CN203722826U - Multichannel processing unit of microphone signal in digital cinema - Google Patents
Multichannel processing unit of microphone signal in digital cinema Download PDFInfo
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- CN203722826U CN203722826U CN201420006966.1U CN201420006966U CN203722826U CN 203722826 U CN203722826 U CN 203722826U CN 201420006966 U CN201420006966 U CN 201420006966U CN 203722826 U CN203722826 U CN 203722826U
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- 230000001629 suppression Effects 0.000 claims abstract description 14
- 230000000694 effects Effects 0.000 claims abstract description 12
- 230000003321 amplification Effects 0.000 claims abstract description 11
- 238000003199 nucleic acid amplification method Methods 0.000 claims abstract description 11
- 230000005236 sound signal Effects 0.000 claims abstract description 6
- 238000000034 method Methods 0.000 claims description 32
- 230000002401 inhibitory effect Effects 0.000 claims description 3
- 230000004048 modification Effects 0.000 description 4
- 238000006011 modification reaction Methods 0.000 description 4
- 238000010276 construction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
Abstract
The utility model discloses a multichannel processing unit of microphone signals in a digital cinema. The multichannel processing unit comprises a microphone; the microphone is connected in turn with a pre-amplifier, a gain controller, a frequency equalizer, an effect processor and a feedback suppressor; and the feedback suppressor is connected with a multichannel sound mixing processor which is used for performing sound mixing processing on sound signals, of a film itself, generated by a digital film preceding-stage audio processor and voice signals generated through successive processing by the pre-amplifier, the gain controller, the frequency equalizer, the effect processor and the feedback suppressor. The beneficial effects of the multichannel processing unit are that an excellent voice amplification effect is realized and that a video hall of the digital cinema has purposes of a multi-function room (such as rooms for conferences or lectures).
Description
Technical field
The utility model relates to Audiotechnica field, is specifically related to the multichannel processing unit of microphone signal in a kind of digital camera.
Background technology
Present stage digital movie audio standard, mainly adopt DTS or the stereo mode of Dolby Digital5.1 multichannel surround sound, therefore, the playback system Construction of digital camera carries out around this standard, with the original audio scene of true reappearance film.
Make a general survey of also system for electrical teaching of current digital camera, the subsequent treatment of having given prominence to the key points to the audio-frequency information comprising from film itself, has only realized the simple function of digital movie playback.When requiring to have multifunctional hall (as meeting, speech etc.) purposes concurrently, this single movie theater function cannot meet the demands.Even if there are indivedual movie theaters to be accompanied with microphone public address function, but microphone signal is also confined to send from traditional stereo (from preposition left and right sound channels), can only adapt to little Room voice amplification, and for hall/super large Room or be the film Room by the longer auditorium type structure of modification of depth, to expose the seriously unbalanced of whole sound field voice amplification acoustic pressure, thereby do not there is general practicality.
Utility model content
The utility model relates to the multichannel of a kind of microphone (being voice) signal in digital camera playback system engineering to be processed and application, to realize good voice amplification effect, thereby allow the Movie House of digital camera have multifunctional hall (as meeting, speech etc.) purposes concurrently.
The utility model is by the following technical solutions:
A multichannel processing unit for microphone signal in digital camera, comprising: for receiving the voice signal of microphone generation and amplifying the preamplifier of processing; The gain controller that is used for receiving the voice signal after the amplification producing through preamplifier and carries out gain process; For receiving the go forward side by side frequency equalizer of line frequency equilibrium treatment of voice signal after the gain that gain controller produces; For receiving voice signal after the frequency equilibrium producing through frequency equalizer the is processed surround processor that line delay and reverberation process of going forward side by side; The voice signal with time delay and reverberation effect producing for reception processor the feedback suppressor that carries out feedback inhibition processing; For the audio signal of film self that digital movie prime audio process is produced with carry out the multichannel stereo process device of multichannel stereo process through the voice signal that above-mentioned preamplifier, gain controller, frequency equalizer, surround processor and feedback suppressor are processed generation successively.
By voice signal that microphone is produced, after processing successively, preamplifier, gain controller, frequency equalizer, surround processor and feedback suppressor again film self audio signal of itself and digital movie prime audio process is carried out just having realized microphone signal being assigned to all sound channels after multichannel stereo process, to meet the specific requirement of different movie theatre environment to voice amplification.
Further technical scheme is, in described digital camera, the multichannel processing unit of microphone signal is connected with audio-frequency power amplifier.
Further technical scheme is, described microphone is cable microphone or wireless microphone.
Further technical scheme is, described multichannel stereo process device is 8 sound channel mixers.
Compared with prior art, the beneficial effects of the utility model are:
This device is realized good voice amplification effect, thereby allows the Movie House of digital camera have multifunctional hall (as meeting, speech etc.) purposes concurrently.
Accompanying drawing explanation
Fig. 1 is the multichannel processing unit structured flowchart of microphone signal in a kind of digital camera of a kind of embodiment of the utility model.
As shown in Figure 1, wherein the Reference numeral name of correspondence is called:
101 microphones, 102 preamplifiers, 103 gain controllers, 104 frequency equalizers, 105 surround processors, 106 feedback suppressors, 107 multichannel stereo process devices, 108 audio-frequency power amplifiers, 109 digital movie prime audio process.
Embodiment
Below in conjunction with accompanying drawing, the utility model is further elaborated.
A multichannel processing unit for microphone signal in digital camera, comprising: preferred for receiving microphone 101(, described microphone 101 is cable microphone or wireless microphone) voice signal producing the preamplifier 102 that amplifies processing; The gain controller 103 that is used for receiving the voice signal after the amplification producing through preamplifier 102 and carries out gain process; For receiving the go forward side by side frequency equalizer 104 of line frequency equilibrium treatment of voice signal after the gain producing through gain controller 103; For receiving voice signal after the frequency equilibrium producing through frequency equalizer 104 the is processed surround processor 105 that line delay and reverberation process of going forward side by side; The voice signal with time delay and reverberation effect producing for reception processor 105 feedback suppressor 106 that carries out feedback inhibition processing; For the audio signal of film self that digital movie prime audio process 109 is produced with to carry out the multichannel stereo process device 107(of multichannel stereo process through the voice signal that above-mentioned preamplifier 102, gain controller 103, frequency equalizer 104, surround processor 105 and feedback suppressor 106 are processed generation successively preferred, described multichannel stereo process device 107 is 8 sound channel mixers).
According to an embodiment of the present utility model, in described digital camera, the multichannel processing unit of microphone signal is connected with audio-frequency power amplifier 108.
Operation principle of the present utility model is:
By microphone, 101(is preferred, and described microphone 101 is cable microphone or wireless microphone) the faint voice signal that produces is admitted to preamplifier 102 and amplifies, to meet with subsequent treatment unit in the optimum Match aspect level amplitude and impedance; Gain controller 103 comprises the comprehensive gain control of automatic gain and manual gain (volume adjusting); Frequency equalizer 104 carries out the frequency equilibrium of speech tone and tone color rhetorical function to process; Surround processor 105 allows voice signal have the effect process of time delay and space reverberation function; Feedback suppressor 106 carries out acoustic feedback to be suppressed to process, and to ensure not produce to feedback in the voice amplification process of Different field, utters long and high-pitched sounds; Multichannel stereo process device 107 is by the voice signal through perfect processing and carry out multichannel stereo process from film self audio signal of digital movie prime audio process; By apparatus such as computer, control processing, realize or allow microphone signal close or allow microphone signal only be assigned to preposition left and right sound channel or allow microphone signal be assigned to all sound channels, to meet the specific requirement of different movie theatre environment to voice amplification, finally send into multichannel audio power amplifier 108 and promote to go back sound box with sound public address.
Above-mentioned preamplifier 102, gain controller 103, frequency equalizer 104, surround processor 105, feedback suppressor 106, multichannel stereo process device 107, audio-frequency power amplifier 108, digital movie prime audio process 109 all adopts equipment of the prior art, the utility model is only chosen existing the said equipment and is carried out adaptability adjustment, improvement of the present utility model is not the improvement being above-mentioned individual equipment, but the said equipment is combined with annexation in order and formed a multichannel treatment system; Each equipment all plays existing function separately, and whole multichannel treatment system allows the function of each equipment link up, and the collaborative object that realizes multichannel processing, has solved the defects such as traditional voice public address weak effect.
" embodiment " that spoken of in this manual, " another embodiment ", " embodiment ", etc., refer to specific features, structure or the feature in conjunction with this embodiment, described and be included at least one embodiment that the application's generality describes.In specification, a plurality of local appearance statement of the same race is not necessarily to refer to same embodiment.Furthermore, while describing a specific features, structure or feature in conjunction with arbitrary embodiment, what advocate is in conjunction with other embodiment, to realize this feature, structure or feature also to drop in scope of the present utility model.
Although utility model is described with reference to a plurality of explanatory embodiment of the present utility model here, but, should be appreciated that, those skilled in the art can design a lot of other modification and execution modes, and these are revised and within execution mode will drop on the disclosed principle scope and spirit of the application.More particularly, in the scope of, accompanying drawing open in the application and claim, can carry out multiple modification and improvement to the building block of subject combination layout and/or layout.Except modification that building block and/or layout are carried out with improving, to those skilled in the art, other purposes will be also obvious.
Claims (4)
1. a multichannel processing unit for microphone signal in digital camera, comprising:
Be used for receiving the voice signal of microphone (101) generation and amplify the preamplifier (102) of processing;
The gain controller (103) that is used for receiving the voice signal after the amplification producing through preamplifier (102) and carries out gain process;
For receiving the go forward side by side frequency equalizer (104) of line frequency equilibrium treatment of voice signal after the gain producing through gain controller (103);
For receiving voice signal after the frequency equilibrium producing through frequency equalizer (104) the is processed surround processor (105) that line delay and reverberation process of going forward side by side;
The voice signal with time delay and reverberation effect producing for reception processor (105) the feedback suppressor (106) that carries out feedback inhibition processing;
Be used for the audio signal of the film self of digital movie prime audio process (109) generation and process successively through above-mentioned preamplifier (102), gain controller (103), frequency equalizer (104), surround processor (105) and feedback suppressor (106) the multichannel stereo process device (107) that the voice signal producing carries out multichannel stereo process.
2. the multichannel processing unit of microphone signal in digital camera according to claim 1, is characterized in that: in described digital camera, the multichannel processing unit of microphone signal is connected with audio-frequency power amplifier (108).
3. the multichannel processing unit of microphone signal in digital camera according to claim 1, is characterized in that: described microphone (101) is cable microphone or wireless microphone.
4. the multichannel processing unit of microphone signal in digital camera according to claim 1, is characterized in that: described multichannel stereo process device (107) is 8 sound channel mixers.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420006966.1U CN203722826U (en) | 2014-01-06 | 2014-01-06 | Multichannel processing unit of microphone signal in digital cinema |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201420006966.1U CN203722826U (en) | 2014-01-06 | 2014-01-06 | Multichannel processing unit of microphone signal in digital cinema |
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| CN203722826U true CN203722826U (en) | 2014-07-16 |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104394498A (en) * | 2014-09-28 | 2015-03-04 | 北京塞宾科技有限公司 | A three-channel holographic sound field playback method and sound field collecting device |
| CN107241671A (en) * | 2017-07-01 | 2017-10-10 | 邓永林 | A kind of sound system audio processing method and intelligent sound processing system |
| CN109686348A (en) * | 2018-12-13 | 2019-04-26 | 广州艾美网络科技有限公司 | A kind of audio processing system restoring professional audio |
| CN111586527A (en) * | 2020-04-28 | 2020-08-25 | 重庆西原楼宇自动化工程有限公司 | Intelligent voice processing system |
| CN113470669A (en) * | 2021-05-26 | 2021-10-01 | 广州市迪士普音响科技有限公司 | Digital audio processing method and system |
| CN112820256B (en) * | 2021-01-14 | 2022-06-14 | 四川湖山电器股份有限公司 | Reverberation method and system based on improved feedback delay network |
-
2014
- 2014-01-06 CN CN201420006966.1U patent/CN203722826U/en active Active
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104394498A (en) * | 2014-09-28 | 2015-03-04 | 北京塞宾科技有限公司 | A three-channel holographic sound field playback method and sound field collecting device |
| CN104394498B (en) * | 2014-09-28 | 2017-01-18 | 北京塞宾科技有限公司 | A three-channel holographic sound field playback method and sound field collecting device |
| CN107241671A (en) * | 2017-07-01 | 2017-10-10 | 邓永林 | A kind of sound system audio processing method and intelligent sound processing system |
| CN109686348A (en) * | 2018-12-13 | 2019-04-26 | 广州艾美网络科技有限公司 | A kind of audio processing system restoring professional audio |
| CN111586527A (en) * | 2020-04-28 | 2020-08-25 | 重庆西原楼宇自动化工程有限公司 | Intelligent voice processing system |
| CN112820256B (en) * | 2021-01-14 | 2022-06-14 | 四川湖山电器股份有限公司 | Reverberation method and system based on improved feedback delay network |
| CN113470669A (en) * | 2021-05-26 | 2021-10-01 | 广州市迪士普音响科技有限公司 | Digital audio processing method and system |
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Address after: 621000 Mianyang city of Sichuan province Youxian Economic Experimental Zone in the road No. 36 Patentee after: Sichuan Hushan electric Limited by Share Ltd Address before: 621000 Mianyang city of Sichuan province Youxian Economic Experimental Zone in the road No. 36 Patentee before: Sichuan Hushan Electronic Co., Ltd. |