WO2018227854A1

WO2018227854A1 - Speech talkback method and apparatus, and mobile terminal

Info

Publication number: WO2018227854A1
Application number: PCT/CN2017/109187
Authority: WO
Inventors: 张国滔; 郑勇; 魏科文; 卫特超; 郑培艺
Original assignee: 深圳市沃特沃德股份有限公司
Priority date: 2017-06-12
Filing date: 2017-11-02
Publication date: 2018-12-20
Also published as: CN107276659B; CN107276659A

Abstract

Disclosed are a speech talkback method and apparatus, and a mobile terminal. The method comprises the following steps: maintaining a long connection with a server by means of a satellite mobile communication network; carrying out compression processing on collected speech information by using a low-bit-rate speech encoding algorithm, and generating a first speech file; and sending the first speech file to the server so as to enable the server to send the first speech file to a receiving end. By means of carrying out compression processing on the collected speech information by using a low-bit-rate speech encoding algorithm, a code rate of speech information is greatly reduced, the capacity of the sent speech file is decreased, a bandwidth resource of a satellite mobile communication network is saved on, thus realizing a low-time delay and real-time talkback, solving the technical problem that a mobile terminal based on satellite mobile communications cannot use an instant communication application to realize a real-time speech talkback in the prior art, and improving the user experience.

Description

Voice intercom method, device and mobile terminal

Technical field

[0001] The present invention relates to the field of communications technologies, and in particular, to a voice intercom method, apparatus, and mobile terminal.

[0002] The use of geostationary orbit satellites or medium and low-orbit satellites as relay stations to achieve regional or global mobile communications is known as satellite mobile communications. It generally consists of three parts: a communication satellite, consisting of one or more satellites; a ground station, including a system control center and several gateway stations (ie, transit stations that connect the public switched telephone network to mobile users); mobile users Communication terminals, including onboard, shipboard, airborne terminals and handsets. The user can move freely within the coverage of the satellite beam, and the satellite transmits signals to maintain communication with terrestrial communication systems and dedicated system users or other mobile users.

[0003] Compared with other communication methods, satellite mobile communication has the advantages of large coverage area, long communication distance, flexible communication and maneuverability, and stable and reliable lines. Therefore, satellite mobile communication has become an important development direction of communication services.

[0004] With the rapid development of satellite mobile communication technologies, more and more mobile terminals support satellite mobile communication.

Like the public land mobile communication network, the satellite mobile communication network also supports the function of the TCP/IP link to access the Internet, so that the mobile terminal can communicate via the satellite mobile communication network. However, since the bandwidth of the satellite mobile communication network is narrow, it is impossible to implement an actual voice intercom using the instant communication application, thereby affecting the user experience.

technical problem

[0005] A primary object of the present invention is to provide a voice intercom method, apparatus, and mobile terminal, which are directed to solving a technical problem that a mobile terminal based on satellite mobile communication cannot implement a real voice intercom using an instant communication application.

Problem solution

Technical solution

[0006] In order to achieve the above objective, an embodiment of the present invention provides a voice intercom method, where the method includes the following steps. [0007] maintaining a long connection with the server through the satellite mobile communication network;

[0008] compressing the collected voice information by using a low-rate speech coding algorithm and generating a first voice file

Sending the first voice file to the server, so that the server sends the first voice file to the peer end.

[0010] Optionally, after the step of establishing a connection with the server and maintaining a long connection through the satellite mobile communication network, the method further includes:

[0011] acquiring, by the server, a second voice file sent by the peer end;

[0012] outputting the second voice file.

[0013] Optionally, the step of obtaining, by the server, the second voice file sent by the peer end includes:

[0014] receiving a download address of the second voice file sent by the server;

[0015] downloading the second voice file according to the download address.

[0016] Optionally, the step of outputting the second voice file includes:

[0017] determining whether the second voice file is a low rate voice encoded file;

[0018] When the file is a low rate speech code, the second speech file is decoded using a low rate speech decoding algorithm and played.

[0019] Optionally, the low-rate speech coding algorithm is an adaptive multi-rate AMR algorithm, a hybrid excitation linear predictive coding MELP algorithm, a code excitation linear predictive coding CELP algorithm, a sine transform coding STC algorithm, and a frequency domain interpolation coding TFI. Algorithm, pitch synchronization excitation linear prediction coding PSELP algorithm, multi-band excitation coding MBE algorithm or waveform interpolation coding WI algorithm.

[0020] Optionally, when the low-rate speech compression coding algorithm is an AMR algorithm, the step of compressing the collected voice information by using a low-rate speech compression coding algorithm and generating a voice file includes:

[0021] The collected voice information is compression-encoded by using the AMR algorithm to reduce the bit rate of the voice information to a preset value, and generate a voice file in an AMR format.

[0022] Optionally, the preset value is 6.6 kb/s.

[0023] Optionally, when the low-rate voice compression coding algorithm is an MELP algorithm, the step of compressing the collected voice information by using a low-rate voice compression coding algorithm and generating a voice file includes: [0024] The collected voice information is compression-encoded by using the MELP algorithm to reduce the code rate of the voice information to 2.4 kb/s, and generate a voice file in the MELP format.

[0025] Optionally, the step of sending the voice file to the server includes:

[0026] The voice file is transmitted to the server in a packet using a TCP/IP protocol.

[0027] The embodiment of the present invention provides a voice intercom device, and the device includes:

[0028] a connection module, configured to maintain a long connection with the server through the satellite mobile communication network;

[0029] a processing module, configured to compress the collected voice information by using a low-rate speech coding algorithm and generate a first voice file;

And a sending module, configured to send the first voice file to the server, so that the server sends the first voice file to the peer end.

[0031] Optionally, the device further includes:

[0032] an obtaining module, configured to acquire, from the server, a second voice file sent by the peer end;

[0033] an output module, configured to output the second voice file.

[0034] Optionally, the acquiring module includes:

[0035] a receiving unit, configured to receive a download address of the second voice file sent by the server;

[0036] a downloading unit, configured to download the second voice file according to the download address.

[0037] Optionally, the output module includes:

[0038] a determining unit, configured to determine whether the second voice file is a low-rate voice encoded file;

And a playing unit, configured to: when the file is a low-rate speech encoded file, play the second voice file by using a low-rate speech decoding algorithm.

[0040] Optionally, when the low-rate speech compression coding algorithm is an AMR algorithm, the processing module is used to

And compressing the collected voice information by using the AMR algorithm to reduce a bit rate of the voice information to a preset value, and generating a voice file in an AMR format.

[0041] Optionally, when the low-rate voice compression coding algorithm is a MELP algorithm, the processing module is used to

And compressing the collected voice information by using the MELP algorithm to reduce the bit rate of the voice information to 2.4 kb/s, and generating a voice file in the MELP format.

[0042] Optionally, the sending module is configured to: packet transmit the voice file to the server by using a TCP/IP protocol. The present invention also proposes a mobile terminal, the mobile terminal comprising a memory, a processor and at least one application stored in the memory and configured to be executed by the processor, characterized in that The application is configured to perform the aforementioned voice intercom method.

Advantageous effects of the invention

Beneficial effect

[0044] A voice intercom method provided by an embodiment of the present invention maintains a long connection with a server through a satellite mobile communication network, and compresses the collected voice information by using a low-rate speech coding algorithm, thereby greatly reducing voice information. The code rate reduces the capacity of the transmitted voice file, saves the bandwidth resources of the satellite mobile communication network, and realizes the low-end, short-talk, intercom, and solves the problem that the mobile terminal based on satellite mobile communication in the prior art cannot be utilized. The communication application realizes the technical problem of the voice intercom and improves the user experience.

Brief description of the drawing

DRAWINGS

1 is a flow chart of a first embodiment of a voice intercom method of the present invention;

2 is a flow chart of a second embodiment of a voice intercom method of the present invention;

3 is a block diagram showing a first embodiment of a voice intercom apparatus of the present invention;

4 is a block diagram showing a second embodiment of a voice intercom apparatus of the present invention;

5 is a block diagram of an acquisition module of the voice intercom device of FIG. 4;

6 is a block diagram of an output module of the voice intercom device of FIG. 4.

[0051] The implementation, functional features, and advantages of the present invention will be further described with reference to the accompanying drawings.

BEST MODE FOR CARRYING OUT THE INVENTION

The specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

The embodiments of the present invention are described in detail below, and the examples of the embodiments are illustrated in the drawings, wherein the same or similar reference numerals are used to refer to the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the drawings are illustrative and are merely illustrative of the invention and are not construed as Limitations of the invention.

The singular forms "a", "the", "the" and "the" It will be further understood that the phrase "comprising", used in the <RTI ID=0.0> </ RTI> <RTIgt; </ RTI> <RTIgt; </ RTI> <RTIgt; </ RTI> is intended to mean the presence of the features, integers, steps, operations, components and/or components, but does not exclude the presence or addition of one or more other features, Integers, steps, operations, components, components, and/or their groups. It will be understood that when we refer to an element being "connected" or "coupled" to another element, it can be directly connected or coupled to the other element, or an intermediate element can be present. Further, "connected" or "coupled" as used herein may include either a wireless connection or a wireless coupling. The phrase "and/or" used herein includes all or any of the elements and all combinations of one or more of the associated listed.

[0055] Those skilled in the art will appreciate that all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs, unless otherwise defined. It should also be understood that terms such as those defined in a general dictionary should be understood to have meaning consistent with the meaning in the context of the prior art, and will not be idealized or excessive unless specifically defined as here. The formal meaning is explained.

[0056] Those skilled in the art can understand that the "terminal" and "terminal device" used herein include both a device of a wireless signal receiver, a device having only a wireless signal receiver without a transmitting capability, and a receiving and receiving device. A device that transmits hardware having a receiving and transmitting hardware capable of performing two-way communication over a two-way communication link. Such a device may comprise: a cellular or other communication device having a single line display or a multi-line display or a cellular or other communication device without a multi-line display; PCS (Persona 1 Communications Service), which may combine voice, Data processing, fax and/or data communication capabilities; PDA (Personal Digital Assistant), which can include radio frequency receivers, pagers, Internet/Intranet access, web browsers, notepads, calendars and/or GPS ( Global Positioning System, Receiver; Conventional laptop and/or palmtop computer or other device having a conventional laptop and/or palmtop computer or other device that includes and/or includes a radio frequency receiver. As used herein, "terminal", "terminal device" may be portable, transportable, installed in a vehicle (aviation, sea and/or land), or adapted and/or configured to operate locally, and/or Run in any other location on the Earth and/or space in a distributed fashion. The "terminal" and "terminal device" used herein may also be a communication terminal, an internet terminal, a music/video playback terminal, For example, it may be a PDA, a MID (Mobile Internet Device), and/or a mobile phone with music/video playback function, or a smart TV, a set top box, or the like.

[0057] Those skilled in the art can understand that the server used herein includes, but is not limited to, a computer, a network host, a single network server, a plurality of network server sets, or a cloud composed of a plurality of servers. Here, the cloud consists of a large number of computers or network servers based on Cloud Computing, which is a kind of distributed computing, a super virtual computer composed of a group of loosely coupled computers. In the embodiment of the present invention, communication may be implemented by any communication means between the server, the terminal device and the WNS server, including but not limited to, mobile communication based on 3GPP, LTE, WIMAX, and computer network communication based on TCP/IP and UDP protocols. And short-range wireless transmission based on Bluetooth and infrared transmission standards.

Referring to FIG. 1, a first embodiment of a voice intercom method of the present invention is proposed. The method includes the following steps: [0059] Sl l, maintaining a long connection with a server through a satellite mobile communication network.

[0060] In this step S11, after the mobile terminal establishes a connection with the server through the satellite mobile communication network, the mobile terminal maintains a long connection with the server with a certain heartbeat period, that is, the mobile terminal sends a heartbeat packet to the server every other heartbeat period, thereby The connection path between the two is maintained, so that the subsequent voice packets are delayed and transmitted.

[0061] Optionally, the mobile terminal may maintain a long connection with the server in a preset heartbeat period.

[0062] Optionally, the mobile terminal may adaptively adjust the heartbeat period according to the reference heartbeat period and the signal quality of the satellite mobile communication network, acquire an adaptive heartbeat period with a large period and maintain a stable connection, and adopt an adaptive heartbeat The cycle maintains a long connection with the server. The reference heartbeat period may be a preset heartbeat period, a heartbeat period used by the last connection, a heartbeat period used by other mobile communication networks (such as the public land mobile communication network), and the like.

[0063] For example, the mobile terminal first performs a long connection test with a reference heartbeat period. When the reference heartbeat period can maintain a long connection, the length of the reference heartbeat period is increased to perform a long connection test to obtain an adaptive heartbeat period capable of maintaining a long connection, for example: increasing the length of the reference based on the reference heartbeat period Long connection test until the long connection cannot be maintained; When the long connection is not maintained, the heartbeat period of the previous test is selected as the adaptive heartbeat period. When the reference heartbeat period cannot maintain a long connection, the long connection test is performed on the basis of the reference heartbeat period to obtain a long connection test. The adaptive heartbeat period, for example: based on the reference heartbeat period, successively reduces the length of the long connection test until the long connection can be maintained; when the long connection is maintained, the heartbeat period of the test is selected as the adaptive heartbeat period. Finally, the mobile terminal maintains a long connection with the server in an adaptive heartbeat cycle.

In the embodiment of the present invention, the mobile terminal may be a satellite mobile communication terminal supporting only satellite mobile communication, or a fusion terminal supporting both satellite mobile communication and public land mobile communication for satellite mobile communication and public land mobile communication.

[0065] S12. Process the collected voice information by using a low-rate speech coding algorithm and generate a first voice file.

In the embodiment of the present invention, the mobile terminal can perform voice intercom with other terminals through a short communication service such as WeChat, E-mail, and QQ, and the other terminals are the opposite ends of the mobile terminal. When the mobile terminal sends a voice file to the opposite end, the mobile terminal is the transmitting end, and the opposite end is the receiving end; when the mobile terminal receives the voice file sent by the opposite end, the mobile terminal is the receiving end, and the opposite end is the transmitting end. .

[0067] When the mobile terminal is used as the transmitting end, the voice information is collected through the microphone, and the collected voice information is processed by using a low-rate voice encoding algorithm to generate a first voice file.

[0068] Optionally, the mobile terminal collects voice information, and the application processor collects voice information by using an 8-bit ADC and a sampling frequency of 8 k, and digitally records the collected voice information. The code rate of the collected voice information is 64 kb/s.

[0069] The low rate speech coding algorithm may be an adaptive multi-rate (AMR) algorithm, a mixed excitation linear predictive coding (MELP) algorithm, a code excited linear predictive coding (CELP) algorithm, a sinusoidal transform coding (STC) algorithm, a chirp frequency domain. Any of the speech coding algorithms such as the Interpolation Coding (TFI) algorithm, the Pitch Synchronous Linear Predictive Coding (PSELP) algorithm, the Multi-Band Excitation Coding (MBE) algorithm, and the Waveform Interpolation Coding (WI) algorithm.

For example, taking the AMR algorithm as an example, the mobile terminal uses the AMR algorithm to compress and encode the collected voice information, so as to reduce the code rate of the voice information to a preset value, and generate a voice file in the AMR format. The AMR can use nine codes from 6.6 kb/s to 23.85 kb/s, and the preset value is preferably a minimum code rate of 6.6 kb/s. Thereby, the code rate of the voice information is greatly reduced, the capacity of the voice file is reduced, the bandwidth resource of the satellite mobile communication network is saved, and the low-definition and short-talking intercom is realized. For example, taking the MELP algorithm as an example, the mobile terminal uses the MELP algorithm to compress and encode the collected voice information to reduce the bit rate of the voice information to 2.4 kb/s, and generate a voice file in the MELP format. Thereby, the code rate of the voice information is greatly reduced, the capacity of the voice file is reduced, the bandwidth resource of the satellite mobile communication network is saved, and the low-definition and short-talking intercom is realized.

[0072] S13. Send a first voice file to the server, so that the server sends the first voice file to the peer end.

[0073] In the embodiment of the present invention, the satellite communication modem of the mobile terminal establishes communication with the server through a socket, and the mobile terminal preferably adopts a Transmission Control Protocol/Internet Protocol (T CP/IP) protocol. The package transmits voice files to the server. That is, the mobile terminal divides the first voice file into a plurality of voice packets, and sequentially transmits the plurality of voice packets to the server in sequence. After receiving the voice packets, the server stores the voice packets in the cache according to the start identifier and the end identifier of the voice packet to form a voice file, that is, restores the first voice file.

[0074] Each voice packet is a TCP/IP protocol packet, and the components of the TCP/IP protocol packet are as follows:

[0075] I...one head one... μ...body length one-1 body 1

[0076] The mobile terminal and the server may agree on the definition of the packet header (such as setting different identifiers), and the server parses the packet header of the TCP/IP protocol packet to distinguish whether the network transmitting the voice file is a satellite mobile communication network or a public land mobile. The communication network, that is, distinguishes whether the voice file sent by the sender is a low rate voice code file or a normal voice code file.

[0077] The server may adopt a software architecture that supports concurrent access of multiple clients, such as MINA, Erlang, etc.

, Support multi-user high concurrent access to the server. For example, with a multi-threading mechanism, one thread is used to listen for client requests, and multiple threads are used to handle multiple concurrent requests.

[0078] The specific process on the server side is: creating a server-side object to generate a listening thread, starting port listening, and accepting a client connection request, when a client connection is up, creating a client object to generate a new thread. Send data to the client, create a data stream transfer object, start data snooping, and when receiving data, determine the data length. When the data length is 0吋, it is determined that the connection has been broken, and the client object and the useless thread are deleted; when the data length is not 0吋, the data is processed.

[0079] After receiving the first voice file, the server may send the voice file to the receiving end in the following two ways: One is to send the download address of the first voice file to the receiving end, so that the receiving end directly downloads according to the download address. The first voice file; the other is to use the TCP/IP protocol to sub-packet the first voice file to the next Received.

[0080] If the receiving end accesses the satellite mobile communication network, the downloading method is preferred, and the delay can be reduced. If the receiving end accesses the public land mobile communication network, both methods are available.

The voice intercom method of the embodiment of the present invention maintains a long connection with the server through the satellite mobile communication network, and compresses the collected voice information by using a low-rate speech coding algorithm, thereby greatly reducing the bit rate of the voice information. The capacity of the transmitted voice file is reduced, the bandwidth resource of the satellite mobile communication network is saved, and the low-definition and short-talking intercom is realized, and the mobile terminal based on the satellite mobile communication in the prior art cannot be solved by using the instant communication application. The technical problems of the actual voice intercom have improved the user experience.

[0082] Further, as shown in FIG. 2, in the second embodiment of the voice intercom method of the present invention, when the mobile terminal is the receiving end, step S11 further includes:

[0083] S14. Acquire a second voice file sent by the peer end from the server.

In the embodiment of the present invention, the server preferably sends the download address of the second voice file to the mobile terminal, the mobile terminal receives the download address sent by the server, and downloads the second voice file according to the download address. By obtaining the second voice file in the download mode, the delay of the voice intercom can be reduced, and the user experience is improved.

[0085] In other embodiments, the server may also use the TCP/IP protocol to packetize and transmit the second voice file to the mobile terminal, that is, the server divides the second voice file into multiple voice packets, and sequentially sequentially multiple voice packets. Send to the mobile terminal. After receiving the voice packets, the mobile terminal stores the voice packets in the cache according to the start identifier and the end identifier of the voice packet to form a voice file, that is, restores the second voice file.

[0086] S15. Output a second voice file.

In the embodiment of the present invention, after receiving the second voice file, the mobile terminal first determines whether the second voice file is a low-rate voice code file; when the voice code file is a low-rate voice code file, the mobile terminal uses the low-rate voice decoder. The low-rate speech decoding algorithm decodes the second speech file and plays it; when it is a normal speech-encoded file, the second speech file is decoded by the wide-band speech decoder and then played.

[0088] The mobile terminal may determine whether it is a low-rate voice encoded file by using the identifier information of the second voice file, and the identifier information may be set in a packet header of the voice packet of the second voice file. [0089] For example, when the identification information of the second voice file is the first identifier, the second voice file is determined to be a low-rate voice encoded file; and when the identifier information of the second voice file is the second identifier, determining the second The voice file is a normal voice encoded file.

[0090] For example, when the identification information of the second voice file is the first identifier, determining that the second voice file is a low-rate voice encoded file; when the identifier information of the second voice file is empty (ie, no identifier), It is determined that the second voice file is a normal voice encoded file. Or, vice versa.

[0091] The voice intercom method of the embodiment obtains the second voice file by using the download mode, which reduces the delay of the voice intercom and improves the user experience. By using the low-rate speech decoding algorithm to decode the second speech file, a voice intercom is performed with the mobile terminal accessing the satellite mobile communication network.

[0092] In the embodiment of the present invention, a mobile terminal accessing a satellite mobile communication network can perform voice intercommunication with other mobile terminals accessing the satellite mobile communication network, and can also access other mobiles of the public land mobile communication network. The terminal performs voice intercom.

Referring to FIG. 3, a first embodiment of a voice intercom apparatus of the present invention is proposed, and the apparatus is applied to a mobile terminal.

Of course, the device can also be applied to other terminal devices, and the device includes a connection module 10, a processing module 20, and a sending module 30, where:

[0094] Connection module 10: for maintaining a long connection with the server via the satellite mobile communication network.

In the embodiment of the present invention, after the connection module 10 establishes a connection with the server through the satellite mobile communication network, the connection module 10 maintains a long connection with the server with a certain heartbeat period, that is, the connection module 10 sends a heartbeat packet to the server every other heartbeat period. In order to maintain the connection path between the two, the low-speed transmission and subsequent transmission of the subsequent voice packets are realized.

[0096] Optionally, the connection module 10 may maintain a long connection with the server in a preset heartbeat period.

[0097] Optionally, the connection module 10 can adaptively adjust the heartbeat period according to the reference heartbeat period and the signal quality of the satellite mobile communication network, and acquire an adaptive heartbeat period with a large period and maintaining a stable connection, and adaptively The heartbeat cycle stays connected to the server. The reference heartbeat period may be a preset heartbeat period, a heartbeat period used by the last connection, a heartbeat period used by other mobile communication networks (such as a public land mobile communication network), and the like.

[0098] For example, the connection module 10 first performs a long connection test with a reference heartbeat cycle. When the reference heartbeat period can maintain a long connection, the length of the reference heartbeat period is increased to perform a long connection test. An adaptive heartbeat period capable of maintaining a long connection, for example: increasing the length of the long connection test on the basis of the reference heartbeat period until the long connection cannot be maintained; when the long connection cannot be maintained, the heartbeat period of the previous test is selected as Adaptive heartbeat cycle. When the reference heartbeat period cannot maintain a long connection, the long connection test is performed on the basis of the reference heartbeat period to obtain an adaptive heartbeat period capable of maintaining a long connection, for example, the length of the reference is continuously reduced based on the reference heartbeat period. Long connection test until long connection can be maintained; When long connection is maintained, the heartbeat period of this test is selected as the adaptive heartbeat period. Finally, the connection module 10 maintains a long connection with the server in an adaptive heartbeat cycle.

[0100] The processing module 20 is configured to perform compression processing on the collected voice information by using a low-rate voice coding algorithm and generate a first voice file.

In the embodiment of the present invention, the voice intercom device can perform voice intercom with other terminals through a short communication service such as WeChat, E-mail, and QQ, and the other terminals are the opposite ends of the mobile terminal. When the mobile terminal sends a voice file to the opposite end, the mobile terminal is the transmitting end, and the opposite end is the receiving end; when the mobile terminal receives the voice file sent by the opposite end, the mobile terminal is the receiving end, and the opposite end is the transmitting end. .

[0102] When the mobile terminal is used as the transmitting end, the processing module 20 collects the voice information through the microphone, and processes the collected voice information by using a low-rate voice encoding algorithm to generate a first voice file.

[0103] Optionally, the processing module 20 collects voice information, and uses the 8-bit ADC and the 8K sampling frequency to collect voice information, and digitally records the collected voice information. The code rate of the collected voice information is 64 kb/s.

[0104] The low-rate speech coding algorithm may be an adaptive multi-rate (AMR) algorithm, a mixed excitation linear predictive coding (MELP) algorithm, a code excited linear predictive coding (CELP) algorithm, a sinusoidal transform coding (STC) algorithm, and a frequency domain. Any of the speech coding algorithms such as the Interpolation Coding (TFI) algorithm, the Pitch Synchronous Linear Predictive Coding (PSELP) algorithm, the Multi-Band Excitation Coding (MBE) algorithm, and the Waveform Interpolation Coding (WI) algorithm.

[0105] For example, taking the AMR algorithm as an example, the processing module 20 uses the AMR algorithm to compress the collected voice information. Reduce encoding to reduce the bit rate of voice information to a preset value, and generate a voice file in AMR format. The AMR can use nine codes from 6.6 kb/s to 23.85 kb/s, and the preset value is preferably a minimum code rate of 6.6 kb/s. Thereby, the code rate of the voice information is greatly reduced, the capacity of the voice file is reduced, the bandwidth resource of the satellite mobile communication network is saved, and the low-definition and short-talking intercom is realized.

For example, taking the MELP algorithm as an example, the processing module 20 uses the MELP algorithm to compress and encode the collected voice information to reduce the bit rate of the voice information to 2.4 kb/s, and generate a voice file in the MELP format. Therefore, the bit rate of the voice information is greatly reduced, the capacity of the voice file is reduced, the bandwidth resource of the satellite mobile communication network is saved, and the low-end, short-talking intercom is realized.

[0107] The sending module 30 is configured to send the first voice file to the server, so that the server sends the first voice file to the peer end.

[0108] In the embodiment of the present invention, the sending module 30 preferably uses a TCP/IP protocol to packetize and transmit voice files to the server.

. That is, the transmitting module 30 divides the first voice file into a plurality of voice packets, and sequentially transmits the plurality of voice packets to the server in sequence. After receiving the voice packets, the server stores the voice packets in the cache according to the start identifier and the end identifier of the voice packet to form a voice file, that is, the first voice file is restored.

[0109] Each voice packet is a TCP/IP protocol packet, and the components of the TCP/IP protocol packet are as follows:

[0110] I... a baotou --- μ...body length - I package 1

[0111] The sending module 30 and the server may agree on the definition of the packet header (such as setting different identifiers), and the server parses the packet header of the TCP/IP protocol packet to distinguish whether the network transmitting the voice file is a satellite mobile communication network or a public land. The mobile communication network, that is, distinguishes whether the voice file sent by the sender is a low rate voice code file or a normal voice code file.

[0112] The voice intercom device in the embodiment of the present invention maintains a long connection with the server through the satellite mobile communication network, and compresses the collected voice information by using a low-rate speech coding algorithm, thereby greatly reducing the bit rate of the voice information. The capacity of the transmitted voice file is reduced, the bandwidth resource of the satellite mobile communication network is saved, and the low-definition and short-talking intercom is realized, and the mobile terminal based on the satellite mobile communication in the prior art cannot be solved by using the instant communication application. The technical problems of the actual voice intercom have improved the user experience.

[0113] Further, as shown in FIG. 4, in the second embodiment of the voice intercom apparatus of the present invention, the apparatus further includes The obtaining module 40 is configured to acquire the second voice file sent by the peer end, and the output module 50 is configured to output the second voice file.

[0114] In the embodiment of the present invention, the server preferably sends the download address of the second voice file to the mobile terminal. As shown in FIG. 5, the obtaining module 40 includes a receiving unit 41 and a downloading unit 42. The receiving unit 41 is configured to receive a download address of the second voice file sent by the server, and the downloading unit 42 is configured to download the second voice according to the download address. file.

[0115] In other embodiments, the server may also use the TCP/IP protocol to packetize and transmit the second voice file to the mobile terminal, that is, the server divides the second voice file into multiple voice packets, and sequentially sequentially multiple voice packets. Send to the mobile terminal. The obtaining module 40 receives the plurality of voice packets, and stores the voice packets in the cache according to the start identifier and the end identifier of the voice packet to form a voice file, that is, restores the second voice file.

As shown in FIG. 6, the output module 50 includes a determining unit 51 and a playing unit 52, wherein: the determining unit 51 is configured to determine whether the second voice file is a low-rate voice encoded file; and the playing unit 52 is configured to use the second voice. The file is a low-rate speech encoded file, and the second speech file is decoded by a low-rate speech decoder using a low-rate speech decoding algorithm; when the second speech file is a normal speech-encoded file, the broadband speech decoder is used. The second voice file is decoded and played.

[0117] The determining unit 51 may determine whether it is a low-rate voice encoding file by using the identification information of the second voice file, and the identifier information may be set in the packet header of the voice packet of the second voice file.

[0118] For example, when the identification information of the second voice file is the first identifier, the determining unit 51 determines that the second voice file is a low-rate voice encoded file; and when the identifier information of the second voice file is the second identifier, determining Unit 51 determines that the second voice file is a normal voice encoded file.

[0119] For example, when the identification information of the second voice file is the first identifier, the determining unit 51 determines that the second voice file is a low-rate voice encoded file; when the identifier information of the second voice file is empty (ie, there is no identifier)吋, the determining unit 51 determines that the second voice file is a normal voice encoded file. Or, vice versa.

[0120] The voice intercom device of the embodiment obtains the second voice file by using the download mode, which reduces the delay of the voice intercom and improves the user experience. By using the low-rate speech decoding algorithm to decode the second speech file, a voice intercom is performed with the mobile terminal accessing the satellite mobile communication network.

[0121] The present invention also proposes a mobile terminal, where the mobile terminal includes a memory, a processor, and at least one An application stored in the memory and configured to be executed by the processor, the application being configured to execute a voice intercom method. The voice intercom method includes the following steps: maintaining a long connection with a server through a satellite mobile communication network; compressing the collected voice information by using a low rate speech coding algorithm to generate a first voice file; and transmitting the first message to the server a voice file, such that the server sends the first voice file to the receiving end. The voice intercom method described in this embodiment is the voice intercom method involved in the foregoing embodiment of the present invention, and details are not described herein again.

[0122] Those skilled in the art will appreciate that the present invention includes apparatus related to performing one or more of the operations described herein. These devices may be specially designed and manufactured for the required purposes, or may also include known devices in a general purpose computer. These devices have computer programs stored therein that are selectively activated or reconfigured. Such computer programs may be stored in a device (eg, computer) readable medium or in any type of medium suitable for storing electronic instructions and respectively coupled to a bus, including but not limited to any Types of disks (including floppy disks, hard disks, CDs, CD-ROMs, and magneto-optical disks), ROM (Read-Only Memory), RAM (Random Access Memory), EPROM (Erasable Programmable Read-Only)

Memory, EEPROM (Electrically Erasable Programmable Read-Only Memory), flash memory, magnetic card or light card. That is, a readable medium includes any medium that is stored or transmitted by a device (e.g., a computer) in a readable form.

[0123] Those skilled in the art will appreciate that each block of the block diagrams and/or block diagrams and/or flow diagrams can be implemented by computer program instructions, as well as in the block diagrams and/or block diagrams and/or flow diagrams. The combination of boxes. Those skilled in the art will appreciate that these computer program instructions can be implemented by a general purpose computer, a professional computer, or a processor of other programmable data processing methods, such that the processor is executed by a computer or other programmable data processing method. The block diagrams and/or block diagrams of the invention and/or the schemes specified in the blocks or blocks of the flow diagram are invented.

[0124] Those skilled in the art can understand that the various operations, methods, and steps, measures, and solutions in the present invention may be alternated, changed, combined, or deleted. Further, various operations, methods, and other steps, measures, and solutions in the process that have been discussed in the present invention may also be Alternate, change, rearrange, decompose, combine, or delete. Further, the steps, measures, and solutions in the various operations, methods, and processes in the prior art may be alternated, changed, rearranged, decomposed, combined, or deleted.

The above description is only the preferred embodiment of the present invention, and is not intended to limit the scope of the invention, and the equivalent structure or equivalent flow transformation made by the specification and the drawings of the present invention may be directly or indirectly applied to other related The technical field is equally included in the scope of patent protection of the present invention.

Claims

Claim

[Claim 1] A voice intercom method, comprising the steps of:

Maintaining a long connection to the server via a satellite mobile communication network;

Using the low-rate speech coding algorithm to compress the collected speech information and generate a first speech file;

[Claim 2] The voice intercom method according to claim 1, wherein the step of establishing a connection with the server and maintaining a long connection through the satellite mobile communication network further comprises: obtaining a peer transmission from the server Second voice file;

The second voice file is output.

[Claim 3] The voice intercom method according to claim 2, wherein the step of acquiring the second voice file sent by the peer from the server comprises:

Receiving a download address of the second voice file sent by the server;

Downloading the second voice file according to the download address.

[Claim 4] The voice intercom method according to claim 2, wherein the step of outputting the second voice file comprises:

Determining whether the second voice file is a low rate voice code file;

When the speech file is a low rate speech code, the second speech file is decoded using a low rate speech decoding algorithm and played.

[Claim 5] The voice intercom method according to claim 1, wherein the low rate speech coding algorithm is an adaptive multi-rate AMR algorithm, a hybrid excitation linear prediction coding MELP algorithm, and a code excitation linear prediction coding CELP. Algorithm, sinusoidal transform coding STC algorithm, chirp frequency domain interpolation coding TFI algorithm, pitch synchronization excitation linear prediction coding PSELP algorithm, multi-band excitation coding MBE algorithm or waveform interpolation coding WI algorithm.

[Claim 6] The voice intercom method according to claim 5, wherein when the low rate speech compression coding algorithm is an AMR algorithm, the low rate speech compression coding algorithm is used to perform the collected speech information. The steps of compressing and generating a voice file include: The collected voice information is compression-encoded by using the AMR algorithm to reduce the code rate of the voice information to a preset value, and generate a voice file in the AMR format.

The voice intercom method according to claim 6, wherein the preset value is 6.6 kb/s.

The voice intercom method according to claim 5, wherein when the low rate speech compression coding algorithm is an MELP algorithm, the low-rate speech compression coding algorithm compresses the collected speech information and generates a speech. The step of the file includes: compressing and encoding the collected voice information by using the MELP algorithm to reduce the bit rate of the voice information to 2.4 kb/s, and generating a voice file in the MELP format.

The voice intercom method according to claim 1, wherein the step of transmitting the voice file to the server comprises:

The voice file is transmitted to the server in a packet using a TCP/IP protocol.

A voice intercom device, comprising:

a connection module, configured to maintain a long connection with the server through the satellite mobile communication network; and a processing module, configured to compress the collected voice information by using a low-rate voice coding algorithm and generate a first voice file;

The voice intercom apparatus according to claim 10, wherein the apparatus further comprises: an acquisition module, configured to acquire a second voice file sent by the peer end from the server; and an output module, configured to output the second voice file Voice file.

The voice intercom apparatus according to claim 11, wherein the acquisition module comprises:

a receiving unit, configured to receive a download address downloading unit of the second voice file sent by the server, to download the second voice file according to the download address.

The voice intercom device according to claim 11, wherein said output module package Includes:

a determining unit, configured to determine whether the second voice file is a low-rate voice encoding file, and a playing unit, configured to: after the low-rate voice encoding file, decode the second voice file by using a low-rate voice decoding algorithm Play it.

The voice intercom device according to claim 10, wherein the low rate speech coding algorithm is an adaptive multi-rate AMR algorithm, a hybrid excitation linear predictive coding MELP algorithm, a code excited linear predictive coding CELP algorithm, and a sinusoidal transform coding. STC algorithm, 吋 frequency domain interpolation coding TFI algorithm, pitch synchronization excitation linear prediction coding PSELP algorithm, multi-band excitation coding MBE algorithm or waveform interpolation coding WI algorithm.

The voice intercom apparatus according to claim 14, wherein when the low rate speech compression coding algorithm is an AMR algorithm, the processing module is configured to:

The collected voice information is compression-encoded by the AMR algorithm to reduce the bit rate of the voice information to a preset value, and generate a voice file in the AMR format.

The voice intercom device according to claim 15, wherein the preset value is 6.

6kb/s.

The voice intercom apparatus according to claim 14, wherein when the low rate voice compression coding algorithm is a MELP algorithm, the processing module is configured to:

The collected voice information is compression-coded by the MELP algorithm to reduce the bit rate of the voice information to 2.4 kb/s, and generate a voice file in the MELP format.

The voice intercom apparatus according to claim 10, wherein the transmitting module is configured to: packet transmit the voice file to the server by using a TCP/IP protocol.

A mobile terminal comprising a memory, a processor and at least one application stored in the memory and configured to be executed by the processor, wherein the application is configured to execute the claims The voice intercom method described in 1.