CN111064479A - Radio frequency signal transmission method and device based on wireless audio system - Google Patents
Radio frequency signal transmission method and device based on wireless audio system Download PDFInfo
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- CN111064479A CN111064479A CN201911297511.3A CN201911297511A CN111064479A CN 111064479 A CN111064479 A CN 111064479A CN 201911297511 A CN201911297511 A CN 201911297511A CN 111064479 A CN111064479 A CN 111064479A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/02—Transmitters
- H04B1/04—Circuits
- H04B1/0475—Circuits with means for limiting noise, interference or distortion
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/02—Transmitters
- H04B1/04—Circuits
- H04B2001/0408—Circuits with power amplifiers
- H04B2001/0416—Circuits with power amplifiers having gain or transmission power control
Abstract
The embodiment of the application provides a radio frequency signal transmission method and a radio frequency signal transmission device based on a wireless audio system, which relate to the technical field of wireless communication, and the method comprises the following steps: the receiving device feeds back information to the radio frequency signal output device so that the radio frequency signal output device judges whether the transmitter detects the feedback information sent by the receiving device; the feedback information corresponds to the radio frequency signal received by the receiving device; wherein the radio frequency signal carries audio information; adjusting the initial transmitting power by taking the feedback information as a basis to obtain target transmitting power; and outputting the radio frequency signal corresponding to the target transmitting power to a receiving device. By implementing the implementation mode, the most suitable radio frequency signal can be output, so that the interference of the radio frequency signal output by the radio frequency signal output device in the wireless audio system to other signals can be reduced, the detection sensitivity of other receivers is prevented from being reduced, and the use quality of the wireless audio system can be improved.
Description
Technical Field
The present invention relates to the field of wireless communication technologies, and in particular, to a radio frequency signal transmission method and apparatus based on a wireless audio system.
Background
At present, the use of wireless microphones has been widely spread, however, the problem of mutual interference between multiple microphones is not solved more effectively. The interference problem generated in the multi-microphone application is adjusted by focusing on improving the linearity index of the receiver, for example, optimizing the circuit structure and properly reducing the gain of the receiving link. However, reducing the link gain causes equivalent damage to the interference signal and the useful signal, and therefore, by implementing the processing method commonly used at present, the detection sensitivity of the receiver is also reduced while the gain is reduced, so that the use quality of the wireless audio system is obviously reduced.
Disclosure of Invention
An object of the embodiments of the present application is to provide a radio frequency signal transmission method and apparatus based on a wireless audio system, which can output an optimal radio frequency signal by adjusting a radio frequency signal transmission apparatus, so as to reduce interference of the radio frequency signal carrying audio information in the wireless audio system to other signals, thereby avoiding reduction of detection sensitivity of other receivers, and also improving the use quality of the wireless audio system.
The embodiment of the application provides a radio frequency signal transmission method based on a wireless audio system, which comprises the following steps:
judging whether feedback information sent by a receiving device is detected; the feedback information corresponds to the radio frequency signal received by the receiving device; wherein the radio frequency signal comprises audio information;
adjusting the initial transmitting power by taking the feedback information as a basis to obtain target transmitting power;
and outputting a radio frequency signal corresponding to the target transmitting power to the receiving device.
In the implementation process, the radio frequency signal output device included in the wireless audio system can preferentially send a radio frequency signal carrying audio information to the receiving device, so that the receiving device sends feedback information corresponding to the radio frequency signal, the radio frequency signal output device can detect the feedback information, the initial transmission power is adjusted according to information content included in the feedback information, optimal target transmission power matched with the feedback information is obtained, and then the receiving device can better output audio by outputting the radio frequency signal corresponding to the target transmission power to the receiving device. Therefore, by implementing the implementation mode, the method can automatically and adaptively adjust the transmitting power of the radio frequency signal through the current transmission state of the radio frequency signal carrying the audio information, thereby ensuring that the output power of the radio frequency signal is the lowest, having no influence on audio output, and not reducing the detection sensitivity of a receiving device; meanwhile, the lower output power can avoid generating interference on other signals in the wireless audio system, thereby improving the use quality of the wireless audio system.
Further, the feedback information at least includes the signal strength of the radio frequency signal received by the receiving device and the demodulation threshold of the receiving device.
In the implementation process, the feedback information fed back by the receiving device at least includes the signal strength of the radio frequency signal and the demodulation threshold of the receiving device, and thus, the lower limit content included in the obtained feedback information is limited, which can provide guarantee for information processing, thereby ensuring that various problems cannot occur in the process of adjusting the initial transmission power by the method due to lack of information, and the content included in the limited feedback information can improve the pertinence of information acquisition, which is beneficial to improving the working accuracy of the system.
Further, the step of adjusting the initial transmit power based on the feedback information to obtain the target transmit power includes:
judging whether the signal intensity is larger than the demodulation threshold value;
and when the signal intensity is greater than the demodulation threshold, the initial transmitting power is adjusted downwards to obtain the target transmitting power.
In the implementation process, the method can judge whether the signal intensity of the radio-frequency signal output to the receiving device by the radio-frequency signal output device is greater than the demodulation threshold of the receiving device, and if the signal intensity is greater than the demodulation threshold, the radio-frequency signal output device down-regulates the initial transmitting power to obtain the target transmitting power. Therefore, the implementation of the implementation mode can lower the initial transmitting power so as to reduce the signal intensity of the radio frequency signal, thereby ensuring that the audio frequency is in lower signal intensity without influencing the processing of the receiving device, further avoiding the condition of cross interference and ensuring the audio frequency output quality of the whole wireless audio system.
Further, the step of down-regulating the initial transmitting power to obtain the target transmitting power includes:
and adjusting the initial transmitting power down according to the difference absolute value of the signal intensity and the demodulation threshold value to obtain target transmitting power.
In the implementation process, the initial transmitting power is adjusted according to the absolute value of the difference value between the signal intensity and the demodulation threshold value, so that the transmitting power of the radio frequency signal output device can be accurately adjusted, and the optimal transmitting power is obtained, the accuracy of adjusting the transmitting power can be further improved, and the quality of audio output in the wireless audio system is further ensured.
Further, the method further comprises:
and when the signal intensity is smaller than the demodulation threshold, the initial transmitting power is up-regulated to obtain the target transmitting power.
In the implementation process, when the signal strength of the signal received by the receiving device is smaller than the demodulation threshold, it means that the radio frequency signal is unclear to the receiving device and is therefore insufficient for demodulation, so that the initial transmission power is adjusted up to make the adjusted target transmission power meet the demodulation requirement of the receiving device, thereby ensuring that the radio frequency signal is sufficiently received by the user clearly.
A second aspect of the embodiments of the present application provides a radio frequency signal output apparatus based on a wireless audio system, where the radio frequency signal output apparatus includes:
the judging unit is used for judging whether feedback information sent by the receiving device is detected or not; the feedback information corresponds to the radio frequency signal received by the receiving device; wherein the radio frequency signal comprises audio information;
the adjusting unit is used for adjusting the initial transmitting power by taking the feedback information as a basis to obtain target transmitting power;
and the output unit is used for outputting the radio frequency signal corresponding to the target transmitting power to the receiving device.
In the implementation process, the judgment unit, the adjustment unit and the output unit of the radio frequency signal output device can adjust the transmission power according to the current radio frequency signal transmission condition, so that the radio frequency signal can be ensured to output signals with the optimal transmission power, and the audio transmission quality of the wireless audio system is ensured.
Further, the feedback information at least includes the signal strength of the radio frequency signal received by the receiving device and the demodulation threshold of the receiving device.
In the implementation process, the feedback information fed back by the receiving device at least includes the signal strength of the radio frequency signal and the demodulation threshold of the receiving device, and thus, the lower limit content included in the obtained feedback information is limited, which can provide guarantee for information processing, thereby ensuring that various problems cannot occur in the process of adjusting the initial transmission power by the method due to lack of information, and the content included in the limited feedback information can improve the pertinence of information acquisition, which is beneficial to improving the working accuracy of the system.
Further, the adjusting unit includes:
a judging subunit, configured to judge whether the signal strength is greater than the demodulation threshold;
and the down-regulation subunit is used for performing down-regulation on the initial transmitting power to obtain a target transmitting power when the signal intensity is greater than the demodulation threshold.
In the implementation process, the adjusting unit can decode the feedback information through the judging subunit and the down-regulating subunit, so as to judge whether the signal strength of the radio-frequency signal transmitted before is enough to be demodulated, and adjust the transmitting power of the radio-frequency signal output device when the radio-frequency signal can be demodulated, so that the signal strength of the radio-frequency signal is reduced and kept above a demodulation threshold value, thereby ensuring the audio output effect, reducing the interference between signals and improving the audio output quality of the wireless audio system.
A third aspect of the embodiments of the present application provides an electronic device, including a memory and a processor, where the memory is used to store a computer program, and the processor runs the computer program to make the electronic device execute the radio frequency signal transmission method based on a wireless audio system according to any one of the first aspect of the embodiments of the present application.
A fourth aspect of the present embodiment provides a computer-readable storage medium, which stores computer program instructions, where the computer program instructions, when read and executed by a processor, perform the radio frequency signal transmission method based on a wireless audio system according to any one of the first aspect of the present embodiment.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are required to be used in the embodiments of the present application will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present application and therefore should not be considered as limiting the scope, and that those skilled in the art can also obtain other related drawings based on the drawings without inventive efforts.
Fig. 1 is a schematic flowchart illustrating a radio frequency signal transmission method based on a wireless audio system according to an embodiment of the present application;
fig. 2 is a schematic flowchart of another radio frequency signal transmission method based on a wireless audio system according to an embodiment of the present application;
fig. 3 is a schematic structural diagram of a radio frequency signal transmission apparatus based on a wireless audio system according to an embodiment of the present application;
fig. 4 is a schematic structural diagram of another radio frequency signal transmission apparatus based on a wireless audio system according to an embodiment of the present application.
Detailed Description
The technical solutions in the embodiments of the present application will be described below with reference to the drawings in the embodiments of the present application.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures. Meanwhile, in the description of the present application, the terms "first", "second", and the like are used only for distinguishing the description, and are not to be construed as indicating or implying relative importance.
Example 1
Referring to fig. 1, fig. 1 is a flowchart illustrating a radio frequency signal transmission method based on a wireless audio system according to an embodiment of the present application. The radio frequency signal transmission method based on the wireless audio system can be applied to various audio transmission scenes, wherein a multi-input multi-output multi-terminal wireless audio system is preferred, and particularly, the radio frequency signal transmission method based on the wireless audio system plays a corresponding role in the condition of audio transmission. Meanwhile, it should be noted that the wireless audio system described in this embodiment is a multi-transmission multi-reception wireless audio system, and details thereof are not repeated in this embodiment. The radio frequency signal transmission method based on the wireless audio system comprises the following steps:
s101, judging whether feedback information sent by a receiving device is detected or not, and if so, executing steps S102-S103; if not, ending the process; the feedback information corresponds to the radio frequency signal received by the receiving device; wherein the radio frequency signal comprises audio information; .
In this embodiment, the wireless audio system includes a radio frequency signal output device (i.e., a device with a microphone) and a receiving device, and the two devices can implement a dual function of time-sharing transceiving. In normal communication, an output device (i.e., an rf signal output device) transmits an rf signal (i.e., an rf signal) to a receiving device, so that the receiving device receives and demodulates the rf signal. However, at a certain time period of communication, the receiving apparatus may switch to the transmitting function, and the output apparatus may switch to the receiving function, so that the receiving apparatus transmits the feedback information to the output apparatus.
In this embodiment, the determination method is a method for detecting feedback information.
As an optional implementation manner, the step of determining whether the feedback information sent by the receiving apparatus is detected may include:
intercepting transmission information;
acquiring an information identifier included in transmission information;
judging whether the information identifier is an identifier of feedback information sent by the receiving device, if so, executing the steps S102-S103; if not, the flow is ended.
By implementing the implementation mode, the acquisition method of the feedback information can be limited, so that the acquisition accuracy of the feedback information is improved, and the influence of the mixing of other information on the normal operation of the output device is avoided.
In this embodiment, the receiving device may be various devices such as a sound device and a player, and this is not limited in this embodiment.
In this embodiment, the wireless audio system may include a plurality of output devices and a plurality of receiving devices, which is not limited in this embodiment.
In this embodiment, the feedback information includes feedback information corresponding to a radio frequency signal output by the immediately preceding output device, where the radio frequency signal is a previously output radio frequency signal and is different from a radio frequency signal described later.
In this embodiment, the feedback information corresponds to the rf signal received by the receiving device, and specifically, the feedback information includes signal information (such as signal strength, etc.) of the rf signal and personality information (such as an identifier of the receiving device and a demodulation threshold of the receiving device) of the receiving device.
In this embodiment, the output device and the receiving device may transmit in a one-to-one correspondence, so as to play a role of outputting audio, and at this time, the interference refers to that other output devices interfere with the receiving device in use, so that when the method is used to reduce the signal strength, the interference will be weakened or even eliminated, so as to play a role of suppressing interference.
As an optional implementation manner, before the step of determining whether the feedback information sent by the receiving apparatus is detected, the method may further include:
detecting an operating condition of a wireless audio system;
when the running state is normal running, the process is ended;
when the operation condition is interference operation, acquiring the system type of the wireless audio system;
and acquiring an adjusting parameter corresponding to the system type, and adjusting according to the adjusting parameter.
By implementing the embodiment, the method can be applied to various types of systems, so that the method has stronger applicability and ensured specificity.
In this embodiment, the interference operation refers to the existence of signals interfering with each other in the wireless audio system.
As a further optional implementation manner, before the step of obtaining an adjustment parameter corresponding to the system type and performing adjustment according to the adjustment parameter, the method further includes:
judging whether the system type is a wide area system or not;
if yes, carrying out the homodyne to a plurality of receiving devices in the wireless audio system so as to synchronize the signals received by the plurality of receiving devices, and executing the steps of obtaining an adjusting parameter corresponding to the system type and adjusting according to the adjusting parameter;
if not, the flow is ended.
In this embodiment, the wide area system refers to a system including a single output device and a plurality of receiving devices, for example, a microphone corresponding to a stage with a plurality of sounds.
By implementing the embodiment, the method and the device can be effectively applied to scenes such as stages, play stations and the like, so that one output device can act on a plurality of receiving devices at the same time, and a better output effect can be obtained.
As a further optional implementation manner, before the step of obtaining an adjustment parameter corresponding to the system type and performing adjustment according to the adjustment parameter, the method further includes:
judging whether the system type is a narrow-area system;
if yes, isolating signals of other output devices in the wireless audio system, acquiring an adjustment parameter corresponding to the system type, and adjusting according to the adjustment parameter; the isolation step can enable a single receiving device to perform differential processing and common output when receiving a plurality of radio frequency signals carrying audio information;
if not, the flow is ended.
In this embodiment, a narrow-area system refers to a system including multiple output devices and a single receiving device, for example, the system has multiple microphones and one sound (as in a KTV scene).
By implementing the embodiment, the interference can be further avoided in the scene, thereby improving the audio output quality of the wireless audio system. For example, when multiple microphones are used by multiple persons, the method can ensure that the sound of each person is clearly audible and is not interfered.
As a further optional implementation manner, before the step of obtaining an adjustment parameter corresponding to the system type and performing adjustment according to the adjustment parameter, the method further includes:
judging whether the system type is a private domain system;
if yes, carrying out encryption processing and distance limiting processing on radio frequency signals in the wireless audio system, acquiring adjustment parameters corresponding to the system type, and adjusting according to the adjustment parameters; the step can enable the output device and the receiving device to be suitable for a certain range, avoid monitoring outside the range by users, and improve the safety of radio frequency signal transmission on the basis of improving the tone quality;
if not, the flow is ended.
In this embodiment, the private domain system refers to an in-range interactive system, in which the output device and the receiving device are both bidirectional devices, that is, the output device can be used as the receiving device at a certain time point, and the receiving device is similar to the above.
By implementing the embodiment, the safety of radio frequency signal transmission can be improved, and the audio quality can be improved.
In this embodiment, the output device and the receiving device in the private domain system may both be interphones, and the usage scenario may be in the community.
As a further optional implementation, after performing encryption processing and distance limiting processing on the radio frequency signal in the wireless audio system, obtaining an adjustment parameter corresponding to the type of the system, where the step of performing adjustment according to the adjustment parameter may include:
acquiring a signal intensity limiting parameter and an encryption mode of a private domain system;
the rf signal is initially processed according to the signal strength limiting parameter and the encryption method, and step S101 is performed.
By implementing the embodiment, the safety of the radio frequency signal can be improved.
As a further optional implementation manner, the step of performing preliminary processing on the radio frequency signal according to the signal strength limiting parameter and the encryption manner, and executing step S101 includes:
performing primary processing on the radio frequency signal according to the signal intensity limiting parameter and the encryption mode;
a test signal is output and step S101 is performed.
In this embodiment, the test signal is used to test whether the system is operating normally, and can also test whether the system has interference from other devices that do not belong to the system, such as interference from a monitoring device.
By implementing the embodiment, the stability of the system operation can be further ensured, thereby improving the quality of audio transmission.
And S102, adjusting the initial transmitting power by taking the feedback information as a basis to obtain the target transmitting power.
In this embodiment, the feedback information may include a demodulation threshold of the receiving device and a signal strength of the previous radio frequency signal.
In this embodiment, the initial transmission power is the transmission power of the previous rf signal, and the target transmission power is the adjusted transmission power, i.e. the transmission power of the new rf signal.
In this embodiment, an adjustment mode (such as up-adjustment or down-adjustment) of the initial transmit power is determined according to the feedback information, and the initial transmit power is adjusted according to the obtained adjustment mode to obtain the target transmit power.
And S103, outputting the radio frequency signal corresponding to the target transmitting power to a receiving device.
In this embodiment, the signal strength of the rf signal may be determined by the transmission power.
In this embodiment, the main executing body of the radio frequency signal transmission method based on the wireless audio system may be any device having an audio input function, including but not limited to various electronic devices such as a mobile phone and a tablet, a wireless headset (having a microphone function), a wireless microphone, and the like, and the embodiment is not limited in any way.
It can be seen that, with the implementation of the radio frequency signal transmission method based on the wireless audio system described in fig. 1, the radio frequency signal carrying the audio information can be preferentially sent to the receiving device, so that the receiving device sends the feedback information corresponding to the radio frequency signal, so that the radio frequency signal output device can detect the feedback information, adjust the initial transmission power according to the information content included in the feedback information, obtain the optimal target transmission power matched with the feedback information, and then output the radio frequency signal corresponding to the target transmission power to the receiving device, so that the receiving device can better output the audio. Therefore, by implementing the embodiment, the method can automatically and adaptively adjust the transmitting power of the radio frequency signal through the current radio frequency signal transmission state, thereby ensuring that the output power of the radio frequency signal is the lowest, having no influence on audio output, and not reducing the detection sensitivity of a receiving device; meanwhile, the lower output power can avoid generating interference on other signals in the wireless audio system, thereby improving the use quality of the wireless audio system.
Example 2
Referring to fig. 2, fig. 2 is a schematic flowchart illustrating another radio frequency signal transmission method based on a wireless audio system according to an embodiment of the present application. The flow chart of the radio frequency signal transmission method based on the wireless audio system depicted in fig. 2 is improved according to the flow chart of the radio frequency signal transmission method based on the wireless audio system depicted in fig. 1. The radio frequency signal transmission method based on the wireless audio system comprises the following steps:
s201, judging whether feedback information sent by a receiving device is detected, if so, executing a step S202; if not, ending the process; the feedback information at least includes the signal strength of the radio frequency signal received by the receiving device and the demodulation threshold of the receiving device.
In this embodiment, the feedback information corresponds to the radio frequency signal received by the receiving device.
In this embodiment, the wireless audio system includes a radio frequency signal output device (i.e., a device with a microphone) and a receiving device, and the two devices can implement a dual function of time-sharing transceiving. In normal communication, an output device (i.e., an rf signal output device) transmits an rf signal (i.e., an rf signal) to a receiving device, so that the receiving device receives and demodulates the rf signal. However, at a certain time period of communication, the receiving apparatus may switch to the transmitting function, and the output apparatus may switch to the receiving function, so that the receiving apparatus transmits the feedback information to the output apparatus.
In this embodiment, the determination method is a method for detecting feedback information.
In this embodiment, the receiving device may be various devices such as a sound device and a player, and this is not limited in this embodiment.
In this embodiment, the wireless audio system may include a plurality of output devices and a plurality of receiving devices, which is not limited in this embodiment.
In this embodiment, the feedback information includes feedback information corresponding to a radio frequency signal output by the immediately preceding output device, where the radio frequency signal is a previously output radio frequency signal and is different from a radio frequency signal described later.
In this embodiment, the feedback information corresponds to the rf signal received by the receiving device, and specifically, the feedback information includes signal information (such as signal strength, etc.) of the rf signal and personality information (such as an identifier of the receiving device and a demodulation threshold of the receiving device) of the receiving device.
S202, judging whether the signal intensity is larger than a demodulation threshold value, if so, executing a step S203 and a step S205; if not, steps S204 to S205 are executed.
In this embodiment, the signal strength greater than the demodulation threshold indicates that unnecessary power loss occurs in audio transmission and needs to be adjusted; the signal strength is not greater than the demodulation threshold, which indicates that the audio transmission may have transmission failure.
S203, adjusting the initial transmitting power down according to the difference absolute value of the signal intensity and the demodulation threshold value to obtain the target transmitting power.
In this embodiment, the down-regulation amplitude is slightly smaller than the absolute value of the difference.
For example, after obtaining the signal strength and the demodulation threshold, the output device, knowing that the signal strength is greater than the demodulation threshold, reduces its own transmit power to reduce the signal strength. The magnitude of the transmitter power reduction may be well below the absolute value of the difference between the signal strength and the demodulation threshold.
And S204, up-regulating the initial transmitting power to obtain the target transmitting power.
In this embodiment, the up call is used to improve the output quality of the radio frequency signal and ensure the listening quality.
And S205, outputting the radio frequency signal corresponding to the target transmitting power to a receiving device.
In this embodiment, the signal strength of the rf signal may be determined by the transmission power.
In this embodiment, the main executing body of the radio frequency signal transmission method based on the wireless audio system may be any device having an audio input function, including but not limited to various electronic devices such as a mobile phone and a tablet, a wireless headset (having a microphone function), a wireless microphone, and the like, and the embodiment is not limited in any way.
It can be seen that, with the implementation of the radio frequency signal transmission method based on the wireless audio system described in fig. 2, the transmission power of the radio frequency signal can be automatically adjusted in a self-adaptive manner through the current radio frequency signal transmission state, so that the output power of the radio frequency signal can be ensured to be the lowest, no influence is exerted on audio output, and the detection sensitivity of the receiving apparatus is not reduced; meanwhile, the lower output power can avoid generating interference on other signals in the wireless audio system, thereby improving the use quality of the wireless audio system.
Example 3
Referring to fig. 3, fig. 3 is a schematic structural diagram of a radio frequency signal output device based on a wireless audio system according to an embodiment of the present application. Wherein, this radio frequency signal output device based on wireless audio system includes:
a judging unit 310, configured to judge whether feedback information sent by a receiving apparatus is detected; the feedback information corresponds to the radio frequency signal received by the receiving device; wherein the radio frequency signal comprises audio information;
an adjusting unit 320, configured to adjust the initial transmit power according to the feedback information to obtain a target transmit power;
the output unit 330 is configured to output a radio frequency signal corresponding to the target transmission power to the receiving apparatus.
In this embodiment, the receiving device may be various devices such as a sound device and a player, and this is not limited in this embodiment.
In this embodiment, the wireless audio system may include a plurality of output devices and a plurality of receiving devices, which is not limited in this embodiment.
In this embodiment, the feedback information includes feedback information corresponding to a radio frequency signal output by the immediately preceding output device, where the radio frequency signal is a previously output radio frequency signal and is different from a radio frequency signal described later.
In this embodiment, the feedback information corresponds to the rf signal received by the receiving device, and specifically, the feedback information includes signal information (such as signal strength, etc.) of the rf signal and personality information (such as an identifier of the receiving device and a demodulation threshold of the receiving device) of the receiving device.
In this embodiment, for the explanation of the nouns or the addition of functions, reference may be made to embodiment 1 or embodiment 2, and details thereof are not repeated.
It can be seen that, with the radio frequency signal output device based on the wireless audio system described in fig. 3, the determination unit 310, the adjustment unit 320, and the output unit 330 included in the radio frequency signal output device can adjust the transmission power according to the radio frequency signal transmission condition of the current wireless audio system, so as to ensure that the radio frequency signal can perform signal output with the optimal transmission power, thereby ensuring the audio transmission quality of the wireless audio system.
Example 4
Referring to fig. 4, fig. 4 is a schematic structural diagram of another radio frequency signal output device based on a wireless audio system according to an embodiment of the present application. The structure of the radio frequency signal output device based on the wireless audio system illustrated in fig. 4 is improved according to the structure of the radio frequency signal output device based on the wireless audio system illustrated in fig. 3. The feedback information at least includes the signal strength of the radio frequency signal received by the receiving device and the demodulation threshold of the receiving device.
By implementing the embodiment, the feedback information fed back by the receiving device at least comprises the signal strength of the radio frequency signal and the demodulation threshold of the receiving device, and therefore, the lower limit content included in the obtained feedback information is limited, which can provide guarantee for information processing, thereby ensuring that the process of adjusting the initial transmission power by the method does not cause various problems due to lack of information, and the limitation of the content included in the feedback information can improve the pertinence to information acquisition, which is beneficial to improving the working accuracy of the system.
As an alternative embodiment, the adjusting unit 320 includes:
a judging subunit 321, configured to judge whether the signal strength is greater than a demodulation threshold;
and a down-regulation subunit 322, configured to down-regulate the initial transmit power to obtain a target transmit power when the signal strength is greater than the demodulation threshold.
In this embodiment, the adjusting unit 320 may interpret the feedback information through the determining subunit 321 and the down-regulating subunit 322, so as to determine whether the signal strength of the radio frequency signal transmitted before is enough to be demodulated, and adjust the transmission power of the radio frequency signal output device when the radio frequency signal can be demodulated, so as to reduce the signal strength of the radio frequency signal and keep the signal strength above the demodulation threshold, thereby ensuring the audio output effect, reducing the inter-signal interference, and improving the audio output quality of the wireless audio system.
As an optional implementation manner, the down-regulation subunit 322 is specifically configured to, when the signal strength is greater than the demodulation threshold, down-regulate the initial transmit power according to an absolute value of a difference between the signal strength and the demodulation threshold, to obtain the target transmit power.
As an optional implementation manner, the adjusting unit 320 further includes:
and the up-regulation subunit 323 is configured to up-regulate the initial transmit power to obtain the target transmit power when the signal strength is smaller than the demodulation threshold.
In this embodiment, for the explanation of the nouns or the addition of functions, reference may be made to embodiment 1 or embodiment 2, and details thereof are not repeated.
It can be seen that, with the radio frequency signal output device based on the wireless audio system described in fig. 4, the determination unit 310, the adjustment unit 320, and the output unit 330 included in the radio frequency signal output device can adjust the transmission power according to the radio frequency signal transmission condition of the current wireless audio system, so as to ensure that the radio frequency signal can perform signal output with the optimal transmission power, thereby ensuring the audio transmission quality of the wireless audio system.
An embodiment of the present application provides an electronic device, which includes a memory and a processor, where the memory is used to store a computer program, and the processor runs the computer program to enable the electronic device to execute a radio frequency signal transmission method based on a wireless audio system according to any one of embodiment 1 or embodiment 2 of the present application.
An embodiment of the present application provides a computer-readable storage medium, which stores computer program instructions, and when the computer program instructions are read and executed by a processor, the method for transmitting radio frequency signals based on a wireless audio system according to any one of embodiment 1 or embodiment 2 of the present application is executed.
In the embodiments provided in the present application, it should be understood that the disclosed apparatus and method can be implemented in other ways. The apparatus embodiments described above are merely illustrative, and for example, the flowchart and block diagrams in the figures illustrate the architecture, functionality, and operation of possible implementations of apparatus, methods and computer program products according to various embodiments of the present application. In this regard, each block in the flowchart or block diagrams may represent a module, segment, or portion of code, which comprises one or more executable instructions for implementing the specified logical function(s). It should also be noted that, in some alternative implementations, the functions noted in the block may occur out of the order noted in the figures. For example, two blocks shown in succession may, in fact, be executed substantially concurrently, or the blocks may sometimes be executed in the reverse order, depending upon the functionality involved. It will also be noted that each block of the block diagrams and/or flowchart illustration, and combinations of blocks in the block diagrams and/or flowchart illustration, can be implemented by special purpose hardware-based systems which perform the specified functions or acts, or combinations of special purpose hardware and computer instructions.
In addition, functional modules in the embodiments of the present application may be integrated together to form an independent part, or each module may exist separately, or two or more modules may be integrated to form an independent part.
The functions, if implemented in the form of software functional modules and sold or used as a stand-alone product, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present application or portions thereof that substantially contribute to the prior art may be embodied in the form of a software product stored in a storage medium and including instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method according to the embodiments of the present application. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, and other various media capable of storing program codes.
The above description is only an example of the present application and is not intended to limit the scope of the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application. It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.
The above description is only for the specific embodiments of the present application, but the scope of the present application is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present application, and shall be covered by the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
Claims (10)
1. A radio frequency signal transmission method based on a wireless audio system, the method comprising:
judging whether feedback information sent by a receiving device is detected; the feedback information corresponds to the radio frequency signal received by the receiving device; wherein the radio frequency signal comprises audio information;
adjusting the initial transmitting power by taking the feedback information as a basis to obtain target transmitting power;
and outputting a radio frequency signal corresponding to the target transmitting power to the receiving device.
2. The radio frequency signal transmission method based on wireless audio system as claimed in claim 1, wherein the feedback information at least includes signal strength of the radio frequency signal received by the receiving device and a demodulation threshold of the receiving device.
3. The method of claim 2, wherein the step of adjusting the initial transmit power based on the feedback information to obtain the target transmit power comprises:
judging whether the signal intensity is larger than the demodulation threshold value;
and when the signal intensity is greater than the demodulation threshold, the initial transmitting power is adjusted downwards to obtain the target transmitting power.
4. The method of claim 3, wherein the step of adjusting the initial transmitting power down to obtain the target transmitting power comprises:
and adjusting the initial transmitting power down according to the difference absolute value of the signal intensity and the demodulation threshold value to obtain target transmitting power.
5. The method of claim 3, further comprising:
and when the signal intensity is smaller than the demodulation threshold, the initial transmitting power is up-regulated to obtain the target transmitting power.
6. A radio frequency signal output apparatus based on a wireless audio system, the radio frequency signal output apparatus comprising:
the judging unit is used for judging whether feedback information sent by the receiving device is detected or not; the feedback information corresponds to the radio frequency signal received by the receiving device; wherein the radio frequency signal comprises audio information;
the adjusting unit is used for adjusting the initial transmitting power by taking the feedback information as a basis to obtain target transmitting power;
and the output unit is used for outputting the radio frequency signal corresponding to the target transmitting power to the receiving device.
7. The wireless audio system based radio frequency signal output device according to claim 6, wherein the feedback information at least includes a signal strength of the radio frequency signal received by the receiving device and a demodulation threshold of the receiving device.
8. The wireless audio system based radio frequency signal output device according to claim 7, wherein the adjusting unit comprises:
a judging subunit, configured to judge whether the signal strength is greater than the demodulation threshold;
and the down-regulation subunit is used for performing down-regulation on the initial transmitting power to obtain a target transmitting power when the signal intensity is greater than the demodulation threshold.
9. An electronic device, characterized in that the electronic device comprises a memory for storing a computer program and a processor for executing the computer program to cause the electronic device to perform the radio frequency signal transmission method based on a wireless audio system according to any one of claims 1 to 5.
10. A readable storage medium, wherein computer program instructions are stored in the readable storage medium, and when the computer program instructions are read and executed by a processor, the method for transmitting radio frequency signals based on a wireless audio system according to any one of claims 1 to 5 is performed.
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| CN111064479B (en) | 2021-07-23 |
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