CN202889595U - Frequency divider - Google Patents
Frequency divider Download PDFInfo
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- CN202889595U CN202889595U CN 201220572364 CN201220572364U CN202889595U CN 202889595 U CN202889595 U CN 202889595U CN 201220572364 CN201220572364 CN 201220572364 CN 201220572364 U CN201220572364 U CN 201220572364U CN 202889595 U CN202889595 U CN 202889595U
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- frequency
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- frequency divider
- frequency division
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Abstract
The utility model discloses a frequency divider. The frequency divider is divided into three paths of fractional frequency, and the frequency divider comprises a bass unit connected with a woofer, an alto unit connected with a midrange horn, and a treble unit connected with a tweeter. The frequency divider adopts the three-path fractional frequency design, namely the treble, midrange and bass frequency bands are borne by different horn units, and the horns work in different frequency bands, so fractional frequency curves are not intersected after declined on the fractional frequency points, the curves after synthesis have no peak valleys or peak drums, the frequency divider has no phase interference, sound reproduction is more accurate, the acoustic fidelity display is more comprehensive, and the application range is wider.
Description
Technical field
The utility model relates to the sound equipment processing technology field, and particularly a kind of phase interference, sound-reducing of not existing is more accurate, and the tonequality performance is more comprehensive, the frequency divider that applicable surface is wider.
Background technology
The audio amplifier characteristics of two divided-frequency are to have a loudspeaker unit to be responsible for simultaneously output middle pitch and bass, and advantage is that cost is low, frequency divider is simple, volume is little, it is little that power amplifier power thrust is required, and the performance of music focuses on quite a lot of relatively.But shortcoming is that the stereovision of sound is not enough.Owing to will take into account middle bass, so that unit can not be done is too large, this has just affected the performance of low frequency, the effect of low frequency is not fine, and two sound source certain spacing is arranged, owing to the difference to identical location point produces path difference, interfere and offset thereby produce in some frequencies.Sound field (ability of reduction playback environ-ment) also is restricted to a great extent.
The utility model content
Based on this, the purpose of this utility model is to provide a kind of phase interference, sound-reducing of not existing more accurate, and the tonequality performance is more comprehensive, the frequency divider that applicable surface is wider.
In order to realize above-mentioned purpose, the utility model has adopted following technical scheme:
Frequency divider, described frequency divider is three road frequency divisions, comprises the bass unit that is connected with bass horn, the alto units that is connected with mediant trumpet, and the voice unit that is connected with loudspeaker.
Preferably, described bass unit comprises the first frequency division inductance L 1 and the first feedback capacity C1, and described the first frequency division inductance L 1 is connected in series with bass horn, and described the first feedback capacity C1 and bass horn are connected in parallel.
Preferably, described alto units comprises the second frequency division inductance L 2, three frequency division inductance L 3, the first resistance R 1, the second resistance R 2, the second feedback capacity C3, the 3rd feedback capacity C4 and the 4th feedback capacity C5, described the second feedback capacity C3, the second frequency division inductance L 2 and 1 connection parallel with one another of the first resistance R and be connected in series through three frequency division inductance L 3 and mediant trumpet, described the 3rd feedback capacity C4, the second resistance R 2 mutually are connected in series and are connected in parallel with mediant trumpet, and described the 4th feedback capacity C5 and mediant trumpet are connected in parallel.
Preferably, described voice unit comprises thermistor PTC, the 3rd resistance R 3, the 4th resistance R 4, the 5th feedback capacity C6, the 6th feedback capacity C7 and the 4th frequency division inductance L 4, described thermistor PTC and the 3rd resistance R 3 are connected in parallel, and be connected with loudspeaker through the 5th feedback capacity C6, the 6th feedback capacity C7, described the 4th frequency division inductance L 4 and the 4th resistance R 4 are connected in parallel with loudspeaker respectively.
The utlity model has following beneficial effect: owing to adopting the design of three road frequency divisions, be that high, medium and low audio section is born by different loudspeaker units, owing to being operated in the different frequency ranges separately, the phenomenon that intersects again after the frequency division curve can not be created in part-frequency point and drops separately, just can not cause the curve after synthesizing peak valley or peak drum phenomenon to occur yet, so that there is not phase interference in frequency divider, make sound-reducing more accurate like this, the tonequality performance is more comprehensive, and applicable surface is wider.
Description of drawings
Fig. 1 is circuit structure diagram of the present utility model.
Embodiment
The utility model is described in more detail below in conjunction with the drawings and specific embodiments.
Consult shown in Figure 1ly, the utility model provides a kind of frequency divider, and described frequency divider is three road frequency divisions, comprises the bass unit 4 that is connected with bass horn 1, the alto units 5 that is connected with mediant trumpet 2, and the voice unit 6 that is connected with loudspeaker 3.
In the utility model, wherein: described bass unit 4 comprises the first frequency division inductance L 1 and the first feedback capacity C1, and described the first frequency division inductance L 1 is connected in series with bass horn 1, and described the first feedback capacity C1 and bass horn 1 are connected in parallel.Described alto units 5 comprises the second frequency division inductance L 2, three frequency division inductance L 3, the first resistance R 1, the second resistance R 2, the second feedback capacity C3, the 3rd feedback capacity C4 and the 4th feedback capacity C5, described the second feedback capacity C3, the second frequency division inductance L 2 and 1 connection parallel with one another of the first resistance R and be connected in series through three frequency division inductance L 3 and mediant trumpet 2, described the 3rd feedback capacity C4, the second resistance R 2 mutually are connected in series and are connected in parallel with mediant trumpet 2, and described the 4th feedback capacity C5 and mediant trumpet 2 are connected in parallel.Described voice unit 6 comprises thermistor PTC, the 3rd resistance R 3, the 4th resistance R 4, the 5th feedback capacity C6, the 6th feedback capacity C7 and the 4th frequency division inductance L 4, described thermistor PTC and the 3rd resistance R 3 are connected in parallel, and be connected with loudspeaker 6 through the 5th feedback capacity C6, the 6th feedback capacity C7, described the 4th frequency division inductance L 4 and the 4th resistance R 4 are connected in parallel with loudspeaker 6 respectively.
Operation principle of the present utility model is:
Because the first frequency division inductance L 1 and load R(bass unit rated impedance of bass unit 4) be in series, if therefore the impedance of the first frequency division inductance L 1 is excessive, the loss thereon of power amplifier power output will increase.Simultaneously, the power amplifier internal resistance also will weaken greatly to the damping action of bass unit 4.Be the effective output that the former affects power amplifier, the latter is irredeemable on the impact of tonequality.Because the inductance value of the first frequency division inductance L 1 is maximum in dividing network, and increases with the reduction of part-frequency point, so the impact of the D.C. resistance of the first frequency division inductance L 1 is quite outstanding; And the first feedback capacity C1 increases its capacitance.
As for the 4th frequency division inductance L 4 of voice unit 6, because it is not connected with load (voice unit rated impedance), just there be not power consumption and the damping problem as the first frequency division inductance L 1.But for its impedance as far as possible less.Because it is in parallel with load, play a part bypass from the remaining bass composition of the 5th feedback capacity C6.If resistance is excessive, will affect the high pitch dividing network to the decay steepness of bass.
Above-mentioned execution mode is the better execution mode of the utility model; but execution mode of the present utility model is not subjected to the restriction of above-mentioned execution mode; and other any do not deviate from change, the modification done under Spirit Essence of the present utility model and the principle, substitutes, combination, simplify; all should be the substitute mode of equivalence, be included within the protection range of the present utility model.
Claims (4)
1. frequency divider is characterized in that, described frequency divider is three road frequency divisions, comprises the bass unit (4) that is connected with bass horn (1), the alto units (5) that is connected with mediant trumpet (2), and the voice unit (6) that is connected with loudspeaker (3).
2. described frequency divider according to claim 1, it is characterized in that, described bass unit (4) comprises the first frequency division inductance (L1) and the first feedback capacity (C1), described the first frequency division inductance (L1) is connected in series with bass horn (1), and described the first feedback capacity (C1) is connected in parallel with bass horn (1).
3. described frequency divider according to claim 1, it is characterized in that, described alto units (5) comprises the second frequency division inductance (L2), three frequency division inductance (L3), the first resistance (R1), the second resistance (R2), the second feedback capacity (C3), the 3rd feedback capacity (C4) and the 4th feedback capacity (C5), described the second feedback capacity (C3), the second frequency division inductance (L2) and the first resistance (R1) connection parallel with one another and be connected in series through three frequency division inductance (L3) and mediant trumpet (2), described the 3rd feedback capacity (C4), the second resistance (R2) mutually is connected in series and is connected in parallel with mediant trumpet (2), and described the 4th feedback capacity (C5) is connected in parallel with mediant trumpet (2).
4. described frequency divider according to claim 1, it is characterized in that, described voice unit (6) comprises thermistor (PTC), the 3rd resistance (R3), the 4th resistance (R4), the 5th feedback capacity (C6), the 6th feedback capacity (C7) and the 4th frequency division inductance (L4), described thermistor (PTC) is connected in parallel with the 3rd resistance (R3), and be connected with loudspeaker (6) through the 5th feedback capacity (C6), the 6th feedback capacity (C7), described the 4th frequency division inductance (L4) and the 4th resistance (R4) are connected in parallel with loudspeaker (6) respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220572364 CN202889595U (en) | 2012-11-02 | 2012-11-02 | Frequency divider |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220572364 CN202889595U (en) | 2012-11-02 | 2012-11-02 | Frequency divider |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202889595U true CN202889595U (en) | 2013-04-17 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220572364 Expired - Fee Related CN202889595U (en) | 2012-11-02 | 2012-11-02 | Frequency divider |
Country Status (1)
| Country | Link |
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| CN (1) | CN202889595U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104469603A (en) * | 2013-09-25 | 2015-03-25 | 联想(北京)有限公司 | Electronic device, frequency dividing method and frequency dividing device |
| CN108447658A (en) * | 2018-01-24 | 2018-08-24 | 北京金科华业测控技术有限公司 | A kind of inductor, frequency divider and speaker |
-
2012
- 2012-11-02 CN CN 201220572364 patent/CN202889595U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104469603A (en) * | 2013-09-25 | 2015-03-25 | 联想(北京)有限公司 | Electronic device, frequency dividing method and frequency dividing device |
| CN104469603B (en) * | 2013-09-25 | 2018-04-27 | 联想(北京)有限公司 | Electronic equipment, dividing method and frequency divider |
| CN108447658A (en) * | 2018-01-24 | 2018-08-24 | 北京金科华业测控技术有限公司 | A kind of inductor, frequency divider and speaker |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130417 Termination date: 20141102 |
|
| EXPY | Termination of patent right or utility model |