CN101426159A - Pre-calibrating acoustic equalizing apparatus - Google Patents
Pre-calibrating acoustic equalizing apparatus Download PDFInfo
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- CN101426159A CN101426159A CNA2008100730070A CN200810073007A CN101426159A CN 101426159 A CN101426159 A CN 101426159A CN A2008100730070 A CNA2008100730070 A CN A2008100730070A CN 200810073007 A CN200810073007 A CN 200810073007A CN 101426159 A CN101426159 A CN 101426159A
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Abstract
A preconditioning acoustic equalization device adds an adjustor before the alignment circuit of the equalization setting device. The adjustor has a frequency control circuit, a signal generator circuit, a radio-voltage amplifier circuit, and a microphone, wherein, the radio-voltage amplifier circuit is connected with a comparison circuit and a display circuit and adjustment circuit, and the frequency control circuit is provided with a frequency reference and a plurality of dividing frequencies. The preconditioning acoustic equalization method includes: adjusting the audio by the adjuster before playing back the audio, each frequency transmits a frequency reference standard point signal and reference point signals of each dividing frequency through the signal generator circuit, the sound amplifier and the horn broadcasting the signals, the microphone receiving the signal voices at the listening point, a comparison circuit comparing the strength of the obtained signals with the standard value to display by the display circuit, the alignment circuit modulating the signals so that the strength of the signals of each dividing frequency point is equal to that of the standard point, and finally playing the music after completing the correction capable of correcting the acoustics frequency spectrum distortion problem caused by the audio equipment and space.
Description
Technical field:
The present invention system is meant a kind of pre-calibrating acoustic equalizing apparatus especially about change structures such as a kind of sound equipments.
Background technology:
Known sound equipment equalizer, known just we are existing at present, know traditionally.Shown in first figure, player when sound equipment signal source, Source Music, television set, CD-audio player, the audio-visual machine of DVD, accompanying video, tuner etc., after sound signal being connected to the input of equalizer, after sound signal directly passes through each frequency wave amplitude adjustment of equalizer (be equivalent to the present invention adjustment circuit partly) output to again and contain the size sound state that volume is adjusted circuit, through the playback of sound amplifying circuit promotion loudspeaker.Be the frequency preset point to be carried out the arbitrarily adjustment of wave amplitude with hobby at this moment, give no thought to real sound equipment equilibrium problem in manual mode; That is to say general sound system or high, medium and low sound is arranged, tonequality control (Tone Control) or figure etc. are changed adjusting devices such as tonequality control, yet can't calibrate, generally only rely on the arbitrarily control of individual sense of hearing, hobby, can't correctly adjust and obtain normal balanced frequency and wave amplitude response.Sound equipment playback equipment especially its frequency response of loudspeaker is difficult for balanced, and listening space is according to its size, can be in various characteristic frequency, produce sound standing wave (Standing Wave), cause sound intensity to change, just form crest and trough, cause the distortion of wave amplitude size when listening to, cause the sense of hearing of senior middle school's low frequency tonequality unbalanced, uncomfortable at listening space.This is the problem that the sound equipment playback exists always, also is the sound equipment disadvantage that is difficult to resolve.
Kind of method is arranged with each equipment independently, as signal generator (Signal Generator) spectrum analyzer (Spectrum Analyzer), test microphone (Test Microphone), graphic equalizer (Graphic Equalizer), audifier (Audio Amplifier), horn system (Speaker System) etc., these equipment are installed use together, being expensive tester, is the purposes of professional and technical personnel's operational testing and adjustment and the device of on-fixed use.Use measurement equipment such as above-mentioned professional sound equipment test macro, it mainly is to adjust large-scale listening spaces such as music hall, theatre, stage as test, test its roomage response, metope curve between modified spatial, modify and change decoration or install space sound equipment diffuser plate or sound-absorbing material etc. in addition additional so that reduce the space standing wave, improve and listen to effect etc., yet these methods are expensive scattered device and tests, and these professional equipment are bulky.User for general listening space appreciation music is unable to reach.
Hence one can see that, known sound equipment is not need to proofread and correct, correct acoustics is that everybody pursues, known equalizer and tonequality control are simple fancy settings, in order to obtain real former sound reproducing, for the article of more realistic demand are provided, the inventor researches and develops, use the inevitable problem that is produced to solve known sound equipment.
Summary of the invention:
The present invention's main purpose is to provide a kind of pre-calibrating acoustic equalizing apparatus, and the defective that ripple good fortune size is unbalanced and the space standing wave disturbs when solving the sound equipment playback that causes in sound appliances loudspeaker and space is can promote the texture of listening to sound equipment greatly; Adjust the wave amplitude sizes values (gain or pad value) of each Frequency point on the equalizing apparatus with the microphone radio reception of setting up, allow each wave amplitude equalizations, to revise the problem of whole broadcast equipment such as amplifier, the big or small metamorphopsic distortion of the caused wave amplitude of loudspeaker and space through the Frequency point adjusted.If sound equipment all is when recording with playback with the present invention, can reappear the purpose of the more approaching former sound of frequency spectrum (frequency and wave amplitude).
The technical scheme that technical solution problem of the present invention is adopted: for reaching above-mentioned purpose, the present invention's structure is: add an adjuster before the adjustment circuit of setting apparatus such as grade, adjuster has a frequency control circuit, a signal generating circuit, one radio reception voltage amplifier circuit is connected with a microphone, the radio reception voltage amplifier circuit is provided with a comparison circuit and a display circuit and the adjustment circuit that waits the change setting apparatus, what that is to say adjuster partly becomes new equalizer for inserting to wait in the change setting apparatus, and equalizer can have one and interrogates the source options button; Be provided with a Test Switchboard before signal generator, signal generating circuit and frequency control circuit join, and signal generating circuit joins with the adjustment circuit; A change setting apparatus and a player are joined; Microphone system is connected to the radio reception voltage amplifier circuit through a microphone jack, compare after display circuit shows the radio reception state by comparison circuit and normal voltage, frequency control circuit is provided with a reference frequency and number dividing frequency, each Frequency point is equipped with a test starting button and and starts display lamp, at first send the reference frequency signal, the sound signal that sends through player through spatial transmission to the microphone that is placed on listening location, be connected to microphone radio reception voltage amplifier circuit, the radio reception voltage amplifier circuit is provided with a volume and adjusts circuit, one comparison circuit and a display circuit are arranged after the radio reception voltage amplifier circuit, a comparison circuit and a normal voltage are relatively, its comparative result is shown in display circuit with cresset or numerical value, when it shows not the zero point in reference, the adjustment button that one of is connected with volume control circuit by the radio reception voltage amplifier circuit is adjusted to zero, the signal player behind the sound amplifying circuit by the loudspeaker playback, make it become the comparison standard of reference, and then carry out sounding and carrying out corresponding adjustment of each dividing frequency respectively, have increase and decrease because of frequency is different with sound system and space standing wave, adjust corresponding adjustment circuit to the display circuit of its frequency respectively and get final product zero point; Close Test Switchboard after finishing, the setting apparatus such as the present invention's gradeization that adjustment is finished is sent in reconfiguration music news source to, can obtain balance spectral response through calibration by the player sounding again.
The beneficial effect that the present invention produced: solve the deficiencies in the prior art part, a kind of pre-calibrating acoustic equalizing apparatus is provided, the defective that ripple good fortune size is unbalanced and the space standing wave disturbs when solving the sound equipment playback that causes in sound appliances loudspeaker and space is can promote the texture of listening to sound equipment greatly; Adjust the wave amplitude sizes values (gain or pad value) of each Frequency point on the equalizing apparatus with the microphone radio reception of setting up, allow each wave amplitude equalizations, to revise the problem of whole broadcast equipment such as amplifier, the big or small metamorphopsic distortion of the caused wave amplitude of loudspeaker and space through the Frequency point adjusted.If sound equipment all is when recording with playback with the present invention, can reappear the purpose of the more approaching former sound of frequency spectrum (frequency and wave amplitude).
Description of drawings:
Fig. 1 is known calcspar.
Fig. 2 is the present invention's calcspar.
Fig. 3 describes sketch for the present invention's panel appearance figure.
Fig. 4 is the present invention's part circuit diagram.
Numeral is described as follows among the figure:
11 news supply sockets, 12 news source options buttons
13 mains switches, 14 Test Switchboards
15 test display lamps, 2 setting apparatus such as grade
21 frequency control circuits, 211 resistance
212 electric capacity, 213 coupled switchs
22 signal generating circuits, 221,222 resistance
23 adjust circuit 231 electric capacity
232 inductance 24,28 start button
25,29 start display lamp 26 reference frequencies
27 several dividing frequency 3 players
31 volumes are adjusted circuit 32 sound amplifying circuits
4 microphones, 40 microphone jacks
41 radio reception voltage amplifier circuits, 42 comparison circuits
43 comparators, 44 display circuits
45 display lamps, 46 normal voltages
47 volumes are adjusted circuit
Embodiment:
Now adjoint embodiment is described in detail as follows architectural feature of the present invention and other effect, purpose:
Shown in second figure to the, four figure, be a kind of pre-calibrating acoustic equalizing apparatus of the present invention, one body is arranged, shown in approximate the 3rd figure of body, have several news supply sockets 11 on the body, each socket 11 can be selected through a news source options button 12, whole as have on the box-like body of frame-mains switch 13 makes up with the adjustment circuit 23 of first-classization setting apparatus 2, the setting apparatus such as grade 2 of body links to each other with a player 3 in addition, player 3 has the volume of a size sound to adjust a circuit 31 and a sound amplifying circuit 32 (being equivalent to the prime expander), and player 3 is generally loudspeaker.
It is characterized in that the adjuster set up partly, adjuster is connected to a Test Switchboard 14, Test Switchboard 14 is provided with a test display lamp 15, with Test Switchboard 14 separately respectively to interrogate the various players that supply socket 11 is connected, body is provided with a microphone jack 40 in addition and is circumscribed with a microphone 4, and connection contains one in the microphone jack 40 has volume to adjust the radio reception voltage amplifier circuit 41 of circuit.
When wanting pre-school, need open Test Switchboard 14 earlier; See also second figure, the signal of adjuster is opened by system with Test Switchboard 14, Test Switchboard 14 links to each other with a signal generating circuit 22, and simultaneously the signal access of signal generating circuit 22 etc. is changed adjustment circuit 23 places of setting apparatus 2, a signal generating circuit 22 and a frequency control circuit 21 join, and make frequency control circuit 21 have reference frequency 26 and several dividing frequencies 27.Each frequency is equipped with one and starts a button 24,28 and a startup display lamp 25,29, at first send the signal sound by reference frequency 26, this signal sound can be adjusted the adjustment that circuit 31 is made the sound size by volume, and the adjustment of this sound is that the volume sensation of listening to the sound horn of player 3 according to the operator adjusts.Moreover the signal sound receives to microphone 4 through spatial transmission and amplifies through the sound horn of player 3.
Wherein microphone 4 can be the special equipment of broadband type, be provided with a comparison circuit 42 and a display circuit 44 through radio reception voltage amplifier circuit 41, a comparison circuit 42 and a normal voltage 46 are through a comparator 43 relatively, its comparative result is shown corresponding numerical values recited (as shown in the 3rd figure) or shows (not icon, it can be to save formula LED or LCD as seven of 8 fonts) in the numeral of display circuit 44 with the numerical value of IC control with one of display lamp 45 of display circuit 44 row cresset.
When it is positioned at non-zero points when the demonstration of reference frequency (corresponding cresset or numerical value), can adjusts circuit 47 controls by the volume that radio reception voltage amplifier circuit 41 one of is connected with microphone 4 and adjust to zero, make it become the standard value of comparison.And then carry out the pronunciation and the adjustment of each dividing frequency 27 respectively.
General setting 1000 (1K) HZ is a reference frequency, can be by crossover frequency point between the audiorange of 16HZ to 20KHZ or only at low-frequency range 18 ~ 180HZ for example, OCTIVE cuts into 18 according to 1/3 octave component, 23,29,36,45,57,72,90,114,143,180HZ equifrequent point, this be because in the general sound appliances with the most difficult the carrying out of LF-response of loudspeaker, loudspeaker are placed also can influence the low frequency volume from behind wall locations distance, also for reducing the circuit complexity, so only making low frequency, handles present embodiment, because of the frequency difference has volume (ripple good fortune) increase and decrease size variation with respect to sound appliances and space standing wave, adjustment button to the display circuit 44 of adjusting the corresponding adjustment circuit 23 of its frequency respectively successively got final product the zero point that equates; Close Test Switchboard 14 after adjustment is finished, the music player signal is connected to calibrated setting apparatus such as grade 2, behind sound amplifying circuit 32 by player 3 sounding.
Are R resistance 211 and C electric capacity 212 component frequency control circuits 21 that op operational amplifier and a pair of resistance 221 and 222 are made gain controlling and RC bridge circuit with Wien bridge circuit (Wien Bridge) signal generating circuit 22 shown in the 4th figure.Signal generating circuit 22 has a plurality of coupled switchs 213, and the resistance 211 in the change circuit or the numerical value of electric capacity 212 can change frequency of oscillation.Numerical value Deng electric capacity 231 in the change setting apparatus 2 and inductance 232 is the assembly of decision frequency, corresponding with the frequency of oscillation of frequency control circuit 21 Deng inductance 232 electric capacity 231 of changing frequency setting, the adjustment circuit 23 that setting apparatus such as grade 2 is made up of variable resistor can change that magnification ratio increases to the right or decay left.
Partial circuit figure one comparison circuit 42 of the 4th figure, a comparator 43, a display circuit 44 and are arranged a display lamp 45 and a normal voltage 46, are the simplification actual circuit structure with respect to the calcspar of second figure.
Structure in sum, the present invention's utilization adds microphone circuit and comparison circuit forms semi-automatic associative mode, the setting that allows the user can the carry out reference frequency like a cork some adjustment for referencial use control of making zero, follow and carry out the corresponding adjustment control of making zero of each Frequency point, make the sound equipment total system contain roomage response, all become the balance spectral response of approximate testization, no matter therefore the mistake of space size or sound appliances can both be carried out the action in pre-school, be different from the tonequality control mode of commonly using of freely adjusting fully, therefore the present invention allows sound appliances and all size space that best alignment is arranged, the effect of listening to the frequency spectrum that averages out, meaning is promptly as long as be apt to the present invention in various places, make the undistorted better situation that reaches former sound reproducing of frequency response balance of actual listening space, so the present invention can provide fine usability and application, be one fully with known different mechanism.
The above is the detailed description of the embodiment of the invention and graphic, be not to be used for limiting the present invention, all scopes of the present invention should be as the criterion with following claim, and the embodiment and the approximate construction of the variation similar with it of the spirit of all claims all should be contained among the present invention.
Claims (3)
1, a kind of pre-calibrating acoustic equalizing apparatus, it is characterized in that: it contains a first-classization setting apparatus and an adjuster, wherein etc. the change setting apparatus for having the adjustment circuit of various frequencies, for before the setting apparatus such as grade, adding adjuster, adjuster has a frequency control circuit, one signal generating circuit, one radio reception voltage amplifier circuit, one comparison circuit, one display circuit, signal generating circuit with etc. the adjustment circuit of change setting apparatus join, signal generator and frequency control circuit join, the frequency control circuit correspondence is provided with reference frequency and number dividing frequency, a radio reception voltage amplifier circuit and a microphone join, radio reception voltage amplifier circuit and comparison circuit join, comparison circuit mat one comparator and a display circuit, comparison circuit can be imported a normal voltage; Join Deng a change setting apparatus and a player, send the reference frequency signal earlier, receive through spatial transmission to microphone by the player sounding, be connected to comparison circuit through the radio reception voltage amplifier circuit, comparison circuit and normal voltage are relatively, with its comparative result to show in display circuit, when its non-zero points, adjust circuit by one of radio reception voltage amplifier circuit volume, adjust to zero, make its standard point that becomes comparison, carry out the playback and the adjustment of each dividing frequency then respectively, the adjustment circuit of adjusting respectively in the corresponding setting apparatus such as grade of each frequency gets final product zero point by display circuit, just can allow player through the setting apparatus such as gradeization by the player sounding.
2, pre-calibrating acoustic equalizing apparatus according to claim 1 is characterized in that: wherein be provided with a Test Switchboard before signal generator.
3, pre-calibrating acoustic equalizing apparatus according to claim 1 is characterized in that: wherein each Frequency point of frequency control circuit is equipped with a test starting button and a startup display lamp.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008100730070A CN101426159A (en) | 2008-11-21 | 2008-11-21 | Pre-calibrating acoustic equalizing apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008100730070A CN101426159A (en) | 2008-11-21 | 2008-11-21 | Pre-calibrating acoustic equalizing apparatus |
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| Publication Number | Publication Date |
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| CN101426159A true CN101426159A (en) | 2009-05-06 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2008100730070A Pending CN101426159A (en) | 2008-11-21 | 2008-11-21 | Pre-calibrating acoustic equalizing apparatus |
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| CN (1) | CN101426159A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102104822A (en) * | 2009-12-18 | 2011-06-22 | 新唐科技股份有限公司 | Audio frequency adjusting system and method |
| CN101621728B (en) * | 2009-06-25 | 2013-03-06 | 北京卓锐微技术有限公司 | Method and device for calibrating sensitivity of microphone |
| CN103090963A (en) * | 2011-11-07 | 2013-05-08 | 技嘉科技股份有限公司 | Volume detection method and volume detection device |
| TWI581096B (en) * | 2012-03-30 | 2017-05-01 | Zeroplus Technology Co Ltd | Signal display method |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0998168A1 (en) * | 1998-06-17 | 2000-05-03 | Sound Advance Systems, Inc. | Compensation system for planar loudspeakers |
| CN1521944A (en) * | 2003-01-23 | 2004-08-18 | 日本先锋公司 | Sound correction system, sound correction method and sound correction apparatus |
| CN1574616A (en) * | 2003-05-30 | 2005-02-02 | 松下电器产业株式会社 | Audio processing apparatus |
| CN1717117A (en) * | 2004-07-02 | 2006-01-04 | 鸿富锦精密工业（深圳）有限公司 | A kind of voice output with compensation characteristic |
| JP4125217B2 (en) * | 2003-11-04 | 2008-07-30 | 日本電信電話株式会社 | Sound field control method and apparatus for implementing the method |
-
2008
- 2008-11-21 CN CNA2008100730070A patent/CN101426159A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0998168A1 (en) * | 1998-06-17 | 2000-05-03 | Sound Advance Systems, Inc. | Compensation system for planar loudspeakers |
| CN1521944A (en) * | 2003-01-23 | 2004-08-18 | 日本先锋公司 | Sound correction system, sound correction method and sound correction apparatus |
| CN1574616A (en) * | 2003-05-30 | 2005-02-02 | 松下电器产业株式会社 | Audio processing apparatus |
| JP4125217B2 (en) * | 2003-11-04 | 2008-07-30 | 日本電信電話株式会社 | Sound field control method and apparatus for implementing the method |
| CN1717117A (en) * | 2004-07-02 | 2006-01-04 | 鸿富锦精密工业（深圳）有限公司 | A kind of voice output with compensation characteristic |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101621728B (en) * | 2009-06-25 | 2013-03-06 | 北京卓锐微技术有限公司 | Method and device for calibrating sensitivity of microphone |
| CN102104822A (en) * | 2009-12-18 | 2011-06-22 | 新唐科技股份有限公司 | Audio frequency adjusting system and method |
| CN103090963A (en) * | 2011-11-07 | 2013-05-08 | 技嘉科技股份有限公司 | Volume detection method and volume detection device |
| CN103090963B (en) * | 2011-11-07 | 2018-03-13 | 技嘉科技股份有限公司 | Volume detection method and volume detection means |
| TWI581096B (en) * | 2012-03-30 | 2017-05-01 | Zeroplus Technology Co Ltd | Signal display method |
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Application publication date: 20090506 |