CN114520668B - Signal transmission method, signal transmission system and computer storage medium - Google Patents
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- 230000008054 signal transmission Effects 0.000 title claims abstract description 57
- 238000000034 method Methods 0.000 title claims abstract description 40
- 238000012545 processing Methods 0.000 claims abstract description 39
- 238000005070 sampling Methods 0.000 claims abstract description 32
- 238000004891 communication Methods 0.000 claims abstract description 24
- 238000006243 chemical reaction Methods 0.000 claims abstract description 13
- 230000008030 elimination Effects 0.000 claims abstract description 7
- 238000003379 elimination reaction Methods 0.000 claims abstract description 7
- 238000004806 packaging method and process Methods 0.000 claims abstract description 7
- 230000005236 sound signal Effects 0.000 claims description 40
- 230000005540 biological transmission Effects 0.000 claims description 10
- 238000012544 monitoring process Methods 0.000 claims description 10
- 238000004590 computer program Methods 0.000 claims description 4
- 238000005538 encapsulation Methods 0.000 claims description 2
- 238000010586 diagram Methods 0.000 description 9
- 230000006870 function Effects 0.000 description 2
- 230000006855 networking Effects 0.000 description 2
- 238000012858 packaging process Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
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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
- H04B1/38—Transceivers, i.e. devices in which transmitter and receiver form a structural unit and in which at least one part is used for functions of transmitting and receiving
- H04B1/3822—Transceivers, i.e. devices in which transmitter and receiver form a structural unit and in which at least one part is used for functions of transmitting and receiving specially adapted for use in vehicles
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- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10L—SPEECH ANALYSIS TECHNIQUES OR SPEECH SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING TECHNIQUES; SPEECH OR AUDIO CODING OR DECODING
- G10L21/00—Speech or voice signal processing techniques to produce another audible or non-audible signal, e.g. visual or tactile, in order to modify its quality or its intelligibility
- G10L21/02—Speech enhancement, e.g. noise reduction or echo cancellation
- G10L21/0208—Noise filtering
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- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10L—SPEECH ANALYSIS TECHNIQUES OR SPEECH SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING TECHNIQUES; SPEECH OR AUDIO CODING OR DECODING
- G10L21/00—Speech or voice signal processing techniques to produce another audible or non-audible signal, e.g. visual or tactile, in order to modify its quality or its intelligibility
- G10L21/02—Speech enhancement, e.g. noise reduction or echo cancellation
- G10L21/0208—Noise filtering
- G10L2021/02082—Noise filtering the noise being echo, reverberation of the speech
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Abstract
The application discloses a signal transmission method, a signal transmission system and a computer storage medium, wherein the signal transmission system comprises at least two split machines and a host machine, the split machines receive at least one input signal and process the input signal to obtain a data packet to be transmitted, a first processor in the split machines samples the input signal to obtain a sampling signal, and noise reduction or echo elimination processing is carried out to obtain a processed sampling signal; the second processor performs packaging processing and signal conversion processing on the processed sampling signals to obtain data packets to be transmitted; the host processes the data packet to be transmitted to obtain an output signal, and outputs the output signal to other split machines and/or external equipment based on receiver information carried in the output signal so as to realize communication between at least two split machines or communication between the split machines and the external equipment. Through the mode, the application can improve the utilization rate of the split machine, the cost is reduced, and long-distance transmission of signals can be realized.
Description
Technical Field
The present invention relates to the field of communications technologies, and in particular, to a signal transmission method, a signal transmission system, and a computer storage medium.
Background
The current wireless interphone of the vehicle-mounted private network is widely applied to police law enforcement official vehicles, police dispatch control centers, special material transport vehicles, subway trains and the like, one trolley-mounted interphone is installed on one trolley under partial conditions, but a plurality of interphones are required under certain special conditions, dispatching control centers are required to be utilized for dispatching so as to ensure that effective communication can be carried out among the interphones, a host computer and a control panel of the current dispatching control center are separated, a longer networking line is required, the number of connecting lines of the current dispatching control center is large, the line diameter is large, and the wiring cost is high, so that the wireless interphone is unfavorable for large-scale use.
Disclosure of Invention
The application provides a signal transmission method, a signal transmission system and a computer storage medium, which can utilize a host to realize communication between a split machine and other split machines/external devices, can improve the utilization rate of the split machine, reduce the cost and can realize long-distance transmission of signals.
In order to solve the technical problems, the technical scheme adopted by the application is as follows: the signal transmission system comprises at least two split machines and a host machine, wherein the split machines are used for receiving at least one input signal and processing the input signal to obtain a data packet to be transmitted, the split machines comprise a first processor and a second processor which are mutually connected, the first processor is used for sampling the input signal to obtain a sampling signal, and noise reduction or echo elimination processing is carried out on the sampling signal to obtain a processed sampling signal; the second processor is used for carrying out packaging processing and signal conversion processing on the processed sampling signals to obtain data packets to be transmitted; the host is connected with each split machine and is used for processing the data packet to be transmitted to obtain an output signal, and outputting the output signal to other split machines and/or external equipment based on the receiver information carried in the output signal so as to realize communication between at least two split machines or communication between the split machines and the external equipment.
In order to solve the technical problems, the technical scheme adopted by the application is as follows: there is provided a signal transmission method applied to the above signal transmission system, the signal transmission system including a host and at least two split machines connected with the host, the method comprising: the split machine receives at least one input signal and processes the input signal to obtain a data packet to be transmitted, wherein the split machine comprises a first processor and a second processor which are connected with each other, the first processor samples the input signal to obtain a sampling signal, and performs noise reduction or echo elimination processing on the sampling signal to obtain a processed sampling signal; the second processor performs packaging processing and signal conversion processing on the processed sampling signals to obtain the data packet to be transmitted; the host processes the data packet to be transmitted to obtain an output signal, and outputs the output signal to other split machines and/or external equipment based on receiver information carried in the output signal so as to realize communication between at least two split machines or communication between the split machines and the external equipment.
In order to solve the technical problems, the technical scheme adopted by the application is as follows: there is provided a computer storage medium for storing a computer program for implementing the above-described signal transmission method when executed by a processor.
Through above-mentioned scheme, the beneficial effect of this application is: the signal transmission system comprises a host and at least two split machines connected with the host, wherein each split machine comprises a first processor and a second processor, the first processor can sample an input signal to generate a sampling signal, and then noise reduction or echo elimination processing is carried out on the sampling signal so as to filter interference components in the sampling signal; the second processor can package and convert the processed sampling signals to generate a data packet to be transmitted; when at least two split machines or split machines and external equipment need to communicate, the host can process a data packet to be transmitted sent by the split machines to generate an output signal, and output the output signal to other split machines or external equipment according to receiver information in the output signal, so that communication connection between the at least two split machines or split machines and the external equipment is realized, and because one host is utilized, communication connection is established between the at least two split machines or split machines and the external equipment, the use amount of the host can be reduced, the use rate of the split machines is improved, the cost is reduced, and resources are saved; and because the analog signal is converted into the digital audio signal suitable for long-distance constant, the signal can be transmitted for a longer distance, and the signal transmission distance is effectively improved.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art. Wherein:
FIG. 1 is a schematic diagram of an embodiment of a signal transmission system provided in the present application;
FIG. 2 is a schematic diagram of another embodiment of a signal transmission system provided herein;
FIG. 3 is a schematic diagram of a signal transmission system according to another embodiment of the present application;
FIG. 4 is a flowchart illustrating an embodiment of a signal transmission method provided in the present application;
FIG. 5 is a schematic diagram of a signal transmission system according to another embodiment of the present application;
fig. 6 is a schematic structural diagram of an embodiment of a computer storage medium provided in the present application.
Detailed Description
The following description of the technical solutions in the embodiments of the present application will be made clearly and completely with reference to the drawings in the embodiments of the present application, and it is apparent that the described embodiments are only some embodiments of the present application, but not all embodiments. All other embodiments, which can be made by one of ordinary skill in the art without undue burden from the present disclosure, are within the scope of the present disclosure.
In a subway application scene, in order to facilitate turning around, a subway is provided with a head and a tail head, and when the interphone is installed, the head and the tail heads are respectively installed, so that the cost is increased, and in addition, in the train driving stage, one interphone is always in an idle state, so that the resource is wasted; in the application scene of the dispatching center, the dispatching center is provided with an interphone for each dispatching person, a plurality of dispatching persons with relatively close distances are arranged in the same group, and when the interphone is configured according to the tradition, the use efficiency of the interphone is low, the antenna arrangement is also very dense, and the mutual interference is relatively large; in addition, the current car bench split machine has the problem that the core number of networking link is many, the wire diameter is big, wiring is difficult and the cost is higher, and a host computer can only be furnished with a control panel, and audio signal processing has been put at the host computer end, has a serious drawback: the connection line of the split telephone cannot be too long, otherwise, the echo cannot be completely eliminated due to too long delay when duplex speaking, and the conversation quality is seriously affected.
Referring to fig. 1, fig. 1 is a schematic structural diagram of an embodiment of a signal transmission system provided in the present application, where the signal transmission system includes: at least two split machines 11 and a main machine 12.
The splitter 11 is configured to receive at least one input signal, and process the input signal to obtain a data packet to be transmitted, where the input signal may be an analog signal, and the generated data packet to be transmitted is a signal suitable for long-distance transmission. Specifically, the split machine 11 includes a first processor 111 and a second processor 112 that are connected to each other, where the first processor 111 is configured to sample an input signal to obtain a sampled signal, and perform noise reduction or echo cancellation processing on the sampled signal to eliminate or reduce a middle interference component of the sampled signal, so as to obtain a processed sampled signal; the second processor 112 performs a packaging process and a signal conversion process on the processed sampling signal, so as to obtain a data packet to be transmitted.
The host 12 is connected with each split machine 11 and is used for processing the data packet to be transmitted to obtain an output signal; specifically, the host 12 may encode, decode, or mix the data packets to be transmitted to obtain a processed signal, i.e., an output signal.
The host 12 is further configured to output, after generating the output signal, the output signal to other split machines and/or external devices based on the receiver information carried in the output signal, so as to implement communication between at least two split machines 11 or communication between the split machines 11 and the external devices; specifically, the receiver information may be an address of the receiver, the host 12 may output an output signal to other split machines matched with the receiver information, so that the split machine 11 sending the data packet to be transmitted to the host 12 is in communication connection with the other split machines, or the host 12 sends the output signal to external equipment matched with the receiver information, so that the split machine 11 is in communication connection with the external equipment, and the external equipment may be other hosts, the split machine 11 connected with other hosts, or other devices; it can be understood that the information of the receiver can also be the identifier of the receiver, and the identifier can be allocated to each split machine 11 and all the external devices in advance so as to distinguish different split machines 11 from the external devices, thereby facilitating the subsequent signal transmission.
The embodiment provides a signal transmission system, which can be applied to a wireless vehicle-mounted terminal interphone or a control center dispatching interphone, wherein the signal transmission system comprises a host 12 and at least two split machines 11 connected with the host 12, and the split machines 11 can perform noise reduction, echo elimination, encapsulation processing or signal conversion processing to generate a data packet to be transmitted; when at least two split machines 11 need to communicate, the host 12 can process the data packet to be transmitted sent by the split machines 11, generate output signals and output the output signals to other split machines, so as to realize communication connection between different split machines 11 mounted on the same host 12 or realize communication connection between the split machines 11 mounted on different hosts 12, and since at least two split machines 11 or the split machines 11 are connected with external equipment by using one host 12, the use amount of the host 12 is reduced, the use rate of the split machines 11 is improved, the cost is reduced, and resources are saved; and because the analog signal is converted into the digital audio signal suitable for long-distance constant, the signal can be transmitted for a longer distance, and the signal transmission distance can be effectively improved.
Referring to fig. 2, fig. 2 is a schematic structural diagram of another embodiment of a signal transmission system provided in the present application, where the signal transmission system includes: at least two split machines 21 and a main machine 22.
Each split machine 21 includes a first processor 211 and a second processor 212 connected to each other; the first processor 211 is configured to sample an input signal to obtain a sampled signal, and perform noise reduction or echo cancellation processing on the sampled signal to obtain a processed sampled signal; in particular, the input signal may be a video signal or an audio signal, and the sampled signal is a discrete signal. The second processor 212 is configured to perform signal conversion processing on the processed sampling signal to obtain a digital audio signal, and encapsulate the digital audio signal according to a preset protocol to generate a data packet to be transmitted, where the preset protocol includes a TCP/IP (Transmission Control Protocol/Internet Protocol ), an RS485 protocol, or a USB (Universal Serial Bus, universal serial bus) protocol; the second processor 212 may also encode or decode the processed sampled signal.
The host 22 includes a third processor 221, and the third processor 221 is connected to the split machine 21; specifically, the third processor 221 is connected to the second processor 212, and the third processor 221 is configured to monitor, encode, decode, or mix at least two data packets to be transmitted to obtain an output signal.
In a specific embodiment, as shown in fig. 2, the host 22 further includes a transmitting circuit 222, where the transmitting circuit 222 is connected to the third processor 221, and the transmitting circuit 222 is configured to transmit the signal output by the third processor 221 to other split machines and/or external devices.
In another specific embodiment, as shown in fig. 2, the host 22 further includes a receiving circuit 223, where the receiving circuit 223 is configured to receive the radio frequency signals sent by other split machines, and send the radio frequency signals to the third processor 221; the third processor 221 is further configured to process the radio frequency signal to obtain a listening signal, and send the listening signal to the split device 21, so that the split device 21 plays the listening signal.
In yet another specific embodiment, referring to fig. 2 and 3, at least two split units 21 include a first split unit 21a and a second split unit 21b, the first processor 211 is an audio processing circuit, the second processor 212 is an audio signal codec circuit, the third processor 221 includes a first codec 2211, a mixer 2212 and a second codec 2213 connected in sequence, and the third processor 221 can be connected to the second processor 212 through a signal line, and the signal line can transmit an audio signal and a control signal at the same time.
The first split machine 21a and the second split machine 21b are near-end, so that not only can input audio signals be collected, but also the audio signals can be played, and the audio processing circuit 221 can be utilized to perform noise reduction or echo cancellation and other operations, so that the processed audio signals are not limited in transmission delay and can be transmitted for a longer distance; the host 22 is at the far end, the host 22 can encode, decode, multiplex or process the audio signal; when the first split device 21a communicates with the second split device 21b, the first split device 21a may send an audio signal to the host 22, and the host 22 forwards the audio signal to the second split device 21b, thereby enabling communication between the first split device 21a and the second split device 21 b.
In this embodiment, under the condition of having one host 22, at least two split machines 21 can be collocated, at least two split machines 21 can utilize the host 22 to realize one-to-one or one-to-many calls, the use efficiency of the split machines 21 is higher, the use cost can be reduced, the multichannel time-sharing intercom can be realized, the interference of antennas is smaller, and the problems of low use efficiency and dense mutual interference of antennas of a single wireless terminal of a control center can be solved; because the control signal and the audio signal share one signal line for transmission, the core number of the wire rod can be obviously reduced, and the wiring cost is reduced.
Referring to fig. 4 to 5 in combination, fig. 4 is a flow chart illustrating an embodiment of a signal transmission method provided in the present application, and fig. 5 is a structural diagram illustrating another embodiment of a signal transmission system provided in the present application, where the signal transmission method is applied to a signal transmission system, the signal transmission system includes a host 52 and at least two split machines 51 connected to the host 52, and the method includes:
step 41: the split machine receives at least one input signal and processes the input signal to obtain a data packet to be transmitted.
The split machine 51 may sample an input signal to obtain a sampled signal, and perform noise reduction or echo cancellation processing on the sampled signal to obtain a processed sampled signal; then, carrying out signal conversion on the processed sampling signals to obtain data packets to be transmitted; specifically, the split machine 51 includes a first processor 511 and a second processor 512 that are connected to each other, where the first processor 511 is configured to sample an input signal to obtain a sampled signal, and perform noise reduction or echo cancellation processing on the sampled signal to eliminate or reduce a middle interference component of the sampled signal, so as to obtain a processed sampled signal; the second processor 512 performs a packaging process and a signal conversion process on the processed sampling signal to obtain a data packet to be transmitted.
Step 42: the host processes the data packet to be transmitted to obtain an output signal, and outputs the output signal to other split machines and/or external equipment based on receiver information carried in the output signal so as to realize communication between at least two split machines or communication between the split machines and the external equipment.
In a specific embodiment, the host 52 may monitor, encode, decode or mix at least two data packets to be transmitted to obtain an output signal, and then transmit the output signal to other split machines; or the host 52 may receive the radio frequency signals sent by other split machines, and process the radio frequency signals to obtain a monitoring signal; the listening signal is then sent to the splitter 51 so that the splitter 51 plays the listening signal.
For example, the split device 51 performs simplex group call, the split device 51 may first send the collected audio signal to the audio processing circuit 511 to perform noise reduction or echo cancellation, and then output the processed audio signal to the audio signal codec circuit 512 to convert the processed audio signal into a signal suitable for long-distance transmission; specifically, the processed audio signal may be first converted into a digital audio signal, and the digital audio signal is encapsulated by using TCP/IP, RS485 protocol or USB protocol, and the data packet to be transmitted is sent to the host 52, where the data packet to be transmitted includes the audio signal to be transmitted and receiver information, and the receiver information is used to identify the device that receives the audio signal.
The host 52 can mix, monitor, encode or decode the audio signal after receiving the audio signal transmitted over a long distance; for example, when a splitter a and a splitter B are currently talking, if a splitter C calls the splitter a, a call prompt tone is generated, and the call prompt tone is a mixed tone and can be heard by a user of the splitter a; the host 52 may then transmit the processed audio signal through the transmit/receive circuit 522.
In addition, when receiving the audio signal, the host 52 may convert the audio signal into an audio monitor signal capable of long-distance transmission, and send the audio monitor signal to other split devices, where the other split devices may process and play the audio monitor signal after receiving the audio monitor signal.
In the embodiment, the split machine 51 is utilized to process the audio signal at the near end, so that noise reduction, echo cancellation and the like can be performed on the audio signal, the transmission of the audio signal is not limited, and the transmission distance of the audio signal can be prolonged; the host 52 is utilized to carry out post-processing on the audio signals at the far end, so that the audio functions are more perfect, the functions of multi-path mutual monitoring and the like are realized, one-to-one or one-to-many calls can be realized between at least two split machines 51, the realization is simple, the installation of the vehicle is more flexible, and the cost of the vehicle can be reduced due to the fact that one host 52 is provided with at least two split machines 51; in addition, because the audio signals share the control signal transmission line for transmission, the diameter of the wire rod is reduced, and the cost is reduced.
Referring to fig. 6, fig. 6 is a schematic structural diagram of an embodiment of a computer storage medium provided in the present application, where the computer storage medium 60 is used to store a computer program 61, and the computer program 61, when executed by a processor, is used to implement the signal transmission method in the above embodiment.
The computer storage medium 60 may be a server, a usb disk, a removable hard disk, a Read-Only Memory (ROM), a random access Memory (RAM, random Access Memory), a magnetic disk, or an optical disk, etc. various media capable of storing program codes.
In the several embodiments provided in the present application, it should be understood that the disclosed methods and apparatuses may be implemented in other manners. For example, the above-described device embodiments are merely illustrative, e.g., the division of modules or units is merely a logical functional division, and there may be additional divisions when actually implemented, e.g., multiple units or components may be combined or integrated into another system, or some features may be omitted or not performed.
The units described as separate units may or may not be physically separate, and units shown as units may or may not be physical units, may be located in one place, or may be distributed over a plurality of network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the embodiment.
In addition, each functional unit in each embodiment of the present application may be integrated into one processing unit, each unit may exist alone physically, or two or more units may be integrated into one unit. The integrated units may be implemented in hardware or in software functional units.
The foregoing is only examples of the present application, and is not intended to limit the scope of the patent application, and all equivalent structures or equivalent processes using the descriptions and the contents of the present application or other related technical fields are included in the scope of the patent application.
Claims (9)
1. A signal transmission system, comprising:
the split type data packet transmission device comprises at least two split type machines, at least one input signal is received by the split type machines, the input signal is processed to obtain a data packet to be transmitted, the split type machines comprise a first processor and a second processor which are connected with each other, the first processor is used for sampling the input signal to obtain a sampling signal, and noise reduction or echo elimination processing is carried out on the sampling signal to obtain a processed sampling signal; the second processor is used for carrying out packaging processing and signal conversion processing on the processed sampling signals to obtain the data packet to be transmitted;
the host is connected with each split machine and is used for processing the data packet to be transmitted to obtain an output signal, and outputting the output signal to other split machines and/or external equipment based on receiver information carried in the output signal so as to realize communication between at least two split machines or communication between the split machines and the external equipment;
the host comprises a third processor, and the third processor is connected with the split machine and is used for monitoring, encoding and decoding the data packets to be transmitted or mixing at least two data packets to be transmitted to obtain the output signal;
the third processor is connected with the second processor through a signal line, and the signal line is used for simultaneously transmitting an audio signal and a control signal.
2. The signal transmission system of claim 1, wherein the signal transmission system comprises a plurality of signal transmission devices,
the second processor is used for performing signal conversion processing on the processed sampling signals to obtain digital audio signals, and packaging the digital audio signals according to a preset protocol to generate the data packets to be transmitted.
3. The signal transmission system of claim 1, wherein the signal transmission system comprises a plurality of signal transmission devices,
the host computer also comprises a transmitting circuit which is connected with the third processor and used for transmitting signals output by the third processor to the other split computers and/or external equipment.
4. The signal transmission system of claim 1, wherein the signal transmission system comprises a plurality of signal transmission devices,
the host also comprises a receiving circuit, a third processor and a fourth processor, wherein the receiving circuit is used for receiving radio frequency signals sent by the other split machines and sending the radio frequency signals to the third processor; the third processor is further configured to process the radio frequency signal to obtain a monitoring signal, and send the monitoring signal to the split device, so that the split device plays the monitoring signal.
5. A signal transmission method applied to the signal transmission system according to any one of claims 1 to 4, the signal transmission system including a host and at least two split machines connected to the host, the method comprising:
the split machine receives at least one input signal and processes the input signal to obtain a data packet to be transmitted, wherein the split machine comprises a first processor and a second processor which are connected with each other, the first processor samples the input signal to obtain a sampling signal, and performs noise reduction or echo elimination processing on the sampling signal to obtain a processed sampling signal; the second processor performs packaging processing and signal conversion processing on the processed sampling signals to obtain the data packet to be transmitted;
the host processes the data packet to be transmitted to obtain an output signal, and outputs the output signal to other split machines and/or external equipment based on receiver information carried in the output signal so as to realize communication between at least two split machines or communication between the split machines and the external equipment.
6. The signal transmission method according to claim 5, wherein the step of performing the encapsulation processing and the signal conversion processing on the processed sampling signal to obtain the data packet to be transmitted includes:
and performing signal conversion processing on the processed sampling signals to obtain digital audio signals, and packaging the digital audio signals according to a preset protocol to generate the data packets to be transmitted.
7. The signal transmission method according to claim 6, wherein the step of processing the data packet to be transmitted to obtain an output signal, and outputting the output signal to other split machines and/or external devices based on receiver information carried in the output signal, comprises:
receiving radio frequency signals sent by the other split machines, and processing the radio frequency signals to obtain monitoring signals;
and sending the monitoring signal to the split machine so that the split machine plays the monitoring signal.
8. The signal transmission method according to claim 5, wherein the step of processing the data packet to be transmitted to obtain an output signal comprises:
and monitoring, encoding and decoding the data packets to be transmitted or mixing at least two data packets to be transmitted to obtain the output signal.
9. A computer storage medium storing a computer program, which, when executed by a processor, is adapted to carry out the signal transmission method of any one of claims 5-8.
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