the volume of the PCM audio stream is adjusted to the volume corresponding to the current driving scene according to the corresponding relation between the preset driving scene and the volume; and playing the audio according to the adjusted volume. The invention can dynamically adjust the volume of the audio stream of the audio to be played by identifying the driving scene, and is beneficial to improving the driving experience of a user.
Description
Technical Field
The present invention relates to the field of audio playing technologies, and in particular, to a method, an apparatus, a medium, and a device for adjusting audio volume.
Background
Control of audio playback at this stage often requires manual adjustment by the user. Taking the playing of the vehicle-mounted audio as an example, a user needs to adjust the playing volume of the audio by controlling a physical operation key or a touch screen of the vehicle-mounted infotainment system. The volume adjustment is essentially to adjust the set volume of the vehicle infotainment system, while the volume of the audio stream itself is fixed and not adjusted accordingly, and the playing volume of the audio is dependent on the set volume of the system.
The operation of adjusting the playing volume is tedious, the driver is easy to be distracted, the safe driving is not facilitated, and the traditional audio volume adjusting mode cannot meet the increasing user requirements.
Disclosure of Invention
In view of the above drawbacks of the prior art, an object of the present invention is to provide a method, an apparatus, a medium, and a device for adjusting audio volume, which are used to solve the technical problem that the playing volume of audio cannot be adjusted automatically and intelligently in the prior art.
To achieve the above and other related objects, the present invention provides a method for adjusting a volume of audio, comprising: acquiring and identifying a current driving scene; before audio is played, the audio is converted into PCM audio stream, and the volume of the PCM audio stream is adjusted to the volume corresponding to the current driving scene according to the corresponding relation between the preset driving scene and the volume; and playing the audio according to the adjusted volume.
In an embodiment of the present invention, the audio includes: TTS speech, music audio, broadcast audio and radio audio.
In an embodiment of the present invention, the step of acquiring and identifying the current driving scene includes: collecting and analyzing audio and video information in the vehicle to identify a current driving scene in the vehicle; or receiving event information sent by the external equipment so as to identify the current driving scene in the vehicle.
In one embodiment of the invention, the driving scenes in the vehicle are at least divided into a common driving scene, a dangerous driving scene and a sleeping driving scene; the method further comprises the following steps: under the common driving scene, keeping the initial volume of the PCM audio stream unchanged, and then carrying out voice broadcasting; in the dangerous driving scene, adjusting the volume of the PCM audio stream to a preset volume value larger than the initial volume, and then carrying out voice broadcast; and under the sleeping driving scene, adjusting the volume of the PCM audio stream to a preset volume value smaller than the initial volume, and then carrying out voice broadcast.
In an embodiment of the present invention, the step of adjusting the volume of the PCM audio stream to be greater than the initial volume comprises: analyzing historical playing data of a user, and adjusting the volume of the PCM audio stream to the high decibel volume which is used by the user; adjusting the volume of the PCM audio stream to less than the initial volume comprises: and analyzing historical playing data of the user, and adjusting the volume of the PCM audio stream to the low decibel volume which is used by the user.
To achieve the above and other related objects, the present invention provides an audio volume adjusting device, including: the scene recognition module is used for acquiring and recognizing the current driving scene; the volume adjusting module is used for converting the audio into a PCM audio stream, and adjusting the volume of the PCM audio stream to the volume corresponding to the current driving scene according to the corresponding relation between the preset driving scene and the volume; and the audio playing module is used for playing the audio according to the adjusted volume.
In an embodiment of the present invention, the process of acquiring and identifying the current driving scene by the scene identification module includes: collecting and analyzing audio and video information in the vehicle to identify a current driving scene in the vehicle; or event information sent by the external equipment is received, so that the current driving scene in the vehicle is identified.
In one embodiment of the invention, the driving scenes in the vehicle are at least divided into a common driving scene, a dangerous driving scene and a sleeping driving scene; in the common driving scene, the volume adjusting module keeps the initial volume of the PCM audio stream unchanged, and then the voice broadcasting module broadcasts voice; in the dangerous driving scene, the volume adjusting module adjusts the volume of the PCM audio stream to a preset volume value larger than the initial volume, and then the voice broadcasting module broadcasts voice; under the sleeping driving scene, the volume adjusting module adjusts the volume of the PCM audio stream to be smaller than a preset volume value of the initial volume, and then the voice broadcasting module carries out voice broadcasting.
In an embodiment of the present invention, the process of adjusting the volume of the PCM audio stream to be greater than the initial volume by the volume adjusting module includes: analyzing historical playing data of a user, and adjusting the volume of the PCM audio stream to the high decibel volume which is used by the user; the process of the volume adjustment module adjusting the volume of the PCM audio stream to less than the initial volume comprises: and analyzing historical playing data of the user, and adjusting the volume of the PCM audio stream to the low decibel volume which is used by the user.
To achieve the above and other related objects, the present invention provides a computer-readable storage medium, in which a computer program is stored, and when the computer program is loaded and executed by a processor, the computer program implements the volume adjusting method for voice broadcasting.
To achieve the above and other related objects, the present invention provides an electronic device comprising: a processor and a memory; wherein the memory is for storing a computer program; the processor is used for loading and executing the computer program so as to enable the electronic equipment to execute the volume adjusting method for voice broadcasting.
As described above, the method, the device, the medium and the equipment for adjusting the audio volume according to the present invention can identify a driving scene, automatically adjust the volume of the audio stream of the audio to be played according to the driving scene, and play the audio stream without manually adjusting the play volume by a user, thereby effectively avoiding distraction of a driver, improving a driving safety factor, facilitating use by the user, improving user experience, and providing a comfortable driving environment for the user.
Drawings
Fig. 1 is a schematic view illustrating an application scenario of the audio volume adjusting method according to an embodiment of the present invention.
Fig. 2 is a flowchart illustrating an audio volume adjusting method according to an embodiment of the invention.
FIGS. 3A-3B are diagrams illustrating the PCM audio before and after conditioning, respectively, according to an embodiment of the present invention.
Fig. 4 is a block diagram of an audio volume adjusting device according to an embodiment of the invention.
Fig. 5 is a schematic structural diagram of an electronic device according to an embodiment of the invention.
Detailed Description
The following embodiments of the present invention are provided by way of specific examples, and other advantages and effects of the present invention will be readily apparent to those skilled in the art from the disclosure herein. The invention is capable of other and different embodiments and of being practiced or of being carried out in various ways, and its several details are capable of modification in various respects, all without departing from the spirit and scope of the present invention. It should be noted that the features in the following embodiments and examples may be combined with each other without conflict.
It should be noted that the drawings provided in the following embodiments are only for illustrating the basic idea of the present invention, and the drawings only show the components related to the present invention rather than the number, shape and size of the components in actual implementation, and the type, quantity and proportion of the components in actual implementation may be changed freely, and the layout of the components may be more complicated.
Currently, the control of audio playback is typically manually adjusted by the user. Referring to fig. 1, taking the playing of the car audio as an example, a user needs to adjust the playing volume of the audio by controlling a touch screen 1 or physical operation keys 2 (keys, knobs, etc.) of the car infotainment system. The categories of audio include, but are not limited to: music audio, broadcast audio, station audio, TTS speech, etc. Among them, TTS technology (Text To Speech, i.e., "from Text To voice") is a very common voice broadcast technology in a vehicle.
The volume adjustment is essentially to adjust the set volume of the vehicle infotainment system, while the volume of the audio stream itself is fixed and not adjusted accordingly, and the playing volume of the audio is dependent on the set volume of the system. Taking TTS voice as an example, the same volume mode is generally adopted at present, that is, the volume of the broadcasted sound depends on the media volume of the playing system or the TTS volume, and the volume of the TTS audio stream itself is basically fixed.
In an actual audio playing scene, the volume needs to be increased and decreased, and the volume does not need to be controlled by the volume of the playing system, so that the volume of the audio stream needs to be changed.
As shown in fig. 2, in view of the above problems in the prior art, the present embodiment provides an audio volume adjusting method, which is executed by an electronic device, where the electronic device may be an electronic device with an audio playing function or an electronic device without an audio playing function, such as a car machine, a smart phone, a tablet computer, and the like, and the speech of the present embodiment is specifically TTS speech.
The audio volume adjusting method of the embodiment specifically includes the following steps:
s21: and acquiring and identifying the current driving scene.
Specifically, before the step is executed, a manufacturer or a user may set several driving scenes and the audio playing volume corresponding to each driving scene, where the audio playing volume may be a preset volume value or a value recommended by the intelligent AI according to the historical usage habits of the user.
By way of example, driving scenarios within a vehicle may include: a general driving scene, a dangerous driving scene and a sleeping driving scene.
The dangerous driving scene is a driving scene in which a user needs to be reminded by voice, such as fatigue driving, collision early warning, traffic light identification and the like, when driving. The audio playing volume corresponding to the dangerous driving scene is greater than that of the ordinary driving scene, if the playing volume corresponding to the ordinary driving scene is 10, the audio playing volume corresponding to the dangerous driving scene is 12, and therefore the voice reminding effect is improved through the increase of the volume.
The sleeping driving scene is a driving scene in which a child is sleepy and sleeps when a user drives. The sleeping driving scene needs a quiet environment in the vehicle, which is helpful for the rest of children, so the audio playing volume corresponding to the sleeping driving scene should be smaller than that of the common driving scene, for example, the playing volume corresponding to the common driving scene is 10, and the audio playing volume corresponding to the sleeping driving scene is 8. The user is reminded of needing to adjust the air conditioner, the media sound and the like by pressing down the audio broadcasting volume, so that the influence on the sleep of the children caused by overlarge broadcasting sound can be effectively avoided.
Specifically, the modes of acquiring and identifying the current driving scene include, but are not limited to, the following:
and in the first mode, audio and video information in the vehicle is collected and analyzed so as to identify the current driving scene in the vehicle.
For example, the car machine obtains audio and video information in the car through a microphone and a camera in the car, can analyze the blinking condition of the driver through an image recognition technology, and judges whether the driver is in fatigue driving, and if the driver is in fatigue driving, the current driving scene in the car is considered as a dangerous driving scene; keywords spoken by people in the vehicle can be acquired through a voice recognition technology, such as 'XX trapped' and 'XX asleep', so that the current driving scene in the vehicle can be judged to be a sleeping driving scene. Since how to recognize the part of the driving scene is not the focus of the improvement of the present invention, it is not described in detail herein.
And secondly, receiving event information sent by the external equipment, and identifying the current driving scene in the vehicle according to the event information.
For example, when a user answers a call, the smart phone of the user sends event information that the user is answering the call to the car machine, and the car machine determines that the current driving scene is that the user is talking after receiving the event information.
For another example, when the user hangs up the phone, the smart phone of the user may send event information indicating that the user has finished talking to the car machine, and the car machine determines that the current driving scene is a common driving scene after receiving the event information. The audio playing volume corresponding to the driving scene of the user answering the call is smaller than that of the common driving scene, so that the call of the user is prevented from being disturbed.
S22: the audio is converted to a PCM audio stream before playing the audio.
PCM is an abbreviation of the english Pulse-code modulation, and chinese translation is Pulse code modulation. PCM coding is a technique for converting sound from analog to digital, and its principle is simply to sample an analog signal at a fixed frequency, the sampled signal looks like a series of consecutive pulses of different amplitudes in waveform, the amplitudes of the pulses are quantized with a certain precision, and the quantized values are continuously output, transmitted, processed or recorded into a storage medium, all of which constitute the process of generating digital audio.
S23: and adjusting the volume of the PCM audio stream to the volume corresponding to the current driving scene according to the corresponding relation between the preset driving scene and the volume.
For example, in the normal driving scenario, the initial volume of the PCM audio stream is kept unchanged; in the dangerous driving scene, adjusting the volume of the PCM audio stream to a preset volume value larger than the initial volume, or adjusting the volume of the PCM audio stream to a high decibel volume used by a user by analyzing historical playing data of the user; and under the sleeping driving scene, adjusting the volume of the PCM audio stream to a preset volume value smaller than the initial volume, or adjusting the volume of the PCM audio stream to the low decibel volume customary by the user by analyzing historical playing data of the user.
Specifically, adjusting the PCM audio stream to a preset volume value larger than the initial volume comprises: the sampled data is multiplied by a number greater than 1 and it is ensured that no overflow occurs. 3A-3B, which are graphs of a PCM audio before and after conditioning. Similarly, adjusting the PCM audio stream to a preset volume value smaller than the initial volume comprises: the sampled data is divided by a number greater than 1 and it is ensured that no overflow occurs. Since the conditioning technique of the PCM audio stream is not an object of the present invention, it is not described in detail herein.
S24: and playing the audio according to the adjusted volume.
All or part of the steps for implementing the above method embodiments may be performed by hardware associated with a computer program. Based on this understanding, the present invention also provides a computer program product comprising one or more computer instructions. The computer instructions may be stored in a computer readable storage medium. The computer-readable storage medium can be any available medium that a computer can store or a data storage device, such as a server, a data center, etc., that is integrated with one or more available media. The usable medium may be a magnetic medium (e.g., floppy Disk, hard Disk, magnetic tape), an optical medium (e.g., DVD), or a semiconductor medium (e.g., solid State Disk (SSD)), among others.
Referring to fig. 4, the present embodiment provides an audio volume adjusting device 40, and since the technical principle of the present embodiment is similar to that of the foregoing method embodiments, repeated descriptions of the same technical details are omitted. The apparatus 40 of the present embodiment includes the following modules:
a scene recognition module 41, configured to obtain a current driving scene and perform recognition;
specifically, audio and video information in the vehicle is collected and analyzed to identify a current driving scene in the vehicle; or event information sent by the external equipment is received, so that the current driving scene in the vehicle is identified.
The volume adjusting module 42 is configured to convert the audio into a PCM audio stream, and adjust the volume of the PCM audio stream to a volume corresponding to the current driving scene according to a corresponding relationship between a preset driving scene and the volume;
specifically, in the common driving scene, the volume adjusting module keeps the initial volume of the PCM audio stream unchanged, and then the voice broadcasting module broadcasts the PCM audio stream in a voice mode; in the dangerous driving scene, the volume adjusting module adjusts the volume of the PCM audio stream to a preset volume value larger than the initial volume, and then the voice broadcasting module broadcasts voice; under the sleeping driving scene, the volume adjusting module adjusts the volume of the PCM audio stream to be smaller than a preset volume value of the initial volume, and then the voice broadcasting module carries out voice broadcasting. The preset volume value can be defined by a manufacturer or a user, or can be high-decibel volume and low-decibel volume obtained by analyzing historical playing data of the user.
And the audio playing module 43 is configured to play the audio according to the adjusted volume.
It should be understood by those skilled in the art that the division of the modules in the embodiment of fig. 4 is only a logical division, and all or part of the actual implementation may be integrated on one or more physical entities. And the modules can be realized in a form that all software is called by the processing element, or in a form that all the modules are realized in a form that all the modules are called by the processing element, or in a form that part of the modules are called by the hardware.
Referring to fig. 5, the embodiment provides an electronic device, which may be a vehicle machine, a portable computer, a smart phone, or the like. In detail, the electronic device comprises at least, connected by a bus: the system comprises a memory and a processor, wherein the memory is used for storing computer programs, and the processor is used for executing the computer programs stored by the memory so as to execute all or part of the steps in the method embodiment.
The above-mentioned system bus may be a Peripheral Component Interconnect (PCI) bus, an Extended Industry Standard Architecture (EISA) bus, or the like. The system bus may be divided into an address bus, a data bus, a control bus, and the like. For ease of illustration, only one thick line is shown, but this does not mean that there is only one bus or one type of bus. The communication interface is used for realizing communication between the database access device and other equipment (such as a client, a read-write library and a read-only library). The Memory may include a Random Access Memory (RAM), and may further include a non-volatile Memory (non-volatile Memory), such as at least one disk Memory.
The Processor may be a general-purpose Processor, including a Central Processing Unit (CPU), a Network Processor (NP), and the like; the Integrated Circuit may also be a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), a Field Programmable Gate Array (FPGA) or other Programmable logic device, a discrete Gate or transistor logic device, or a discrete hardware component.
In summary, the audio volume adjusting method, apparatus, medium and device of the present invention dynamically adjust the volume of the audio stream of the audio to be played through the recognition of the driving scene, thereby facilitating the improvement of the driving experience of the user, effectively overcoming various disadvantages in the prior art and having high industrial utilization value.
The foregoing embodiments are merely illustrative of the principles and utilities of the present invention and are not intended to limit the invention. Any person skilled in the art can modify or change the above-mentioned embodiments without departing from the spirit and scope of the present invention. Accordingly, it is intended that all equivalent modifications or changes which may be made by those skilled in the art without departing from the spirit and scope of the present invention as defined in the appended claims.
Claims (11)
1. A method for adjusting the volume of audio, comprising the steps of:
acquiring and identifying a current driving scene;
before audio is played, the audio is converted into PCM audio stream, and the volume of the PCM audio stream is adjusted to the volume corresponding to the current driving scene according to the corresponding relation between the preset driving scene and the volume;
and playing the audio according to the adjusted volume.
2. The method of claim 1, wherein the audio comprises: TTS speech, music audio, broadcast audio and radio audio.
3. The method of claim 1, wherein the step of acquiring and identifying a current driving scenario comprises:
collecting and analyzing audio and video information in the vehicle to identify a current driving scene in the vehicle; or
And receiving event information sent by the external equipment so as to identify the current driving scene in the vehicle.
4. The method of claim 1, wherein the driving scenarios within the vehicle are classified into at least a general driving scenario, a dangerous driving scenario, and a sleeping driving scenario; the method further comprises the following steps:
under the common driving scene, keeping the initial volume of the PCM audio stream unchanged, and then carrying out voice broadcasting;
in the dangerous driving scene, adjusting the volume of the PCM audio stream to a preset volume value larger than the initial volume, and then carrying out voice broadcast;
and under the sleeping driving scene, adjusting the volume of the PCM audio stream to a preset volume value smaller than the initial volume, and then carrying out voice broadcast.
5. The method of claim 4, wherein,
the step of adjusting the volume of the PCM audio stream to a preset volume value greater than the initial volume comprises: analyzing historical playing data of a user, and adjusting the volume of the PCM audio stream to the high decibel volume which is used by the user;
the step of adjusting the volume of the PCM audio stream to a preset volume value smaller than the initial volume comprises: and analyzing historical playing data of the user, and adjusting the volume of the PCM audio stream to the low decibel volume which is used by the user.
6. An audio volume adjusting device is characterized by comprising modules:
the scene recognition module is used for acquiring and recognizing the current driving scene;
the volume adjusting module is used for converting the audio into a PCM audio stream, and adjusting the volume of the PCM audio stream to the volume corresponding to the current driving scene according to the corresponding relation between the preset driving scene and the volume;
and the audio playing module is used for playing the audio according to the adjusted volume.
7. The device of claim 6, wherein the scene recognition module obtains and recognizes the current driving scene comprises: acquiring and analyzing audio and video information in the vehicle to identify a current driving scene in the vehicle; or event information sent by the external equipment is received, so that the current driving scene in the vehicle is identified.
8. The apparatus of claim 6, wherein the driving scenes in the vehicle are classified into at least a general driving scene, a dangerous driving scene, and a sleeping driving scene;
in the common driving scene, the volume adjusting module keeps the initial volume of the PCM audio stream unchanged, and then the voice broadcasting module broadcasts the PCM audio stream in voice;
in the dangerous driving scene, the volume adjusting module adjusts the volume of the PCM audio stream to a preset volume value larger than the initial volume, and then the voice broadcasting module broadcasts voice;
under the sleeping driving scene, the volume adjusting module adjusts the volume of the PCM audio stream to be smaller than a preset volume value of the initial volume, and then the voice broadcasting module carries out voice broadcasting.
9. The apparatus of claim 8, wherein,
the process of the volume adjustment module adjusting the volume of the PCM audio stream to be greater than the initial volume comprises: analyzing historical playing data of a user, and adjusting the volume of the PCM audio stream to the high decibel volume which is used by the user;
the process of the volume adjustment module adjusting the volume of the PCM audio stream to less than the initial volume comprises: and analyzing historical playing data of the user, and adjusting the volume of the PCM audio stream to the low decibel volume which is used by the user.
10. A computer-readable storage medium in which a computer program is stored, wherein the computer program, when being loaded and executed by a processor, implements a volume adjustment method for a voice broadcast according to any one of claims 1 to 5.
11. An electronic device, comprising: a processor and a memory; wherein,
the memory is used for storing a computer program;
the processor is configured to load and execute the computer program to enable the electronic device to perform the volume adjustment method for voice broadcasting according to any one of claims 1 to 5.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110523795.4A CN115348505A (en) | 2021-05-13 | 2021-05-13 | Audio volume adjusting method, device, medium and equipment |
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| CN202110523795.4A CN115348505A (en) | 2021-05-13 | 2021-05-13 | Audio volume adjusting method, device, medium and equipment |
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| CN202110523795.4A Pending CN115348505A (en) | 2021-05-13 | 2021-05-13 | Audio volume adjusting method, device, medium and equipment |
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