CN101534358A - Network session system with stereophonic effect - Google Patents
Network session system with stereophonic effect Download PDFInfo
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- CN101534358A CN101534358A CN200910049713A CN200910049713A CN101534358A CN 101534358 A CN101534358 A CN 101534358A CN 200910049713 A CN200910049713 A CN 200910049713A CN 200910049713 A CN200910049713 A CN 200910049713A CN 101534358 A CN101534358 A CN 101534358A
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Abstract
The invention discloses a network session system with stereophonic effect, which comprises acquisition devices, an echo cancellation device, a network device, and a plurality of playback devices, wherein the acquisition devices are arranged at different positions nearby a sound source respectively and used for acquiring different sound signals; the echo cancellation device is used for performing echo cancellation treatment on the sound signals acquired by the sound acquisition devices; the network device is used for transmitting the sound signals subjected to the echo cancellation treatment to a remote end; and the plurality of playback devices are arranged at different positions nearby a sound listener at the remote end, the number of the playback devices is the same as the number of the sound acquisition devices, and each playback device plays a route of sound signals transmitted by the network device to form the stereophonic effect. The network session system has the advantages that the system can generate the stereophonic effect and increase the reality sense of the user.
Description
Technical field
The present invention relates to a kind of network talking system, particularly a kind of network talking system with stereophonic effect.
Background technology
Echo is because acoustic reflection returns or the sound that repeats or the reflection of signal cause, acoustic reflection in many lives such as returns at the echo that causes to be needed, the time that this echo often continues is very short and level is very low, generally allow the people feel nature, such as: the sound of the regular reflection of short time, telephone set one side in the room, echo/musical echo etc.And, level excessive echo long for the echo, particularly time of delay that cause in the signal of telecommunication transmission, owing to it can cause feedback and have a strong impact on speaker and hearer, so should be avoided as far as possible.
For example, in video conference or QQ Video chat commonly used,, cause echo very to be easy to generate because both call sides all disposes such as receiving equipments such as tone playing equipment such as audio amplifier and microphones.See also Fig. 1, in communication process, local terminal caller's sound is received by microphone, and play at the audio amplifier of far-end, and the microphone of far-end collects the sound of being play, and mixes the caller's of far-end dialog context, be back in the audio amplifier of local terminal and play, then the caller at local terminal will hear the sound that oneself sends, because time-lag action, as having heard echo.Similarly, the sound of far-end also can receive the sound of the audio amplifier of local terminal owing to the microphone of local terminal, and makes far-end produce echo.Overlapping so repeatedly echo, especially serious in the multi-point audio meeting, even can influence normally carrying out of meeting.
In order to weaken the influence that echo brings in the communication process, the researcher has designed various echo cancellation technology, mainly contains following several method:
Close the local terminal microphone when 1, receiving the far-end audio signal, what this method adopted is half-duplex, may need manual operation, and converses and may be cut off, not satisfactory.
Automatically suppress Mike's audio frequency when 2, receiving the far-end audio signal, this method has adopted half-duplex equally, and conversation may be cut off equally, and, detect the wrong outburst that may cause echo, not satisfactory.
3, adopt echo canceller, this method has adopted full duplex, and it is transparent to converse, and is comparatively desirable scheme.As being in the Chinese patent of CN200710004351.X at application number, a kind of echo eliminating device and echo removing method are disclosed.
Although the echo cancellation technology has obtained widespread usage in Internet phone-calling, but along with the raising of people to the quality of life requirement, have now and only can know that the network talking system of playing speaker's sound has been difficult to satisfy people's demand, and how a kind of network talking system with stereophonic effect is provided, become the problem that those skilled in the art need solve.
Summary of the invention
Technical scheme to be solved of the present invention provides a kind of network talking system with stereophonic effect, to overcome the deficiencies in the prior art.
For solving technique scheme, the invention provides a kind of network talking system with stereophonic effect, comprising: near the collecting device that diverse location is provided with respectively sound source, in order to collect different voice signals; Echo cancellation equipment is used for that the voice signal that each sound collection equipment is gathered is carried out echo cancellation respectively and handles; The network equipment is used to transmit each voice signal of process echo cancellation processing to far-end; Be arranged near several tone playing equipments of the diverse location of described far-end auditor, its number is identical with the number of sound collection equipment, and each tone playing equipment is play the road voice signal that is transferred to by the described network equipment, to form stereophonic effect.
Preferable, the position with respect to the auditor of described several tone playing equipments, corresponding with the pairing sound collection equipment of the sound source of its broadcast with respect to the position of sound source.
Preferable, the number of sound collection equipment is 2 the road or 4 the tunnel.
Preferable, collecting device is a microphone.
Preferable, tone playing equipment is an audio amplifier.
Preferable, the described network equipment is for forming the equipment of local area network (LAN) or the Internet.
Preferably, the described network equipment transmits voice signal by a remote equipment to described tone playing equipment.
Beneficial effect of the present invention is: can produce stereophonic effect, increase user's the sense of reality.
Description of drawings
Fig. 1 produces schematic diagram for the echo in the communication.
Fig. 2 is the network talking system block diagram with stereophonic effect.
Fig. 3 is the network talking system block diagram of a preferred embodiment.
Embodiment
Describe the preferred embodiments of the present invention in detail below in conjunction with accompanying drawing.
For the network talking system that solves prior art lacks the problem of stereophonic effect, network talking system provided by the invention has adopted many collecting devices, gathers multi-channel sound signal; Each road signal is carried out noise reduction respectively handle, respectively transmission; And adopted many tone playing equipments, play multi-channel sound signal.See also Fig. 2, signal source among the figure can be voice or other sound, system adopts multi pass acquisition equipment (for for purpose of brevity at the diverse location of local terminal, collecting device N and collecting device N+1 only are shown) among the figure, the sound that send in the acquired signal source, be converted into different voice signals, and import local terminal equipment (being echo cancellation equipment) respectively, local terminal equipment carries out processing such as noise reduction respectively to the voice signal on each road, transfer to remote equipment respectively by the network equipment (figure does not show) then, after remote equipment is handled the different voice signal in each road that receives, export each road voice signal to the tone playing equipment corresponding respectively (for for purpose of brevity with the collecting device of gathering this voice signal, tone playing equipment N and tone playing equipment N+1 only are shown among the figure) playback, the corresponding relation of described collecting device and described tone playing equipment is for preestablishing, can revise after the setting, because the voice signal difference that the local terminal collecting device is received, after multichannel processing transmission, the sound that the tone playing equipment of far-end is play according to different voice signals is also different, as long as the position with respect to the auditor of tone playing equipment, corresponding with the pairing sound collection equipment of the sound source of its broadcast with respect to the position of sound source, just can reach the purpose that produces stereophonic effect at receiving terminal.
The above-mentioned described monolateral network talking system of giving orders or instructions that is, give orders or instructions to far-end by local terminal, if need bilateral conversation, then adopt two cover network talking systems, one cover is given orders or instructions to far-end by local terminal, and a cover is given orders or instructions to get final product to local terminal by far-end, wherein, local terminal sets, the network equipment and remote equipment can merge, and the described network equipment is for forming the equipment of local area network (LAN) or the Internet.。
Below be example with a network talking system that is used for audio conferencing with stereophonic effect.
See also Fig. 3, signal source 101 is made up of the voice of voice 1011, voice 1012 and 1,013 three diverse locations of voice.When voice 1011 was sounded signal, voice signal can enter collecting device 102 simultaneously.Collecting device 102 is made up of 1,022 two microphones that the position is different of microphone 1021 and microphone.Because the position of voice 1011 is more near the relation of microphone 1021, the voice signal that microphone 1021 is collected is bigger, and the voice signal that microphone 1022 is collected is just less relatively.Microphone 1021 and microphone 1022 are exported to signal handling equipment 103 respectively with the alternative sounds signal that collects.Signal handling equipment 103 is by local terminal equipment 1031, and the network equipment 1032 and remote equipment 1033 are formed.Two alternative sounds signals after the alternative sounds signal that local terminal equipment collects microphone 1021 and microphone 1022 carries out respectively will handling after the acoustic processings such as echo cancellation output to the network equipment 1032.Again these two different voice signals are exported to remote equipment 1033 by the network equipment 1032.Remote equipment 1033 is exported to tone playing equipment 104 to two alternative sounds signals respectively.Tone playing equipment 104 is made up of 1,042 two audio amplifiers that the position is different of audio amplifier 1041 and audio amplifier.The voice signal of the microphone 1021 that audio amplifier 1041 outputs are corresponding is given receiving terminal 105.The voice signal of the microphone 1022 that audio amplifier 1042 outputs are corresponding is given receiving terminal 105.Receiving terminal 105 is made up of left ear 1051 and auris dextra 1052.The audio amplifier 1042 close auris dextras 1052 owing to audio amplifier 1041 close left ears 1051, so the voice signal that left ear 1051 receives is bigger than the voice signal that auris dextra 1052 receives, and can judge that thus voice 1011 is at left ear 1,051 1 side positions.It is same when voice 1012 is sounded signal; The voice signal that voice signal that left side ear 1051 receives and auris dextra 1052 receive is almost big, can judge the centre position of voice 1012 thus at left ear 1051 and auris dextra 1052, when voice 1013 is sounded signal, the voice signal that left side ear 1051 receives is littler than the voice signal that auris dextra 1052 receives, and can judge that thus voice 1013 is at auris dextra 1,052 one side positions.Reached the purpose of stereophonic effect.
Same, network talking system shown in the present embodiment is the network talking system that is used for the monolateral communication system of giving orders or instructions, if will be the network talking system that is used for bilateral conversation, as long as increase several tone playing equipments in the position of collecting device 102, increase by a remote equipment in the position of local terminal equipment 1031 or make local terminal equipment 1031 have the function of remote equipment, increase by a local terminal equipment in the position of remote equipment 1033 or make remote equipment 1033 have the function of local terminal equipment, increase several collecting devices in tone playing equipment 104 positions, be equivalent to increase a cover network talking system and get final product.
Above embodiment is the unrestricted technical scheme of the present invention in order to explanation only.Any modification or partial replacement that does not break away from spirit and scope of the invention replaces with other collecting devices with microphone, and audio amplifier is replaced with other tone playing equipments etc., all should be encompassed in the middle of the claim scope of the present invention.
Claims (7)
1, a kind of network talking system with stereophonic effect is characterized in that comprising:
Near the collecting device that diverse location is provided with respectively sound source is in order to collect different voice signals;
Echo cancellation equipment is used for that the voice signal that each sound collection equipment is gathered is carried out echo cancellation respectively and handles;
The network equipment is used to transmit each voice signal of process echo cancellation processing to far-end;
Be arranged near several tone playing equipments of the diverse location of described far-end auditor, its number is identical with the number of sound collection equipment, and each tone playing equipment is play the road voice signal that is transferred to by the described network equipment, to form stereophonic effect.
2, the network talking system with stereophonic effect as claimed in claim 1, it is characterized in that: the position with respect to the auditor of described several tone playing equipments, corresponding with the pairing sound collection equipment of the sound source of its broadcast with respect to the position of sound source.
3, the network talking system with stereophonic effect as claimed in claim 1 or 2 is characterized in that: the number of sound collection equipment is 2 the road or 4 the tunnel.
4, as claim 1 or 2 or 3 described network talking systems with stereophonic effect, it is characterized in that: collecting device is a microphone.
5, the network talking system with stereophonic effect as claimed in claim 1 or 2 is characterized in that: tone playing equipment is an audio amplifier.
6, the network talking system with stereophonic effect as claimed in claim 1 is characterized in that: the described network equipment is for forming the equipment of local area network (LAN) or the Internet.
7, the network talking system with stereophonic effect as claimed in claim 1 is characterized in that: the described network equipment transmits voice signal by a remote equipment to described tone playing equipment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910049713A CN101534358A (en) | 2009-04-21 | 2009-04-21 | Network session system with stereophonic effect |
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| Application Number | Priority Date | Filing Date | Title |
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| CN200910049713A CN101534358A (en) | 2009-04-21 | 2009-04-21 | Network session system with stereophonic effect |
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| CN101534358A true CN101534358A (en) | 2009-09-16 |
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| CN200910049713A Pending CN101534358A (en) | 2009-04-21 | 2009-04-21 | Network session system with stereophonic effect |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102340729A (en) * | 2010-07-19 | 2012-02-01 | 中国电信股份有限公司 | Method for processing and restoring audio signal and system thereof |
| CN104105056A (en) * | 2013-04-12 | 2014-10-15 | 上海果壳电子有限公司 | Conversation method, conversation system and hand-held device |
-
2009
- 2009-04-21 CN CN200910049713A patent/CN101534358A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102340729A (en) * | 2010-07-19 | 2012-02-01 | 中国电信股份有限公司 | Method for processing and restoring audio signal and system thereof |
| CN102340729B (en) * | 2010-07-19 | 2014-05-14 | 中国电信股份有限公司 | Method for processing and restoring audio signal and system thereof |
| CN104105056A (en) * | 2013-04-12 | 2014-10-15 | 上海果壳电子有限公司 | Conversation method, conversation system and hand-held device |
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Application publication date: 20090916 |