CN106210983A - A kind of realize the method for Kara OK function, device and earphone by earphone - Google Patents

A kind of realize the method for Kara OK function, device and earphone by earphone Download PDF

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Publication number
CN106210983A
CN106210983A CN201610541669.0A CN201610541669A CN106210983A CN 106210983 A CN106210983 A CN 106210983A CN 201610541669 A CN201610541669 A CN 201610541669A CN 106210983 A CN106210983 A CN 106210983A
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CN
China
Prior art keywords
signal
audio
digital signals
earphone
voice signal
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CN201610541669.0A
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Chinese (zh)
Inventor
赵燕鹏
徐敏龙
王东
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Goertek Inc
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Goertek Inc
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Priority to CN201610541669.0A priority Critical patent/CN106210983A/en
Publication of CN106210983A publication Critical patent/CN106210983A/en
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    • GPHYSICS
    • G10MUSICAL INSTRUMENTS; ACOUSTICS
    • G10LSPEECH ANALYSIS OR SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING; SPEECH OR AUDIO CODING OR DECODING
    • G10L13/00Speech synthesis; Text to speech systems
    • GPHYSICS
    • G10MUSICAL INSTRUMENTS; ACOUSTICS
    • G10LSPEECH ANALYSIS OR SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING; SPEECH OR AUDIO CODING OR DECODING
    • G10L13/00Speech synthesis; Text to speech systems
    • G10L13/02Methods for producing synthetic speech; Speech synthesisers
    • GPHYSICS
    • G10MUSICAL INSTRUMENTS; ACOUSTICS
    • G10LSPEECH ANALYSIS OR SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING; SPEECH OR AUDIO CODING OR DECODING
    • G10L19/00Speech or audio signals analysis-synthesis techniques for redundancy reduction, e.g. in vocoders; Coding or decoding of speech or audio signals, using source filter models or psychoacoustic analysis
    • GPHYSICS
    • G10MUSICAL INSTRUMENTS; ACOUSTICS
    • G10LSPEECH ANALYSIS OR SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING; SPEECH OR AUDIO CODING OR DECODING
    • G10L21/00Processing of the speech or voice signal to produce another audible or non-audible signal, e.g. visual or tactile, in order to modify its quality or its intelligibility
    • GPHYSICS
    • G10MUSICAL INSTRUMENTS; ACOUSTICS
    • G10LSPEECH ANALYSIS OR SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING; SPEECH OR AUDIO CODING OR DECODING
    • G10L21/00Processing of the speech or voice signal to produce another audible or non-audible signal, e.g. visual or tactile, in order to modify its quality or its intelligibility
    • G10L21/02Speech enhancement, e.g. noise reduction or echo cancellation
    • GPHYSICS
    • G10MUSICAL INSTRUMENTS; ACOUSTICS
    • G10LSPEECH ANALYSIS OR SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING; SPEECH OR AUDIO CODING OR DECODING
    • G10L21/00Processing of the speech or voice signal to produce another audible or non-audible signal, e.g. visual or tactile, in order to modify its quality or its intelligibility
    • G10L21/02Speech enhancement, e.g. noise reduction or echo cancellation
    • G10L21/0208Noise filtering
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04MTELEPHONIC COMMUNICATION
    • H04M1/00Substation equipment, e.g. for use by subscribers
    • H04M1/72Mobile telephones; Cordless telephones, i.e. devices for establishing wireless links to base stations without route selection
    • H04M1/724User interfaces specially adapted for cordless or mobile telephones
    • H04M1/72403User interfaces specially adapted for cordless or mobile telephones with means for local support of applications that increase the functionality
    • H04M1/7243User interfaces specially adapted for cordless or mobile telephones with means for local support of applications that increase the functionality with interactive means for internal management of messages
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04MTELEPHONIC COMMUNICATION
    • H04M1/00Substation equipment, e.g. for use by subscribers
    • H04M1/72Mobile telephones; Cordless telephones, i.e. devices for establishing wireless links to base stations without route selection
    • H04M1/724User interfaces specially adapted for cordless or mobile telephones
    • H04M1/72403User interfaces specially adapted for cordless or mobile telephones with means for local support of applications that increase the functionality
    • H04M1/7243User interfaces specially adapted for cordless or mobile telephones with means for local support of applications that increase the functionality with interactive means for internal management of messages
    • H04M1/72433User interfaces specially adapted for cordless or mobile telephones with means for local support of applications that increase the functionality with interactive means for internal management of messages for voice messaging, e.g. dictaphones
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04RLOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R3/00Circuits for transducers, loudspeakers or microphones
    • H04R3/02Circuits for transducers, loudspeakers or microphones for preventing acoustic reaction, i.e. acoustic oscillatory feedback
    • GPHYSICS
    • G10MUSICAL INSTRUMENTS; ACOUSTICS
    • G10LSPEECH ANALYSIS OR SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING; SPEECH OR AUDIO CODING OR DECODING
    • G10L21/00Processing of the speech or voice signal to produce another audible or non-audible signal, e.g. visual or tactile, in order to modify its quality or its intelligibility
    • G10L21/02Speech enhancement, e.g. noise reduction or echo cancellation
    • G10L21/0208Noise filtering
    • G10L2021/02087Noise filtering the noise being separate speech, e.g. cocktail party

Abstract

The invention discloses and a kind of realize the method for Kara OK function, device and earphone by earphone, the method includes receiving the voice signal that the mike of earphone gathers;Voice signal is carried out analog-to-digital conversion process, obtains audio digital signals;Filter the human voice signal in the digital music signal that earphone receives, obtain background music signal;Background music signal and audio digital signals are overlapped, obtain numbers pile up signal;Numbers pile up signal is carried out digital-to-analogue conversion process, obtains simulating superposed signal, and simulation superposed signal is sent the receiver to earphone.The background music signal of human voice signal in the singing voice signal of the singer of mike collection and elimination music signal is overlapped by the present invention by earphone, can only pass through earphone real-time implementation karaoke effect, promote Consumer's Experience.

Description

A kind of realize the method for Kara OK function, device and earphone by earphone
Technical field
The present invention relates to earphone K and sing field, more particularly it relates to an realize Kara OK function by earphone Method, device and earphone.
Background technology
Along with the progress of society, K song has been no longer necessary to come into dancing hall, karaoke chamber, and K song software achieves The effect of K song whenever and wherever possible.But, using K song software is to be recorded by the sound of singer, can after performance terminates Hearing the singing effect of singer, it is impossible to real-time implementation karaoke effect, Consumer's Experience is poor.
It is therefore proposed that a kind of processing method being realized real-time Kara OK function by earphone is the most valuable.
Summary of the invention
It is an object of the present invention to provide a kind of new solution being realized real-time Kara OK function by earphone.
According to the first aspect of the invention, it is provided that a kind of method realizing Kara OK function by earphone, including:
Receive the voice signal that the mike of earphone gathers;
Described voice signal is carried out analog-to-digital conversion process, obtains audio digital signals;
Filter the human voice signal in the digital music signal that described earphone receives, obtain background music signal;
Described background music signal and described audio digital signals are overlapped, obtain numbers pile up signal;
Described numbers pile up signal is carried out digital-to-analogue conversion process, obtains simulating superposed signal, and by described simulation superposition Signal sends the receiver to described earphone.
Optionally, described method also includes:
Detect and whether described audio digital signals comprises the amplitude part more than the first setting value, in this way, then filter institute State the human voice signal in the digital music signal that earphone receives, obtain background music signal;As no, then described digital music is believed Number carry out digital-to-analogue conversion process, obtain analog music signals, and described analog music signals is sent the receiver to described earphone.
Optionally, described method also includes:
The reverb signal that described background music signal is corresponding is added in described background music signal;
The reverb signal that described audio digital signals is corresponding is added in described audio digital signals.
Optionally, the voice signal of the mike collection of described reception earphone includes:
Receive the voice signal that the mike being arranged in a headset earpiece collects, as the first voice signal;
Receive the voice signal that the mike being arranged in another headset earpiece collects, as the second voice signal;
Described described voice signal is carried out analog-to-digital conversion process, obtain audio digital signals particularly as follows:
Described first voice signal and described second voice signal are carried out analog-to-digital conversion process respectively, obtains the of correspondence One audio digital signals and the second audio digital signals;
Described first audio digital signals and described second audio digital signals are carried out Wave beam forming process, obtains described Audio digital signals.
Optionally, described described first audio digital signals and described second audio digital signals are carried out Wave beam forming Process, obtain described audio digital signals and include:
Described first audio digital signals and described second audio digital signals are carried out Wave beam forming process;
Eliminate amplitude in the signal that Wave beam forming process obtains and, more than the part of the second setting value, obtain described digital speech Signal.
According to the second aspect of the invention, it is provided that a kind of device being realized Kara OK function by earphone, including:
Receiver module, for receiving the voice signal that the mike of earphone gathers;
Analog-to-digital conversion module, for described voice signal is carried out analog-to-digital conversion process, obtains audio digital signals;
Filter human voice signal's module, for filtering the human voice signal in the digital music signal that described earphone receives, obtain Background music signal;
Laminating module, for described background music signal and described audio digital signals being overlapped, obtains numeral folded Plus signal;And,
First D/A converter module, for described numbers pile up signal is carried out digital-to-analogue conversion process, obtains simulating superposition Signal, and described simulation superposed signal is sent the receiver to described earphone.
Optionally, described device also includes detection module and the second D/A converter module, and described detection module is used for examining Survey and whether described audio digital signals comprises in the described audio digital signals of detection whether comprise amplitude more than the first setting value Part, in this way, then control described in filter human voice signal's module filter described earphone receive digital music signal in voice Signal, obtains background music signal;As no, then control described second D/A converter module by described digital music signal number Mould conversion process, obtains analog music signals, and described analog music signals is sent the receiver to described earphone.
Optionally, described device also includes:
First adds reverb module, for adding the reverberation that described background music signal is corresponding in described background music signal Signal;
Second adds reverb module, for adding the reverberation that described audio digital signals is corresponding in described audio digital signals Signal.
Optionally, described receiver module includes:
First receives unit, for receiving the voice signal that the mike being arranged in a headset earpiece collects, as First voice signal;
Second receives unit, for receiving the voice signal that the mike being arranged in another headset earpiece collects, makees It it is the second voice signal;
First D/A converter module includes:
D/A conversion unit, for carrying out analog digital conversion respectively to described first voice signal and described second voice signal Process, obtain the first audio digital signals and second audio digital signals of correspondence;
Beam forming unit, for carrying out wave beam to described first audio digital signals and described second audio digital signals Formation processes, and obtains described audio digital signals.
Optionally, described beam forming unit includes:
Wave beam forming subelement, for carrying out ripple to described first audio digital signals and described second audio digital signals Bundle formation processes;
Eliminate subelement, process in the signal that obtains amplitude more than the part of the second setting value for eliminating Wave beam forming, Obtain described audio digital signals
According to the third aspect of the invention we, it is provided that a kind of earphone, Kara OK function is realized including aforesaid by earphone Device.
According to the fourth aspect of the invention, it is provided that a kind of earphone, including mike, processor and memorizer, described wheat Gram wind is used for gathering voice signal, and described memorizer is used for storing instruction for described memorizer, and described instruction is used for controlling institute State processor to carry out operating to perform the aforesaid method realizing Kara OK function by earphone.
It was found by the inventors of the present invention that in the prior art, there is K song software can not the asking of real-time implementation karaoke effect Topic.And in the present invention, the singing voice signal of singer mike gathered by earphone and people in elimination music signal The background music signal of acoustical signal is overlapped, and can only pass through earphone real-time implementation karaoke effect, promotes Consumer's Experience.Cause This, that technical assignment that the present invention is to be realized or the those skilled in the art of technical problem is that to be solved never expect or Person it is not expected that, therefore the present invention is a kind of new technical scheme.
By detailed description to the exemplary embodiment of the present invention referring to the drawings, the further feature of the present invention and Advantage will be made apparent from.
Accompanying drawing explanation
Combined in the description and the accompanying drawing of the part that constitutes description shows embodiments of the invention, and even With its explanation together for explaining the principle of the present invention.
Fig. 1 is the flow process of a kind of embodiment according to a kind of method being realized Kara OK function by earphone of the present invention Figure;
Fig. 2 is the flow process of the another embodiment according to a kind of method being realized Kara OK function by earphone of the present invention Figure;
Fig. 3 is that to implement the square frame of structure according to a kind of device being realized Kara OK function by earphone of the present invention a kind of former Reason figure;
Fig. 4 is a kind of schematic diagram implementing structure according to a kind of earphone of the present invention.
Description of reference numerals:
1-headset earpiece;2-earphone cord;
3-controls box;4-headset plug.
Detailed description of the invention
The various exemplary embodiments of the present invention are described in detail now with reference to accompanying drawing.It should also be noted that unless additionally have Body illustrates, the parts illustrated the most in these embodiments and positioned opposite, the numerical expression of step and numerical value are not intended to this The scope of invention.
Description only actually at least one exemplary embodiment is illustrative below, never as to the present invention And any restriction applied or use.
May be not discussed in detail for technology, method and apparatus known to person of ordinary skill in the relevant, but suitable In the case of when, described technology, method and apparatus should be considered a part for description.
It is shown here that any occurrence should be construed as merely exemplary with in all examples discussed, and not It is as restriction.Therefore, other example of exemplary embodiment can have different values.
It should also be noted that similar label and letter represent similar terms, therefore, the most a certain Xiang Yi in following accompanying drawing Individual accompanying drawing is defined, then need not it is further discussed in accompanying drawing subsequently.
The present invention solves existing K song software can not the problem of real-time implementation karaoke effect, it is provided that one passes through ear Machine realizes the new technical scheme of Kara OK function.
Fig. 1 is the flow chart of a kind of embodiment of a kind of method being realized Kara OK function by earphone of the present invention.
According to Fig. 1, the inventive method comprises the steps:
Step S101, receives the voice signal that mike gathers.
Concrete, if earphone only has one is arranged on the mike controlled in box or a headset earpiece, then receive The voice signal that this mike gathers, to carry out subsequent step process.
Step S102, carries out analog-to-digital conversion process to voice signal, obtains audio digital signals.
The voice signal of simulation is converted to audio digital signals, OK a karaoke club can be realized by the dsp processor in earphone OK function, analogue signal then cannot realize Kara OK function by processor.
Step S103, filters the human voice signal in the digital music signal that earphone receives, obtains background music signal.
In digital music signal, the feature of original singer is roughly divided into two kinds: the acoustic image positions of voice is in whole sound field Centre (left and right acoustic channels balanced distribution);The sound frequency of voice concentrates on intermediate frequency and HFS.Therefore, the number that earphone receives is filtered Human voice signal in word tone music signal, is specifically as follows reciprocity sound and the frequency set filtering left and right acoustic channels in digital music signal In at intermediate frequency and the sound of HFS, it becomes possible to obtain background music signal.
Can also is that and the music file that electronic equipment is play comprises twin track: original singer's track and vocal accompaniment track, by control The electronic equipment switching track that system is connected with earphone, to realize the switching between original singer and vocal accompaniment, obtains background music signal.
Step S104, is overlapped background music signal and audio digital signals, obtains numbers pile up signal.
Step S105, after numbers pile up signal is carried out digital-to-analogue conversion process, sends to headset earpiece.
Owing to headset earpiece could can only be driven by analogue signal, therefore, numbers pile up signal need to be carried out digital-to-analogue and turn Change process, after obtaining simulating superposed signal, send to headset earpiece.
So, by background music signal and audio digital signals being overlapped, then carry out digital-to-analogue conversion process, send To headset earpiece so that wearer can either hear background music, can hear again the sound that wearer sings simultaneously, it becomes possible to Make earphone real-time implementation karaoke effect.
Wherein, the unlatching of Kara OK function can be to be controlled by the button on earphone etc., it is also possible to is that earphone is opened automatically Open.In one particular embodiment of the present invention, the inventive method also includes: whether comprise amplitude in detection audio digital signals More than the part of the first setting value, in this way, then perform step S103;As no, then digital music signal is carried out at digital-to-analogue conversion Reason, obtains analog music signals, and analog music signals is sent the receiver to earphone.
During wearing at earphone, the face distance microphone of wearer closest, if wearer sings, Then the amplitude of this singing signal is maximum, therefore by whether comprising amplitude more than the first setting value in detection audio digital signals Part, it can be determined that whether wearer is singing, if it is, open Kara OK function, as no, then plays the sound that earphone receives Music signal.So, it is achieved that and automatically turns on the function of Karaoke.
In another specific embodiment of the present invention, the present invention can also realize by having the earphone of two mikes Kara OK function, Fig. 2 is the stream of the another embodiment of a kind of method being realized Kara OK function by earphone of the present invention Cheng Tu.
As in figure 2 it is shown, the method comprises the following steps:
Step S201, receives the first voice signal and the second voice signal.
Specifically, receive the voice signal that the mike being arranged in a headset earpiece collects, as the first voice letter Number, receive the voice signal that the mike being arranged in another headset earpiece collects, as the second voice signal, in order to respectively Process.
Meanwhile, if being mounted on mike on the two of earphone receivers, this earphone can also pass through the two mike Realizing active noise reduction and the function of call noise reduction, wherein, active noise reduction is to process to obtain the microphone signal pair that mike gathers The anti-phase microphone signal answered, and play this anti-phase microphone signal by headset earpiece, thus realize the effect of noise reduction;Call Noise reduction is specifically as follows elimination the first noise in speech signal signal, and is sent extremely by the first voice signal eliminating noise signal In the electronic equipment that earphone connects.
Concrete, during call, two mikes gather people's voice and the noise of surrounding, when human ear is normally worn, face In the vertical direction is positioned in the middle of two ears, in the ideal situation, and the distance of first mike to face and second mike Equal to the distance of face, so, first mike and second mike receive the same sound letter that people's face sends Number time be identical;Generally, first mike to the distance of noise source with second mike to noise source Distance unequal, so, result in and deposit between the time that two mikes receive the same noise signal that noise source sends In time difference.In practical situations both, the distance not phase of first mike distance to face and second mike to face Deng, it is therefore contemplated that face deviates certain angle on the vertical direction of distance two ear central point, face is at this angular range Time interior, the time difference that two mikes receive the acoustical signal that face sends should not exceed setting value Δ T.So, from In the microphone signal that one mike receives, extract and feature phase in microphone signal that second mike receives With but time difference is not more than setting value Δ T composition, the acoustical signal sent as face;Receive from first mike In microphone signal, extract identical with feature in the microphone signal that second mike receives but receive time difference and be more than The composition of the signal of setting value Δ T, as noise signal, this noise signal anti-phase, just obtain, phase identical with noise amplitude signal The de-noising signal that position is contrary, sets sending the electronics connected as earphone after this de-noising signal and the first voice signal overlap-add procedure Standby.So, this earphone can be realized as, by two mikes, noise reduction of conversing.
There is the earphone of two mikes while being capable of Kara OK function, additionally it is possible to realize active noise reduction and lead to The function of words noise reduction.
Step S202, carries out analog-to-digital conversion process respectively to the first voice signal and the second voice signal, obtains the first number Word voice signal and the second audio digital signals.
Specifically, the first voice signal is carried out analog-to-digital conversion process, obtain the first audio digital signals;To the second voice Signal carries out analog-to-digital conversion process, obtains the second audio digital signals.
Step S203, carries out Wave beam forming process by the first audio digital signals and the second audio digital signals.
First audio digital signals and the second audio digital signals are carried out Wave beam forming process, so that Mike's elegance The sound that in the voice signal of collection, wearer sings becomes apparent from, and wherein, Wave beam forming processes mainly can suppress the first voice In signal and the second voice signal during earphone is worn the acoustical signal of left and right directions, export the sound of a road fore-and-aft direction The sound that signal, i.e. wearer are sung.
Wherein, Wave beam forming refers to each array element of multispot array certain geometrical shape (straight line, cylinder, arc etc.) arranged Output is through processing the method that (such as weighting, time delay, summation etc.) form space directivity.Broadside microphone array refers to that one is The orientation of row mike is vertical with sound wave direction to be picked up.D is the spacing of two microphone elements in array.From battle array The sound on col width limit generally seeks to the sound of pickup.Broadside array can be realized by basic handling, the mike in array It is simply added together.The shortcoming of this type of array is that it can only be decayed from the sound of array side.Rear response rings with front all the time Should be consistent, because array has axial symmetry, it is impossible to distinguish from front and the acoustic pressure wave arriving mike from rear.At diamylose gram In wind broadside array, the minima of response occurs in 90 ° and 270 °.The signal attenuation of these points depends greatly on frequency Rate.When the half-wavelength of incident frequencies is close to the spacing of mike, response is close to being completely counterbalanced by.Wheat for two spacing 75mm The array of gram wind composition, in theory, when frequency is about 2.3kHz (343m/s ÷ (0.075m × 2) ≈ 2.3kHz), has responded Full counteracting.During higher than the frequency of desired attenuation, frequency is by aliasing, and polar coordinate response starts to show zero point in other angle.Now, Side decay starts again at reduction.
Concrete, use full directional microphone due in earphone more, namely can respond equably from from all directions Sound.Two mikes can be configured to array, forms orientation response or beam pattern.Through design, beam shaping Mike Wind array can be more sensitive to the sound from one or more specific directions.So, processed by Wave beam forming, can be by Noise signal in one voice signal and the second voice signal filters out, and obtains the acoustical signal of the singing become apparent from.
Step S204, removes amplitude in the signal that Wave beam forming process obtains and, more than the part of the second setting value, is counted Word voice signal.
Wherein, remove Wave beam forming and process and obtain amplitude in signal and be more than the part of the second setting value and utter long and high-pitched sounds, due to Mike is arranged in headset earpiece, may produce ear-piercing uttering long and high-pitched sounds, and hears in order to avoid human ear and utters long and high-pitched sounds, produces poor use Family is experienced, and can eliminate amplitude in the signal that Wave beam forming process obtains and exceed the part of setting value.
The condition produced of uttering long and high-pitched sounds need to meet 3 points: microphone uses with audio amplifier simultaneously;The sound that sound system is reset can lead to Cross space and pass to microphone;The acoustic energy that audio amplifier sends is sufficiently large, and the pickup sensitivity of microphone is sufficiently high.
Eliminate feedback squealing to start with, as long as one of them condition can be destroyed, just from the essential condition producing feedback squealing Can reach purpose.The method eliminating feedback squealing includes:
A) distance method is adjusted
Not only avoiding uttering long and high-pitched sounds but also can promote one of the volume most efficient method that amplifies is exactly close proximity to sound source pickup by microphone, Microphone should use non-direction simultaneously.Particularly, directional microphone (the sharpest directional microphone) remote sound source Pickup decay is the least, adjusts distance and amplifies volume to promoting and prevent the effect uttered long and high-pitched sounds little.Sound reinforcement system is the most easily uttered long and high-pitched sounds, Sensitivity with microphone is not directly dependent upon.The most highly sensitive microphone is all sharp directivity, easily produces to utter long and high-pitched sounds and stops ?.Shorten the distance of audible device and audience, the loudness amplified can essentially be promoted.Total increasing of reduction system that can be suitable Benefit.If be aided with the near field audio amplifier that directivity is wide simultaneously, microphone is somewhat just avoided that from far point and utters long and high-pitched sounds.
For the directly feedback sound field of speaker, it is simply that microphone is the most remote away from speaker more good, and speaker is got over away from audience Near the best.Microphone should be placed on the back side of speaker radiation direction, is gone about if microphone likely holds, and speaker should be put Place that cannot be in close proximity at microphone.
B) frequency equilibrium method (broadband wave trap method)
Owing to the frequency curve of microphone pickup and audible device is not that (particularly some mass ratioes are relatively for the straight line of ideal flat The tone playing equipment of difference), and the acoustic resonance effect of hall sound field, make frequency response rise and fall the biggest.Frequency equalizer can be used Compensating public address curve, the straight line that the frequency response furnishing of system is approximated, the gain making each frequency range is basically identical, improves system Sound transmission gain.
The equalizer of more than 21 sections should be used, parametric equalizer should be configured in the place requiring comparison high, it is desirable to more Gao Shi, can use feedback suppressor.Actually sound reinforcement system is when there is feedback self-oscilation, and its frequency is only integrally fixed in certain point Pure tone, so, as long as with the narrowest wave trap of frequency band by this frequency ablations, can suppression system utter long and high-pitched sounds.
C) feedback suppressor method (arrowband wave trap method)
In exigent occasion, such as the place of some live performance, it is common to use the automatic restraining device of audible feedback, this Plant device can automatically to adjust Q-value bandwidth from motion tracking feedback point frequency, automatically acoustic feedback eliminated and protect to greatest extent Protect tonequality.Its principle is through what trap suppression was uttered long and high-pitched sounds.The FBX series feedback suppressor of such as Sabine, it is a kind of Limited device by the 9 of microcomputerized control sections of arrowbands from dynamic pressure, can preferably distinguish feedback self-oscilation signal and music signal, can be When self-excitation occurs in system, reacting rapidly, and set a digital filter the narrowest on feedback frequency, its notch depth is also Can automatically set, filtering bandwidth only has third-octave, the narrowest trap frequency range, has loudness and tone color hardly Impact.
D) anti-phase method of offset
Anti-phase counteracting prevents self-excitation relatively common at high-frequency amplifier circuit.Two can be used together in audio amplifier circuit The microphone of specification picks up direct sound wave and reflected sound respectively, makes reflected sound signals phase place before entering power amplifier mutual by negative circuit Offset, can effectively prevent self-excitation of uttering long and high-pitched sounds.
E) phase modulation method
The self-excitation of public address system is uttered long and high-pitched sounds, and its feedback circuit is positive feedback, if microphone signal phase modulation is processed, will destroy The phase condition of self-excitation, thus the self-excitation of anti-locking system is uttered long and high-pitched sounds.Data is had to show, when digital baseband input signal is at 140 °, degree of stability Best;Further, the frequency of modulation is the highest, and the stability of system is the best.In order to the tonequality after making process does not occur the biggest distortion, The maximum permissible value of its phase modulation frequency is 4Hz.
In the present embodiment, remove amplitude in the signal that the method uttered long and high-pitched sounds can also obtain for eliminating Wave beam forming to process to surpass Cross the part of the second setting value, so, just uttering long and high-pitched sounds of generation is filtered out, play back without headset earpiece so that human ear is not Can hear and utter long and high-pitched sounds, promote Consumer's Experience.
Step S205, adds the reverb signal that this audio digital signals is corresponding in audio digital signals.
So that the sound that wearer sings realizes the audio of Karaoke, this number can be added in audio digital signals The reverb signal that word voice signal is corresponding.
Wherein, sound wave, when indoor propagation, will be reflected by barriers such as wall, ceiling, floors, often reflect and once will Absorbed by barrier.So, after sound source stops sounding, sound wave will be through multiple reflections and absorption in indoor, Disappearing, we just feel that sound source also has the mixing of several sound waves to continue for some time after stopping sounding, and this phenomenon is called mixed Ring.
As a example by reflection three times, the method for the reverb signal obtaining audio digital signals can be:
Audio digital signals is carried out the first delay process, generates the first signal;Audio digital signals is carried out second prolong Time process and frequency domain compression filtering process, generate secondary signal;Audio digital signals is carried out the 3rd delay process and frequency domain pressure Contracting Filtering Processing, generates the 3rd signal;Using the first acoustical signal, secondary signal and the 3rd signal syntheses the 4th signal as reverberation Signal.
Wherein, the number of times of delay process is identical with order of reflection, can be more than three times, can be more.
In audio digital signals, add the reverb signal that this audio digital signals is corresponding, earphone wearer can be made to experience To stereosonic audio, promote Consumer's Experience.
Whether step S206, comprise the amplitude part more than the first setting value in detection audio digital signals, the most then hold Row step S207;As no, then perform step S211.
So can automatically control the unlatching of Kara OK function.
Step S207, filters the human voice signal in the digital music signal that earphone receives, obtains background music signal.
Step S208, adds the reverb signal that this background music signal is corresponding in background music signal.
In order to realize the audio of Karaoke, corresponding the mixing of this background music signal can be added in background music signal Ring.The method of the reverberation that concrete grammar is corresponding with adding this audio digital signals in audio digital signals is similar to, at this no longer Repeat.
Step S209, is overlapped background music signal and audio digital signals, obtains numbers pile up signal.
Step S210, after numbers pile up signal is carried out digital-to-analogue conversion process, sends to headset earpiece.
Step S211, after digital music signal is carried out digital-to-analogue conversion process, sends to headset earpiece.
Present invention also offers a kind of K for earphone and sing processing means, Fig. 3 is a kind of side implementing structure of this device Frame schematic diagram.
According to Fig. 3, this device 300 includes receiver module 301, analog-to-digital conversion module 302, filters human voice signal's module 303, laminating module 304 and the first D/A converter module 305.
Above-mentioned receiver module 301, for receiving the voice signal that the mike of earphone gathers.
Above-mentioned analog-to-digital conversion module 302, for described voice signal is carried out analog-to-digital conversion process, obtains digital speech letter Number.
Above-mentioned filter human voice signal's module 303, for filtering the voice letter in the digital music signal that described earphone receives Number, obtain background music signal.
Above-mentioned laminating module 304, for described background music signal and described audio digital signals being overlapped, obtains Numbers pile up signal.
Above-mentioned first D/A converter module 305, for described numbers pile up signal is carried out digital-to-analogue conversion process, obtains mould Intend superposed signal, and simulation superposed signal is sent the receiver to earphone.
Further, this device 300 also includes detection module and the second D/A converter module, and this detection module is used for detecting Whether audio digital signals comprises in detection audio digital signals and whether comprise the amplitude part more than the first setting value, as It is then to control to filter human voice signal's module and filter the human voice signal in the digital music signal that earphone receives, obtain background music Signal;As no, then control the second D/A converter module and digital music signal is carried out digital-to-analogue conversion process, obtain analog music letter Number, and analog music signals is sent the receiver to earphone.
Wherein, receiver module includes that the first reception unit and second receives unit, and this first reception unit is used for receiving peace The voice signal that the mike being contained in a headset earpiece collects, as the first voice signal;This second reception unit is used for Receive the voice signal that the mike being arranged in another headset earpiece collects, as the second voice signal.First digital-to-analogue turns Die change block includes D/A conversion unit and beam forming unit, and this D/A conversion unit is for the first voice signal and the second language Tone signal carries out analog-to-digital conversion process respectively, obtains the first audio digital signals and second audio digital signals of correspondence;This ripple Bundle forms unit and is used for the first audio digital signals and the second audio digital signals are carried out Wave beam forming process, obtains numeral language Tone signal.
Further, beam forming unit includes Wave beam forming subelement and eliminates subelement, this Wave beam forming subelement For the first audio digital signals and the second audio digital signals are carried out Wave beam forming process;This elimination subelement is used for eliminating Wave beam forming processes amplitude in the signal obtained and, more than the part of the second setting value, obtains audio digital signals.
Concrete, this device 300 also includes that first adds reverb module and second and add reverb module, and this first adds reverb module For adding the reverb signal that background music signal is corresponding in background music signal;This second adds reverb module in numeral Voice signal adds the reverb signal that audio digital signals is corresponding.
Present invention also offers a kind of earphone, on the one hand, this earphone includes aforesaid by earphone realization Karaoke merit The device 300 of energy.
On the other hand, this earphone includes memorizer and processor, and wherein, memorizer is used for storing instruction, this instruction control Processor processed carries out operating to perform the aforesaid method realizing Kara OK function by earphone.
This earphone includes headset earpiece 1, earphone cord 2, controls box 3 and headset plug 4, as shown in Figure 4, wherein, this earphone For digital earphone, headset plug 4 is USB plug.This earphone also includes the mike for gathering voice signal, if this earphone Having a mike, this mike may be mounted on control box 3 or in a headset earpiece 1;If this earphone has Two mikes, each mike may be mounted in different headset earpiece 1.
This processor can be such as DSP digital processing unit.This memorizer such as includes ROM (read only memory), RAM The nonvolatile memory etc. of (random access memory), such as hard disk.
Although by example, some specific embodiments of the present invention have been described in detail, but the skill of this area Art personnel are it should be understood that example above is merely to illustrate rather than in order to limit the scope of the present invention.The skill of this area Art personnel are it should be understood that can modify to above example without departing from the scope and spirit of the present invention.This Bright scope is defined by the following claims.

Claims (12)

1. the method realizing Kara OK function by earphone, it is characterised in that including:
Receive the voice signal that the mike of earphone gathers;
Described voice signal is carried out analog-to-digital conversion process, obtains audio digital signals;
Filter the human voice signal in the digital music signal that described earphone receives, obtain background music signal;
Described background music signal and described audio digital signals are overlapped, obtain numbers pile up signal;
Described numbers pile up signal is carried out digital-to-analogue conversion process, obtains simulating superposed signal, and by described simulation superposed signal Send the receiver to described earphone.
Method the most according to claim 1, it is characterised in that described method also includes:
Detect and whether described audio digital signals comprises the amplitude part more than the first setting value, in this way, then filter described ear Human voice signal in the digital music signal that machine receives, obtains background music signal;As no, then described digital music signal is entered Line number mould conversion process, obtains analog music signals, and described analog music signals is sent the receiver to described earphone.
Method the most according to claim 1, it is characterised in that described method also includes:
The reverb signal that described background music signal is corresponding is added in described background music signal;
The reverb signal that described audio digital signals is corresponding is added in described audio digital signals.
Method the most according to claim 1, it is characterised in that the voice signal bag that the mike of described reception earphone gathers Include:
Receive the voice signal that the mike being arranged in a headset earpiece collects, as the first voice signal;
Receive the voice signal that the mike being arranged in another headset earpiece collects, as the second voice signal;
Described described voice signal is carried out analog-to-digital conversion process, obtain audio digital signals particularly as follows:
Described first voice signal and described second voice signal are carried out analog-to-digital conversion process respectively, obtains the first number of correspondence Word voice signal and the second audio digital signals;
Described first audio digital signals and described second audio digital signals are carried out Wave beam forming process, obtains described numeral Voice signal.
Method the most according to claim 4, it is characterised in that described to described first audio digital signals and described second Audio digital signals carries out Wave beam forming process, obtains described audio digital signals and includes:
Described first audio digital signals and described second audio digital signals are carried out Wave beam forming process;
Eliminate amplitude in the signal that Wave beam forming process obtains and, more than the part of the second setting value, obtain described digital speech letter Number.
6. the device being realized Kara OK function by earphone, it is characterised in that including:
Receiver module, for receiving the voice signal that the mike of earphone gathers;
Analog-to-digital conversion module, for described voice signal is carried out analog-to-digital conversion process, obtains audio digital signals;
Filter human voice signal's module, for filtering the human voice signal in the digital music signal that described earphone receives, obtain background Music signal;
Laminating module, for described background music signal and described audio digital signals being overlapped, obtains numbers pile up letter Number;And,
First D/A converter module, for described numbers pile up signal is carried out digital-to-analogue conversion process, obtains simulating superposed signal, And described simulation superposed signal is sent the receiver to described earphone.
Device the most according to claim 6, it is characterised in that described device also includes detection module and the second digital-to-analogue conversion Module, whether whether described detection module be used for detecting in described audio digital signals and comprise in the described audio digital signals of detection Comprise the amplitude part more than the first setting value, in this way, then filter human voice signal's module described in control and filter the reception of described earphone Digital music signal in human voice signal, obtain background music signal;As no, then controlling described second D/A converter module will Described digital music signal carries out digital-to-analogue conversion process, obtains analog music signals, and described analog music signals is sent extremely The receiver of described earphone.
Device the most according to claim 6, it is characterised in that described device also includes:
First adds reverb module, for adding the reverberation letter that described background music signal is corresponding in described background music signal Number;
Second adds reverb module, for adding the reverberation letter that described audio digital signals is corresponding in described audio digital signals Number.
Device the most according to claim 6, it is characterised in that described receiver module includes:
First receives unit, for receiving the voice signal that the mike being arranged in a headset earpiece collects, as first Voice signal;
Second receives unit, for receiving the voice signal that collects of mike being arranged in another headset earpiece, as the Two voice signals;
First D/A converter module includes:
D/A conversion unit, for carrying out respectively at analog digital conversion described first voice signal and described second voice signal Reason, obtains the first audio digital signals and second audio digital signals of correspondence;
Beam forming unit, for carrying out Wave beam forming to described first audio digital signals and described second audio digital signals Process, obtain described audio digital signals.
Device the most according to claim 9, it is characterised in that described beam forming unit includes:
Wave beam forming subelement, for carrying out wave beam shape to described first audio digital signals and described second audio digital signals One-tenth processes;
Eliminate subelement, more than the part of the second setting value, obtain for eliminating amplitude in the signal that Wave beam forming process obtains Described audio digital signals.
11. 1 kinds of earphones, it is characterised in that include the device according to any one of claim 6-10.
12. 1 kinds of earphones, it is characterised in that mike, processor and memorizer, described mike is used for gathering voice signal, Described memorizer is used for storing instruction for described memorizer, and described instruction is used for controlling described processor and carries out operating to perform According to the method according to any one of claim 1-5.
CN201610541669.0A 2016-07-11 2016-07-11 A kind of realize the method for Kara OK function, device and earphone by earphone Pending CN106210983A (en)

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