CN101984622B - Real-time transport protocol based bidirectional voice frequency mapping method - Google Patents
Real-time transport protocol based bidirectional voice frequency mapping method Download PDFInfo
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- CN101984622B CN101984622B CN 201010526952 CN201010526952A CN101984622B CN 101984622 B CN101984622 B CN 101984622B CN 201010526952 CN201010526952 CN 201010526952 CN 201010526952 A CN201010526952 A CN 201010526952A CN 101984622 B CN101984622 B CN 101984622B
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Abstract
The invention provides a real-time transport protocol based bidirectional voice frequency mapping method. When a server requires to access the voice frequency data of a client or the client plays the voice frequency data read out by the server, the voice frequency data is transmitted in the manner of bidirectional mapping of a client voice frequency mapping service of the client and a server voice frequency mapping service. The invention also provides a real-time transport protocol based bidirectional voice frequency mapping system, which realizes mapping the voice frequency data of the client to a remote server through a real-time transport protocol, therefore sending high-quality low delay voice frequency data to the server.
Description
[technical field]
The present invention relates to the voice data transfer scheme, relate in particular to a kind of two way audio mapping method based on RTP.
[background technology]
Along with the develop rapidly of digital multimedia, computer, interference networks and mobile network's technology, the audio frequency of movement-based network and interference networks, the application of video monitoring are more and more extensive, and its effect is also more and more great.
Under Windows Terminal Service and virtual desktop environment, the application program of server end is the voice data of access client directly, needs to use the device map technology that the voice data of client is mapped to remote server.The current audio mapping techniques all is based on virtual desktop agreement separately, and this a kind of implementation has following shortcoming:
1) in the virtual desktop agreement, not only transmits voice data, and transmit other data such as image, re-positioning device, can't guarantee that voice data preferentially sends.
2) voice data is encapsulated in the virtual desktop agreement, and router can't provide Qos(service quality for it), can't guarantee service quality.
3) most of virtual desktop agreement such as RDP and ICA(computer network with standard network protocol) bottom all is based on Transmission Control Protocol, the real-time of the re-transmission of Transmission Control Protocol, overtime retry and back off algorithm meeting heavy damage voice data, therefore audio delay is larger, and can't guarantee continuity.
[summary of the invention]
One of the technical problem to be solved in the present invention is to provide a kind of two way audio mapping method based on RTP, has overcome in the background technology, can't guarantee that voice data preferentially sends, guarantees service quality and the problem of the quality of voice data.
The above-mentioned technical problem of the present invention is achieved in that the two way audio mapping method based on RTP, and it may further comprise the steps:
Step 10, when server is wanted the voice data of access client, application program in the server loads the virtual sound card driver, and audio data format is set, send request voice data information to the virtual sound card driver, the service end audio frequency mapping service in the virtual sound card driver announcement server starts audio recording;
Step 20, server are connected with client computer by RTP, and the mapping of the client audio frequency in customer in response machine service startup audio recording, and the voice data of client sound card is read in client audio frequency mapping service;
Step 30, client audio frequency mapping service return to server with the voice data that reads by RTP.
The present invention has following advantage: when server wants the voice data of access client or client computer to play the voice data that reads from server, client audio frequency mapping service and service end audio frequency by client computer shine upon the transmission that voice data is finished in the two-way mapping of serving, thereby server can obtain the voice data of high-quality, low delay.【
Description of drawings]
Fig. 1 is principle of the invention framework schematic diagram.
Fig. 2 is the inventive method flow chart.
[embodiment]
The present invention is further illustrated in conjunction with the embodiments below with reference to Fig. 1, Fig. 2.
As shown in Figure 1, bidirectional voice frequency mapping system based on RTP, comprise the client computer that client audio frequency mapping service is installed and the server that service end audio frequency mapping service is installed, described client computer is connected with described server by RTP, and described server is interior with the virtual sound card driver.
Wherein client computer is equipped with client audio frequency mapping service, client computer is also with the client sound card, server is equipped with service end audio frequency mapping service, server also has with virtual sound card driver and server-side application, RTP: for voice data provides the service of the end-to-end transfer with real-time characteristic.
Client sound card in the client computer is: the physics sound card.
Client audio frequency mapping service has audio recording and audio playing function, audio recording: read voice data from the client sound card, voice data is sent to server by RTP.Audio frequency is play: obtain voice data by RTP from server, voice data is write the client sound card.
Server-side application: the application program of audio recording and broadcast.
Virtual sound card driver: be that service end audio frequency mapping service versus server end application program is carried out the bridge that data transmit.When audio recording is carried out in service end audio frequency mapping service, from service end audio frequency mapping service acquisition voice data, send voice data to server-side application.When the audio frequency broadcast is carried out in service end audio frequency mapping service: obtain voice data from server-side application, send voice data to service end audio frequency mapping service.
Service end audio frequency mapping service has audio recording and audio playing function, audio recording: obtain voice data by RTP, voice data is write the virtual sound card driver.Audio frequency is play: read voice data from the virtual sound card driver, voice data is sent to client computer by RTP.
As shown in Figure 2, the invention will be further described below in conjunction with the two way audio mapping method based on RTP, and its step is as follows:
Step 10, when server is wanted the voice data of access client, application program in the server loads the virtual sound card driver, and audio data format is set, send request voice data information to the virtual sound card driver, the service end audio frequency mapping service in the virtual sound card driver announcement server starts audio recording;
Step 20, server are connected with client computer by RTP, and the mapping of the client audio frequency in customer in response machine service startup audio recording, and the voice data of client sound card is read in client audio frequency mapping service;
Step 30, client audio frequency mapping service return to server with the voice data that reads by RTP.
When client computer will be play the voice data that reads from server, the virtual sound card driver obtains voice data from server-side application, and notification service end audio frequency mapping service starts the audio frequency broadcast, server sends to client audio frequency mapping service by RTP with voice data, client audio frequency mapping service starts audio frequency plays, and this moment, client audio frequency mapping service was by client sound card playing audio-fequency data.
In a word, the present invention has realized that remote server and client computer carry out two way audio mapping, and when the voice data of client was mapped to remote server by RTP, server can obtain the voice data of high-quality, low delay
The above only is preferred embodiment of the present invention, and all equalizations of doing according to the present patent application claim change and modify, and all should belong to covering scope of the present invention.
Claims (2)
1. based on the two way audio mapping method of RTP, it is characterized in that: may further comprise the steps:
Step 10, when server is wanted the voice data of access client, application program in the server loads the virtual sound card driver, and audio data format is set, send request voice data information to the virtual sound card driver, the service end audio frequency mapping service in the virtual sound card driver announcement server starts audio recording;
Step 20, server are connected with client computer by RTP, and the mapping of the client audio frequency in customer in response machine service startup audio recording, and the voice data of client sound card is read in client audio frequency mapping service;
Step 30, client audio frequency mapping service return to server with the voice data that reads by RTP.
2. the two way audio mapping method based on RTP according to claim 1, it is characterized in that: when client computer is play the voice data that reads from server, the virtual sound card driver sends voice data, and notification service end audio frequency mapping service starts the audio frequency broadcast, server sends to client audio frequency mapping service by RTP with voice data, client audio frequency mapping service starts audio frequency plays, and this moment, client audio frequency mapping service was by client sound card playing audio-fequency data.
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| CN 201010526952 CN101984622B (en) | 2010-11-01 | 2010-11-01 | Real-time transport protocol based bidirectional voice frequency mapping method |
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| CN 201010526952 CN101984622B (en) | 2010-11-01 | 2010-11-01 | Real-time transport protocol based bidirectional voice frequency mapping method |
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| CN104410664A (en) * | 2014-10-27 | 2015-03-11 | 深圳市京华科讯科技有限公司 | Full-duplex audio transmission system and method based on virtualized desktop environment |
| CN111158632B (en) * | 2020-01-07 | 2022-02-25 | 山东超越数控电子股份有限公司 | Method for networking general audio interface under ARM processor |
| CN111954028B (en) * | 2020-10-19 | 2021-03-02 | 深圳乐播科技有限公司 | Screen projection method, device and equipment of audio data and storage medium |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101272383A (en) * | 2008-05-08 | 2008-09-24 | 中兴通讯股份有限公司 | Real-time audio data transmission method |
| CN101286993A (en) * | 2008-06-12 | 2008-10-15 | 中兴通讯股份有限公司 | Method and apparatus for recording and reconstructing code stream, apparatus for recording and reconstructing code stream |
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| JP2003078572A (en) * | 2001-09-04 | 2003-03-14 | Nec Corp | Voice gateway device |
| TWI319955B (en) * | 2006-06-04 | 2010-01-21 | Voice over internet protocol (voip) system and related wireless local area network (wlan) device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101272383A (en) * | 2008-05-08 | 2008-09-24 | 中兴通讯股份有限公司 | Real-time audio data transmission method |
| CN101286993A (en) * | 2008-06-12 | 2008-10-15 | 中兴通讯股份有限公司 | Method and apparatus for recording and reconstructing code stream, apparatus for recording and reconstructing code stream |
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