CN2710293Y - Sound equipment of independent broadcast high middle low sound - Google Patents
Sound equipment of independent broadcast high middle low sound Download PDFInfo
- Publication number
- CN2710293Y CN2710293Y CN 200320116899 CN200320116899U CN2710293Y CN 2710293 Y CN2710293 Y CN 2710293Y CN 200320116899 CN200320116899 CN 200320116899 CN 200320116899 U CN200320116899 U CN 200320116899U CN 2710293 Y CN2710293 Y CN 2710293Y
- Authority
- CN
- China
- Prior art keywords
- low
- circuit
- electronic switching
- power amplifier
- switching circuit
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Abstract
The utility model relates to a sound device which can independently broadcast high, middle and low sounds, comprising a high pass, a band pass and a low pass filter circuits, a low pitch, a middle pitch and a high pitch power amplification circuits, an electronic switching circuit, etc. The utility model makes all the backing stage channel and audio signals divided into high, middle, and low frequencies by the high pass, the band pass and the low pass filters of electronic frequency division. After that, electronic switching circuits are respectively added into each status signal of the high, the middle and the low frequencies, and the switching of the high, the middle and the low frequency signals are respectively controlled by each switching circuit. After switching, the power of the audio signal is amplified to drive the loudspeaker to broadcast. While using, the broadcast can be carried out after the high, the middle and the low frequency signals are respectively switched on as required, or the broadcast can be carried out after the high, the middle and the low frequency signals are combined.
Description
Technical field
The utility model relates to a kind of device, the particularly a kind of acoustics that can play high, medium and low sound separately.
Background technology
Put down in writing in (application number 03224253.0) in the Chinese patent application a kind of " Active crossover operation home theater device ", its operation principle is before the audio signal power amplification, the audio-frequency information of full range is carried out the frequency division of high, medium and low frequency range, respectively high, medium and low frequency band signals is carried out power amplification and output then.Have the Active crossover state and resolve the power height, phase mutual interference cross-talk is few, and stereovision is abundant, and anti-tin of high, medium and low tone level weighing apparatus, the clean tone-off of background such as dye at advantage.But this device can't be connected high, medium and low audio signal as required respectively and play, and uses underaction convenient.
Summary of the invention
The purpose of this utility model is to provide a kind of and can controls respectively the signal of the high, medium and low frequency range behind the Active crossover, plays the acoustics that can play high, medium and low sound separately of high, medium and low tone signal as required alone or in combination.
The purpose of this utility model can reach by following measure: a kind ofly can play height separately, in, the acoustics of bass, comprise high-pass filtering circuit, bandwidth-limited circuit, low-pass filter circuit, the bass power amplifier, the middle pitch power amplifier, the high pitch power amplifier, it is characterized in that: between high-pass filtering circuit and high pitch power amplifier, be provided with electronic switching circuit, between bandwidth-limited circuit and middle pitch power amplifier, be provided with electronic switching circuit, between low-pass filter circuit and bass power amplifier, be provided with electronic switching circuit, prime full range audio signal is by the high-pass filtering circuit of Active crossover, bandwidth-limited circuit, low-pass filter circuit is divided into height with signal, in, low-frequency range, control height respectively by electronic switching circuit, in, the break-make of low frequency signal, and then with audio signal respectively by the bass power amplifier, the middle pitch power amplifier, the high pitch power amplifier carries out power amplification, drives the loud speaker playback.
The purpose of this utility model can also reach by following measure: integrated circuit (IC) in the low-pass filter circuit
1AOutput and relay J
1Contact J
1-1Join triode BG in the electronic switching circuit
2Collector electrode and relay J
1Coil join integrated circuit (IC) in the bandwidth-limited circuit (2)
1EOutput and relay J
3Contact J
3-1Join triode BG in the electronic switching circuit
6Collector electrode and relay J
3Coil join integrated circuit (IC) in the high-pass filtering electrical equipment
1COutput and relay J
2Contact J
2-1Join triode BG in the electronic switching circuit
4Collector electrode and relay J
2Coil join.
The utility model has following advantage compared to existing technology: the circuit advantages of simple, add an electronic switch respectively in each road signal of the high, medium and low frequency range behind Active crossover, and control the break-make of high, medium and low frequency signal respectively by each electronic switch.Can connect high, medium and low frequency signal as required respectively and play, perhaps high, medium and low frequency signal combination be got up to play.Make music more rich and varied, be full of variety.
Description of drawings
Fig. 1 is a functional-block diagram of the present utility model;
Fig. 2 is an electrical schematic diagram of the present utility model.
Embodiment
This reality is originally novel to be described in further detail below in conjunction with accompanying drawing (embodiment):
With reference to Fig. 1, the utility model comprises high-pass filtering circuit 1, bandwidth-limited circuit 2, low-pass filter circuit 3, bass power amplifier 4, middle pitch power amplifier 5, high pitch power amplifier 6, electronic switching circuit 7,8,9, loud speaker 10,11,12, prime audio amplifier circuit 13 etc.
With reference to Fig. 2, low-pass filter circuit 3 comprises integrated circuit (IC)
1A, IC
IB, resistance R
1～R
5, capacitor C
1～C
2Deng; Integrated circuit (IC) in the bandwidth-limited circuit 2
ID, IC
IE, resistance R
8～R
11, capacitor C
6～C
7Deng; High-pass filtering circuit 1 comprises integrated circuit (IC)
IC, resistance R
6, R
7, capacitor C
4, C
5Deng; Electronic switching circuit 7 comprises triode BG
3, BG
4, relay J
2, resistance R
14, R
15Deng; Electronic switching circuit 8 comprises triode BG
5, BG
6, relay J
3, resistance R
16, R
17Deng; Electronic switching circuit 9 comprises triode BG
1, BG
2, relay J
1, resistance R
12, R
13Deng.
During work, turn off the signal of low-frequency range as need, can be at triode BG
1Base stage (control end) add high-level control signal, make BG
1, BG
2Conducting, relay J
1Adhesive, its contact J
1-1Ground connection, this moment is through IC
IAThe low frequency signal of (low pass filter) output will be short-circuit ground, and can not deliver to the bass power amplifier and carry out power amplification and output, thereby turn off low frequency signal.In like manner, can control triode BG respectively
3Or BG
5Base signal, make middle and high frequency signal ground connection respectively.Like this, can play high, medium and low tone signal as required alone or in combination, make music more rich and varied, be full of variety.
Claims (2)
1, a kind ofly can play height separately, in, the acoustics of bass, comprise high-pass filtering circuit (1), bandwidth-limited circuit (2), low-pass filter circuit (3), bass power amplifier (4), middle pitch power amplifier (5), high pitch power amplifier (6), it is characterized in that: between high-pass filtering circuit (1) and high pitch power amplifier (6), be provided with electronic switching circuit (7), between bandwidth-limited circuit (2) and middle pitch power amplifier (5), be provided with electronic switching circuit (8), between low-pass filter circuit (3) and bass power amplifier (4), be provided with electronic switching circuit (9), the output of electronic switching circuit (7) links to each other with the input of high pitch power amplifier (6), the output of electronic switching circuit (8) links to each other with the input of middle pitch power amplifier (5), and the output of electronic switching circuit (9) links to each other with the input of bass power amplifier (4).
2, device according to claim 1 is characterized in that: integrated circuit (IC) in the low-pass filter circuit (3)
1AOutput and relay J
1Contact J
1-1Join triode BG in the electronic switching circuit (9)
2Collector electrode and relay J
1Coil join integrated circuit (IC) in the bandwidth-limited circuit (2)
1EOutput and relay J
3Contact J
3-1Join triode BG in the electronic switching circuit (8)
6Collector electrode and relay J
3Coil join integrated circuit (IC) in the high-pass filtering electrical equipment (1)
ICOutput and relay J
2Contact J
2-1Join triode BG in the electronic switching circuit (7)
4Collector electrode and relay J
2Coil join.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200320116899 CN2710293Y (en) | 2003-10-10 | 2003-10-10 | Sound equipment of independent broadcast high middle low sound |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200320116899 CN2710293Y (en) | 2003-10-10 | 2003-10-10 | Sound equipment of independent broadcast high middle low sound |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2710293Y true CN2710293Y (en) | 2005-07-13 |
Family
ID=34845305
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200320116899 Expired - Fee Related CN2710293Y (en) | 2003-10-10 | 2003-10-10 | Sound equipment of independent broadcast high middle low sound |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2710293Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102761802A (en) * | 2012-08-04 | 2012-10-31 | 鲍善翔 | Three-frequency divider |
| CN105812919A (en) * | 2014-12-30 | 2016-07-27 | 深圳Tcl数字技术有限公司 | Audio multi-power-amplifier processing method and device |
-
2003
- 2003-10-10 CN CN 200320116899 patent/CN2710293Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102761802A (en) * | 2012-08-04 | 2012-10-31 | 鲍善翔 | Three-frequency divider |
| CN102761802B (en) * | 2012-08-04 | 2014-11-26 | 鲍善翔 | Three-frequency divider |
| CN105812919A (en) * | 2014-12-30 | 2016-07-27 | 深圳Tcl数字技术有限公司 | Audio multi-power-amplifier processing method and device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |