CN205812392U - Sound boxes detecting device - Google Patents
Sound boxes detecting device Download PDFInfo
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- CN205812392U CN205812392U CN201620443846.7U CN201620443846U CN205812392U CN 205812392 U CN205812392 U CN 205812392U CN 201620443846 U CN201620443846 U CN 201620443846U CN 205812392 U CN205812392 U CN 205812392U
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Abstract
This utility model provides a kind of sound boxes detecting device, including: player, it is for playing out the output of test signal to tested audio amplifier；Microphone, it is for gathering the output signal of this tested audio amplifier, and the signal of collection is sent to testing circuit；Testing circuit, it is connected with this microphone, the signal receiving this microphone pick the signal detecting reception are at the energy value of predetermined frequency band, and determine whether the loudspeaker unit of the described tested audio amplifier being operated in described predetermined frequency band damages according to the energy value of described predetermined frequency band.Pass through this utility model, it is possible to automatically detect the loudspeaker unit whether having damage in audio amplifier, promote the accuracy of diagnosis, reduce audio amplifier maintenance cost in use.
Description
Technical field
This utility model relates to electroacoustics field, particularly relates to whether a kind of loudspeaker unit detected in audio amplifier has damage
Sound boxes detecting device.
Background technology
It is known that audio amplifier is made up of loudspeaker unit, many loudspeaker box are made up of multiple speakers, if audio amplifier
In loudspeaker unit damage, it is common that use artificial or professional electroacoustical measurement add artificial mode carry out detection judge.
Utility model content
In the method whether loudspeaker unit in prior art determines audio amplifier damages, owing to needs professional is existing
Field is identified, wastes time and energy, and causes audio amplifier maintenance cost in use higher, also cannot ensure the accuracy of detection.
In order to solve the problems referred to above, whether this utility model provides a kind of loudspeaker unit that can automatically detect in audio amplifier
The sound boxes detecting device damaged, whether it can detect automatically the loudspeaker unit of damage in audio amplifier, promote the standard of diagnosis
Really property, reduces audio amplifier maintenance cost in use.
First aspect according to this utility model embodiment, it is provided that a kind of sound boxes detecting device, this sound boxes detecting device
Including:
Player, it is for playing out the output of test signal to tested audio amplifier；
Microphone, it is for gathering the output signal of this tested audio amplifier, and the signal of collection is sent to testing circuit；
Testing circuit, it is connected with this microphone, and the signal receiving this microphone pick the signal detecting reception exist
The energy value of predetermined frequency band, and this tested audio amplifier being operated in this predetermined frequency band is determined according to the energy value of this predetermined frequency band
Whether loudspeaker unit damages.
Second aspect according to this utility model embodiment, it is provided that a kind of such as this sound boxes detecting device of first aspect,
Wherein, this testing circuit, when this energy value is less than predetermined threshold value, determines that the loudspeaker unit being operated in this predetermined frequency band damages；
When this energy value is equal to or higher than this predetermined threshold value, determine that the loudspeaker unit being operated in this predetermined frequency band does not damage.
The third aspect according to this utility model embodiment, it is provided that a kind of such as this sound boxes detecting device of first aspect,
Wherein, this testing circuit includes:
Amplifier, it, for receiving the signal of this microphone pick, is sent to wave filter after being amplified；
Wave filter, its signal after receiving amplification, and the signal after this amplification is filtered；Wherein this wave filter
Pass band width determine according to this predetermined frequency band, the mid frequency of this wave filter is identical with the mid frequency of this test signal；
Comparator, its signal after accepting filter, and compare with preset signals；Signal energy after the filtering
During less than this preset signals energy, determine that the loudspeaker unit being operated in this predetermined frequency band damages；Signal energy after the filtering
During more than or equal to this preset signals energy, determine that the loudspeaker unit being operated in this predetermined frequency band does not damage.
Fourth aspect according to this utility model embodiment, it is provided that a kind of such as this sound boxes detecting device of first aspect,
Wherein, this testing circuit also includes:
Selector, it, for when this test signal is multichannel, selects a sound channel output from this multichannel successively
To this player.
The 5th aspect according to this utility model embodiment, it is provided that a kind of such as this sound boxes detecting device of first aspect,
Wherein, this sound boxes detecting device also includes:
Data collecting card, it is for receiving the testing result of this testing circuit；And/or
Remote server, it is for receiving the testing result of this testing circuit.
The 6th aspect according to this utility model embodiment, it is provided that a kind of such as this sound boxes detecting device of first aspect,
Wherein, when this tested audio amplifier is two loudspeaker box, this testing circuit includes treble band bandpass filter and bass band bandpass filter；
When this tested audio amplifier is three-way speakers, this testing circuit includes treble band bandpass filter, middle pitch bandpass filtering
Device and bass band bandpass filter.
The 7th aspect according to this utility model embodiment, it is provided that a kind of such as this sound boxes detecting device of first aspect,
Wherein, this microphone is configured in movie theatre, and this tested audio amplifier is for playing the audio frequency in movie theatre.
Eighth aspect according to this utility model embodiment, it is provided that a kind of sound boxes detecting device, this sound boxes detecting device
Including:
Wave filter, it is for being filtered microphone signal of collection from tested audio amplifier exports, leading to of this wave filter
Band bandwidth determines according to predetermined frequency band；
Detector, its signal after detection filter is at the energy value of this predetermined frequency band, according to the energy of this predetermined frequency band
Value determines whether the loudspeaker unit of this tested audio amplifier being operated in this predetermined frequency band damages.
The 9th aspect according to this utility model embodiment, it is provided that a kind of such as this sound boxes detecting device of eighth aspect,
Wherein, this sound boxes detecting device also includes:
Microphone, it is for gathering the output signal of this tested audio amplifier；And/or
Amplifier, it, for receiving the signal of this microphone pick, is sent to this wave filter after being amplified.
The tenth aspect according to this utility model embodiment, it is provided that a kind of such as this sound boxes detecting device of eighth aspect,
Wherein, this sound boxes detecting device also includes:
Controller, it is used for controlling player and the output of test signal is played out to this tested audio amplifier.
Having the beneficial effects that of this utility model embodiment: by the structure of sound boxes detecting device of the present utility model, energy
Enough loudspeaker units whether having damage in audio amplifier that automatically detects, promote the accuracy of diagnosis, reduces audio amplifier in use
Maintenance cost.
With reference to explanation hereinafter and accompanying drawing, disclose in detail particular implementation of the present utility model, specify this practicality
Novel principle can be in adopted mode.It should be understood that the most therefore embodiment of the present utility model is subject in scope
To limiting.In the range of the spirit and terms of claims, embodiment of the present utility model includes many changes, repaiies
Change and be equal to.
The feature described for a kind of embodiment and/or illustrate can be in same or similar mode one or more
Other embodiment individual uses, combined with the feature in other embodiment, or substitute the feature in other embodiment.
Accompanying drawing explanation
Of the present utility model a lot of aspect be may be better understood with reference to following accompanying drawing.Parts in accompanying drawing are not into ratio
Example is drawn, and is intended merely to illustrate principle of the present utility model.For the ease of illustrating and describing portions more of the present utility model
Point, in accompanying drawing, corresponding part may be exaggerated or minimized.Described in an accompanying drawing of the present utility model or a kind of embodiment
Element and feature can combine with the element shown in one or more other accompanying drawing or embodiment and feature.This
Outward, in the accompanying drawings, similar label represents parts corresponding in several accompanying drawing, and may be used to indicate in more than one embodiment
The corresponding component used.In the accompanying drawings:
Fig. 1 is that this utility model embodiment 1 middle pitch boxes detecting device constitutes schematic diagram；
Fig. 2 is the test signal schematic representation that in this utility model embodiment 1, three-way speakers is corresponding；
Fig. 3 is that in this utility model embodiment 1, test signal is multichannel file schematic diagram；
Fig. 4 is that this utility model embodiment 1 middle pitch boxes detecting device constitutes schematic diagram；
Fig. 5 is that in this utility model embodiment 1, testing circuit constitutes schematic diagram；
Fig. 6 is to test signal spectrum and frequency characteristic of filter relation schematic diagram in this utility model embodiment 1；
Fig. 7 is that in this utility model embodiment 1, three-way speakers testing circuit constitutes schematic diagram；
Fig. 8 is that this utility model embodiment 2 middle pitch boxes detecting device constitutes schematic diagram；
Fig. 9 is that this utility model embodiment 2 middle pitch boxes detecting device constitutes schematic diagram；
Figure 10 is that this utility model embodiment 2 middle pitch boxes detecting device constitutes schematic diagram；
Figure 11 is that this utility model embodiment 2 middle pitch boxes detecting device constitutes schematic diagram.
Detailed description of the invention
Referring to the drawings, by description below, the aforementioned and further feature of this utility model embodiment will become bright
Aobvious.These embodiments are exemplary, are not to restriction of the present utility model.
With reference to the accompanying drawings detailed description of the invention of the present utility model is illustrated.
Embodiment 1
This utility model embodiment 1 provides a kind of sound boxes detecting device.Fig. 1 is this sound boxes detecting device schematic diagram, as
Shown in Fig. 1, this sound boxes detecting device 100 includes:
Player 101, it is for playing out the output of test signal to tested audio amplifier；
Microphone 102, it is for gathering the output signal of this tested audio amplifier, and the signal of collection is sent to testing circuit
103；
Testing circuit 103, it is connected with this microphone 102, receives the signal of this microphone pick and detect reception
Signal is at the energy value of predetermined frequency band, and determines that according to the energy value of this predetermined frequency band to be operated in this of this predetermined frequency band tested
Whether the loudspeaker unit of audio amplifier damages.
In the present embodiment, this tested audio amplifier is loudspeaker box, and such as two divided-frequency audio amplifier, three-way speakers etc. divide sound more
Case, loudspeaker box is made up of different loudspeaker units, wherein, for two divided-frequency audio amplifier, comprises high pitch loudspeaker unit and low
Sound loudspeaker unit；For three-way speakers, comprise high pitch loudspeaker unit, Squawker unit and woofer list
Unit.
In order to differentiate which loudspeaker unit in loudspeaker box damages, and avoid damage to tested speaker of voice box unit,
Improving and identify sensitivity, reduce erroneous judgement, in the present embodiment, this test signal only comprises the work of each loudspeaker unit of tested audio amplifier
Make band component, and do not comprise other band component.
Such as, for two divided-frequency audio amplifier, this test signal packet is containing its high pitch loudspeaker unit and woofer unit
Working band composition, i.e. comprises high pitch and two band component of bass；For three-way speakers, this test signal packet contains its high pitch
The working band composition of loudspeaker unit, Squawker unit and woofer unit, i.e. comprises high pitch, middle pitch and bass
Three band component.
Wherein, when for tested audio amplifier design test signal, the allusion quotation of each loudspeaker unit of tested audio amplifier can first be determined
Type operating frequency, thereby determines that the mid frequency of test signal, and the bandwidth that typical operating frequency is corresponding can select to make a reservation for
Sound interval, such as 0.33-2 octave, with improve identify sensitivity, reduce erroneous judgement.
Fig. 2 is the test signal schematic representation that in the present embodiment, three-way speakers is corresponding, as in figure 2 it is shown, three-way speakers
The typical operating frequency of high pitch loudspeaker unit, Squawker unit and woofer unit is respectively f1, f2, f3, thus
Determine the mid frequency of test signal, f1, f2, f3Bandwidth selection 0.33 octave.
In the present embodiment, this test signal can be the forms such as audio file, such as WAV, MP3, and this audio file can
To be single channel files or multichannel file.But this utility model is not limited to this, such as, can also is that other file type；With
Under illustrate as a example by multichannel file.
Fig. 3 is that in the present embodiment, test signal is multichannel file schematic diagram, as it is shown on figure 3, this test signal is 7.1 sound
The wav file in road, this sound channel be respectively L channel, center channels, R channel, right surround sound channel, rear right channel, left subsequent channel,
Left around sound channel, LFE sound channel.
In the present embodiment, when testing signal and being multichannel file, need each sound channel is tested one by one, surveying
When trying a certain sound channel, other sound channels not output signal, thus, the present embodiment additionally provides a kind of sound boxes detecting device.Fig. 4 is this
Sound boxes detecting device schematic diagram, as shown in Figure 4, this sound boxes detecting device 400 includes: player 101, microphone 102, detection electricity
Road 103, its embodiment and the player 101 in Fig. 1, microphone 102, testing circuit 103 is identical, is not repeated herein.
In the present embodiment, this sound boxes detecting device 400 also includes:
Selector 104, it is connected with player 101, for when this test signal is multichannel, from this multichannel
Select a sound channel output to the player 101 of tested audio amplifier successively.
Wherein, after completing the detection of sound channel of this selection, selector 104 selects next sound channel output to by acoustic
The player 101 of case, and detect.
In the present embodiment, test signal, by sound card or other kinds of interface, is exported to by acoustic by player 101
Case, wherein, when this test signal is multichannel file, this sound card is required to support the output of multi-channel signal.
In the present embodiment, in order to improve identification sensitivity, reduce erroneous judgement, at player 101, test signal is exported extremely
During tested audio amplifier, can be by arranging power amplifier (not shown), this power amplifier is arranged on player and tested audio amplifier
Between or be arranged on tested audio amplifier and collect, for adjusting the output volume of test signal, for example, it is possible to utilize power amplification
Device so that the output of tested audio amplifier about at 80dBC, to avoid causing owing to volume is too small identifying that sensitivity is too low, reduces inspection
Survey accuracy.
In the present embodiment, microphone 102, also referred to as microphone, mike, it can be Whole frequency band microphone, such as electret
Body capacitance microphone, moving-coil microphone etc., for gathering the output signal of tested audio amplifier, will the sound of tested audio amplifier output
Signal is converted into the signal of telecommunication.
In the present embodiment, microphone 102 can be arranged as required to the relative position of tested audio amplifier, such as, at quilt
This microphone, in time playing the audio frequency in movie theatre, can be arranged in movie theatre, wherein, be multichannel at audio frequency by acoustic case
Time, in order to avoid identification error is relatively big, microphone can be arranged on the top ceiling of movie theatre central authorities；Such as, tested
Audio amplifier for play individual PC in audio frequency time, this microphone can be arranged near tested audio amplifier, the present embodiment not with
This is as restriction.
In the present embodiment, the signal gathered is sent into testing circuit 103, the work of this testing circuit 103 by microphone 102
Principle is, when a certain loudspeaker unit of tested audio amplifier damages, this loudspeaker unit corresponding frequency band output energy necessarily falls sharply,
Testing circuit 103, when this energy value being detected less than predetermined threshold value, determines that the loudspeaker unit being operated in this predetermined frequency band damages
Bad；When this energy value being detected equal to or higher than this predetermined threshold value, determine that the loudspeaker unit being operated in this predetermined frequency band does not has
There is damage.
Fig. 5 is that in the present embodiment, this testing circuit 103 constitutes schematic diagram, and as shown in Figure 4, this testing circuit 103 includes:
Amplifier 501, it, for receiving the signal that this microphone 102 gathers, is sent to wave filter 402 after being amplified；
Wave filter 502, its signal after receiving amplification, and the signal after this amplification is filtered；
Comparator 503, its signal after accepting filter, and compare with preset signals；Signal after the filtering
When energy is less than this preset signals energy, determine that the loudspeaker unit being operated in this predetermined frequency band damages；Signal after the filtering
When energy is more than or equal to this preset signals energy, determine that the loudspeaker unit being operated in this predetermined frequency band does not damage.
In the present embodiment, this testing circuit can use analog circuit or digital circuit, i.e. this amplifier 501, filtering
Device 502, comparator 503 can be simulations, it is also possible to be digital.
In the present embodiment, the signal gathered due to microphone 102 has damage, identifies sensitivity for improving, and reduces erroneous judgement,
This testing circuit arranges amplifier 501, and the signal first gathered microphone 102 is amplified processing, and is then fed into wave filter 502
It is filtered.
In the present embodiment, wave filter 502 is for retaining the one-tenth of the loudspeaker unit working band to be detected gathering signal
Point, filter the composition of other frequency bands；Identifying sensitivity to improve, reducing erroneous judgement；Wherein, the number of wave filter can be according to quilt
Loudspeaker unit number to be detected in acoustic case determines, the pass band width of each wave filter is according to the loudspeaker unit of its correspondence
Working band determine, the mid frequency of wave filter is identical with the mid frequency of this test signal.
Wherein, when tested audio amplifier is two loudspeaker box, testing circuit can include two wave filter, is treble band respectively
Bandpass filter and bass band bandpass filter；The work frequency of the pass band width correspondence high pitch loudspeaker unit of treble band bandpass filter
Band, the working band of the pass band width correspondence woofer unit of bass band bandpass filter；
When tested audio amplifier is three-way speakers, testing circuit can include that three treble band bandpass filters, middle vocal cores are logical
Wave filter and bass band bandpass filter, the working band of the pass band width correspondence high pitch loudspeaker unit of treble band bandpass filter,
The working band of the pass band width correspondence Squawker unit of middle pitch band filter, the pass band width of bass band bandpass filter
The working band of corresponding woofer unit.
It should be noted that above only frequency dividing by two illustrates as a example by three frequency division, the logical filter of wherein said treble band
Ripple device and bass band bandpass filter etc. are only object lessons of the present utility model, but this utility model is not limited to this, the most also may be used
To use four frequency dividings etc..Additionally, be also not limited to high pitch and bass etc., such as, can also is that the first filter of corresponding first frequency
Ripple device, second wave filter etc. of corresponding second frequency.
Owing to the band component of test signal is also corresponding with the working band of loudspeaker unit, the therefore passband of wave filter
Bandwidth can also determine according to the band component of test signal.
Fig. 6 is test signal spectrum and the signal of frequency characteristic of filter relation in the present embodiment for three-way speakers
Figure, as shown in Figure 6, solid line represents test signal spectrum, dotted line 601,602,603 the most corresponding basses, middle pitch, the logical filter of treble band
The frequecy characteristic of ripple device, wherein, bass, middle pitch, mid frequency and the mid frequency weight testing signal of treble band bandpass filter
Close.
In the present embodiment, filtered signal is compared by comparator 503 with preset signals, after the filtering signal energy
When amount is less than this preset signals energy, determining that the loudspeaker unit being operated in this frequency band damages, signal energy is more than after the filtering
Or during equal to this preset signals energy, determine that the loudspeaker unit being operated in this frequency band does not damage, and wherein, this comparator 503
The magnitude relationship of filtered signal energy and this preset signals energy, this comparator can be judged by the way of numeral or simulation
Number identical with filter number.
Such as, when this testing circuit is analog circuit, this comparator 503 can by compare filtered signal level and
Preset signals level height, judges the magnitude relationship of filtered signal energy and this preset signals energy；Wherein, after the filtering
When signal level is greater than or equal to preset signals level, represent that filtered signal energy is more than or equal to preset signals energy, i.e.
This loudspeaker unit being operated in corresponding frequency band is normal, does not damage, comparator output high level；Otherwise, after the filtering
When signal level is less than preset signals level, representing that filtered signal energy is less than preset signals energy, i.e. this is operated in correspondence
The loudspeaker unit of frequency band is to damage, comparator output low level；But the present embodiment is not in this, as restriction, the most permissible
Representing that loudspeaker unit damages by comparator output high level, output low level represents that loudspeaker unit is normal, does not damage.
Such as, when this testing circuit is digital circuit, this comparator 503 can be by comparing filtered signal sampled value
The sampled value size of frequency identical with preset signals, judges that the size of filtered signal energy and this preset signals energy is closed
System；Wherein, after the filtering signal sampling value greater than or equal to preset signals sampled value time, represent filtered signal energy more than or
Equal to preset signals energy, i.e. this loudspeaker unit being operated in corresponding frequency band is normal, does not damage, comparator output height
Level；Otherwise, when signal sampling value is less than preset signals sample value after the filtering, represent that filtered signal energy is less than preset signals
Energy, i.e. this loudspeaker unit being operated in corresponding frequency band is to damage, comparator output low level；But the present embodiment not with
This is as restriction, such as, can represent that loudspeaker unit damages by comparator output high level, and output low level represents raises one's voice
Device unit is normal.
In the present embodiment, it is also possible to use additive method to determine the big of filtered signal energy and this preset signals energy
Little relation, for example, it is possible to the signal after being amplified by amplifier 501 is through rectifying and wave-filtering, and gathers DC component, is divided by this direct current
Energy compares with preset signals energy, and the present embodiment is not in this, as restriction.
The structure of this testing circuit is described below as a example by the testing circuit of detection three-way speakers, and Fig. 7 is the present embodiment
Middle three-way speakers testing circuit constitutes schematic diagram, as it is shown in fig. 7, this testing circuit 700 includes:
Amplifier 701, it receives the signal of microphone pick, is sent to wave filter 702,703,704 after being amplified；
Bass band bandpass filter 702, it receives the signal after amplifying, is filtered the signal after amplifying, obtains this letter
Number in the band component of tested audio amplifier woofer cell operation frequency range；
Middle pitch band filter 703, it receives the signal after amplifying, is filtered the signal after amplifying, obtains this letter
Number in the band component of tested audio amplifier Squawker cell operation frequency range；
Treble band bandpass filter 704, it receives the signal after amplifying, is filtered the signal after amplifying, obtains this letter
Number in the band component of tested audio amplifier high pitch loudspeaker cell operation frequency range；
Wherein, this test signal and bass band bandpass filter 702, middle pitch band filter 703, treble band bandpass filter
The relation of the filtering characteristic of 704 as shown in Figure 6, is not repeated herein.
First comparator 705, receives the filtered signal of bass band bandpass filter 702, compares with the first preset signals
Relatively, when signal energy is less than this first preset signals energy after the filtering, determine that woofer unit damages；Believe after the filtering
When number energy is more than or equal to this first preset signals energy, determine that woofer unit does not damage；
Second comparator 706, receives the filtered signal of middle pitch band filter 703, compares with the second preset signals
Relatively, when signal energy is less than this second preset signals energy after the filtering, determine that Squawker unit damages；Believe after the filtering
When number energy is more than or equal to this second preset signals energy, determine that Squawker unit does not damage；
3rd comparator 707, receives the filtered signal of treble band bandpass filter 704, compares with the 3rd preset signals
Relatively, when signal energy is less than the 3rd preset signals energy after the filtering, determines that high pitch loudspeaker unit damages, believe after the filtering
When number energy is more than or equal to the 3rd preset signals energy, determine that high pitch loudspeaker unit does not damage.
Wherein, the detailed description of the invention of each wave filter and comparator is referred to wave filter 502 and comparator 503, herein
Repeat no more.
In the present embodiment, when testing signal and being multichannel file, as it was previously stated, select one successively by selector
Sound channel detects, and wherein, comparator 503 can be identical for the preset signals that each sound channel is arranged, can be different, and it is permissible
Determine according to actual needs.
In the present embodiment, this sound boxes detecting device 400 also includes:
Data collecting card 105 (optional), it is for the testing result of receiving test circuit 103；And/or
Remote server 106 (optional), it is for the testing result of receiving test circuit 103, thus realizes long-range sound
Case diagnoses.
Wherein, this remote server 106 can also will test signal output to tested by remotely controlling this player 101
Audio amplifier plays out, or this this remote server 106 can also remotely read the testing result in data collecting card 105, with
Realize the long-range control of audio amplifier detection.
Wherein, when testing circuit 103 includes comparator 503, it is defeated that this data collecting card 105 can gather comparator 503
The level information gone out.
In the present embodiment, this sound boxes detecting device also includes: memorizer (optional, not shown), and it is used for storing this number
The information gathered according to capture card.
Structure by sound boxes detecting device of the present utility model, it is possible to automatically detect whether there be raising of damage in audio amplifier
Sound device unit, promotes the accuracy of diagnosis, reduces audio amplifier maintenance cost in use.
Embodiment 2
This utility model embodiment 2 provides a kind of sound boxes detecting device, is used for detecting whether speaker of voice box unit damages
Bad.Fig. 8 is that this sound boxes detecting device constitutes schematic diagram, and as shown in Figure 8, this sound boxes detecting device 800 includes:
Wave filter 801, it is for being filtered the output signal of the tested audio amplifier of microphone pick, this wave filter 802
Pass band width determine according to predetermined frequency band；
Detector 802, its signal after detection filter is at the energy value of this predetermined frequency band, according to this predetermined frequency band
Energy value determines whether the loudspeaker unit of this tested audio amplifier being operated in this predetermined frequency band damages.
Wherein, detector 802, when this energy value is less than predetermined threshold value, determines the speaker list being operated in this predetermined frequency band
Unit damages；When this energy value is equal to or higher than this predetermined threshold value, determine that the loudspeaker unit being operated in this predetermined frequency band does not has
Damage.
In the present embodiment, the embodiment of this wave filter 801 and detector 802 is referred to the filtering in embodiment 1
Device 502 and comparator 503, here is omitted.
In the present embodiment, this sound boxes detecting device can also include:
Amplifier 803 (optional), it, for receiving the signal of this microphone pick, is sent to wave filter after being amplified
801, in order to improve and identify sensitivity, reduce erroneous judgement, its embodiment is referred to the amplifier 501 in embodiment 1, the most not
Repeat again.
Fig. 9 is another composition schematic diagram of sound boxes detecting device, as it is shown in figure 9, this sound boxes detecting device 900 includes: filtering
Device 901, detector 902, amplifier 903 (optional), its detailed description of the invention is referred to wave filter 801, detector 802, puts
Big device 803 (optional), is not repeated herein.
In the present embodiment, this sound boxes detecting device can also include:
Microphone 904, it is for gathering the output signal of tested audio amplifier, and sends the signal gathered to amplifier 903
Or wave filter 901；
Its detailed description of the invention is referred to embodiment 1 microphone 102, is not repeated herein.
Figure 10 is another composition schematic diagram of sound boxes detecting device, and as shown in Figure 10, this sound boxes detecting device 1000 includes: filter
Ripple device 1001, detector 1002, amplifier 1003 (optional), its detailed description of the invention is referred to wave filter 1001, detector
1002, amplifier 1003 (optional), it is not repeated herein.
In the present embodiment, this sound boxes detecting device can also include:
Controller 1004, it is used for controlling player and the output of test signal is played out to tested audio amplifier.
Wherein, this test signal detailed description of the invention refer to embodiment 1, is not repeated herein.
Figure 11 is another composition schematic diagram of sound boxes detecting device, and as shown in figure 11, this sound boxes detecting device 1100 includes: filter
Ripple device 1101, detector 1102, amplifier 1103 (optional), controller 1104, its detailed description of the invention is referred to wave filter
1001, detector 1002, amplifier 1003 (optional), controller 1004, it is not repeated herein.
In the present embodiment, this sound boxes detecting device can also include:
Microphone 1105, it is for gathering the output signal of tested audio amplifier, and sends the signal gathered to amplifier
1103 or wave filter 1101；
Its detailed description of the invention is referred to embodiment 1 microphone 102, is not repeated herein.
In the present embodiment, this sound boxes detecting device also includes: data collecting card (optional, not shown) and remote server
(optional, not shown), its detailed description of the invention refer to embodiment 1, is not repeated herein.
Structure by sound boxes detecting device of the present utility model, it is possible to automatically detect whether there be raising of damage in audio amplifier
Sound device unit, promotes the accuracy of diagnosis, reduces audio amplifier maintenance cost in use.
Above in association with specific embodiment, this utility model is described, but those skilled in the art should be clear
Chu, these descriptions are all exemplary, are not the restriction to this utility model protection domain.Those skilled in the art can root
According to spirit of the present utility model and principle, this utility model being made various variants and modifications, these variants and modifications are also in this reality
With in novel scope.
Claims (10)
1. a sound boxes detecting device, it is characterised in that described sound boxes detecting device includes:
Player, it is for playing out the output of test signal to tested audio amplifier；
Microphone, it is for gathering the output signal of described tested audio amplifier, and the signal of collection is sent to testing circuit；
Testing circuit, it is connected with described microphone, and the signal receiving described microphone pick the signal detecting reception exist
The energy value of predetermined frequency band, and determine according to the energy value of described predetermined frequency band and be operated in the described tested of described predetermined frequency band
Whether the loudspeaker unit of audio amplifier damages.
Sound boxes detecting device the most according to claim 1, it is characterised in that described testing circuit is less than at described energy value
During predetermined threshold value, determine that the loudspeaker unit being operated in described predetermined frequency band damages；At described energy value equal to or higher than described
During predetermined threshold value, determine that the loudspeaker unit being operated in described predetermined frequency band does not damage.
Sound boxes detecting device the most according to claim 1, it is characterised in that described testing circuit includes:
Amplifier, it, for receiving the signal of described microphone pick, is sent to wave filter after being amplified；
Wave filter, its signal after receiving amplification, and the signal after described amplification is filtered；Wherein said wave filter
Pass band width determine according to described predetermined frequency band, the mid frequency phase of the mid frequency of described wave filter and described test signal
With；
Comparator, its signal after accepting filter, and compare with preset signals；Signal energy after the filtering is less than
During described preset signals energy, determine that the loudspeaker unit being operated in described predetermined frequency band damages；Signal energy after the filtering
During more than or equal to described preset signals energy, determine that the loudspeaker unit being operated in described predetermined frequency band does not damage.
Sound boxes detecting device the most according to claim 1, it is characterised in that described sound boxes detecting device also includes:
Selector, it, for when described test signal is multichannel, selects a sound channel output from described multichannel successively
To described player.
Sound boxes detecting device the most according to claim 1, it is characterised in that described sound boxes detecting device also includes:
Data collecting card, it is for receiving the testing result of described testing circuit；And/or
Remote server, it is for receiving the testing result of described testing circuit.
Sound boxes detecting device the most according to claim 1, wherein, when described tested audio amplifier is two loudspeaker box, described
Testing circuit includes treble band bandpass filter and bass band bandpass filter；
When described tested audio amplifier is three-way speakers, described testing circuit includes treble band bandpass filter, middle pitch bandpass filtering
Device and bass band bandpass filter.
Sound boxes detecting device the most according to claim 1, wherein, described microphone is configured in movie theatre, described tested
Audio amplifier is for playing the audio frequency in movie theatre.
8. a sound boxes detecting device, it is characterised in that described sound boxes detecting device includes:
Wave filter, it is for being filtered microphone signal of collection from tested audio amplifier exports, the passband of described wave filter
Bandwidth determines according to predetermined frequency band；
Detector, its signal after detection filter is at the energy value of described predetermined frequency band, according to the energy of described predetermined frequency band
Value determines whether the loudspeaker unit of the described tested audio amplifier being operated in described predetermined frequency band damages.
Sound boxes detecting device the most according to claim 8, it is characterised in that described sound boxes detecting device also includes:
Microphone, it is for gathering the output signal of described tested audio amplifier；And/or
Amplifier, it, for receiving the signal of this microphone pick, is sent to described wave filter after being amplified.
Sound boxes detecting device the most according to claim 8, it is characterised in that described sound boxes detecting device also includes:
Controller, it is used for controlling player and the output of test signal is played out to described tested audio amplifier.
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| CN107659882A (en) * | 2017-08-31 | 2018-02-02 | 安徽信息工程学院 | Classroom sound equipment test device |
| CN108124232A (en) * | 2016-11-29 | 2018-06-05 | 深圳市三诺数字科技有限公司 | A kind of sound equipment test system and test method |
| CN109121061A (en) * | 2018-09-29 | 2019-01-01 | 惠州市德赛西威汽车电子股份有限公司 | A kind of volume output balance test system of main system of audio |
| CN109698998A (en) * | 2018-12-20 | 2019-04-30 | 王跃 | A kind of fault diagnosis system and its diagnostic method of sound system |
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| CN112929808A (en) * | 2021-02-05 | 2021-06-08 | 四川湖山电器股份有限公司 | Method, module and system for detecting whether campus broadcasting equipment can work normally |
| US11326935B2 (en) | 2019-10-21 | 2022-05-10 | Wistron Corporation | Method and system for vision-based defect detection |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108124232A (en) * | 2016-11-29 | 2018-06-05 | 深圳市三诺数字科技有限公司 | A kind of sound equipment test system and test method |
| CN107659882A (en) * | 2017-08-31 | 2018-02-02 | 安徽信息工程学院 | Classroom sound equipment test device |
| CN109121061A (en) * | 2018-09-29 | 2019-01-01 | 惠州市德赛西威汽车电子股份有限公司 | A kind of volume output balance test system of main system of audio |
| CN109698998A (en) * | 2018-12-20 | 2019-04-30 | 王跃 | A kind of fault diagnosis system and its diagnostic method of sound system |
| CN109698998B (en) * | 2018-12-20 | 2020-04-24 | 乐清市智格电子科技有限公司 | Fault diagnosis system and method for sound system |
| US10863294B1 (en) | 2019-10-21 | 2020-12-08 | Wistron Corporation | Method and system for vision-based defect detection |
| TWI761715B (en) * | 2019-10-21 | 2022-04-21 | 緯創資通股份有限公司 | Method and system for vision-based defect detection |
| US11326935B2 (en) | 2019-10-21 | 2022-05-10 | Wistron Corporation | Method and system for vision-based defect detection |
| US11636583B2 (en) | 2019-10-21 | 2023-04-25 | Wistron Corporation | Method and system for vision-based defect detection |
| CN112929808A (en) * | 2021-02-05 | 2021-06-08 | 四川湖山电器股份有限公司 | Method, module and system for detecting whether campus broadcasting equipment can work normally |
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Address after: 200241 Shanghai city Minhang District Zixing Road No. 588, building 2, 15 Floor Patentee after: TCL-IMAX (SHANGHAI) DIGITAL TECHNOLOGY CO.,LTD. Address before: 200241 Shanghai Road, Dongchuan, building 101, room 5, building 555, room Patentee before: TCL-IMAX (SHANGHAI) DIGITAL TECHNOLOGY CO.,LTD. |
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