CN101984622A - Real-time transport protocol based bidirectional voice frequency mapping system and method - Google Patents
Real-time transport protocol based bidirectional voice frequency mapping system and method Download PDFInfo
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- CN101984622A CN101984622A CN2010105269529A CN201010526952A CN101984622A CN 101984622 A CN101984622 A CN 101984622A CN 2010105269529 A CN2010105269529 A CN 2010105269529A CN 201010526952 A CN201010526952 A CN 201010526952A CN 101984622 A CN101984622 A CN 101984622A
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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 mapped system and method based on RTP.
[background technology]
Along with the develop rapidly of digital multimedia, computer, interference networks and mobile network's technology, based on the application of the audio frequency of mobile network and interference networks, video monitoring more and more widely, 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 transmit voice data, and other data such as transmitted 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 are 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 bigger, 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 quality of audio 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 the voice data that reads to server by RTP.
Two of the technical problem to be solved in the present invention is to provide a kind of two way audio mapped system based on RTP.
Two of this technical problem is achieved in that a kind of two way audio mapped system based on RTP, it comprises client computer that client audio frequency mapping service is installed and the server that service end audio frequency mapping service is installed, and described client computer is connected with described server by RTP.
The present invention has following advantage: when server wants the voice data of access client or client computer to play from voice data that server reads, 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 a 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.
See shown in Figure 1, two way audio mapped system based on RTP, comprise 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, has the virtual sound card driver in the described server.
Wherein client computer is equipped with client audio frequency mapping service, client computer also has the client sound card, server is equipped with service end audio frequency mapping service, server has virtual sound card driver and server-side application in addition, RTP: for voice data provides the service of the end-to-end transfer with real-time feature.
Client sound card in the client computer is: the physics sound card.
Client audio frequency mapping service has audio recording and voice playing function, audio recording: read voice data from the client sound card, voice data is sent to server by RTP.Voice playing: 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, obtain voice data from service end audio frequency mapping service, send voice data to server-side application.When voice playing 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 voice playing function, audio recording: obtain voice data by RTP, voice data is write the virtual sound card driver.Voice playing: read voice data from the virtual sound card driver, voice data is sent to client computer by RTP.
See shown in Figure 2ly, 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 the voice data that reads to server by RTP.
When client computer will be play from voice data that server reads, the virtual sound card driver obtains voice data from server-side application, and notification service end audio frequency mapping service starts voice playing, server sends to client audio frequency mapping service by RTP with voice data, client audio frequency mapping service starts voice playing, 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 being done according to the present patent application claim change and modify, and all should belong to covering scope of the present invention.
Claims (4)
1. based on the two way audio mapped system of RTP, it is characterized in that: comprise 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.
2. the two way audio mapped system based on RTP according to claim 1 is characterized in that: have the virtual sound card driver in the described server.
3. 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 the voice data that reads to server by RTP.
4. the two way audio mapping method based on RTP according to claim 3, it is characterized in that: when client computer is play from the voice data that server reads, the virtual sound card driver sends voice data, and notification service end audio frequency mapping service starts voice playing, server sends to client audio frequency mapping service by RTP with voice data, client audio frequency mapping service starts voice playing, 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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| CN101984622B CN101984622B (en) | 2013-04-17 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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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 |
| CN111158632A (en) * | 2020-01-07 | 2020-05-15 | 山东超越数控电子股份有限公司 | Method for networking general audio interface under ARM processor |
| CN111954028A (en) * | 2020-10-19 | 2020-11-17 | 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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| US20030046387A1 (en) * | 2001-09-04 | 2003-03-06 | Nec Corporation | Audio gateway device |
| CN101083695A (en) * | 2006-06-04 | 2007-12-05 | 华硕电脑股份有限公司 | Voice over internet protocol system and related wireless local area network device |
| 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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| US20030046387A1 (en) * | 2001-09-04 | 2003-03-06 | Nec Corporation | Audio gateway device |
| CN101083695A (en) * | 2006-06-04 | 2007-12-05 | 华硕电脑股份有限公司 | Voice over internet protocol system and related wireless local area network device |
| 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 |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN111158632A (en) * | 2020-01-07 | 2020-05-15 | 山东超越数控电子股份有限公司 | Method for networking general audio interface under ARM processor |
| 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 |
| CN111954028A (en) * | 2020-10-19 | 2020-11-17 | 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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| CN101984622B (en) | 2013-04-17 |
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