CN109889954A - Full range multistage corrective network compensator - Google Patents
Full range multistage corrective network compensator Download PDFInfo
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- CN109889954A CN109889954A CN201910232551.3A CN201910232551A CN109889954A CN 109889954 A CN109889954 A CN 109889954A CN 201910232551 A CN201910232551 A CN 201910232551A CN 109889954 A CN109889954 A CN 109889954A
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- compensator
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- corrective network
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Abstract
The invention discloses a kind of full range multistage corrective network compensators.A kind of full range multistage corrective network compensator of the present invention, comprising: compensator first part is T shape RLC high-order lowpass filter circuit, to provide unit low frequency signal access；Compensator second part, is multiple RLC serial band pass filters, and number is determined by trough quantity to be compensated；And compensator Part III, it is RC extremely high frequency compensator；Wherein, the compensator first part, compensator second part, compensator Part III are connected between source of sound and pronunciation loudspeaker.Beneficial effects of the present invention: scheme is on wired hifi earphone, and cost is relatively low, and earphone volume greatly reduces again；On TWS bluetooth headset, due to the characteristic of unit itself, in addition therefore, having higher sensitivity therefore closer to ear in structure, lower power consumption, cruise duration extends；On TWS bluetooth headset, volume can be made smaller, while sound quality is outstanding.
Description
Technical field
The present invention relates to earphone fields, and in particular to a kind of full range multistage corrective network compensator.
Background technique
Currently, HIFI earphone city, increasingly popularization, cheapization, and with the cancellation of iPhone receiver J-Horner, greatly
The development of bluetooth headset, especially TWS wireless Bluetooth headsets have been pushed greatly.
PlayGear Stealth will have the multiple frequency dividings of multiple units if to reach Hifi grades of sound quality mostly, to obtain perfect frequency
Curve is rung, but this greatly improves material and human cost, and the earphone of single unit production, since there are various waves in frequency response
Spike paddy is extremely difficult to perfect effect.
Wireless headset pure for TWS, inner space and cost limit, and mostly use single action circle earphone greatly in acoustics scheme, lead
Cause sound quality generally weaker, and since battery and circuit board, unit are all placed in inside earphone, it is more huge to result in volume, shadow
Ring wear comfort.
There are following technical problems for traditional technology:
Wired HIFI grades of earphone, using the more frequency splitting technologies of multiple-unit, volume is big, Material Cost and human cost are higher.TWS
Wireless headset, using single action coil unit, sound quality is generally poor.
Summary of the invention
The technical problem to be solved in the present invention is to provide a kind of full range multistage corrective network compensators, realize 1 junior unit,
There can be an outstanding frequency response index, still on wireless TWS earphone, can either be realized low in wired HIFI earphone
Under cost, small size, provide high-quality HIFI grades of music regenerations.
In order to solve the above-mentioned technical problems, the present invention provides a kind of full range multistage corrective network compensators, comprising:
Compensator first part is T shape RLC high-order lowpass filter circuit, to provide unit low frequency signal access；
Compensator second part, is multiple RLC serial band pass filters, and number is determined by trough quantity to be compensated
It is fixed；And
Compensator Part III is RC extremely high frequency compensator；
Wherein, the compensator first part, compensator second part, compensator Part III be connected to source of sound and
Between pronunciation loudspeaker.
Beneficial effects of the present invention:
Scheme is on wired hifi earphone, and cost is relatively low, and earphone volume greatly reduces again；On TWS bluetooth headset,
Due to the characteristic of unit itself, in addition therefore, have higher sensitivity therefore closer to ear in structure, lower power consumption, continuation of the journey
Time extends；On TWS bluetooth headset, volume can be made smaller, while sound quality is outstanding.
The compensator first part is responsible for low-frequency component in 20~800hz of extraction in one of the embodiments,.
The compensator second part is responsible for frequency response curve in 800~15khz frequency range in one of the embodiments,
Oscillation compensation.
The pronunciation loudspeaker are moving-coil units in one of the embodiments,.
The pronunciation loudspeaker are moving iron units in one of the embodiments,.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of full range multistage corrective network compensator of the present invention.
Fig. 2, which is full range multistage corrective network compensator of the present invention, to be carried out structure to earphone belt and changes schematic diagram.
Fig. 3 is the circuit diagram of full range multistage corrective network compensator of the present invention.
Fig. 4 is single moving iron unit frequency response curve and compensated curve in full range multistage corrective network compensator of the present invention
Figure.
Fig. 5 is the contrast schematic diagram in full range multistage corrective network compensator of the present invention.
Fig. 6 is the another contrast schematic diagram in full range multistage corrective network compensator of the present invention.
Specific embodiment
The present invention will be further explained below with reference to the attached drawings and specific examples, so that those skilled in the art can be with
It more fully understands the present invention and can be practiced, but illustrated embodiment is not as a limitation of the invention.
In the present invention, using multistage compensating for frequency response lattice network, wherein
First part is T shape RLC high-order lowpass filter circuit, to provide unit low frequency signal access.
Second part, is multiple RLC serial band pass filters, and number is determined by trough quantity to be compensated.Pass through
Bandpass filtering compensation, the trough in frequency response can be raised, keep frequency response curve straight.
Part III, is RC extremely high frequency compensator, and the extremely high frequency part of Lai Tisheng earphone responds.
By the adjustment of three part RLC values, the frequency response of each frequency range of earphone becomes controllable, so that individual unit, so that it may
To issue balanced outstanding sound, this will carry out such as Fig. 2 of the change in structure to earphone belt.
Due to the addition of FMC compensator, make the sound of the i.e. capable of emitting high-quality of individual unit, it is thereby possible to select volume
Smaller full range moving iron unit can put it into the sound guide tube position in ear canal, space is greatly saved.
A concrete application scene of the invention is described below:
In Fig. 3, AC is source of sound, and SPK1 is pronunciation loudspeaker,
Upper part is T shape second-order low-pass filter, is responsible for extracting low-frequency component in low 20~800hz,
Middle section is band logical compensator, in responsible 800~15khz frequency range, frequency response curve oscillation compensation,
Lower part is RC high-pass filter, is extremely high frequency compensator, promotes extremely high frequency.
SPK1 can be moving-coil unit or moving iron unit, by taking moving iron unit as an example, above typical frequency response curve such as Fig. 4
Part:
Original frequency response curve has AB wave crest and the trough of BC, DE, results in the earphone that frequency response is not perfect, makes, bass
Missing, middle pitch is excessive, and high pitch is unstable, and sense of hearing can be very poor, for this purpose, first:
The T shape second-order low-pass filter for designing figure 3 above the top part is designed by resistance, inductance, capacitance, makes it
Cutoff frequency: ω0Wherein, L0-0 and L0-1 can retain=800hz, also can choose and remove, to constitute first-order low-pass
Wave device mainly sees AB sections of protrusion degree.
Band logical compensator is designed, in Fig. 3, middle section is band logical compensator, the wave for having n to indicate that how many needs compensate
Paddy, since in Fig. 4, therefore there are 2 band logical compensators in the lowest point at the BC and DE two in frequency response, by taking BC as an example, at two o'clock
Frequency, respectively ωb、ωc, then, by design L1 and C1, that is, can be designed bandpass filter low-frequency cut-off frequency and
High-frequency cut-off frequency is ωbAnd ωc, compensation magnitude is adjusted by R, keeps frequency response curve smooth, DE sections use same method.
3. finally, design extremely high frequency compensator, passes through CkDesign adjustment, keep it turned off frequency, the corresponding frequency at F point
Rate ωfAfterwards, extremely high frequency is compensated, and does not cause spike.
After being compensated by FMC full range multistage corrective network, frequency response curve becomes shown in the curve of the middle and lower part Fig. 4, realizes height
The sound of even.
It after compensation, in bluetooth and wired earphone, may be implemented under smaller volume, realize the sound quality of HIFI rank.
This scheme, after designing corresponding circuit, compared to conventional earphone, in structure, as shown in figure 5, moving iron unit is put
Enter in the sound guide tube in ear canal, and FMC compensation circuit plate is put behind, whole earphone volume is obviously reduced, as shown in Figure 5.
This sound scheme is used on TWS wireless Bluetooth headsets, and unit is placed in the sound guide tube of ear canal, the space vacateed, after
End can directly discharge pond, FMC circuit can directly cloth in Bluetooth circuit plate, still, when insufficient space, can separate
On two pieces of circuit boards, place side by side, as shown in Figure 6.
The volume of earphone will greatly reduce, and be capable of providing hifi grades of high-fidelity sound quality playback, solve TWS earphone volume
Greatly, this common problem of lower tone.
Embodiment described above is only to absolutely prove preferred embodiment that is of the invention and being lifted, protection model of the invention
It encloses without being limited thereto.Those skilled in the art's made equivalent substitute or transformation on the basis of the present invention, in the present invention
Protection scope within.Protection scope of the present invention is subject to claims.
Claims (5)
1. a kind of full range multistage corrective network compensator characterized by comprising
Compensator first part is T shape RLC high-order lowpass filter circuit, to provide unit low frequency signal access；
Compensator second part, is multiple RLC serial band pass filters, and number is determined by trough quantity to be compensated；With
And
Compensator Part III is RC extremely high frequency compensator；
Wherein, the compensator first part, compensator second part, compensator Part III are connected to source of sound and pronunciation
Between loudspeaker.
2. full range multistage corrective network compensator as described in claim 1, which is characterized in that the compensator first part is negative
Duty extracts low-frequency component in 20~800hz.
3. full range multistage corrective network compensator as described in claim 1, which is characterized in that the compensator second part is negative
Blame frequency response curve oscillation compensation in 800~15khz frequency range.
4. full range multistage corrective network compensator as described in claim 1, which is characterized in that the pronunciation loudspeaker are moving-coil lists
Member.
5. full range multistage corrective network compensator as described in claim 1, which is characterized in that the pronunciation loudspeaker are iron list
Member.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910232551.3A CN109889954A (en) | 2019-03-26 | 2019-03-26 | Full range multistage corrective network compensator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910232551.3A CN109889954A (en) | 2019-03-26 | 2019-03-26 | Full range multistage corrective network compensator |
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| Publication Number | Publication Date |
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| CN109889954A true CN109889954A (en) | 2019-06-14 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201910232551.3A Pending CN109889954A (en) | 2019-03-26 | 2019-03-26 | Full range multistage corrective network compensator |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1391780A (en) * | 1999-11-22 | 2003-01-15 | 布瑞汉姆·扬大学 | Hearing aid device incorporating signal processing techniques |
| CN101151800A (en) * | 2005-04-08 | 2008-03-26 | Nxp股份有限公司 | A method of and a device for processing audio data, a program element and a computer-readable medium |
| CN107172540A (en) * | 2017-06-26 | 2017-09-15 | 上海与德科技有限公司 | A kind of Dolby circuit, filter circuit and the equipment of earphone Mike signal |
-
2019
- 2019-03-26 CN CN201910232551.3A patent/CN109889954A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1391780A (en) * | 1999-11-22 | 2003-01-15 | 布瑞汉姆·扬大学 | Hearing aid device incorporating signal processing techniques |
| CN101151800A (en) * | 2005-04-08 | 2008-03-26 | Nxp股份有限公司 | A method of and a device for processing audio data, a program element and a computer-readable medium |
| CN107172540A (en) * | 2017-06-26 | 2017-09-15 | 上海与德科技有限公司 | A kind of Dolby circuit, filter circuit and the equipment of earphone Mike signal |
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Application publication date: 20190614 |