CN209882099U - Audio remote transmission structure - Google Patents
Audio remote transmission structure Download PDFInfo
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- CN209882099U CN209882099U CN201920708390.6U CN201920708390U CN209882099U CN 209882099 U CN209882099 U CN 209882099U CN 201920708390 U CN201920708390 U CN 201920708390U CN 209882099 U CN209882099 U CN 209882099U
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Abstract
The utility model relates to an audio remote transmission structure, which comprises a local intelligent terminal, wherein the local intelligent terminal comprises a sound card line input interface, a sound card output interface and a far-end information receiving and transmitting interface; the audio switching device also comprises a one-to-two audio switching device; one sound channel of the sound card output interface is a sound channel for outputting far-end information, and far-end sound is converted into two sound channels for output through the one-to-two audio conversion device after being output through the sound channel; the far-end sound is audio information received by the far-end information transceiving interface. Compared with the prior art, the method is convenient for leading the audio playing effect to be better in the remote interaction process.
Description
Technical Field
The utility model relates to an audio frequency remote transmission structure is applicable to the audio frequency transmission structure that needs interactive teaching of long-range audio frequency, meeting etc..
Background
The traditional on-site teaching mode is the most popular and the teaching effect is the best because students can directly face teaching teachers, the classroom atmosphere is most easily driven by the teaching teachers and more interactions can be realized. With the development of the information era, the development of the internet and the shortage of effective teaching resources, the learning requirements of people cannot be met only by the traditional teaching mode, a large part of learners can learn through the internet, the learning mode can be a lesson recording video and can also be remote online education, but the interactive teaching defect of a lesson recording mode and the remote online education mode exists, no method is available for better interactive teaching, and the learning effect is relatively poor.
According to the proposal of the problems, the interactive teaching mode of remote teaching is developed, the interactive teaching mode can be suitable for the teaching situation of students who can not listen to the class in the classroom where the teacher is, and can be used for collecting the sound of answering the questions of the students in other classrooms and collecting the sound of the teacher by using the near-field microphone during the interactive teaching. However, in the remote interaction, it is often necessary to transmit an audio file (such as an audio file in the PPT or another audio file stored on the local intelligent interactive terminal) of a local intelligent interactive terminal (such as a computer, a mobile phone, etc.) to a remote end, and if the audio remote interaction structure flow shown in fig. 1 is adopted, since the audio file of the local intelligent interactive terminal is played after being locally output, it is inconvenient to extract a pure local audio file and send the local audio file to the remote end for playing, the audio playing effect is poor, and the interactive audio experience is poor.
SUMMERY OF THE UTILITY MODEL
The utility model provides an audio frequency teletransmission structure has and is convenient for make long-range interactive in-process, the better characteristics of audio playback effect.
The audio remote transmission structure provided by the utility model comprises,
the system comprises a local intelligent terminal, a remote information receiving and sending interface and a remote information receiving and sending interface, wherein the local intelligent terminal comprises a sound card line input interface, a sound card output interface and a remote information receiving and sending interface;
the audio switching device also comprises a one-to-two audio switching device; one sound channel of the sound card output interface is a sound channel for outputting far-end information, and far-end sound is converted into two sound channels for output through the one-to-two audio conversion device after being output through the sound channel; the far-end sound is audio information received by the far-end information transceiving interface.
The system also comprises an audio information conversion processing module which is arranged at the local intelligent terminal and comprises a far-end information forwarding unit and a third audio information acquisition forwarding unit; the far-end information transceiving interface is communicated with one sound channel output by the sound card through the far-end information forwarding unit, and the far-end information transceiving interface is communicated with the other channel output by the sound card through the third audio information extraction forwarding unit.
The local audio playing device is in communication connection with the sound card output interface through the first power amplifier.
The system also comprises a local first audio acquisition device and a local second audio acquisition device; the first audio acquisition device is connected with a sound channel communication connector of the sound card line input interface; and the second audio acquisition device is in communication connection with the other sound channel of the sound card line input interface.
And the local first audio acquisition device is communicated with one sound channel of the line input interface after passing through the first power amplifier.
And the local second audio acquisition device is communicated with the other sound channel of the line input interface after passing through a second power amplifier.
The local first audio acquisition device is a near-field microphone audio acquisition device.
The local second audio acquisition device is a far-field microphone audio acquisition device.
The first audio acquisition device is communicated with a left sound channel of a line input interface of the sound card; and the second audio acquisition device is communicated with the right sound channel of the line input interface of the sound card.
The system also comprises an audio information conversion processing module which is arranged at the local intelligent terminal and comprises an echo eliminating unit which is respectively communicated with the line input interface of the sound card and the far-end information transceiving interface.
To sum up, the utility model discloses compare in prior art, be convenient for make long-range interactive in-process, audio playback effect is better.
Drawings
Fig. 1 is a schematic diagram of an audio transmission structure implemented in the prior art.
Fig. 2 is a schematic connection diagram of an audio transmission structure according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention.
Any feature disclosed in this specification (including any accompanying drawings) may be replaced by alternative features serving equivalent or similar purposes, unless expressly stated otherwise. That is, unless expressly stated otherwise, each feature is only an example of a generic series of equivalent or similar features.
The utility model discloses an audio frequency teletransmission structure can be used for various occasions including long-range audio frequency is interactive, including teleconference, long-range teaching etc.
The present novel embodiment will be described in detail below using a remote teaching as an example.
As shown in fig. 1, in the prior art, a local remote information transceiving interface is in direct communication connection with an output/input/output of a sound card earphone, and since an audio file of a local intelligent interactive terminal is played after being locally output, it is inconvenient to extract a pure local audio file and send the local audio file to a remote terminal for playing, the audio playing effect is poor, and the interactive audio experience is poor. In order to extract a pure local audio file conveniently, as a technical solution, one of the sound channels may be used to output the received far-end audio information for local playing, so that the pure local audio file can be retrieved from the other sound channel, however, if only one of the sound channels outputs the received far-end audio information for local playing, the locally played far-end audio information is not played by the left and right players, and the user experience effect is poor.
As shown in fig. 2, according to the present invention, there is provided an audio remote transmission structure, including,
the system comprises a local intelligent terminal and a remote information receiving and sending terminal, wherein the local intelligent terminal comprises a sound card line input interface, a sound card output interface (such as a sound card earphone output interface shown in figure 2) and a remote information receiving and sending interface;
the audio switching device also comprises a one-to-two audio switching device; one sound channel of the sound card output interface is a sound channel for outputting far-end information, and far-end sound is converted into two sound channels for output through the one-to-two audio conversion device after being output through the sound channel; the far-end sound is audio information received by the far-end information transceiving interface.
The local intelligent terminal may be a computer, a mobile phone, or the like, and in this specific embodiment, is a computer. Through the utility model discloses the scheme even just through a sound channel output audio information, the remote audio frequency that also can realize local broadcast plays the player about.
As an embodiment of the utility model, the system further comprises an audio information conversion processing module, which is arranged at the local intelligent terminal and comprises a far-end information forwarding unit and a third audio information back-sampling forwarding unit; the far-end information transceiving interface is communicated with one sound channel output by the sound card through the far-end information forwarding unit, and the far-end information transceiving interface is communicated with the other channel output by the sound card through the third audio information extraction forwarding unit.
In this embodiment, the remote information transceiving interface communicates with a sound channel output by the sound card through the remote information forwarding unit, so that the remote information forwarding unit receives the audio information sent by the remote information transceiving interface, and further forwards the audio information to a channel (such as a right sound channel shown in fig. 2) output by the sound card to be played locally through the channel output. The far-end information transceiving interface is communicated with the other channel output by the sound card through the third audio information recovery and forwarding unit, so that the third audio information recovery and forwarding unit can conveniently recover the third audio information from the other channel output by the sound card and send the third audio information to a far end through the far-end information transceiving interface.
As an embodiment of the utility model, still include first power amplifier and local audio playback device, local audio playback device is through first power amplifier, with sound card output interface communication connection, like the loudspeaker shown in fig. 2 to audio information after will amplifying sends for audio playback device broadcast.
As an embodiment of the utility model, the device also comprises a local first audio acquisition device and a local second audio acquisition device; the first audio acquisition device is in communication connection with one sound channel of a line input interface of the sound card, so that first audio information can be conveniently sent to the far-end information transceiving interface through the one sound channel of the line input interface; the sound card of the second audio acquisition device is in communication connection with the other sound channel of the sound card line input interface, so that second audio information can be conveniently sent to the far-end information transceiving interface through the other sound channel of the sound card line input interface.
The local intelligent terminal may be a computer, a mobile phone, or the like, and in this specific embodiment, is a computer. The utility model discloses an among the audio transmission interface, for satisfying two audio acquisition device's in the practical application demand, two audio acquisition device one-to-one own sound channels in sound card line input interface, in the audio transmission process of being convenient for, gather the audio information mutual exclusion that two audio acquisition device gathered and send local intelligent terminal to the distal end, so, solved the defect that audio information secondary collection brought, interactive in-process, the audio playback effect is better, user experience degree is high.
As an embodiment of the utility model, after local first audio acquisition device passed through first power amplifier, with a sound channel communication of sound card line input interface.
As an embodiment of the utility model, after local second audio acquisition device passed through the second power amplifier, with another sound channel communication of sound card line input interface.
As an embodiment of the utility model, local first audio acquisition device is near field wheat audio acquisition device, mainly used gathers mr's audio information.
In practical applications in various fields, the two audio acquisition devices are not limited to one near-field microphone and one far-field microphone, but may be both near-field microphones, or both far-field microphones, or one unidirectional microphone, one omnidirectional microphone, or both unidirectional microphones, or a combination of other types of audio acquisition devices.
As an embodiment of the utility model, local second audio acquisition device is far field wheat audio acquisition device, mainly used gathers student's audio information.
As an embodiment of the present invention, the first audio collecting device is in communication with a left channel of a line input interface of a sound card; and the second audio acquisition device is communicated with the right sound channel of the line input interface of the sound card. Here, the transmission interface is not limited, and the connection relationship between the left channel and the right channel may be interchanged, and the roles may also be interchanged.
As an embodiment of the utility model, still include audio information conversion processing module, set up at local intelligent terminal, eliminate the unit including the echo, respectively with sound card line input interface and far-end information transceiver interface communication, receive sound card line input interface's audio information to send far-end information transceiver interface after the echo is eliminated. In this embodiment, the Echo cancellation method used by the Echo cancellation unit may be a prior art method, such as an Acoustic Echo.
On the basis of the transmission structure, the audio information collected by the local audio collecting device is convenient to partially or completely echo-eliminated before being sent to the far end, and then is sent to the far end.
The utility model discloses an audio transmission structure to the condition that is not limited to the remote teaching in the embodiment, can be applicable to the interactive condition of long-range audio frequency of needs such as teleconference equally. By adopting the implementation scheme of the invention, the audio quality in the remote audio interaction process can be effectively ensured, the defects of echo, sound mixing and the like can be effectively prevented, and a better audio playing effect can be achieved.
Claims (10)
1. An audio remote transmission architecture, comprising,
the system comprises a local intelligent terminal, a remote information receiving and sending interface and a remote information receiving and sending interface, wherein the local intelligent terminal comprises a sound card line input interface, a sound card output interface and a remote information receiving and sending interface;
the audio switching device also comprises a one-to-two audio switching device; one sound channel of the sound card output interface is a sound channel for outputting far-end information, and far-end sound is converted into two sound channels for output through the one-to-two audio conversion device after being output through the sound channel; the far-end sound is audio information received by the far-end information transceiving interface.
2. The audio remote transmission structure according to claim 1, further comprising an audio information conversion processing module, disposed in the local intelligent terminal, including a remote information forwarding unit and a third audio information extraction forwarding unit; the far-end information transceiving interface is communicated with one sound channel output by the sound card through the far-end information forwarding unit, and the far-end information transceiving interface is communicated with the other channel output by the sound card through the third audio information extraction forwarding unit.
3. The audio remote transmission structure according to claim 1, further comprising a first power amplifier and a local audio playing device, wherein the local audio playing device is communicatively connected to the sound card output interface through the first power amplifier.
4. The audio remote transmission structure according to claim 2 or 3, further comprising a first audio capturing device and a second audio capturing device locally; the first audio acquisition device is in communication connection with one sound channel of the sound card line input interface; and the second audio acquisition device is in communication connection with the other sound channel of the sound card line input interface.
5. The structure of claim 4, wherein the first local audio capture device communicates with a sound channel of the line input interface of the sound card through a first power amplifier.
6. The structure of claim 4, wherein the second local audio acquisition device communicates with the other audio channel of the line input interface of the sound card through a second power amplifier.
7. The audio mass transfer structure of claim 4, wherein the local first audio capture device is a near-field microphone audio capture device.
8. The audio retransmission structure according to claim 4, wherein the local second audio capture device is a far-field microphone audio capture device.
9. The audio remote transmission structure according to claim 4, wherein said first audio capture device is in communication with a left channel of a sound card line input interface; and the second audio acquisition device is communicated with the right sound channel of the line input interface of the sound card.
10. The audio remote transmission structure according to claim 4, further comprising an audio information conversion processing module disposed in the local intelligent terminal, and including an echo cancellation unit, which is respectively in communication with the sound card line input interface and the remote information transceiving interface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920708390.6U CN209882099U (en) | 2019-05-17 | 2019-05-17 | Audio remote transmission structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920708390.6U CN209882099U (en) | 2019-05-17 | 2019-05-17 | Audio remote transmission structure |
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| CN209882099U true CN209882099U (en) | 2019-12-31 |
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| CN201920708390.6U Active CN209882099U (en) | 2019-05-17 | 2019-05-17 | Audio remote transmission structure |
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