CN2907148Y - Dedicated microphone gain increasing processor for KTV - Google Patents
Dedicated microphone gain increasing processor for KTV Download PDFInfo
- Publication number
- CN2907148Y CN2907148Y CN 200620056758 CN200620056758U CN2907148Y CN 2907148 Y CN2907148 Y CN 2907148Y CN 200620056758 CN200620056758 CN 200620056758 CN 200620056758 U CN200620056758 U CN 200620056758U CN 2907148 Y CN2907148 Y CN 2907148Y
- Authority
- CN
- China
- Prior art keywords
- equilibrium
- microphone
- ktv
- frequency
- signal
- 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
Links
Abstract
The utility model relates to a KTV special microphone gain and promotion processor, the processor comprises a microphone preamplifier, a plurality of segments of parameters equalizers, signals is inputted into an equilibrium and equilibrium frequency shift switch by the microphone preamplifier microphone, the equilibrium and equilibrium frequency shift switch is used to interactively switch with a frequency shift device to determine the frequency to be controlled; the output terminal of the equilibrium and equilibrium frequency shift switch passing through a signal attenuator is outputted to the corresponding input interface of the power amplifier equipment; moreover, the microphone preamplifier and the signal attenuator has the same multiple. The utility model of processor effectively controls the howls in KTV, and increases the voice of the microphone gain, makes karaoke a light-hearted activity, and has a simple structure, convenient production and low cost.
Description
Technical field
The utility model relates to a kind of sound equipment processing circuit unit, and in particular a kind of KTV special microphones gain promotes the circuit arrangement of processor.
Background technology
In the present sound equipment treatment circuit, can realize on-the-spot public address by the circuit of power amplifying device usually to general environment.Often cause the transaudient gain of microphone not enough because of building reasons such as sound, equipment self Frequency Response, the raising mike gain often causes utters long and high-pitched sounds, and has to adopt the method that reduces the microphone volume to avoid uttering long and high-pitched sounds in use.This has just caused the voice part in the on-the-spot public address not enough, singer or talker are felt exhausted and is subjected to the constraint of microphone, the on-mike speech had a mind to or sing of having to.
The people that exist at the problems referred to above have proposed to revise frequency response curve by the frequency of uttering long and high-pitched sounds is easily decayed by methods such as equalizer, feedback suppressor (equalizer automatically), frequency shifter, phase shifter, feedback canceller devices, thereby reach the purpose that improves the transaudient gain of microphone.More than the employing of these methods in some microphone position relative fixed and professional sound reinforcement system, better action has been played in the raising of transaudient gain.
Described feedback inhibition method is at the environment of this performance of KTV, and it is unable to do what one wishes just to seem.The singer is fixed on the position under reason one, this environment, and uttering long and high-pitched sounds of room a little changes along with the difference of position.What reason two, KTV often adopted is front and back level combination type power amplifiers, and the said equipment that inserts single-piece does not have interface.Reason three, front and back level are separated the KTV sound reinforcement system and are inserted equalizer, frequency shifter, phase shifter therebetween, can cause the serious distortion of tone color, and to creating a great impression of tone color aspect, and the transaudient gain of microphone is carried less than enough height.
At the problems referred to above that exist in the KTV environment, we have proposed the equalization parameter device and have mixed the scheme of using with frequency shifter.The cut-in method preposition with KTV can adopt microphone to insert and circuit access dual mode.Decay with the Frequency point that parametric equalizer is easily uttered long and high-pitched sounds to the room, adopt frequency shifter to avoid the secondary of frequency to overlap the frequency the cause this complex method that superposes simultaneously, reached the purpose that the KTV environment is uttered long and high-pitched sounds and suppressed and improve the transaudient gain of microphone the control of frequency.The transaudient gain of whole microphone can promote 3-8Db, thereby has solved the difficult problem tired, that easily utter long and high-pitched sounds of singing in the KTV environment.
Existing KTV stereo set is shouted oneself hoarse the consumer after use, and can not effectively amplify its song, and there is defective in prior art, and awaits improving and development.
The utility model content
The purpose of this utility model is to provide a kind of KTV special microphones gain to promote processor, KTV stereo set at prior art, provide the mike gain of a kind of KTV of being exclusively used in to promote processing unit, between microphone and power amplifying device, set up the utility model device, strengthen the transaudient gain of KTV microphone, and reduced the possibility of uttering long and high-pitched sounds.
The technical solution of the utility model is as follows:
A kind of KTV special microphones gain promotes processor, and wherein, it comprises a microphone preamplifier, multistage equalization parameter device; Described microphone preamplifier is exported microphone signal by described multistage equalization parameter device, and outputs to the microphone input interface of corresponding power amplifying device through a signal attenuator;
And the microphone preamplifier of described device is identical with the multiple of described signal attenuator.
Described lifting processor wherein, also is provided with one and balanced adds the shift frequency diverter switch with equilibrium between described multistage equalization parameter device and the described signal attenuator, when being used for pure parameter balanced way, seek the highest frequency of uttering long and high-pitched sounds in room, and this is uttered long and high-pitched sounds a little decay; Described equilibrium is connected described signal attenuator with the balanced output that adds the shift frequency diverter switch.
Described lifting processor, wherein, described equilibrium and equilibrium add the shift frequency diverter switch and also are provided with a frequency shifter circuit, the following setting of this frequency shifter circuit: described equilibrium adds the acoustic signal of shift frequency diverter switch input successively through a low pass filter and a circuit of high pass filter with equilibrium, and a plurality of phase-shift networks in parallel, signal after the processing gives an adder synthetic output through modulator output sine and cosine wave, and an amplitude trimming circuit is set on described sine wave or cosine wave, be used to control described sine wave and the synthetic stability of waveform of cosine wave.
Described lifting processor, wherein, described phase-shift network comprises that 0 degree, 90 is spent, 180 degree and 270 are spent totally four, and described modulator is a four-way or two two channel modulators.
Described lifting processor wherein, also is provided with an audio-switch (Noise gate) between described equilibrium and the balanced output that adds shift frequency diverter switch and described frequency shifter, makes it to be operated in voice signal and normally exports, the output gain of decaying automatically during no signal; Make it to reach and reduce the systematically purpose of noise.
Described lifting processor, wherein, described parametric equalizer and frequency shifter circuit are compound to be embedded in the KTV power amplifying device circuit.
Described lifting processor, wherein, the multiplication factor of described microphone preamplifier and described signal attenuator is 5-100 times.
Described lifting processor, wherein, described microphone preamplifier is adjustable or fixing enlargement ratio.
A kind of KTV special microphones gain provided by the utility model promotes processor, owing to adopt the balanced frequency control circuit of the parameter that is provided with between power amplifying device and microphone the frequency response curve in the sound field to be revised and a frequency shifter circuit wherein.Controlled uttering long and high-pitched sounds a little of KTV effectively, thereby it is a kind of satisfied movable easily that Karaoke is become, and it is simple in structure, generates easyly, cost is low.
Description of drawings
Fig. 1 is a circuit structure theory diagram of the present utility model;
Fig. 2 is the schematic block circuit diagram of frequency shifter of the present utility model.
Embodiment
Below preferred embodiment of the present utility model is described in detail.
A kind of KTV special microphones gain of the present utility model promotes processor, and as depicted in figs. 1 and 2, it comprises a microphone preamplifier, it has can be in harmonious proportion fixedly two kinds of enlargement ratios, can connect a plurality of microphones,, 1-8 road microphone can be set according to the setting on the utility model device product; One multistage equalization parameter device circuit carries out equalization parameter to the microphone acoustic signal after amplifying; Described microphone preamplifier is input to an equilibrium by described multistage equalization parameter device with microphone signal and adds shift frequency diverter switch (also can add the shift frequency diverter switch without this equilibrium and equilibrium in side circuit) with equilibrium, this equilibrium and equilibrium add the shift frequency diverter switch and are used for carrying out interaction feedback with a frequency shifter circuit, determine to treat the frequency of shift frequency; Described equilibrium and the balanced output that adds the shift frequency diverter switch output to the microphone input interface of corresponding power amplifying device through a signal attenuator; And, described microphone preamplifier of the present utility model is identical with the multiple of described signal attenuator, make it to satisfy the needs of singing environment, assurance and consistency of product to tone color play an important role, guarantee to simulate and big input signal such as microphone, avoid because of the excessive blasting that causes that the power amplifier microphone is preposition of microphone circuit output.
Circuit arrangement of the present utility model like this can be set to a separate equipment separately, several microphones can be inserted on the processor device of the present utility model, and the output of this equipment is similar to the output of microphone, and the microphone input port that this output is inserted power amplifier as the connected mode of former microphone gets final product.
Lifting processor of the present utility model can be exclusively used in the not enough occasions of the transaudient gain of microphone such as KTV, can guarantee the transaudient gain that microphone is enough, handler's part branch, other audio signals are normally amplified, therefore, the user just can make the song of oneself obtain amplifying easily.The purpose of 5-100 times of design even more powerful microphone preamplifier is in order to make equalization parameter device and frequency shifter be in best operating state.
In above-mentioned each circuit unit of the present utility model, therefore the implementation that all promising those skilled in the art understood, no longer gives unnecessary details physical circuit in the prior art.KTV special microphones gain of the present utility model promotes processor, and parametric equalizer wherein and frequency shifter can directly embed the microphone pre-amplification circuit circuit of KTV preposition equipment.Above circuit structure also can be made special-purpose functional module in the rear end; Also can be set to a separate equipment separately, be arranged between power amplifying device and the microphone, adaptive with convenient and existing power amplifying device and microphone.
Because of promoting processor, KTV special microphones gain of the present utility model need control the frequency of uttering long and high-pitched sounds in the room, therefore, it needs Installation and Debugging, equipment of the present utility model has two kinds of operating states, can add shift frequency diverter switch (also can or close without switch) and realizes by described equilibrium and equilibrium are set.When switch is upspring, shown in Fig. 11,2 and 5,6 connections respectively, parametric equalizer is in debugging mode, this moment, microphone was generally over against audio amplifier, and adjust the volume that improves microphone and utter long and high-pitched sounds to critical, the frequency degradation period is set to the maximum attenuation state, and the frequency sweep knob of adjusting parametric equalizer is till a disappearance of uttering long and high-pitched sounds.Progressively improve microphone volume appearance second and utter long and high-pitched sounds a little, control corresponding frequency in order to last method.Other the point control of uttering long and high-pitched sounds repeats above-mentioned steps.Pressing balanced frequency shifter switch after the equalizer adjustment finishes makes this equipment be in the maximum feedback holddown.This moment of 2,3 and 4,5 connections as shown in fig. 1, described parametric equalizer, frequency shifter and photoelectricity audio-switch (Noise gate also can not be provided with this switch) all begin operate as normal.
The output that described audio-switch (Noise gate) is linked into described frequency shifter adds between the shift frequency diverter switch with described equilibrium and equilibrium, can be controlled at like this that the described microphone of decay under the situation of microphone tone-off is preposition, the circuit signal of equalizer, frequency shifter, thereby can reduce the system noise of sound reinforcement system.
Described frequency shifter circuit of the present utility model, as shown in Figure 2, also comprise: described equilibrium adds the acoustic signal of shift frequency diverter switch input successively through a low pass filter and a circuit of high pass filter with equilibrium, and a plurality of phase-shift networks in parallel, the oscillator signal that audio signal after the processing and voltage controlled oscillator send is synthetic through modulators modulate, exports sine and cosine signal behind the shift frequency respectively.These two groups of signals are by the synthetic audio signal that is output into behind the shift frequency of adder.And an amplitude trimming circuit is set on sinusoidal signal or cosine signal before the described adder, be used to control described sine wave and the synthetic stability of waveform of cosine wave.Described phase-shift network comprises that 0 degree, 90 is spent, 180 degree and 270 are spent totally four, and described modulator is a four-way or two two channel modulators.
The utility model can be controlled sinusoidal output and the synthetic stability of waveform of cosine output by described amplitude trimming circuit, this reduction to later stage tonequality plays important effect, thereby can guarantee the undistorted amplification of microphone when KTV, thereby guarantee to make whole frequency shifter circuit can be used in the singing environment.
Circuit arrangement of the present utility model or equipment have solved the problem that the singing that exists in the present KTV singing environment is tired and utter long and high-pitched sounds easily, can significantly improve the system gain in the on-the-spot sound reinforcement system, and lifting capacity reaches 3-8db; And having a strong feedback inhibition, the microphone acoustic pressure is reaching the generation that can stop to utter long and high-pitched sounds under the prerequisite easily of singing.
Compound by equalization parameter device and two kinds of feedback inhibition means of frequency shifter of the present utility model reached the strongest feedback inhibition effect.It is that concrete needs at the on-the-spot public address of KTV design fully that mike gain of the present utility model promotes processor, its be applied among the KTV be prior art do not meet, and this product is realized each function by circuit substantially, its production structure is simple, cost is lower, and realizes that effect is very obvious.Parametric equalizer add the frequency shifter compound KTV of being embedded into combination type power amplifier and KTV effect preposition in, do not have similar products like at present yet.
Should be understood that, for those of ordinary skills, can be improved according to the above description or conversion, and all these improvement and conversion all should belong to the protection range of the utility model claims.
Claims (8)
1, a kind of KTV special microphones gain promotes processor, it is characterized in that it comprises a microphone preamplifier, multistage equalization parameter device; Described microphone preamplifier is exported microphone signal by described multistage equalization parameter device, and outputs to the microphone input interface of corresponding power amplifying device through a signal attenuator;
And the microphone preamplifier of described device is identical with the multiple of described signal attenuator.
2, lifting processor according to claim 1, it is characterized in that, one equilibrium also is set between described multistage equalization parameter device and the described signal attenuator adds the shift frequency diverter switch with equilibrium, when being used for pure parameter balanced way, seek the highest frequency of uttering long and high-pitched sounds in room, and this is uttered long and high-pitched sounds a little decay; Described equilibrium is connected described signal attenuator with the balanced output that adds the shift frequency diverter switch.
3, lifting processor according to claim 2, it is characterized in that, described equilibrium and equilibrium add the shift frequency diverter switch and also are provided with a frequency shifter circuit, the following setting of this frequency shifter circuit: described equilibrium adds the acoustic signal of shift frequency diverter switch input successively through a low pass filter and a circuit of high pass filter with equilibrium, and a plurality of phase-shift networks in parallel, signal after the processing gives an adder synthetic output through modulator output sine and cosine wave, and an amplitude trimming circuit is set on described sine wave or cosine wave, be used to control described sine wave and the synthetic stability of waveform of cosine wave.
4, lifting processor according to claim 3 is characterized in that, described phase-shift network comprises that 0 degree, 90 is spent, 180 degree and 270 are spent totally four, and described modulator is a four-way or two two channel modulators.
5, lifting processor according to claim 3, it is characterized in that, also be provided with an audio-switch between described equilibrium and the balanced output that adds shift frequency diverter switch and described frequency shifter, make it to be operated in voice signal and normally export, the output gain of decaying automatically during no signal; Make it to reach and reduce the systematically purpose of noise.
6, lifting processor according to claim 3 is characterized in that, described parametric equalizer and frequency shifter circuit are compound to be embedded in the KTV power amplifying device circuit.
7, lifting processor according to claim 3 is characterized in that, the multiplication factor of described microphone preamplifier and described signal attenuator is 5-100 times.
8, lifting processor according to claim 1 is characterized in that, described microphone preamplifier is adjustable or fixing enlargement ratio.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620056758 CN2907148Y (en) | 2006-03-18 | 2006-03-18 | Dedicated microphone gain increasing processor for KTV |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620056758 CN2907148Y (en) | 2006-03-18 | 2006-03-18 | Dedicated microphone gain increasing processor for KTV |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2907148Y true CN2907148Y (en) | 2007-05-30 |
Family
ID=38115794
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200620056758 Expired - Fee Related CN2907148Y (en) | 2006-03-18 | 2006-03-18 | Dedicated microphone gain increasing processor for KTV |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2907148Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103826174A (en) * | 2014-03-07 | 2014-05-28 | 杨红军 | Wireless digital microphone system |
| CN104811155A (en) * | 2015-04-20 | 2015-07-29 | 深圳市冠旭电子有限公司 | Balance device adjusting method and device |
| CN110035374A (en) * | 2019-04-19 | 2019-07-19 | 宁波启拓电子设备有限公司 | Debug the method and device of audio collecting device |
-
2006
- 2006-03-18 CN CN 200620056758 patent/CN2907148Y/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103826174A (en) * | 2014-03-07 | 2014-05-28 | 杨红军 | Wireless digital microphone system |
| CN103826174B (en) * | 2014-03-07 | 2018-10-26 | 广州市华维世电子科技有限公司 | A kind of radio digital mic system |
| CN104811155A (en) * | 2015-04-20 | 2015-07-29 | 深圳市冠旭电子有限公司 | Balance device adjusting method and device |
| CN104811155B (en) * | 2015-04-20 | 2017-08-04 | 深圳市冠旭电子股份有限公司 | A kind of balanced device method of adjustment and device |
| CN110035374A (en) * | 2019-04-19 | 2019-07-19 | 宁波启拓电子设备有限公司 | Debug the method and device of audio collecting device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101366177B (en) | Audio dosage control | |
| CN101577848B (en) | Supper bass boosting method and system | |
| CN204518035U (en) | Automatic control of sound volume audio amplifier | |
| CN101609667A (en) | Realize the method for Kara OK function in the PMP player | |
| KR20050043800A (en) | Acoustical virtual reality engine and advanced techniques for enhancing delivered sound | |
| CN101964190A (en) | Method and device for restoring signal under speaker cut-off frequency to original sound | |
| EP1865598A3 (en) | Input-gain control apparatus and method | |
| CN201025720Y (en) | TV set Kara OK accompanying system | |
| WO2001001566A3 (en) | Method for processing an audio signal | |
| CN2907148Y (en) | Dedicated microphone gain increasing processor for KTV | |
| WO2005089018A1 (en) | Stereophonic reproducing system and stereophonic reproducing device | |
| CN101771913B (en) | Device for controlling bass sound reproduction of audio frequency signal and method | |
| CN101600132B (en) | Method and device for adjusting audio file play effect on portable handheld device | |
| WO1996031082A3 (en) | Audio bass speaker driver circuit | |
| KR20020035003A (en) | Ultra Bass II | |
| CN106162443A (en) | A kind of sound system | |
| CN106060714A (en) | Control method and device for reducing sound source noises | |
| CN201667200U (en) | Karaoke circuit and television | |
| CN201789629U (en) | Squeal restraining device and sound amplifying system | |
| CN104902387A (en) | Power amplifier system and howling suppression circuit | |
| CN219304991U (en) | Multichannel microphone input effect adjusting circuit | |
| CN205105351U (en) | A audio equipment for sing | |
| CN211181633U (en) | Karaoke system with multi-sound-effect reverberation | |
| CN2938669Y (en) | Bass processing circuit | |
| CN210986399U (en) | Audio signal processing system of reading pavilion |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20070530 |