CN111697982B - Adaptive noise processing method, device, system and storage medium - Google Patents
Adaptive noise processing method, device, system and storage medium Download PDFInfo
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- CN111697982B CN111697982B CN201910199266.6A CN201910199266A CN111697982B CN 111697982 B CN111697982 B CN 111697982B CN 201910199266 A CN201910199266 A CN 201910199266A CN 111697982 B CN111697982 B CN 111697982B
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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
- H04B1/06—Receivers
- H04B1/10—Means associated with receiver for limiting or suppressing noise or interference
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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
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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
- H04B1/06—Receivers
- H04B1/16—Circuits
- H04B1/18—Input circuits, e.g. for coupling to an antenna or a transmission line
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B17/00—Monitoring; Testing
- H04B17/30—Monitoring; Testing of propagation channels
- H04B17/309—Measuring or estimating channel quality parameters
- H04B17/318—Received signal strength
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04H—BROADCAST COMMUNICATION
- H04H40/00—Arrangements specially adapted for receiving broadcast information
- H04H40/18—Arrangements characterised by circuits or components specially adapted for receiving
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04H—BROADCAST COMMUNICATION
- H04H60/00—Arrangements for broadcast applications with a direct linking to broadcast information or broadcast space-time; Broadcast-related systems
- H04H60/09—Arrangements for device control with a direct linkage to broadcast information or to broadcast space-time; Arrangements for control of broadcast-related services
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04H—BROADCAST COMMUNICATION
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Abstract
The invention provides a method, a device, a system and a storage medium for processing self-adaptive noise, wherein the method comprises the following steps: the transmitting module detects whether audio data needs to be transmitted or not; when the audio data is detected to be required to be sent, the audio data is sent to a receiving module, and when the audio data is detected not to be required to be sent, silent data is sent to the receiving module; the receiving module detects whether the audio data or the silent data is received; receiving the audio data or the silence data when the audio data or the silence data is detected, and enhancing the receiving intensity when the audio data or the silence data is not detected. Therefore, according to the method, the device, the system and the storage medium of the invention, the FM receiving equipment can continuously keep receiving data, meanwhile, the FM receiving equipment is ensured not to start the enhancement function, and unnecessary noise is avoided.
Description
Technical Field
The present invention relates to the field of signal processing technologies, and in particular, to a noise processing method, apparatus, system, and storage medium.
Background
The FM (Frequency Modulation) receiving device on the market has the characteristic of self-adaptation, and the self-adaptation is to automatically and gradually enhance the data receiving capability when the FM radio does not receive audio data. This characteristic is to improve the received signal from the receiving end when the FM transmission device is transmitting insufficient signal; however, the problem is that after the FM transmitting device stops data transmission, the FM receiving device cannot search for a signal to start the automatic enhancement function, so that a noise-background signal of the FM transmitting device is amplified and noise is introduced. This situation is equivalent to that after the FM transmitting device transmits voice data normally to stop transmitting data, when the FM receiving device detects that the current channel is valid and has no data, the wireless receiving strength is enhanced (or the receiving sensitivity is improved or other methods are used).
Therefore, there is a problem in the prior art that the FM receiving apparatus amplifies the background noise to cause the occurrence of larger noise.
Disclosure of Invention
The present invention has been made in view of the above problems. The invention provides a self-adaptive noise processing method, a device and a system, which aim to solve the problem of larger noise caused by amplification of bottom noise by FM receiving equipment.
According to a first aspect of the present invention, there is provided an adaptive noise processing method, the method comprising:
the transmitting module detects whether audio data needs to be transmitted or not;
when the audio data is detected to be required to be sent, the audio data is sent to a receiving module, and when the audio data is detected not to be required to be sent, silent data is sent to the receiving module;
the receiving module detects whether the audio data or the silent data is received;
receiving the audio data or the silence data when the audio data or the silence data is detected, and enhancing the receiving intensity when the audio data or the silence data is not detected.
Illustratively, the silence data includes: and a high frequency or low frequency silence signal, wherein the high frequency includes frequencies greater than 20000HZ, and the low frequency includes frequencies less than 20 HZ.
Illustratively, the enhancing the reception strength includes: the sensitivity when receiving the signal is improved.
Illustratively, improving the sensitivity when receiving a signal includes: and adjusting the resonant frequency of the antenna according to the frequency of the audio data.
Illustratively, the method further comprises:
and the playing module plays the audio data according to the signal intensity when the receiving module receives the audio data.
Illustratively, the signal strength of the audio data is obtained according to the signal power when the audio data is received by the receiving module.
Illustratively, playing the audio data according to the signal strength indication of the audio data comprises:
playing the audio data at a first audio signal amplitude when the signal strength indication is less than or equal to a predetermined threshold;
when the signal strength indication is greater than a predetermined threshold, playing the audio data with a second audio signal amplitude, the second audio signal amplitude being greater than the first audio signal amplitude.
According to a second aspect of the present invention, there is provided an adaptive noise processing apparatus, the apparatus comprising a transmitting module and a receiving module, the transmitting module comprising:
the transmitting detection module is used for detecting whether audio data needs to be transmitted or not;
the signal transmitting module is connected with the transmitting detection module and used for transmitting the audio data when the audio data needing to be transmitted is detected; transmitting silent data when it is detected that audio data does not need to be transmitted;
the receiving module includes:
the receiving detection module is used for detecting whether audio data or silent data are received or not;
the signal receiving module is used for receiving the audio data or the silent data when the audio data or the silent data is detected; when no audio data or no sound data is detected, the reception intensity is enhanced.
According to a third aspect of the present invention, there is provided an adaptive noise processing system comprising a memory, a processor and a computer program stored on the memory and running on the processor, wherein the steps of the method of the first aspect are implemented when the computer program is executed by the processor.
According to a third aspect of the present invention, there is provided a storage medium having stored thereon a computer program which, when executed by a computer, carries out the steps of the method of the first aspect.
According to the adaptive noise processing method, the adaptive noise processing device, the adaptive noise processing system and the storage medium, when no effective signal is transmitted, the FM receiving equipment can continuously keep receiving data by continuously playing the appropriate high/low frequency silent signal, meanwhile, the FM receiving equipment is ensured not to start the enhancement function, and unnecessary noise is avoided.
Drawings
The above and other objects, features and advantages of the present invention will become more apparent by describing in more detail embodiments of the present invention with reference to the attached drawings. The accompanying drawings are included to provide a further understanding of the embodiments of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention. In the drawings, like reference numbers generally represent like parts or steps.
FIG. 1 is a schematic flow chart diagram of an adaptive noise processing method according to an embodiment of the present invention;
FIG. 2 is a schematic block diagram of an adaptive noise processing apparatus according to an embodiment of the present invention;
FIG. 3 is a schematic block diagram of an adaptive noise transmission module according to an embodiment of the present invention;
FIG. 4 is a schematic block diagram of an adaptive noise receiving module according to an embodiment of the present invention;
FIG. 5 is a schematic block diagram of an adaptive noise processing system according to an embodiment of the present invention;
fig. 6 is a schematic block diagram of an example of an adaptive noise processing apparatus according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, exemplary embodiments according to the present invention will be described in detail below with reference to the accompanying drawings. It is to be understood that the described embodiments are merely a subset of embodiments of the invention and not all embodiments of the invention, with the understanding that the invention is not limited to the example embodiments described herein. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the invention described herein without inventive step, shall fall within the scope of protection of the invention.
Because the sound waves are propagated and attenuated greatly in the air, the transmission distance is very close and limited, and radio waves are often adopted for the transmission of the sound waves. The radio wave refers to an electromagnetic wave in a radio frequency band which propagates in a free space (such as air and vacuum), because the change of current intensity in a conductor can generate the radio wave, the frequency of the radio wave is far higher than the frequency range audible by human ears, the propagating medium is an electromagnetic field, the transmission distance can be far, and therefore, a sound wave signal is transmitted by using the radio wave signal in a carrier wave mode. Such a Modulation method for changing the instantaneous Frequency of a carrier wave according to the change law of a desired transmission signal is called Frequency Modulation, which is simply called "Frequency Modulation" or "FM" (Frequency Modulation). In frequency modulation, the frequency of the carrier is not a constant, but varies within a certain range with the modulated signal, and the amplitude is a constant.
When the frequency modulation technology is used for transmitting sound wave signals, the transmitting signal equipment converts the sound signals into audio frequency electric signals, but the audio frequency signals are low in frequency and do not use remote transmission, so that the audio frequency electric signals are carried on high-frequency carrier current through a signal processing device such as a high-frequency oscillator, and finally the signals are transmitted to the air through an antenna. The signal receiving device receives radio waves in the air by using the receiving antenna, the detector demodulates and restores the high-amplified signals into audio signals, and the audio signals are amplified by the amplifier and output to the loudspeaker, so that the transmission of sound wave signals is completed.
In order to receive the audio signal more effectively, when the signal emitted by the signal emitting device is insufficient, the signal receiving device adopts a mode of automatically enhancing the data receiving capacity to better receive the signal. Taking an FM radio as an example, the FM radio comprises an antenna, an FM receiving device, a control device, a power amplification module and a loudspeaker; the FM receiving device has a self-adaptive function, and the amplification factor of the FM receiving device can be automatically adjusted along with the strength of a signal at a transmitting end, so that the signal received by the antenna is maintained in a proper receiving range after being subjected to self-adaptive amplification; then the power is amplified to proper power through a power amplification module, and the power is played through a loudspeaker.
However, when the signal transmitting device stops transmitting signals, the signal receiving device continues to automatically enhance the data receiving capability, so that the background noise signal of the signal transmitting device is amplified, and larger noise is introduced.
Therefore, an embodiment of the present invention provides an adaptive noise processing method to solve the above problem. Referring to fig. 1, fig. 1 shows a schematic flow chart of an adaptive noise processing method according to an embodiment of the present invention. The adaptive noise processing method 100 includes:
in step S110, the transmitting module detects whether audio data needs to be transmitted;
in step S120, when it is detected that audio data needs to be sent, the audio data is sent to a receiving module, and when it is detected that audio data does not need to be sent, silent data is sent to the receiving module;
in step S130, the receiving module detects whether the audio data or the silence data is received;
in step S140, when the audio data or the silence data is detected, the audio data or the silence data is received, and when the audio data or the silence data is not detected, the reception intensity is enhanced.
Whether the audio data are sent or not is detected, namely whether the transmitting module has the requirement of sending the audio data or not can be judged by detecting the transmitting state of the transmitting module, and whether the audio data are received by the data module in the transmitting module or whether the audio data are output by the port of the data module for outputting the audio data or not can also be judged by detecting whether the data module in the transmitting module receives the audio data or not.
When detecting that the transmitting module has a need of transmitting audio data, the signal transmitting device transmits the audio data signal to be transmitted through a transmitting device, such as a transmitting antenna, in the transmitting module.
And when the transmitting module is not detected to have the requirement of sending audio data, the transmitting module transmits a high-frequency or low-frequency silent data signal with proper frequency. Where the silent data is a sound signal that cannot be perceived by the human ear, the frequency of the sound signal that can be heard by the human ear is in the range of approximately 20Hz to 20,000Hz, so the frequency of the silent data may be greater than 20000Hz or less than 20 Hz.
Illustratively, the audio data or silence data comprises an FM signal.
The receiving module detects whether audio data or silent data is received or not, namely, whether audio data or silent data exists in the current frequency point or not is searched, so that whether receiving intensity is enhanced or not is judged to better receive signals or not.
When the receiving module detects the audio data or the silent data, the receiving module normally receives the audio data or the silent data, and plays the audio data or the silent data after corresponding signal processing. The receiving module detects silent data, and does not perform self-adaptive enhanced receiving, so that signals transmitted by the transmitting module cannot be amplified, the bottom noise of the transmitting module cannot be amplified, the introduction of larger noise is avoided, and the noise introduced by the self-adaptive receiving module during playing is eliminated; meanwhile, the silent data is not perceived by human ears, so that the auditory sensation of people is not adversely affected.
When the audio data or the silent data are not detected, the signal transmitting module does not transmit signals or the strength of the transmitted signals is not enough, and the transmitted signals of the transmitting module can be better detected and received by automatically enhancing the receiving strength.
Illustratively, the enhancing the reception strength includes: the sensitivity when receiving the signal is improved.
Illustratively, improving the sensitivity when receiving a signal includes: and adjusting the resonant frequency of the antenna according to the frequency of the audio data.
Wherein sensitivity may be defined as the minimum signal that the receiving module may receive that achieves a certain degree of signal-to-noise ratio (SNR). For fm reception, the antenna is a transducer that converts energy from electromagnetic waves to a voltage that can be used by electronic circuits, such as Low Noise Amplifiers (LNAs). The resonant frequency is a frequency point at which the antenna has the highest efficiency of converting electromagnetic waves into voltage. The use of an adjustment of the resonant frequency of the antenna provides maximum efficiency at each given frequency point, thereby maximizing the received signal strength over the entire frequency-modulated frequency band, and significantly improving the selectivity and sensitivity of the receiving module to receive signals.
Illustratively, the method 100 further comprises:
and the playing module plays the audio data according to the signal intensity when the receiving module receives the audio data.
Illustratively, playing the audio data according to the signal strength indication of the audio data comprises:
playing the audio data at a first audio signal amplitude when the signal strength indication is less than or equal to a predetermined threshold;
when the signal strength indication is greater than a predetermined threshold, playing the audio data with a second audio signal amplitude, the second audio signal amplitude being greater than the first audio signal amplitude.
When the receiving module receives the audio data, the output signal after demodulation and decoding is true, the signal-to-noise ratio is very low, and the user experience is deteriorated if the noise becomes large. And when the noise is larger, the playing volume can be reduced, namely the amplitude of the played audio data is reduced, and the influence of the noise can be correspondingly reduced. When the quality of the received audio data becomes high and the signal-to-noise ratio is high, the playing volume, i.e. the amplitude of the played audio data, can be increased.
Illustratively, the signal strength of the audio data is obtained according to the signal power when the audio data is received by the receiving module.
The Signal Strength of the audio data may be detected by a Received Signal Strength Indicator (RSSI), and the Received Signal Strength may be calculated from the Signal power when the audio data is Received, and does not provide any information about noise or Signal quality. For example, the received signal strength Rss is 10logP, where P is the received signal power.
The following describes an adaptive noise processing method according to an embodiment of the present invention with a specific example.
For a signal transmitting terminal, whether audio data is transmitted or not is detected by acquiring whether the audio data is required to be transmitted or not. When there is a need for audio data transmission, that is, it is detected to transmit audio data, when there is no need for audio data transmission, that is, it is detected to not transmit audio data.
Then, a corresponding signal is transmitted according to whether audio data is transmitted. When the requirement of audio data transmission exists, transmitting a transmission signal comprising the audio data; when there is no need for audio data transmission, a transmission signal including silent data is transmitted. Where the silent data is a sound signal that cannot be perceived by the human ear.
For a signal receiving end, whether the received signal includes audio data or silence data is judged. When the received signal comprises audio data or silent data, normally receiving the received signal, namely directly receiving the received signal without processing other received signals; at this moment, the signal receiving device detects silent data, and does not perform self-adaptive enhanced receiving, so that the background noise of the transmitted signal cannot be amplified, and the introduction of larger noise is avoided; meanwhile, the silent data is not perceived by human ears, so that the auditory sensation of people is not adversely affected. And when the received signal does not include audio data or silence data, the reception strength is automatically enhanced, for example, the reception sensitivity is increased, so that the transmitted signal can be received better.
And then, amplifying the received signal to proper playing power after power amplification, and outputting the signal to a loudspeaker for playing. The silent data is amplified by power, but the frequency is not changed and still cannot be perceived by human ears, so that the emitted silent data and the signal finally played by the loudspeaker cannot be perceived by the human ears, and the introduction of background noise amplification is avoided, and meanwhile, the poor auditory perception cannot be caused.
For the audio data, playing the audio data according to the signal strength when the receiving module receives the audio data specifically includes: playing the audio data at a first audio signal amplitude when the signal strength indication is less than or equal to a predetermined threshold; when the signal strength indication is greater than a predetermined threshold, playing the audio data with a second audio signal amplitude, the second audio signal amplitude being greater than the first audio signal amplitude. When the receiving module receives the audio data, if the signal-to-noise ratio is very low, the playing volume is reduced, namely the amplitude of the played audio data is reduced, and the influence of noise can be correspondingly reduced; if the received audio data quality becomes high and the signal-to-noise ratio is high, the volume of the playback, i.e., the amplitude of the played audio data, is increased or not changed.
Referring to fig. 2, fig. 2 shows a schematic block diagram of an adaptive noise processing apparatus according to an embodiment of the present invention. The adaptive noise processing apparatus 200 includes: a transmitting module 210 and a receiving module 220, wherein the transmitting module 210 comprises:
an emission detection module 211, configured to detect whether audio data needs to be sent;
a signal transmitting module 212, connected to the transmission detecting module, for transmitting the audio data when it is detected that the audio data needs to be transmitted; transmitting silent data when it is detected that audio data does not need to be transmitted;
the receiving module 220 includes:
a reception detection module 221, configured to detect whether audio data or silence data is received;
a signal receiving module 222, configured to receive the audio data or the silence data when the audio data or the silence data is detected; when no audio data or no sound data is detected, the reception intensity is enhanced.
It should be noted that the transmitting module 210 and the receiving module 220 may be disposed in different terminals, for example, the transmitting module 210 is disposed in a transmitting terminal, and the receiving module 220 is disposed in a receiving terminal; it is also possible to locate the same terminal so that the terminal has both transmitting and receiving functions, and the locations of the transmitting module 210 and the receiving module 220 are not limited herein.
In the following, the transmitting module and the receiving module are described separately by taking as an example that the transmitting module and the receiving module can be disposed in different terminals.
Referring to fig. 3, fig. 3 shows a schematic block diagram of an adaptive noise transmission module according to an embodiment of the present invention. The transmission module 300 includes:
an emission detection module 310, configured to detect whether to send audio data;
a signal transmitting module 320 for transmitting a transmission signal including the audio data when it is detected to transmit the audio data; when it is detected that no audio data is transmitted, a transmission signal including silent data is transmitted.
Illustratively, the transmitting module further comprises: a silence signal module 330 for generating a transmission signal including the silence data. Where the silent data is a sound signal that cannot be perceived by the human ear, the frequency of the sound signal that can be heard by the human ear is in the range of approximately 20Hz to 20,000Hz, so the frequency of the silent data may be greater than 20000Hz or less than 20 Hz.
Illustratively, the transmitting module further comprises: a data module 340, configured to obtain or play the audio data. In one embodiment, the data module 340 may be a player.
Illustratively, the emission detection module 310 detects the output of the data module 340 and determines whether to send audio data. When the data module 340 has an output signal, it is determined that the transmitting module 300 transmits audio data, and there is a need to transmit data; when the data module 340 does not output a signal, it is determined that the transmitting module 300 does not transmit audio data, and there is no need to transmit data.
In one embodiment, when the data module 340 is a player, the emission detection module 310 may further determine whether to send the audio data by detecting a playing status of the player. When the player is in a playing state, determining that the transmitting module 300 transmits audio data and the requirement of transmitting data exists; when the player is in the non-playing state, it is determined that the transmitting module 300 does not transmit audio data, and there is no need to transmit data.
Illustratively, the audio data or silence data comprises an FM signal.
Referring to fig. 4, fig. 4 is a schematic block diagram of an adaptive noise processing receiving module according to an embodiment of the present invention. The receiving module 400 includes:
a reception detection module 410 for detecting whether audio data or silence data is received;
a signal receiving module 420 for receiving the audio data or the silence data when the audio data or the silence data is detected; when the audio data or the silence data is not detected, the reception intensity is enhanced.
When the receiving detection module 410 detects the audio data or the silent data, the audio data or the silent data normally received by the signal receiving module 400 is amplified to a proper playing power by power amplification and then played, at this time, the signal receiving module detects the silent data and does not perform adaptive enhanced receiving, so that the signal transmitted by the signal transmitting device is not amplified, the bottom noise of the signal transmitting device is not amplified, the introduction of larger noise is avoided, and the noise introduced by the adaptive signal receiving module during the playing period is eliminated; meanwhile, the silent data is not perceived by human ears, so that the auditory sensation of people is not adversely affected.
When the audio data or the silent data is not detected, the signal transmitting device does not transmit signals or the strength of the transmitted signals is not enough, and the transmitted signals of the signal transmitting device can be better detected and received by automatically enhancing the receiving strength.
Illustratively, the audio data or silence data comprises an FM signal.
Illustratively, the signal receiving module 420 is further configured to: and adjusting the resonant frequency of the antenna according to the frequency of the audio data.
Illustratively, the receiving module 400 further includes:
the playing module 430 is configured to play the audio data according to the signal strength when the audio data is received by the receiving module.
Illustratively, the reception detection module 410 is further configured to: and obtaining the signal intensity of the audio data according to the signal power when the receiving module receives the audio data.
Illustratively, the playing module 430 is further configured to:
playing the audio data at a first audio signal amplitude when the signal strength indication is less than or equal to a predetermined threshold;
when the signal strength indication is greater than a predetermined threshold, playing the audio data with a second audio signal amplitude, the second audio signal amplitude being greater than the first audio signal amplitude.
Referring to fig. 5, fig. 5 is a schematic block diagram illustrating an adaptive noise processing system according to an embodiment of the present invention. The system 500 comprises a memory 510, a processor 520 and a computer program stored on the memory 510 and running on the processor, the processor 520 when executing the computer program implementing the steps of the adaptive noise processing method described above.
Furthermore, according to an embodiment of the present invention, there is also provided a storage medium on which program instructions are stored, which when executed by a computer or a processor are used for executing the corresponding steps of the adaptive noise processing method according to an embodiment of the present invention, and for implementing the corresponding modules in the adaptive noise processing apparatus according to an embodiment of the present invention. The storage medium can be any combination of one or more computer-readable storage media, e.g., one containing computer-readable program code for randomly generating sequences of action instructions and another containing computer-readable program code for adaptive noise processing.
In one embodiment, the computer program instructions may implement the functional blocks of the adaptive noise processing apparatus according to the embodiment of the present invention when executed by a computer and/or may perform the adaptive noise processing method according to the embodiment of the present invention.
According to the adaptive noise processing method, the adaptive noise processing device, the adaptive noise processing system and the storage medium, when no effective signal is transmitted, the FM receiving equipment can continuously keep receiving data by continuously playing appropriate high/low frequency silent signals, meanwhile, the FM receiving equipment is ensured not to start an enhancement function, and unnecessary noise is avoided.
A specific example of the above adaptive noise processing apparatus is explained below by fig. 6, and fig. 6 shows a schematic block diagram of an example of an adaptive noise processing apparatus according to an embodiment of the present invention.
As shown in fig. 6, the adaptive noise processing apparatus includes an FM transmission device and an FM reception device. The FM transmitting equipment comprises a player, a transmitting module, a receiving module and a transmitting antenna, wherein the transmitting module comprises a transmitting detection module (not shown), an FM transmitting module and a transmitting antenna; the FM receiving device comprises a receiving antenna and a receiving module, wherein the receiving module comprises an FM receiving module, a receiving detection module (not shown), a power amplifier module and a loudspeaker.
Firstly, acquiring whether the FM transmitting equipment has the requirement of audio data playing; detecting the output of the player through the emission detection module, wherein if the player has an output signal, the player has audio data output, namely the FM emission equipment has the requirement of audio data playing; if the player does not output the signal, the player does not output the audio data, namely the FM transmitting equipment does not have the requirement of audio data playing.
And then, transmitting corresponding signals according to the requirement of playing the audio data. When the FM transmitting equipment has the requirement of audio data playing, the FM transmitting module outputs a transmitting signal comprising the audio data to a transmitting antenna for transmitting; when the FM transmitting equipment has no requirement for audio data playing, the FM transmitting module outputs a transmitting signal comprising silent data to a transmitting antenna for transmitting. Where the silent data is a sound signal that cannot be perceived by the human ear.
Then, it is determined whether the received signal includes audio data or silence data. FM receiving equipment receives signals transmitted by the FM transmitting equipment through a receiving antenna, and a receiving detection module detects whether the received signals comprise audio data or silent data.
Then, when the received signal includes audio data or silence data, the FM receiving apparatus normally receives the received signal, that is, directly receives the received signal without performing processing of other received signals; at this time, the signal receiving device detects silent data, and does not perform self-adaptive enhanced reception, so that the signal transmitted by the signal transmitting device cannot be amplified, the bottom noise of the signal transmitting device cannot be amplified, and the introduction of larger noise is avoided; meanwhile, the silent data is not perceived by human ears, so that the auditory sensation of people is not adversely affected.
When the received signal does not include audio data or silence data, the FM receiving device automatically increases the receiving intensity, such as increasing the receiving sensitivity, to better receive the transmitted signal of the FM transmitting device.
And then, amplifying the received signal to proper playing power after power amplification, and outputting the signal to a loudspeaker for playing. The silent data is amplified by power, but the frequency is not changed and still cannot be perceived by human ears, so that the silent data transmitted by the FM transmitting equipment and the signal played through the loudspeaker cannot be perceived by the human ears, the introduction of background noise amplification of the FM transmitting equipment is avoided, and poor auditory perception cannot be caused.
According to the adaptive noise processing method, the adaptive noise processing device, the adaptive noise processing system and the storage medium, when no effective signal is transmitted, the FM receiving equipment can continuously keep receiving data by continuously playing the appropriate high/low frequency silent signal, meanwhile, the FM receiving equipment is ensured not to start the enhancement function, and unnecessary noise is avoided.
Although the illustrative embodiments have been described herein with reference to the accompanying drawings, it is to be understood that the foregoing illustrative embodiments are merely exemplary and are not intended to limit the scope of the invention thereto. Various changes and modifications may be effected therein by one of ordinary skill in the pertinent art without departing from the scope or spirit of the present invention. All such changes and modifications are intended to be included within the scope of the present invention as set forth in the appended claims.
It will be understood by those skilled in the art that all of the features disclosed in this specification (including any accompanying claims, abstract and drawings), and all of the processes or elements of any method or apparatus so disclosed, may be combined in any combination, except combinations where such features are mutually exclusive. Each feature disclosed in this specification (including any accompanying claims, abstract and drawings) may be replaced by alternative features serving the same, equivalent or similar purpose, unless expressly stated otherwise.
In the description provided herein, numerous specific details are set forth. It is understood, however, that embodiments of the invention may be practiced without these specific details. In some instances, well-known methods, structures and techniques have not been shown in detail in order not to obscure an understanding of this description.
Furthermore, those skilled in the art will appreciate that while some embodiments described herein include some features included in other embodiments, rather than other features, combinations of features of different embodiments are meant to be within the scope of the invention and form different embodiments. For example, in the claims, any of the claimed embodiments may be used in any combination.
The above description is only for the specific embodiment of the present invention or the description thereof, and the protection scope of the present invention 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 invention, and the changes or substitutions should be covered within the protection scope of the present invention. The protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (10)
1. An FM adaptive noise processing method, the method comprising:
the transmitting module detects whether audio data needs to be transmitted or not;
when the audio data is detected to be required to be sent, the audio data is sent to a receiving module, and when the audio data is detected not to be required to be sent, silent data is sent to the receiving module;
the receiving module detects whether the audio data or the silent data is received;
receiving the audio data or the silence data when the audio data or the silence data is detected, and enhancing the reception intensity when the audio data or the silence data is not detected.
2. The method of claim 1, wherein the silence data comprises: and a high frequency or low frequency silence signal, wherein the high frequency includes frequencies greater than 20000HZ, and the low frequency includes frequencies less than 20 HZ.
3. The method of claim 1, wherein the enhancing the reception strength comprises: the sensitivity when receiving the signal is improved.
4. The method of claim 3, wherein the increasing the sensitivity of the received signal comprises: and adjusting the resonant frequency of the antenna according to the frequency of the audio data.
5. The method of claim 1, further comprising:
and the playing module plays the audio data according to the signal intensity when the receiving module receives the audio data.
6. The method of claim 5, wherein the signal strength of the audio data is obtained according to a signal power of the audio data received by the receiving module.
7. The method of claim 5, wherein playing the audio data according to the signal strength indication of the audio data comprises:
playing the audio data at a first audio signal amplitude when the signal strength indication is less than or equal to a predetermined threshold;
when the signal strength indication is greater than a predetermined threshold, playing the audio data with a second audio signal amplitude, the second audio signal amplitude being greater than the first audio signal amplitude.
8. An FM adaptive noise processing apparatus, the apparatus comprising a transmitting module and a receiving module, the transmitting module comprising:
the transmitting detection module is used for detecting whether audio data needs to be transmitted or not;
the signal transmitting module is connected with the transmitting detection module and used for transmitting the audio data when the audio data needing to be transmitted is detected; transmitting silent data when it is detected that audio data does not need to be transmitted;
the receiving module includes:
the receiving detection module is used for detecting whether audio data or silent data are received or not;
the signal receiving module is used for receiving the audio data or the silent data when the audio data or the silent data is detected; when no audio data or no sound data is detected, the reception intensity is enhanced.
9. An FM adaptive noise processing system comprising a memory, a processor and a computer program stored on the memory and running on the processor, characterized in that the steps of the method of any one of claims 1 to 7 are implemented when the computer program is executed by the processor.
10. A storage medium having stored thereon a computer program which, when executed by a computer, carries out the steps of the method of any one of claims 1 to 7.
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| CN1290006A (en) * | 1999-09-22 | 2001-04-04 | 松下电器产业株式会社 | Audio Transmitting device and receiving device |
| CN107682360A (en) * | 2017-10-31 | 2018-02-09 | 维沃移动通信有限公司 | The processing method and mobile terminal of a kind of voice call |
| CN108885880A (en) * | 2016-03-31 | 2018-11-23 | 高通股份有限公司 | For disposing the silent system and method in audio stream |
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| US6850745B2 (en) * | 2002-01-23 | 2005-02-01 | Broadcom Corp | Method and apparatus for generating a self-correcting local oscillation |
| KR101585852B1 (en) * | 2011-09-29 | 2016-01-15 | 돌비 인터네셔널 에이비 | High quality detection in fm stereo radio signals |
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| CN1290006A (en) * | 1999-09-22 | 2001-04-04 | 松下电器产业株式会社 | Audio Transmitting device and receiving device |
| CN108885880A (en) * | 2016-03-31 | 2018-11-23 | 高通股份有限公司 | For disposing the silent system and method in audio stream |
| CN107682360A (en) * | 2017-10-31 | 2018-02-09 | 维沃移动通信有限公司 | The processing method and mobile terminal of a kind of voice call |
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