WO2018126553A1 - 一种收音机的信号确定方法及收音机 - Google Patents

一种收音机的信号确定方法及收音机 Download PDF

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Publication number
WO2018126553A1
WO2018126553A1 PCT/CN2017/080966 CN2017080966W WO2018126553A1 WO 2018126553 A1 WO2018126553 A1 WO 2018126553A1 CN 2017080966 W CN2017080966 W CN 2017080966W WO 2018126553 A1 WO2018126553 A1 WO 2018126553A1
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signal
radio
threshold
bandwidth
interference
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PCT/CN2017/080966
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English (en)
French (fr)
Inventor
邹剑锋
孔令华
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华为技术有限公司
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Priority to CN201780009086.6A priority Critical patent/CN108702165B/zh
Publication of WO2018126553A1 publication Critical patent/WO2018126553A1/zh

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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

Definitions

  • the present application relates to the field of radio technologies, and in particular, to a signal determining method for a radio and a radio.
  • the radio station can generate a radio signal by using frequency modulation (FM) modulation, that is, the radio station changes the frequency of the carrier signal according to the change of the amplitude of the audio signal (modulation signal) to be transmitted, and generates a radio signal.
  • FM frequency modulation
  • the frequency of the carrier signal is a legal frequency obtained by the radio authority for authorization.
  • the traditional radio motherboard has low noise floor, no interference source or less interference source, the traditional radio can easily judge whether the received signal is a radio signal or an interference signal through the strength of the signal.
  • the current radio has a higher noise floor and more interference sources.
  • the current radio still uses the above signal determination method, and it is easy to misidentify the interference signal as a radio signal in a strong signal region, and misidentify the radio signal as an interference signal in a weak signal region. , resulting in poor radio reception.
  • the embodiment of the present application provides a method for determining a signal of a radio and a radio for solving the problem that the radio has poor radio reception effect.
  • an embodiment of the present application provides a method for determining a signal of a radio, where the method includes: determining, by the radio, that the signal is a radio signal according to a comparison between a bandwidth of the received signal and a set bandwidth threshold, for example, when When the bandwidth is greater than a first bandwidth threshold (e.g., 90 kHz, 95 kHz, or 100 kHz), the radio determines that the signal is a radio signal.
  • a first bandwidth threshold e.g. 90 kHz, 95 kHz, or 100 kHz
  • the radio determines that the signal is an interference signal, wherein the second bandwidth threshold is less than the first Bandwidth threshold.
  • a second bandwidth threshold eg, 40 kHz, 45 kHz, or 55 kHz
  • the radio can determine that the received signal is an interference signal, such that the radio can discard the interference signal, and if the radio is in the search process, the radio will not receive the interference signal.
  • the frequency is used as the frequency used by the radio, which improves the radio reception.
  • the radio acquires a quality parameter of the signal, the quality parameter is used for Determining the quality of the signal; and determining that the signal is a radio signal based on a comparison of a quality parameter of the signal with a quality parameter threshold.
  • the radio can also determine that the signal is a radio signal by using a quality parameter of the received signal, so that the radio can use a good quality signal as a radio signal, thereby improving the radio to demodulate the signal.
  • the quality of the signal to be played can ultimately improve the user's listening experience.
  • the quality parameter involved in the above design includes at least one of the following: intensity, noise, and multipath interference strength;
  • the comparison result includes an intensity of the signal being greater than an intensity threshold
  • the comparison result includes that the noise of the signal is less than a noise threshold
  • the comparison result includes that the multipath interference strength of the signal is less than a multipath interference strength threshold.
  • the radio can determine the signal as a radio signal by the strength of the received signal, noise and multipath interference strength, so that the radio can use a good quality signal as a radio signal, thereby improving the radio solution. Adjusting the signal to obtain the quality of the signal to be played can ultimately improve the user's listening experience.
  • the radio may determine whether the received signal is a radio signal or an interference signal in the following ways:
  • Manner 1 If any one of the quality parameters of the received signal satisfies a condition of a station signal (for example, the strength of the signal is greater than an intensity threshold, the noise of the signal is less than a noise threshold, or the signal is The path interference strength is less than the multipath interference strength threshold), the radio determines that the signal is a station signal; otherwise, the radio determines that the signal is an interference signal.
  • a condition of a station signal for example, the strength of the signal is greater than an intensity threshold, the noise of the signal is less than a noise threshold, or the signal is The path interference strength is less than the multipath interference strength threshold
  • the radio can determine the type of the signal by the quality parameter if it is not determined by the bandwidth that the received signal is an interference signal or a radio signal.
  • parameters such as intensity, noise, and multipath interference strength can be used as secondary factors in the type of radio decision signal, with different parameters having different priorities.
  • the radio passes parameters of the first secondary factor (eg, the strength of the signal, noise, and more) At least one of the path interference strengths is determined whether the signal is an interference signal or a radio signal, and if the type of the signal cannot be determined, the parameter of the second secondary factor is continued (excluding the first secondary factor of the above parameters) At least one parameter other than the parameter determines whether the signal is an interference signal or a station signal until the type of the station signal is determined by the parameter of the last secondary factor.
  • the first secondary factor eg, the strength of the signal, noise, and more
  • At least one of the path interference strengths is determined whether the signal is an interference signal or a radio signal, and if the type of the signal cannot be determined, the parameter of the second secondary factor is continued (excluding the first secondary factor of the above parameters)
  • At least one parameter other than the parameter determines whether the signal is an interference signal or a station
  • the radio acquires the strength of the signal; and determines the type of the signal by the following steps:
  • the radio determines that the signal is a radio signal
  • the radio determines that the signal is interference when the intensity is less than a second intensity threshold (eg, 20 dBuV) a signal, wherein the second intensity threshold is less than the first intensity threshold.
  • a second intensity threshold eg, 20 dBuV
  • the radio can determine the type of the signal by the quality parameter if it is not determined by the bandwidth that the received signal is an interference signal or a radio signal.
  • the radio acquires an interference parameter of the signal, the interference parameter includes the following At least one of: noise, multipath interference strength; and determining the type of the signal by the following steps:
  • the radio determines that the signal is a radio signal
  • the radio determines that the signal is an interference signal when the interference parameter is greater than or equal to the interference parameter threshold.
  • the radio can not determine the type of the received signal by the bandwidth, and the type of the signal cannot be determined by the strength of the signal, the radio can also interfere with the signal by the above design.
  • the parameter determines the type of the signal.
  • the radio can use a good quality signal as a radio signal, so that the radio can demodulate the signal to obtain the quality of the signal to be played, and finally improve the user's listening experience.
  • the embodiment of the present application further provides a radio having a function of implementing the behavior of the radio in the example of the above method.
  • the functions may be implemented by hardware or by corresponding software implemented by hardware.
  • the hardware or software includes one or more modules corresponding to the functions described above.
  • the structure of the radio includes a receiving unit and a processing unit, and the units can perform corresponding functions in the foregoing method examples.
  • the units can perform corresponding functions in the foregoing method examples.
  • the structure of the radio includes a receiving unit and a processing unit, and the units can perform corresponding functions in the foregoing method examples.
  • the structure of the radio includes a receiver, a processor for receiving signals, and a memory configured to support the radio to perform corresponding functions in the above methods.
  • the memory is coupled to the processor, which stores program instructions (or applications) and data necessary for the radio.
  • the embodiment of the present application further provides a computer storage medium, where the software program stores a software program, where the software program can implement the first aspect or the first step when being read and executed by one or more processors Any of the aspects provided by the design.
  • FIG. 1 is a flowchart of a method for determining a signal of a radio according to an embodiment of the present application
  • FIG. 2 is a flowchart of an example of a method for determining a signal of a radio according to an embodiment of the present disclosure
  • FIG. 3 is a flowchart of another method for determining a signal of a radio according to an embodiment of the present disclosure
  • FIG. 4 is a structural diagram of a radio provided by an embodiment of the present application.
  • FIG. 5 is a structural diagram of another radio according to an embodiment of the present application.
  • the application provides a radio signal determination method and a radio to solve the problem that the radio has poor radio reception effect.
  • the method and the radio are based on the same inventive concept, and since the method and the radio solve the problem are similar in principle, the implementation of the radio and the method can be referred to each other, and the repetition is not repeated. .
  • the radio may determine that the signal is a radio signal according to a comparison between a bandwidth of the received signal and a set bandwidth threshold. Since the signal is in the process of transmission, although the strength of the signal may vary greatly, the bandwidth variation of the signal is small. In addition, the bandwidth difference between the radio signal and the interference signal is large. Therefore, compared with the prior art, in the present method, the radio uses the bandwidth of the signal as a main factor for judging the radio signal, and judges that the received signal is a radio signal, which can improve the radio. Radio effect.
  • the bandwidth of the signal involved in the embodiment of the present application is the width of the frequency of the signal in the frequency spectrum, that is, the difference between the highest frequency component and the lowest frequency component of the signal in the frequency spectrum.
  • the energy of the interfering signal is relatively small relative to the radio signal. Since the factors affecting the signal energy include the strength of the signal and the bandwidth of the signal, that is, the greater the strength of the signal when the signal energy is fixed, the smaller the bandwidth of the signal. In the scenario where the radio can receive the interference signal, it is obvious that the strength of the interference signal is large, so the bandwidth of the interference signal is small, usually below several tens of kHz.
  • the FM modulation broadcast frequency interval can be 100 kilohertz (kHz), 200 kHz, 300 kHz, or 400 kHz as specified in the international standard, the bandwidth of the station signal generated and transmitted by the station is large relative to the interference signal.
  • the first bandwidth threshold involved in the embodiment of the present application is to directly determine that the signal received by the radio is a reference value of the radio signal.
  • the value of the first bandwidth threshold may be specifically set according to a first bandwidth value range of a radio signal transmitted by a radio station in a normal situation and a second bandwidth value range of a general interference signal, for example, The first bandwidth threshold may be less than or equal to a minimum value of the first bandwidth value range, or may be greater than a maximum value of the second bandwidth value range.
  • the first bandwidth threshold may also be specifically configured according to a specific application scenario. For another example, according to the bandwidth description of the radio signal and the interference signal, the first bandwidth threshold may be 90 kHz, 95 kHz, or 100 kHz. It should be noted that the value of the first bandwidth threshold is not specifically limited in this embodiment of the present application.
  • the second bandwidth threshold involved in the embodiment of the present application is to directly determine that the signal received by the radio is a reference value of the interference signal.
  • the second bandwidth threshold is smaller than the first bandwidth threshold.
  • the value of the first bandwidth threshold may be specifically set according to the second bandwidth value range, for example, the second bandwidth threshold may be equal to or smaller than the value of the first bandwidth threshold.
  • the first bandwidth threshold may also be specifically configured according to a specific application scenario.
  • the second bandwidth threshold may be 40 kHz, 45 kHz, or 50 kHz. It should be noted that the value of the second bandwidth threshold is not specifically limited in this embodiment of the present application.
  • the quality parameter of the signal involved in the embodiment of the present application is used to indicate the quality of the signal. Therefore, the value of the quality of the signal may reflect the quality of the signal to be played obtained by the radio demodulating the signal, which affects The radio The user's listening experience when playing the signal to be played.
  • the quality parameter of the signal may include at least one of the following: an intensity, an interference parameter, where the interference parameter includes a parameter such as a noise and/or a multipath interference strength, which is not limited in this application.
  • the quality parameter of the signal is a main factor for determining the radio signal according to the bandwidth of the signal, and if the signal is not determined to be a radio signal, the factor of the radio signal is further determined, that is, The factor.
  • the secondary factor may be one of the foregoing multiple parameters, or multiple parameters.
  • different priorities may be set for different parameters.
  • intensity is used as the first secondary factor
  • noise is used as the second secondary factor
  • multipath interference strength is used as the third secondary factor; in this case, the radio cannot determine the received value in the bandwidth of the passing signal.
  • the signal is a signal, it continues to determine by the strength of the signal. If it is still impossible to determine which signal the received signal is, it is further determined by noise, and so on, until it is determined whether the received signal is an interference signal or a radio signal.
  • the intensity is taken as the first secondary factor
  • the interference parameter noise and/or multipath interference strength
  • the radio cannot determine the received signal by the bandwidth of the signal.
  • it continues to judge by the strength of the signal. If it is still impossible to determine which signal the received signal is, it is further determined by the interference parameter to determine whether the received signal is an interference signal or a radio signal.
  • the quality parameter threshold involved in the embodiment of the present application is that the radio determines that the received signal is a reference value of the interference signal/station signal. Since the quality of the interference signal is generally poor, and even if the radio demodulates the signal with poor quality, the quality of the obtained signal to be played is poor, thereby reducing the user's listening experience. Therefore, the radio can determine the higher quality signal as the station signal by comparing the quality parameter of the received signal with the quality parameter threshold.
  • the quality parameter of the signal includes at least one of the following parameters: intensity, noise, multipath interference strength, etc., correspondingly, each quality parameter has a corresponding quality parameter threshold, therefore,
  • the quality parameter threshold includes at least one of the following: an intensity threshold, a noise threshold, a multipath interference strength threshold, and the like, which is not limited in this application.
  • the strength of the signal involved in the embodiment of the present application may be expressed by the amplitude of the signal, and the unit is decibel (dBuV).
  • the noise involved in the embodiment of the present application may be Ultrasonic Noise (USN).
  • USN Ultrasonic Noise
  • WAM Wideband Amplitude Modulation
  • FIG. 1 shows a signal determining method of a radio provided by an embodiment of the present application, which is applicable to various FM modulated radios, for example, ordinary home radios, car radios, and the like.
  • the radio can be used in the search process to determine that the signal received at a certain frequency is a radio signal, and then the radio can be locked.
  • the frequency and the frequency is the frequency used by the station. Referring to FIG. 1, the process of the method includes:
  • the first bandwidth threshold may be set to 100 kHz.
  • the first bandwidth threshold may also be set to 90 kHz or 95 kHz, etc., which is not limited in this embodiment of the present application.
  • the radio may also consider some secondary factors in determining that the bandwidth is greater than the first bandwidth threshold, ie, The quality parameters of the signal, such as strength.
  • the radio can determine that the received signal is a radio signal, and can improve the radio receiving effect of the radio.
  • the method further includes the following steps:
  • the second bandwidth threshold is smaller than the first bandwidth threshold.
  • the bandwidth of the interference signal is small, usually several tens of kHz. Therefore, optionally, the second bandwidth threshold may be set to 50 kHz. Certainly, the second bandwidth threshold may also be set to 40 kHz, 45 kHz, or 55 kHz, etc., which is not limited in this embodiment of the present application.
  • the second bandwidth threshold is 50 kHz as an example for description.
  • the radio can determine that the received signal is an interference signal, so that the radio can discard the interference signal, and if the radio is in the process of searching, the radio will not receive the interference signal.
  • the frequency is used as the frequency used by the radio, which improves the radio reception.
  • the method provided by the embodiment of the present application further includes: when the bandwidth is greater than or equal to the second bandwidth threshold and less than or equal to the first bandwidth threshold, the method for determining, by the radio, the radio signal may be See S104a below.
  • S104a when the bandwidth is greater than or equal to the second bandwidth threshold and less than or equal to the first bandwidth threshold, the radio acquires a quality parameter of the signal, and according to the quality parameter and the quality parameter of the signal A result of the comparison of the thresholds determines that the signal is a station signal, the quality parameter being used to indicate the quality of the signal.
  • the radio can also determine that the signal is electric by the quality parameter of the received signal.
  • the station signal in this way, the radio can use a good quality signal as a radio signal, so that the radio can demodulate the signal to obtain the quality of the signal to be played, and finally improve the user's listening experience.
  • the quality parameter may include at least one of the following: strength, noise, multipath interference strength, and the like.
  • the included parameters in the quality parameter are not prioritized.
  • the radio may directly determine, according to the comparison result, whether the signal is a radio signal, for example, the following scenario:
  • the quality parameter includes only the intensity.
  • the radio determines that the signal is a radio signal; when the comparison result is that the strength of the signal is less than Or equal to the intensity threshold, the radio determines that the signal is an interference signal.
  • the intensity threshold may be set according to the value of the strength of the radio signal that does not affect the user's listening experience.
  • the strength threshold may be set to 35dBuV, 40dBuV, etc., which is not limited in this application.
  • the quality parameter includes only noise (for example, USN).
  • the radio determines that the signal is a radio signal; when the comparison result is the When the noise of the signal is greater than or equal to the noise threshold, the radio determines that the signal is an interference signal.
  • the noise threshold may be set according to the value of the noise of the station signal that does not affect the user's listening experience, for example, the noise threshold may be 15%.
  • the quality parameter includes only multipath interference strength (eg, WAM).
  • WAM multipath interference strength
  • the multipath interference strength threshold may be set according to the value of the multipath interference strength of the radio signal that does not affect the user's listening experience.
  • the multipath interference strength threshold may be 15%.
  • the radio may determine whether the signal is a radio signal or an interference signal according to a comparison result of multiple quality parameters, for example, the following scenario:
  • Scene 4 The quality parameters include strength and noise.
  • the quality parameters include strength and multipath interference strength.
  • the quality parameters include noise and multipath interference strength.
  • Scenario 7 The quality parameters include strength, noise, and multipath interference strength.
  • the radio may determine whether the received signal is a radio signal or an interference signal in the following manners:
  • the radio determines that the signal is a radio signal; otherwise The radio determines that the signal is an interference signal.
  • the radio determines that the signal is a radio signal; otherwise Place The radio determines that the signal is an interfering signal.
  • the radio can determine the type of the signal by the quality parameter if it is not determined by the bandwidth that the received signal is an interference signal or a radio signal.
  • the radio determines the type of the signal by the following steps:
  • the first intensity threshold and the second intensity threshold may be set according to a specific application scenario.
  • the first intensity threshold is set to 50dBuV and the second intensity threshold is set to 20dBuV.
  • the specific values of the first intensity threshold and the second intensity threshold in the embodiment of the present application are not limited, and the subsequent embodiments are described by taking the above values as examples.
  • the radio determines that the signal is a radio signal.
  • the interference parameter threshold may be specifically set according to a specific application scenario. For example, when the interference parameter includes noise, and the noise is USN, a threshold value set for the USN in the interference parameter threshold is 15%; when the interference parameter includes multipath interference strength, and the multipath When the interference intensity is WAM, the threshold value set for the multipath interference strength in the interference parameter threshold is 15%.
  • the specific value of the interference parameter threshold in the embodiment of the present application is not limited, and the subsequent embodiments are described by taking the above-mentioned values as examples.
  • the radio can determine whether the received signal is an interference signal or a radio signal through the bandwidth, and the radio can sequentially determine the signal by using the strength and interference parameters of the signal. type. In this way, the radio can use a good quality signal as a radio signal, so that the radio can demodulate the signal to obtain the quality of the signal to be played, and finally improve the user's listening experience.
  • the radio acquires the intensity L of the signal when 50 kHz ⁇ BW ⁇ 100 kHz.
  • S207 The radio acquires the USN and WAM of the signal when 20dBuV ⁇ L ⁇ 50dBuV.
  • the radio can determine the type of the received signal according to the bandwidth of the signal, and improve the sound collection effect of the radio. Further, in the case where the type of the signal cannot be determined by the bandwidth, the type of the signal can be determined by parameters such as the strength of the signal, USN and WAM. In this way, the radio can use a good quality signal as a radio signal, so that the radio can demodulate the signal to obtain the quality of the signal to be played, and finally improve the user's listening experience. Since the bandwidth of the signal in the method is the main factor for judging the radio signal relative to the prior art, the method can improve the radio reception effect of the radio.
  • the embodiment of the present application further provides an example of a signal determining method of another radio.
  • step S302 and subsequent steps S3021 and S3022 other steps are as shown in FIG. 2 above.
  • the steps other than step S202 in the illustrated example are the same, and therefore, can be referred to each other, and will not be described again here.
  • the steps different from the example shown in Figure 2 are:
  • S302 The radio acquires the strength L of the signal when BW>100 kHz.
  • the radio can satisfy the bandwidth condition of the radio signal, but the lower strength signal is determined as the interference signal, so that the radio can use the bandwidth condition of the radio signal and the good quality signal as the radio signal. Therefore, it is possible to further improve the quality of the signal that the radio demodulates the signal to be played, and the listening experience of the user can be improved.
  • the embodiment of the present application further provides a radio, which can implement a signal determining method of the radio in the embodiment shown in FIG. 1 to FIG. 3.
  • the radio 400 includes : receiving unit 401, processing unit 402, wherein
  • a receiving unit 401 configured to receive a signal
  • the processing unit 402 is configured to determine a bandwidth of the signal; and when the bandwidth is greater than the first bandwidth threshold, determine that the signal is a radio signal.
  • processing unit 402 is further configured to:
  • the signal is an interference signal when the bandwidth is less than a second bandwidth threshold, wherein the second bandwidth threshold The value is less than the first bandwidth threshold.
  • Obtaining a quality parameter of the signal where the quality parameter is used to indicate a quality of the signal, when the bandwidth is greater than or equal to the second bandwidth threshold and less than or equal to the first bandwidth threshold;
  • the signal is determined to be a station signal based on a comparison of the quality parameter of the signal with a quality parameter threshold.
  • the comparison result includes that the noise of the signal is less than a noise threshold
  • the comparison result includes that the multipath interference strength of the signal is less than a multipath interference strength threshold.
  • processing unit 402 is further configured to:
  • the intensity is less than the second intensity threshold, determining that the signal is an interference signal, wherein the second intensity threshold is less than the first intensity threshold.
  • an interference parameter of the signal when the intensity is greater than or equal to the second intensity threshold and less than or equal to the first intensity threshold where the interference parameter includes at least one of the following: noise, multipath interference strength ;
  • the signal is determined to be an interference signal.
  • the embodiment of the present application provides a radio that can determine that the signal is a radio signal according to a comparison between a bandwidth of the received signal and a set bandwidth threshold. Since the signal is in the process of transmission, although the strength of the signal may vary greatly, the bandwidth variation of the signal is small. In addition, the bandwidth difference between the radio signal and the interference signal is large. Therefore, the radio can use the bandwidth of the signal as a main factor for judging the radio signal, and judge that the received signal is a radio signal, which can improve the radio reception effect of the radio.
  • the division of the unit in the embodiment of the present application is schematic, and is only a logical function division. In actual implementation, there may be another division manner.
  • the functional units in the embodiments of the present application may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.
  • the above integrated unit can be implemented in the form of hardware or in the form of a software functional unit.
  • the embodiment of the present application further provides a computer storage medium, where the software program stores a software program, and when the software program is read and executed by one or more processors, the radio provided by the embodiment may be implemented.
  • Signal determination method The computer storage medium may include: a U disk, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk, and the like, which can store program codes. medium.
  • the embodiment of the present application further provides a radio for implementing the signal determination method of the radio as shown in FIG. 1 to FIG. 3, having the function of the radio 400 as shown in FIG.
  • the radio includes a receiver 501, a processor 502, and a memory 503.
  • the receiver 501, the processor 502, and the memory 503 are connected to each other.
  • the receiver 501 is configured to receive a signal.
  • the receiver 501 includes a receiving antenna.
  • the processor 502 is configured to determine that the signal is a radio signal when the bandwidth is greater than a first bandwidth threshold.
  • processor 502 is further configured to:
  • Obtaining a quality parameter of the signal where the quality parameter is used to indicate a quality of the signal, when the bandwidth is greater than or equal to the second bandwidth threshold and less than or equal to the first bandwidth threshold;
  • the signal is determined to be a station signal based on a comparison of the quality parameter of the signal with a quality parameter threshold.
  • the quality parameter includes at least one of the following: strength, noise, and multipath interference strength;
  • the comparison result includes the intensity of the signal being greater than an intensity threshold
  • the comparison result includes that the noise of the signal is less than a noise threshold
  • the comparison result includes that the multipath interference strength of the signal is less than a multipath interference strength threshold.
  • processor 502 is further configured to:
  • the intensity is less than the second intensity threshold, determining that the signal is an interference signal, wherein the second intensity threshold is less than the first intensity threshold.
  • processor 502 is further configured to:
  • an interference parameter of the signal when the intensity is greater than or equal to the second intensity threshold and less than or equal to the first intensity threshold where the interference parameter includes at least one of the following: noise, multipath interference strength ;
  • the radio 500 further includes traditional signal processing devices, a headphone interface, and a speaker for implementing a radio playing function, which is not described herein.
  • the embodiment of the present application provides a method for determining a signal of a radio and a radio.
  • the radio can determine that the signal is a radio signal according to a comparison between a bandwidth of the received signal and a set bandwidth threshold. . Since the signal is in the process of transmission, although the strength of the signal may vary greatly, the bandwidth variation of the signal is small. Another In addition, the bandwidth difference between the radio signal and the interfering signal is large. Therefore, in the method provided by the embodiment of the present application, the radio uses the bandwidth of the signal as a main factor for judging the radio signal, and determines that the received signal is a radio signal. Can improve the radio reception of the radio.
  • embodiments of the present application can be provided as a method, system, or computer program product.
  • the present application can take the form of an entirely hardware embodiment, an entirely software embodiment, or an embodiment in combination of software and hardware.
  • the application can take the form of a computer program product embodied on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) including computer usable program code.
  • the computer program instructions can also be stored in a computer readable memory that can direct a computer or other programmable data processing device to operate in a particular manner, such that the instructions stored in the computer readable memory produce an article of manufacture comprising the instruction device.
  • the apparatus implements the functions specified in one or more blocks of a flow or a flow and/or block diagram of the flowchart.
  • These computer program instructions can also be loaded onto a computer or other programmable data processing device such that a series of operational steps are performed on a computer or other programmable device to produce computer-implemented processing for execution on a computer or other programmable device.
  • the instructions provide steps for implementing the functions specified in one or more of the flow or in a block or blocks of a flow diagram.

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Abstract

一种收音机的信号确定方法及收音机，用以解决收音机的收音效果较差的问题。在该方法中，收音机可以根据接收的信号的带宽与设定的带宽阈值的比较，确定所述信号为电台信号。通过该方法，所述收音机可以判断接收的信号为电台信号，可以提高所述收音机的收音效果。

Description

一种收音机的信号确定方法及收音机
本申请要求于2017年01月03日提交中国专利局、申请号为201710001671.3、发明名称为“车载FM选台的方法和设备”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。
技术领域
本申请涉及收音机技术领域，尤其涉及一种收音机的信号确定方法及收音机。
背景技术
目前，电台可以采用调频(frequency modulation，FM)调制生成电台信号，即电台根据待发送的音频信号(调制信号)的幅值的变化，而改变载波信号的频率，生成电台信号。其中，所述载波信号的频率为获得无线电管理机构批准授权的合法的频率。
由于信号在传输过程受到干扰后，会严重影响信号的幅值，其中，幅值又可以称为强度(level)。因此，收音机在搜台过程中，通常会根据接收到的信号的强度，排除干扰信号，识别电台信号。
由于传统的收音机主板底噪低、无干扰源或干扰源较少，传统的收音机通过信号的强度可以较易地判断接收的信号是电台信号还是干扰信号。然而，随着收音机产品的复杂度、功能集成度越来越高，目前的收音机的主板底噪变高、干扰源也变多。在硬件环境变差的情况下，目前的收音机依然采用上述信号确定方法，容易在强信号区域内，将干扰信号误识别为电台信号，以及在弱信号区域内，将电台信号误识别为干扰信号，导致收音机的收音效果较差。
发明内容
本申请实施例提供了一种收音机的信号确定方法及收音机，用以解决收音机的收音效果较差的问题。
第一方面，本申请实施例提供了一种收音机的信号确定方法，该方法包括：收音机可以根据接收的信号的带宽与设定的带宽阈值的比较，确定所述信号为电台信号，例如，当所述带宽大于第一带宽阈值(如90kHz、95kHz或100kHz)时，所述收音机确定所述信号为电台信号。
通过上述方法，所述收音机可以将信号的带宽作为判断电台信号的主要因素，判断接收的信号为电台信号，可以提高所述收音机的收音效果。
在一个可能的设计中，当所述带宽小于第二带宽阈值(如40kHz、45kHz或55kHz)时，所述收音机确定所述信号为干扰信号，其中，所述第二带宽阈值小于所述第一带宽阈值。
通过上述设计，所述收音机可以确定接收的信号为干扰信号，这样，所述收音机可以对所述干扰信号进行丢弃，若所述收音机在搜台过程中，所述收音机不将接收该干扰信号的频率作为电台使用的频率，从而提高了收音机的收音效果。
在一个可能的设计中，当所述带宽大于或等于所述第二带宽阈值、且小于或等于所述第一带宽阈值时，所述收音机获取所述信号的质量参数，所述质量参数用于指示所述信号的质量；并根据所述信号的质量参数与质量参数阈值的比较结果，确定所述信号为电台信号。
通过上述设计，所述收音机还可以通过接收的信号的质量参数，确定所述信号为电台信号，这样，所述收音机可以将质量好的信号作为电台信号，从而可以提高收音机解调所述信号得到待播放的信号的质量，最终可以提高用户的收听体验。
在一个可能的设计中，上述设计中涉及的所述质量参数包括以下至少一项：强度、噪声和多路径干扰强度；其中，
当所述质量参数包括强度时，所述比较结果包括所述信号的强度大于强度阈值；
当所述质量参数包括噪声(例如USN)时，所述比较结果包括所述信号的噪声小于噪声阈值；
当所述质量参数包括多路径干扰强度(例如WAM)时，所述比较结果包括所述信号的多路径干扰强度小于多路径干扰强度阈值。
通过上述设计，所述收音机可以通过接收的信号的强度、噪声和多路径干扰强度，确定所述信号为电台信号，这样，所述收音机可以将质量好的信号作为电台信号，从而可以提高收音机解调所述信号得到待播放的信号的质量，最终可以提高用户的收听体验。
在一个可能的设计中，当所述质量参数中包括多种质量参数时，所述收音机可以通过以下几种方式，确定接收的所述信号是电台信号还是干扰信号：
方式一：若接收的所述信号的所述质量参数中任一个参数满足电台信号的条件(例如，所述信号的强度大于强度阈值、所述信号的噪声小于噪声阈值，或所述信号的多路径干扰强度小于多路径干扰强度阈值)，则所述收音机确定所述信号为电台信号；否则，所述收音机确定所述信号为干扰信号。
方式二：若接收的所述信号的所述质量参数中每一个参数均满足相应的电台信号的条件，则所述收音机确定所述信号为电台信号；否则，所述收音机确定所述信号为干扰信号。
通过上述设计，所述收音机可以在通过带宽无法确定接收的所述信号是干扰信号还是电台信号的情况下，通过所述质量参数确定所述信号的类型。
在一个可能的设计中，强度，噪声和多路径干扰强度等参数可以作为收音机判定信号种类的次要因素，不同的参数的优先级不同。例如，当所述带宽大于或等于所述第二带宽阈值、且小于或等于所述第一带宽阈值时，所述收音机通过第一次要因素的参数(例如，上述信号的强度，噪声和多路径干扰强度中的至少一种参数)判定所述信号是干扰信号还是电台信号，若无法确定所述信号的类型，则继续通过第二次要因素的参数(上述参数中除第一次要因素的参数以外的至少一种参数)判定所述信号是干扰信号还是电台信号，直至通过最后一个次要因素的参数，判定出所述电台信号的类型。
在一个可能的设计中，在强度为第一次要因素，干扰参数为第二次要因素的场景下，当所述带宽大于或等于所述第二带宽阈值、且小于或等于所述第一带宽阈值时，所述收音机获取所述信号的强度；并通过以下步骤，确定所述信号的类型：
当所述强度大于第一强度阈值(例如50dBuV)时，所述收音机确定所述信号为电台信号；
当所述强度小于第二强度阈值(例如20dBuV)时，所述收音机确定所述信号为干扰 信号，其中，所述第二强度阈值小于所述第一强度阈值。
通过以上方法，所述收音机可以在通过带宽无法确定接收的所述信号是干扰信号还是电台信号的情况下，通过所述质量参数确定所述信号的类型。
在一个可能的设计中，当所述强度大于或等于所述第二强度阈值、且小于或等于所述第一强度阈值时，所述收音机获取所述信号的干扰参数，所述干扰参数包括以下至少一项：噪声、多路径干扰强度；并通过以下步骤，确定所述信号的类型：
当所述干扰参数小于干扰参数阈值时，所述收音机确定所述信号为电台信号；
当所述干扰参数大于或等于所述干扰参数阈值时，所述收音机确定所述信号为干扰信号。
在所述收音机可以在通过带宽无法确定接收的所述信号的类型，而且通过信号的强度也无法确定所述信号的类型的情况下，通过上述设计，所述收音机还可以通过所述信号的干扰参数判定所述信号的类型。这样，所述收音机可以将质量好的信号作为电台信号，从而可以提高收音机解调所述信号得到待播放的信号的质量，最终可以提高用户的收听体验。
第二方面，本申请实施例还提供了一种收音机，该收音机具有实现上述方法实例中收音机行为的功能。所述功能可以通过硬件实现，也可以通过硬件执行相应的软件实现。所述硬件或软件包括一个或多个与上述功能相对应的模块。
在一种可能的设计中，所述收音机的结构中包括接收单元和处理单元，这些单元可以执行上述方法示例中的相应功能，具体参见方法示例中的详细描述，此处不做赘述。
在一种可能的设计中，所述收音机的结构中包括接收器、处理器以及存储器，所述接收器用于接收信号，所述处理器被配置为支持所述收音机执行上述方法中相应的功能。所述存储器与所述处理器耦合，其保存所述收音机必要的程序指令(或应用程序)和数据。
第三方面，本申请实施例中还提供一种计算机存储介质，该存储介质中存储软件程序，该软件程序在被一个或多个处理器读取并执行时可实现第一方面或上述第一方面的任意一种设计提供的方法。
本申请实施例中，收音机可以根据接收的信号的带宽与设定的带宽阈值的比较，确定所述信号为电台信号。由于信号在传输过程中，尽管信号的强度有可能变化较大，但是信号的带宽变化较小。另外，电台信号和干扰信号的带宽差别较大，因此，相对于现有技术，在本申请实施例提供的方法中收音机将信号的带宽作为判断电台信号的主要因素，判断接收的信号为电台信号，可以提高收音机的收音效果。
附图说明
图1为本申请实施例提供的一种收音机的信号确定方法流程图；
图2为本申请实施例提供的一种收音机的信号确定方法实例流程图；
图3为本申请实施例提供的另一种收音机的信号确定方法实例流程图；
图4为本申请实施例提供的一种收音机的结构图；
图5为本申请实施例提供的另一种收音机的结构图。
具体实施方式
本申请提供了一种收音机的信号确定方法及收音机，用以解决收音机的收音效果较差的问题。其中所述方法和所述收音机是基于同一发明构思的，由于所述方法和所述收音机解决问题的原理相似，因此，所述收音机与所述方法的实施可以相互参见，重复之处不再赘述。
在本申请实施例提供的方法中，收音机可以根据接收的信号的带宽与设定的带宽阈值的比较，确定所述信号为电台信号。由于信号在传输过程中，尽管信号的强度有可能变化较大，但是信号的带宽变化较小。另外，电台信号和干扰信号的带宽差别较大，因此，相对于现有技术，在本方法中收音机将信号的带宽作为判断电台信号的主要因素，判断接收的信号为电台信号，可以提高收音机的收音效果。
以下，对本申请中的部分用语进行解释说明，以便与本领域技术人员理解。
1、本申请实施例涉及的信号的带宽，为所述信号的在频谱中的频率的宽度，即在所述频谱中，所述信号的最高频率分量与最低频率分量之间的差值。
通常情况下，干扰信号的能量相对于电台信号较小，由于影响信号能量的因素包括信号的强度和信号的带宽，即在信号能量固定的情况下信号的强度越大，信号的带宽越小，在收音机可以接收到所述干扰信号的场景下，显然所述干扰信号的强度较大，因此所述干扰信号的带宽较小，通常为几十kHz以下。
由于国际标准中规定，FM调制广播频率间隔可以为100千赫兹(kHz)、200kHz、300kHz，或400kHz，因此，相对于干扰信号，电台生成并发射的电台信号的带宽较大。
另外，在信号传输过程中，各种干扰因素对信号的强度影响较大，而对信号的带宽影响较弱，因此，电台信号和干扰信号在传输过程中，电台信号和干扰信号的带宽变化较小。通过以上对电台生成的电台信号和所述干扰信号的带宽描述可知，电台接收到的所述干扰信号的带宽和接收到的所述电台信号的带宽之间有明显差距。
2、本申请实施例涉及的第一带宽阈值，为直接确定收音机接收的信号为电台信号的参考值。可选的，所述第一带宽阈值的取值可以根据在通常情况下电台发射出的电台信号的第一带宽取值范围以及一般干扰信号的第二带宽取值范围进行具体设置，例如，所述第一带宽阈值可以小于或等于所述第一带宽取值范围中的最小值，或者可以大于所述第二带宽取值范围中的最大值。可选的，所述第一带宽阈值还可以根据具体的应用场景具体设定。又例如，根据上述对电台信号和干扰信号的带宽描述可知，所述第一带宽阈值取值为90kHz、95kHz或100kHz等。需要说明的是，本申请实施例对所述第一带宽阈值的取值不作具体限定。
3、本申请实施例涉及的第二带宽阈值，为直接确定收音机接收的信号为干扰信号的参考值。其中，根据上述对第一带宽阈值的描述可知，所述第二带宽阈值小于所述第一带宽阈值。与所述第一带宽阈值的取值原理相同，所述第一带宽阈值的取值可以根据所述第二带宽取值范围进行具体设置，例如，所述第二带宽阈值可以等于或小于所述第二带宽取值范围的最大值。可选的，所述第一带宽阈值还可以根据具体的应用场景具体设定。又例如，根据上述对电台信号和干扰信号的带宽描述可知，所述第二带宽阈值取值为40kHz、45kHz、或50kHz等。需要说明的是，本申请实施例对所述第二带宽阈值的取值不作具体限定。
4、本申请实施例涉及的信号的质量参数，用于指示所述信号的质量，因此所述信号的质量的取值可以体现收音机解调所述信号得到的待播放的信号的质量，影响了所述收音 机播放所述待播放的信号时用户的收听体验。可选的，所述信号的质量参数可以包括以下至少一项：强度、干扰参数，其中，所述干扰参数包括：噪声和/或多路径干扰强度等参数，本申请对此不作限定。
在本申请实施例中，所述信号的质量参数为在收音机根据信号的带宽这一判断电台信号的主要因素，未确定出信号是否为电台信号的情况下，进一步判断电台信号的因素，即次要因素。可选的，所述次要因素可以为上述多种参数中的一种，或者多种参数。可选的，所述次要因素有多种参数时，也可以针对不同的参数设置不同的优先级。
例如，将强度作为第一次要因素，噪声作为第二次要因素，而多路径干扰强度作为第三次要因素等；在这种情况下，所述收音机在通过信号的带宽无法确定接收的信号是哪种信号时，继续通过信号的强度进行判定，若仍然无法确定接收的信号是哪种信号，则进一步通过噪声进行判定，如此继续，直至确定接收的信号是干扰信号还是电台信号。
又例如，将强度作为第一次要因素，将干扰参数(噪声和/或多路径干扰强度)作为第二次要因素；在这种情况下，所述收音机通过信号的带宽无法确定接收的信号是哪种信号时，继续通过信号的强度进行判定，若仍然无法确定接收的信号是哪种信号，则进一步同时通过干扰参数进行判定，从而确定接收的信号是干扰信号还是电台信号。
5、本申请实施例涉及的质量参数阈值，为收音机判断接收的信号为干扰信号/电台信号的参考值。由于干扰信号的质量一般较差，且即使收音机解调质量较差的信号，得到的待播放的信号的质量也会较差，进而降低了用户的收听体验。因此，收音机可以通过接收的信号的质量参数与所述质量参数阈值的比较，将质量较高的信号确定为电台信号。
由于上述对质量参数的描述可知，所述信号的质量参数包括以下至少一项：强度、噪声、多路径干扰强度等参数，相应的，每种质量参数均有对应的质量参数阈值，因此，所述质量参数阈值包括以下至少一项：强度阈值、噪声阈值、多路径干扰强度阈值等，本申请也对此不作限定。
可选的，所述质量参数阈值的取值可以根据干扰信号和电台信号的质量参数的取值范围进行具体设置，也可以结合两种信号的取值范围以及信号确定方法的整体方案进行具体设置，本申请对此不作限定。
6、本申请实施例涉及的信号的强度，可以通过所述信号的幅值的表示，单位为分贝(dBuV)。
7、本申请实施例涉及的噪声，可以为超声波噪声(UltraSonic Noise，USN)。
8、本申请实施例涉及的多路径干扰强度，可以通过宽带调幅(Wideband Amplitude Modulation，WAM)进行指示。
需要说明的是，上述强度、噪声、多路径干扰强度，可以体现信号所受到的各种干扰的强度，当信号所受到的干扰强度较大，那么所述信号的质量较差，当信号所受到的干扰强度较小，那么所述信号的质量较好。因此，可以用于指示信号的质量。
另外，需要理解的是，在本申请的描述中，“第一”、“第二”等词汇，仅用于区分描述的目的，而不能理解为指示或暗示相对重要性，也不能理解为指示或暗示顺序。
下面将结合附图对本申请实施例作进一步地详细描述。
图1示出了本申请实施例提供的一种收音机的信号确定方法，该方法适用于各种FM调制的收音机，例如，普通家用收音机、车载收音机等。所述收音机可以在搜台过程中，通过该方法确定在某频率下接收到的信号为电台信号的情况下，那么所述收音机可以锁定 该频率，并将该频率为电台使用的频率。在参阅图1所示，所述方法的流程包括：
S101：收音机在接收到信号后，确定所述信号的带宽。
电台信号是电台将待发送的音频信号进行FM调制生成的，即电台根据所述音频信号的幅值的变化，改变高频载波信号的频率生成电台信号的。而由于以上对干扰信号的描述可知，所述干扰信号的带宽较小，因此所述干扰信号的可以看作载波。显然，电台信号的带宽和干扰信号的带宽之间有明显差异。因此，在本申请的一些实施例中，所述收音机利用上述差异，将干扰信号和电台信号区分开来，可以提高所述收音机确定接收的信号的类型的准确度。
S102：当所述带宽大于第一带宽阈值时，所述收音机确定所述信号为电台信号。
由于在国际标准中规定中国的FM调制广播频率间隔200kHz，电台信号的必要带宽为200kHz，而通常在单声道100％调制度时电台信号的带宽为180kHz，而立体声100％调制度时电台信号的带宽为256kHz，因此，在中国，收音效果较好的电台信号的一般是大于100kHz的。因此，可选的，所述第一带宽阈值可以为设置为100kHz。当然，所述第一带宽阈值也可以设置为90kHz或95kHz等，本申请实施例对此不作限定。
需要说明的是，在后续实施例中，以所述第一带宽阈值为100kHz为例进行说明。
可选的，在一些具体场景中，为了保证所述收音机确定电台信号的准确性，所述收音机在确定所述带宽大于所述第一带宽阈值的情况下，还可以考虑一些次要因素，即信号的质量参数，例如强度等。
可选的，通过上述步骤，所述收音机可以判断接收的信号为电台信号，可以提高所述收音机的收音效果。
可选的，所述方法还包括以下步骤：
S103：当所述带宽小于第二带宽阈值时，所述收音机确定所述信号为干扰信号。
其中，所述第二带宽阈值小于所述第一带宽阈值。可以根据上述对干扰信号的带宽的描述可知，干扰信号的带宽较小，通常为几十kHz。因此，可选的，所述第二带宽阈值可以设置为50kHz。当然，所述第二带宽阈值也可以设置为40kHz、45kHz或者55kHz等，本申请实施例对此不作限定。
需要说明的是，在后续实施例中，以所述第二带宽阈值为50kHz为例进行说明。
通过本步骤，所述收音机可以确定接收的信号为干扰信号，这样，所述收音机可以对所述干扰信号进行丢弃，若所述收音机在搜台过程中，所述收音机不将接收该干扰信号的频率作为电台使用的频率，从而提高了收音机的收音效果。
通过对S102和S103的描述可知，通过上述两个步骤，可以确定接收的信号为干扰信号还是电台信号，那么，在实际应用中，由于各方面的原因，也会存在带宽较大(大于或等于所述第二带宽阈值)的干扰信号，和/或，带宽较小(小于或等于所述第一带宽阈值)的电台信号。因此，可选的，本申请实施例提供的方法还包括：当所述带宽大于或等于所述第二带宽阈值、且小于或等于所述第一带宽阈值时，收音机确定电台信号的方式，可以参见以下S104a。
S104a：当所述带宽大于或等于所述第二带宽阈值、且小于或等于所述第一带宽阈值时，所述收音机获取所述信号的质量参数，并根据所述信号的质量参数与质量参数阈值的比较结果，确定所述信号为电台信号，所述质量参数用于指示所述信号的质量。
通过上述S104a，所述收音机还可以通过接收的信号的质量参数，确定所述信号为电 台信号，这样，所述收音机可以将质量好的信号作为电台信号，从而可以提高收音机解调所述信号得到待播放的信号的质量，最终可以提高用户的收听体验。
通过上述对质量参数的描述可知，所述质量参数可以包括以下至少一项：强度、噪声、多路径干扰强度等参数。可选的，在S104a中，所述质量参数中的包含的参数不区分优先级。
可选的，当所述质量参数只包括上述其中一项时，所述收音机可以直接根据所述比较结果确定所述信号是否为电台信号，例如以下场景：
场景一：所述质量参数只包括强度，当所述比较结果为所述信号的强度大于强度阈值时，所述收音机确定所述信号为电台信号；当所述比较结果为所述信号的强度小于或等于所述强度阈值时，所述收音机确定所述信号为干扰信号。
在该场景下，所述强度阈值可以根据不影响用户收听体验的电台信号的强度的取值进行设置，例如，所述强度阈值可以设置为35dBuV、40dBuV等，本申请对此不作限定。
场景二：所述质量参数只包括噪声(例如USN)，当所述比较结果为所述信号的噪声小于噪声阈值时，所述收音机确定所述信号为电台信号；当所述比较结果为所述信号的噪声大于或等于噪声阈值时，所述收音机确定所述信号为干扰信号。
在该场景下，所述噪声阈值可以根据不影响用户收听体验的电台信号的噪声的取值进行设置，例如所述噪声阈值可以为15％。
场景三：所述质量参数只包括多路径干扰强度(例如WAM)，当所述比较结果为所述信号的多路径干扰强度小于多路径干扰强度阈值时，所述收音机确定所述信号为电台信号；当所述比较结果为所述信号的多路径干扰强度大于或等于多路径干扰强度阈值时，所述收音机确定所述信号为干扰信号。
同理，在该场景下，所述多路径干扰强度阈值可以根据不影响用户收听体验的电台信号的多路径干扰强度的取值进行设置，例如所述多路径干扰强度阈值可以为15％。
可选的，当所述质量参数只包括上述其中多项时，所述收音机可以根据多种质量参数的比较结果确定所述信号为电台信号还是干扰信号，例如以下场景：
场景四：所述质量参数包括强度和噪声。
场景五：所述质量参数包括强度和多路径干扰强度。
场景六：所述质量参数包括噪声和多路径干扰强度。
场景七：所述质量参数包括强度、噪声，以及多路径干扰强度。
在上述场景四至场景七中，所述收音机可以通过以下几种方式，确定接收的所述信号是电台信号还是干扰信号：
方式一：若接收的所述信号的所述质量参数中任一个参数满足电台信号的条件，则所述收音机确定所述信号为电台信号；否则，所述收音机确定所述信号为干扰信号。
例如，在场景四中，若强度的比较结果为所述信号的信号大于强度阈值，或噪声的比较结果为所述信号的噪声小于噪声阈值，则所述收音机确定所述信号为电台信号；否则所述收音机确定所述信号为干扰信号。
方式二：若接收的所述信号的所述质量参数中每一个参数均满足相应的电台信号的条件，则所述收音机确定所述信号为电台信号；否则，所述收音机确定所述信号为干扰信号。
例如，在场景四中，若强度的比较结果为所述信号的信号大于强度阈值，且噪声的比较结果为所述信号的噪声小于噪声阈值，则所述收音机确定所述信号为电台信号；否则所 述收音机确定所述信号为干扰信号。
通过以上方法，所述收音机可以在通过带宽无法确定接收的所述信号是干扰信号还是电台信号的情况下，通过所述质量参数确定所述信号的类型。
基于上述对质量参数的描述可知，强度，噪声和多路径干扰强度等参数可以作为收音机判定信号种类的次要因素，不同的参数的优先级不同。例如，当所述带宽大于或等于所述第二带宽阈值、且小于或等于所述第一带宽阈值时，所述收音机通过第一次要因素的参数(例如，上述强度，噪声和多路径干扰强度中的至少一种参数)判定所述信号是干扰信号还是电台信号，若无法确定所述信号的类型，则继续通过第二次要因素的参数(上述参数中除第一次要因素的参数以外的至少一种参数)判定所述信号是干扰信号还是电台信号，直至通过最后一个次要因素的参数，判定出所述电台信号的类型。
基于以上描述，在强度为第一次要因素，干扰参数为第二次要因素的场景下，可选的，当所述带宽大于或等于所述第二带宽阈值、且小于或等于所述第一带宽阈值时，收音机通过以下步骤，确定所述信号的类型：
S104b：当所述带宽大于或等于所述第二带宽阈值、且小于或等于所述第一带宽阈值时，所述收音机获取所述信号的强度。
S105：当所述强度大于第一强度阈值时，所述收音机确定所述信号为电台信号。
S106：当所述强度小于第二强度阈值时，所述收音机确定所述信号为干扰信号，其中，所述第二强度阈值小于所述第一强度阈值。
其中，所述第一强度阈值、所述第二强度阈值，可以为根据具体的应用场景进行设定。例如，所述第一强度阈值设置为50dBuV，所述第二强度阈值设置为20dBuV。需要说明的是，本申请实施例第一强度阈值和所述第二强度阈值的具体取值不作限定，后续实施例以上述取值为例进行说明。
可选的，所述方法还可以包括以下步骤：
S107：当所述强度大于或等于所述第二强度阈值、且小于或等于所述第一强度阈值时，所述收音机获取所述信号的干扰参数，所述干扰参数包括以下至少一项：噪声、多路径干扰强度；
S108：当所述干扰参数小于干扰参数阈值时，所述收音机确定所述信号为电台信号。
其中所述干扰参数阈值可以根据具体的应用场景进行具体设置。例如当所述干扰参数包括噪声，且所述噪声为USN时，所述干扰参数阈值中针对所述USN设置的阈值为15％；当所述干扰参数包括多路径干扰强度，且所述多路径干扰强度为WAM时，所述干扰参数阈值中针对所述多路径干扰强度设置的阈值为15％。
需要说明的是，本申请实施例干扰参数阈值的具体取值不作限定，后续实施例以上述取值为例进行说明。
S109：当所述干扰参数大于或等于所述干扰参数阈值时，所述收音机确定所述信号为干扰信号。
通过以上方法，所述收音机可以在通过带宽无法确定接收的所述信号是干扰信号还是电台信号的情况下，通过上述方法，所述收音机可以依次通过所述信号的强度、干扰参数判定所述信号的类型。这样，所述收音机可以将质量好的信号作为电台信号，从而可以提高收音机解调所述信号得到待播放的信号的质量，最终可以提高用户的收听体验。
采用本申请实施例提供的方法，收音机可以根据接收的信号的带宽与设定的带宽阈值 的比较，确定所述信号为电台信号。由于信号在传输过程中，尽管强度有可能变化较大，但是信号的带宽变化较小。另外，电台信号和干扰信号的带宽差别较大，因此，相对于现有技术，在本方法中收音机将信号的带宽作为判断电台信号的主要因素，判断接收的信号为电台信号，可以提高收音机的收音效果。
基于以上实施例，本申请实施例提供了一种收音机的信号确定方法实例，参阅图2所示，该方法包括以下步骤：
S201：收音机在接收到信号后，确定所述信号的带宽BW。
S202：当BW>100kHz时，所述收音机确定所述信号为电台信号。
S203：当BW<50kHz时，所述收音机确定所述信号为干扰信号。
S204：当50kHz≤BW≤100kHz时，所述收音机获取所述信号的强度L。
S205：当L>50dBuV时，所述收音机确定所述信号为电台信号。
S206：当L<20dBuV时，所述收音机确定所述信号为干扰信号。
S207：当20dBuV≤L≤50dBuV时，所述收音机获取所述信号的USN和WAM。
S208：当USN<15％，且WAM<15％时，所述收音机确定所述信号为电台信号。
S209：当USN≥15％，或WAM≥15％时，所述收音机确定所述信号为干扰信号。
通过本申请实施例提供的方法，收音机可以根据信号的带宽，确定接收到的信号的类型，提高所述收音机的收音效果。进一步的，在通过带宽无法确定所述信号的类型的情形，可以继续通过信号的强度、USN和WAM等参数，确定所述信号的类型。这样，所述收音机可以将质量好的信号作为电台信号，从而可以提高收音机解调所述信号得到待播放的信号的质量，最终可以提高用户的收听体验。由于相对于现有技术，在本方法中信号的带宽作为判断电台信号的主要因素，因此该方法可以提高收音机的收音效果。
基于以上实施例，本申请实施例还提供了另一种收音机的信号确定方法实例，参阅图3所示，在本方法中，除步骤S302以及后续步骤S3021和S3022以外，其他步骤与上述图2所示的实例中的除步骤S202以外的步骤相同，因此，可以相互参见，此处不再赘述。那么与图2所示的实例不同的步骤为：
S302：当BW>100kHz时，所述收音机获取所述信号的强度L。
S3021：当L>30DBuV时，所述收音机确定所述信号为电台信号。
S3022：当L≤30DBuV时，所述收音机确定所述信号为干扰信号。
通过上述步骤，所述收音机可以将带宽满足电台信号的带宽条件，但是强度较低的信号判定为干扰信号，这样，所述收音机可以将满足电台信号的带宽条件，且质量好的信号作为电台信号，从而可以进一步提高收音机解调所述信号得到待播放的信号的质量，可以提高用户的收听体验。
基于以上实施例，本申请实施例还提供了一种收音机，所述收音机可以实现如图1-图3所示实施例中的收音机的信号确定方法，参阅图4所示，所述收音机400包括：接收单元401、处理单元402，其中，
接收单元401，用于接收信号；
处理单元402，用于确定所述信号的带宽；以及当所述带宽大于第一带宽阈值时，确定所述信号为电台信号。
可选的，所述处理单元402，还用于：
当所述带宽小于第二带宽阈值时，确定所述信号为干扰信号，其中，所述第二带宽阈 值小于所述第一带宽阈值。
可选的，所述处理单元402，还用于：
当所述带宽大于或等于所述第二带宽阈值、且小于或等于所述第一带宽阈值时，获取所述信号的质量参数，所述质量参数用于指示所述信号的质量；
根据所述信号的质量参数与质量参数阈值的比较结果，确定所述信号为电台信号。
可选的，所述质量参数包括以下至少一项：强度、噪声和多路径干扰强度；
当所述质量参数包括强度时，所述比较结果包括所述信号的强度大于强度阈值；或者
当所述质量参数包括噪声时，所述比较结果包括所述信号的噪声小于噪声阈值；或者
当所述质量参数包括多路径干扰强度时，所述比较结果包括所述信号的多路径干扰强度小于多路径干扰强度阈值。
可选的，所述处理单元402，还用于：
当所述带宽大于或等于所述第二带宽阈值、且小于或等于所述第一带宽阈值时，获取所述信号的强度；
当所述强度大于第一强度阈值时，确定所述信号为电台信号；或者
当所述强度小于第二强度阈值时，确定所述信号为干扰信号，其中，所述第二强度阈值小于所述第一强度阈值。
可选的，所述处理单元402，还用于：
当所述强度大于或等于所述第二强度阈值、且小于或等于所述第一强度阈值时，获取所述信号的干扰参数，所述干扰参数包括以下至少一项：噪声、多路径干扰强度；
当所述干扰参数小于干扰参数阈值时，确定所述信号为电台信号；或者
当所述干扰参数大于或等于所述干扰参数阈值时，确定所述信号为干扰信号。
本申请实施例提供了一种收音机，所述收音机可以根据接收的信号的带宽与设定的带宽阈值的比较，确定所述信号为电台信号。由于信号在传输过程中，尽管信号的强度有可能变化较大，但是信号的带宽变化较小。另外，电台信号和干扰信号的带宽差别较大，因此，所述收音机可以将信号的带宽作为判断电台信号的主要因素，判断接收的信号为电台信号，可以提高所述收音机的收音效果。
需要说明的是，本申请实施例中对单元的划分是示意性的，仅仅为一种逻辑功能划分，实际实现时可以有另外的划分方式。在本申请的实施例中的各功能单元可以集成在一个处理单元中，也可以是各个单元单独物理存在，也可以两个或两个以上单元集成在一个单元中。上述集成的单元既可以采用硬件的形式实现，也可以采用软件功能单元的形式实现。
基于以上实施例，本申请实施例还提供了一种计算机存储介质，该存储介质中存储软件程序，该软件程序在被一个或多个处理器读取并执行时可实现实施例提供的收音机的信号确定方法。所述计算机存储介质可以包括：U盘、移动硬盘、只读存储器(Read-Only Memory，ROM)、随机存取存储器(Random Access Memory，RAM)、磁碟或者光盘等各种可以存储程序代码的介质。
基于以上实施例，本申请实施例还提供了一种收音机，所述收音机用于实现如图1-图3所示的收音机的信号确定方法，具有如图4所示的收音机400的功能。参阅图5所示，所述收音机包括：接收器501、处理器502以及存储器503。其中，所述接收器501、所述处理器502以及所述存储器503之间相互连接。
可选的，所述接收器501、所述处理器502以及所述存储器503之间通过总线504相 互连接。所述总线504可以是外设部件互连标准(peripheral component interconnect，PCI)总线或扩展工业标准结构(extended industry standard architecture，EISA)总线等。所述总线可以分为地址总线、数据总线、控制总线等。为便于表示，图4中仅用一条粗线表示，但并不表示仅有一根总线或一种类型的总线。
在所述收音机500在实现上述实施例中的收音机的信号确定方法的过程中：
所述接收器501用于接收信号。所述接收器501中包括接收天线。
所述处理器502用于当所述带宽大于第一带宽阈值时，确定所述信号为电台信号。
可选的，所述处理器502，还用于：
当所述带宽小于第二带宽阈值时，确定所述信号为干扰信号，其中，所述第二带宽阈值小于所述第一带宽阈值。
可选的，所述处理器502，还用于：
当所述带宽大于或等于所述第二带宽阈值、且小于或等于所述第一带宽阈值时，获取所述信号的质量参数，所述质量参数用于指示所述信号的质量；
根据所述信号的质量参数与质量参数阈值的比较结果，确定所述信号为电台信号。
可选的，所述质量参数包括以下至少一项：强度、噪声和多路径干扰强度；
当所述质量参数包括强度时，所述比较结果包括所述信号的强度大于强度阈值；或者
当所述质量参数包括噪声时，所述比较结果包括所述信号的噪声小于噪声阈值；或者
当所述质量参数包括多路径干扰强度时，所述比较结果包括所述信号的多路径干扰强度小于多路径干扰强度阈值。
可选的，所述处理器502，还用于：
当所述带宽大于或等于所述第二带宽阈值、且小于或等于所述第一带宽阈值时，获取所述信号的强度；
当所述强度大于第一强度阈值时，确定所述信号为电台信号；或者
当所述强度小于第二强度阈值时，确定所述信号为干扰信号，其中，所述第二强度阈值小于所述第一强度阈值。
可选的，所述处理器502，还用于：
当所述强度大于或等于所述第二强度阈值、且小于或等于所述第一强度阈值时，获取所述信号的干扰参数，所述干扰参数包括以下至少一项：噪声、多路径干扰强度；
当所述干扰参数小于干扰参数阈值时，确定所述信号为电台信号；或者
当所述干扰参数大于或等于所述干扰参数阈值时，确定所述信号为干扰信号。
所述存储器503，用于存放应用程序等。具体地，应用程序可以包括程序代码，该程序代码包括计算机操作指令。存储器503可能包含随机存取存储器(random access memory，RAM)，也可能还包括非易失性存储器(non-volatile memory)，例如至少一个磁盘存储器。处理器502执行存储器503所存放的应用程序，实现上述功能，从而实现上述实施例提供的收音机的信号确定方法。
可选的，所述收音机500还包括传统的各种信号处理器件、耳机接口以及扬声器等部件，用于实现收音机的播放功能，此处不再赘述。
综上所述，本申请实施例提供了一种收音机的信号确定方法及收音机，在该方法中，收音机可以根据接收的信号的带宽与设定的带宽阈值的比较，确定所述信号为电台信号。由于信号在传输过程中，尽管信号的强度有可能变化较大，但是信号的带宽变化较小。另 外，电台信号和干扰信号的带宽差别较大，因此，相对于现有技术，在本申请实施例提供的方法中收音机将信号的带宽作为判断电台信号的主要因素，判断接收的信号为电台信号，可以提高收音机的收音效果。
本领域内的技术人员应明白，本申请的实施例可提供为方法、系统、或计算机程序产品。因此，本申请可采用完全硬件实施例、完全软件实施例、或结合软件和硬件方面的实施例的形式。而且，本申请可采用在一个或多个其中包含有计算机可用程序代码的计算机可用存储介质(包括但不限于磁盘存储器、CD-ROM、光学存储器等)上实施的计算机程序产品的形式。
本申请是参照根据本申请实施例的方法、设备(系统)、和计算机程序产品的流程图和/或方框图来描述的。应理解可由计算机程序指令实现流程图和/或方框图中的每一流程和/或方框、以及流程图和/或方框图中的流程和/或方框的结合。可提供这些计算机程序指令到通用计算机、专用计算机、嵌入式处理机或其他可编程数据处理设备的处理器以产生一个机器，使得通过计算机或其他可编程数据处理设备的处理器执行的指令产生用于实现在流程图一个流程或多个流程和/或方框图一个方框或多个方框中指定的功能的装置。
这些计算机程序指令也可存储在能引导计算机或其他可编程数据处理设备以特定方式工作的计算机可读存储器中，使得存储在该计算机可读存储器中的指令产生包括指令装置的制造品，该指令装置实现在流程图一个流程或多个流程和/或方框图一个方框或多个方框中指定的功能。
这些计算机程序指令也可装载到计算机或其他可编程数据处理设备上，使得在计算机或其他可编程设备上执行一系列操作步骤以产生计算机实现的处理，从而在计算机或其他可编程设备上执行的指令提供用于实现在流程图一个流程或多个流程和/或方框图一个方框或多个方框中指定的功能的步骤。
显然，本领域的技术人员可以对本申请实施例进行各种改动和变型而不脱离本申请实施例的范围。这样，倘若本申请实施例的这些修改和变型属于本申请权利要求及其等同技术的范围之内，则本申请也意图包含这些改动和变型在内。

Claims (19)

  1. 一种收音机的信号确定方法，其特征在于，包括：
    收音机在接收到信号后，确定所述信号的带宽；
    当所述带宽大于第一带宽阈值时，所述收音机确定所述信号为电台信号。
  2. 如权利要求1所述的方法，其特征在于，所述方法还包括：
    当所述带宽小于第二带宽阈值时，所述收音机确定所述信号为干扰信号，其中，所述第二带宽阈值小于所述第一带宽阈值。
  3. 如权利要求2所述的方法，其特征在于，所述方法还包括：
    当所述带宽大于或等于所述第二带宽阈值、且小于或等于所述第一带宽阈值时，所述收音机获取所述信号的质量参数，所述质量参数用于指示所述信号的质量；
    所述收音机根据所述信号的质量参数与质量参数阈值的比较结果，确定所述信号为电台信号。
  4. 如权利要求3所述的方法，其特征在于，所述质量参数包括以下至少一项：强度、噪声和多路径干扰强度；
    当所述质量参数包括强度时，所述比较结果包括所述信号的强度大于强度阈值；或者
    当所述质量参数包括噪声时，所述比较结果包括所述信号的噪声小于噪声阈值；或者
    当所述质量参数包括多路径干扰强度时，所述比较结果包括所述信号的多路径干扰强度小于多路径干扰强度阈值。
  5. 如权利要求2所述的方法，其特征在于，所述方法还包括：
    当所述带宽大于或等于所述第二带宽阈值、且小于或等于所述第一带宽阈值时，所述收音机获取所述信号的强度；
    当所述强度大于第一强度阈值时，所述收音机确定所述信号为电台信号；或者
    当所述强度小于第二强度阈值时，所述收音机确定所述信号为干扰信号，其中，所述第二强度阈值小于所述第一强度阈值。
  6. 如权利要求5所述的方法，其特征在于，所述方法还包括：
    当所述强度大于或等于所述第二强度阈值、且小于或等于所述第一强度阈值时，所述收音机获取所述信号的干扰参数，所述干扰参数包括以下至少一项：噪声、多路径干扰强度；
    当所述干扰参数小于干扰参数阈值时，所述收音机确定所述信号为电台信号；或者
    当所述干扰参数大于或等于所述干扰参数阈值时，所述收音机确定所述信号为干扰信号。
  7. 一种收音机，其特征在于，包括：
    接收单元，用于接收信号；
    处理单元，用于确定所述信号的带宽；以及当所述带宽大于第一带宽阈值时，确定所述信号为电台信号。
  8. 如权利要求7所述的收音机，其特征在于，所述处理单元，还用于：
    当所述带宽小于第二带宽阈值时，确定所述信号为干扰信号，其中，所述第二带宽阈值小于所述第一带宽阈值。
  9. 如权利要求8所述的收音机，其特征在于，所述处理单元，还用于：
    当所述带宽大于或等于所述第二带宽阈值、且小于或等于所述第一带宽阈值时，获取所述信号的质量参数，所述质量参数用于指示所述信号的质量；
    根据所述信号的质量参数与质量参数阈值的比较结果，确定所述信号为电台信号。
  10. 如权利要求9所述的收音机，其特征在于，所述质量参数包括以下至少一项：强度、噪声和多路径干扰强度；
    当所述质量参数包括强度时，所述比较结果包括所述信号的强度大于强度阈值；或者
    当所述质量参数包括噪声时，所述比较结果包括所述信号的噪声小于噪声阈值；或者
    当所述质量参数包括多路径干扰强度时，所述比较结果包括所述信号的多路径干扰强度小于多路径干扰强度阈值。
  11. 如权利要求8所述的收音机，其特征在于，所述处理单元，还用于：
    当所述带宽大于或等于所述第二带宽阈值、且小于或等于所述第一带宽阈值时，获取所述信号的强度；
    当所述强度大于第一强度阈值时，确定所述信号为电台信号；或者
    当所述强度小于第二强度阈值时，确定所述信号为干扰信号，其中，所述第二强度阈值小于所述第一强度阈值。
  12. 如权利要求11所述的收音机，其特征在于，所述处理单元，还用于：
    当所述强度大于或等于所述第二强度阈值、且小于或等于所述第一强度阈值时，获取所述信号的干扰参数，所述干扰参数包括以下至少一项：噪声、多路径干扰强度；
    当所述干扰参数小于干扰参数阈值时，确定所述信号为电台信号；或者
    当所述干扰参数大于或等于所述干扰参数阈值时，确定所述信号为干扰信号。
  13. 一种收音机，其特征在于，包括：
    接收器，用于接收信号；
    存储器，用于存储程序指令；
    处理器，用于调用存储在所述存储器中的所述程序指令，执行：
    确定所述信号的带宽；
    当所述带宽大于第一带宽阈值时，确定所述信号为电台信号。
  14. 如权利要求13所述的收音机，其特征在于，所述处理器还用于：
    当所述带宽小于第二带宽阈值时，确定所述信号为干扰信号，其中，所述第二带宽阈值小于所述第一带宽阈值。
  15. 如权利要求14所述的收音机，其特征在于，所述处理器还用于：
    当所述带宽大于或等于所述第二带宽阈值、且小于或等于所述第一带宽阈值时，获取所述信号的质量参数，所述质量参数用于指示所述信号的质量；
    根据所述信号的质量参数与质量参数阈值的比较结果，确定所述信号为电台信号。
  16. 如权利要求15所述的收音机，其特征在于，所述质量参数包括以下至少一项：强度、噪声和多路径干扰强度；
    当所述质量参数包括强度时，所述比较结果包括所述信号的强度大于强度阈值；或者
    当所述质量参数包括噪声时，所述比较结果包括所述信号的噪声小于噪声阈值；或者
    当所述质量参数包括多路径干扰强度时，所述比较结果包括所述信号的多路径干扰强度小于多路径干扰强度阈值。
  17. 如权利要求14所述的收音机，其特征在于，所述处理器还用于：
    当所述带宽大于或等于所述第二带宽阈值、且小于或等于所述第一带宽阈值时，获取所述信号的强度；
    当所述强度大于第一强度阈值时，确定所述信号为电台信号；或者
    当所述强度小于第二强度阈值时，确定所述信号为干扰信号，其中，所述第二强度阈值小于所述第一强度阈值。
  18. 如权利要求17所述的收音机，其特征在于，所述处理器还用于：
    当所述强度大于或等于所述第二强度阈值、且小于或等于所述第一强度阈值时，获取所述信号的干扰参数，所述干扰参数包括以下至少一项：噪声、多路径干扰强度；
    当所述干扰参数小于干扰参数阈值时，确定所述信号为电台信号；或者
    当所述干扰参数大于或等于所述干扰参数阈值时，确定所述信号为干扰信号。
  19. 一种计算机存储介质，其特征在于，所述计算机可读存储介质中存储软件程序，所述软件程序在被一个或多个处理器读取并执行时可实现权利要求1-6任一项所述的方法。
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CN105915307A (zh) * 2016-04-13 2016-08-31 武汉海微科技有限公司 一种车载收音机抗干扰实现方法

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