CN103744335B - A kind of embedded digital sound-effect processing equipment - Google Patents
A kind of embedded digital sound-effect processing equipment Download PDFInfo
- Publication number
- CN103744335B CN103744335B CN201410041230.2A CN201410041230A CN103744335B CN 103744335 B CN103744335 B CN 103744335B CN 201410041230 A CN201410041230 A CN 201410041230A CN 103744335 B CN103744335 B CN 103744335B
- Authority
- CN
- China
- Prior art keywords
- audio
- effect processing
- input
- sound
- audio 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.)
- Active
Links
Landscapes
- Reverberation, Karaoke And Other Acoustics (AREA)
- Circuit For Audible Band Transducer (AREA)
Abstract
The present invention provides a kind of embedded digital sound-effect processing equipment, including audio input unit, audio treatment unit and single-chip microcomputer；Audio input unit electrically connects with audio treatment unit, and audio treatment unit electrically connects with single-chip microcomputer.Audio input unit sends to audio treatment unit after receiving audio signal；The first audio effect processing chip in audio treatment unit inputs superposition gain to each road, generates audio signal A and send to the second audio effect processing chip through audio effect processing after superposition；Second audio effect processing chip includes analog switch, selects it to move towards through analog switch after the audio signal after being processed by PC end sound card and audio signal A synthetic audio signal B；Single-chip microcomputer electrically connects with analog switch, selects the output of audio signal to record to recoding unit for controlling audio signal transmission to sound equipment output and control analog switch.The present invention realizes many people K song at home and enjoys the functions such as specialty audio effect processing effect, light portable, multiple record type.
Description
Technical field
The present invention relates to audio effect processing field, particularly relate to a kind of embedded digital sound-effect processing equipment.
Background technology
Along with the raising of people's living standard, increasing people starts to focus on entertainment life, various sings
Movable holds, and the KTV that gets together between friend after work sings heartily, all be unable to do without the broadcasting of music.People are except enjoying open air
Various music entertainment activities happy, also can want to lustily sing a song to loosen the when that the free time being in play, it would be desirable to open computer,
Play music and just can enjoy the enjoyment of specialty K song.But the musical instruments function in family is limited, does not often reach KTV special secondary school
The special K of industry facility sings effect, the most to one's disappointment.The most also be provided with being in also can enjoy specialty Karaoke drill
Sing the professional equipment of effect, but the most bulky, quality is heavy and expensive, non-common people can consume.It is therefore desirable to carry
It is in for a kind of people of allowing and also can enjoy the professional K song acoustics being in karaoke chamber, and the light many people of portable support are same
Time K sing the embedded digital sound-effect processing equipment enjoyed oneself to the full.
Summary of the invention
In order to solve the problems referred to above, the present invention proposes a kind of embedded digital sound-effect processing equipment, mainly can realize many
People K at home sings and enjoys the functions such as specialty audio effect processing effect, light portable, multiple record type.
For solving above-mentioned technical problem, the technical scheme that the present invention uses is:
There is provided a kind of embedded digital sound-effect processing equipment, including audio input unit, audio treatment unit and single-chip microcomputer；
Described audio input unit electrically connects with audio treatment unit, and described audio treatment unit electrically connects with described single-chip microcomputer.
Described audio input unit includes mike input, musical instrument input and the input of external source of sound, is used for receiving audio frequency letter
Send to described audio treatment unit after number；
Described audio treatment unit includes the first audio effect processing chip and the second audio effect processing chip of electrical connection；
The superposition carry out secondary after the input of described mike is carried out gain process of described first audio effect processing chip
Again superpose and gain with except mike input Wai Ge road inputs after gain, generate audio signal A after superposition through audio effect processing
Rear transmission is to described second audio effect processing chip；
Described second audio effect processing chip includes analog switch, for by PC end through sound card process after audio signal with
It is selected to move towards through described analog switch after described audio signal A synthetic audio signal B；
Described single-chip microcomputer electrically connects with described analog switch, is used for controlling audio signal and sends to sound equipment output and control institute
State analog switch and select the output of audio signal.
Wherein, described first audio effect processing chip includes gain circuitry, first adder and sound effect processing circuit, described wheat
The input of gram wind electrically connects with first adder after connecting gain circuitry, and described first adder is electrically connected with described sound effect processing circuit
Connect.
Wherein, described second audio effect processing chip also includes second adder and the 3rd adder, at described first audio
The outfan of reason chip and except microphone input termi-nal Wai Ge road input input with described second adder respectively electrically connects,
The outfan of described second adder is electrically connected input and the first input end of the 3rd adder of described analog switch,
Second input of described 3rd adder electrically connects with described PC end sound card outfan, the outfan of described 3rd adder
Electrically connect with the input of described analog switch；Described analoging switch output end electrically connects with PC end sound card.
Wherein, described single-chip microcomputer turns serial ports, reset unit and encryption chip respectively and electrically connects with U.
Wherein, described embedded digital sound-effect processing equipment also includes recoding unit, described recoding unit and described simulation
For offer, switch electrical connection, includes that the synthesis recording of mike external sound source and mike external sound source synthesize with PC end source of sound
Recording.
Wherein, the input of described mike includes two-way or the above interface of two-way.
Wherein, two or more peripheral earphone interfaces are also included.
The method have the benefit that: present invention difference is bulky with prior art device, acoustic gain is inadequate
Greatly, input mode is single and recording mode is fixing etc. causes the problem that K song audio is the best at home, the present invention to provide a kind of embedded
Audio & video coding standard device, mainly includes audio input unit, recoding unit, audio treatment unit and single-chip microcomputer；Audio frequency inputs
Unit is electrically connected by audio treatment unit, and audio processing chip electrically connects with single-chip microcomputer and recoding unit respectively.Specifically have
Advantages below:
1, by audio frequency after the special sound effect process of audio treatment unit after voice data is received by audio input unit
Gain, and can by noise control within the specific limits to desirable amount, it is achieved that the acoustics of KTV scene K song.Concrete,
Mike input in each road carried out after respective gain process superposition and again after gain and except wheat by the first audio effect processing chip
The input superposition of gram wind input Wai Ge road generates audio signal A and is respectively sent to the second audio effect processing chip after audio effect processing
Analog switch and second adder；The audio signal that mike inputs has carried out the gain amplifier process of twice, and noise will
Substantially weaken, can be by noise control in certain value after by the debugging gain of twice, and the signal of mike can obtain
Preferably gain effect.And the second audio effect processing chip PC end is divided into after sound card processes the audio signal of left and right acoustic channels with
Send to analog switch after audio signal A synthetic audio signal B；By analog switch audio signal A to receiving and audio frequency letter
It selects signal to send to recoding unit to record by Single-chip Controlling for number B.
2, audio input unit includes that the mike input etc. of musical instrument input, the input of external source of sound and at least two-way is multiple defeated
Enter mode, take leave of single input mode, it is provided that people more select, be possible not only to many people and carry out K song enjoyment simultaneously, also may be used
To connect the self-service accompaniments of musical instrument such as electric guitar, increase the enjoyment of K song.
3, to also provide for the recording mode of two kinds available for a kind of embedded digital sound-effect processing equipment of the present invention,
By being selected to send the audio signal of recoding unit by Single-chip Controlling analog switch, concrete, it is provided that mike input is with happy
The mike external sound source of the superpositions such as device input, external source of sound input synthesizes recording mode and by the input of all audio frequency and PC
Mike external sound source after end source of sound superposition synthesizes recording mode two kinds with PC end source of sound.The selection of recording mode can be passed through
The application software electrically connected with single-chip microcomputer realizes, and diversified recording mode is available for people and selects according to different hobbies, more
Hommization.
Accompanying drawing explanation
Fig. 1 is the block diagram of the present invention a kind of embedded digital sound-effect processing equipment；
Fig. 2 is the gain circuitry in the present invention a kind of embedded digital sound-effect processing equipment specific embodiment；
Fig. 3 is in the present invention a kind of embedded digital sound-effect processing equipment specific embodiment in the first audio effect processing chip
Partial circuit diagram.
Label declaration:
1, audio input unit；2, audio treatment unit；3, single-chip microcomputer；
4, mike input；5, musical instrument input；6, external source of sound input；
7, the first audio effect processing chip；8, the second audio effect processing chip；9, analog switch；
10, gain circuitry；11, first adder；12, sound effect processing circuit；
13, second adder；14, the 3rd adder；15, PC end sound card；
16, U turns serial ports；17, reset unit；18, encryption chip；
19, recoding unit；20, earphone.
Detailed description of the invention
By describing the technology contents of the present invention, structural feature in detail, being realized purpose and effect, below in conjunction with embodiment
And coordinate accompanying drawing to be explained in detail.
Refer to the structured flowchart that Fig. 1 to Fig. 3, Fig. 1 are present embodiment a kind of embedded digital sound-effect processing equipment.One
Plant embedded digital sound-effect processing equipment, including audio input unit 1, audio treatment unit 2 and single-chip microcomputer 3；Described audio frequency is defeated
Entering unit 1 to electrically connect with audio treatment unit 2, described audio treatment unit 2 electrically connects with described single-chip microcomputer 3.Described audio frequency is defeated
Enter unit 1 and include mike input 4, musical instrument input 5 and external source of sound input 6, send to described after being used for receiving audio signal
Audio treatment unit 2.There is provided multiple input modes to provide people more to select, the musical accompaniments such as electric guitar or increase can be connected
The input of external source of sound, increases K Nikkei interest, it is achieved multi-functional audio mixing.
Described audio treatment unit 2 includes the first audio effect processing chip 7 and the second audio effect processing chip 8 of electrical connection；Institute
State the first audio effect processing chip 7 after described mike input 4 is carried out after gain process superposition and carries out secondary gain with
Input superposition again gain except mike inputs 4 Wai Ge roads, after superposition generate audio signal A send after audio effect processing to
Described second audio effect processing chip 8；Described second audio effect processing chip 8 includes analog switch 9, is used for PC end at sound card
It is selected to move towards through described analog switch 9 after audio signal after reason and described audio signal A synthetic audio signal B；Described list
Sheet machine 3 electrically connects with described analog switch 9, is used for controlling audio signal and sends to sound equipment output and control described analog switch 9
Select the output of audio signal.The first audio effect processing chip 7 in above-mentioned audio treatment unit 2 is responsible for inputting multichannel mike
The audio frequency of 4 each amplifies through once-through operation and adjusts superposition after gain and again carry out secondary operation amplifier and adjust gain, by two
Mike after the process of secondary gain amplifier inputs 4 audio frequency and noise maximizes weakening and controls in the preferred range, not only will
Mike inputs 4 audio frequency and maximizes noise reduction, and reaches preferable gain effect simultaneously.And the second audio effect processing chip 8 be responsible for right
Reach the perfect Gain and mike that noise reduction is crossed has inputted 4 audio signals and musical instrument input 5 and the reception of other external sources of sound
Audio signal carries out third time superposition gain process and generates audio signal A, and the second audio effect processing chip 8 is also responsible for audio signal
The outfan output of A and PC end sound card 15 is divided into the audio signal of left and right acoustic channels after sound card processes and is overlapped at gain
Generating audio signal B after reason to send to analog switch 9, all of input audio signal is dropped by superposition gain process again for the third time
Being also sent to the analog switch 9 of the second audio effect processing chip 8 after making an uproar and reaching consistent gain amplification effect, analog switch 9 will
Receive audio signal A to be sent out by the control of single-chip microcomputer 3, the audio signal needed for analog switch 9 will select after audio signal B
Delivering to recoding unit 19 carry out recording or send broadcasting audio frequency and export to PC end sound equipment, recoding unit 19 is by analog switch 9
Control can accept audio signal A and audio signal B, corresponding mike external sound source recording and PC end source of sound and mike
The selection of external sound source synthesis two kinds of recording modes of recording.Audio frequency after audio treatment unit 2 carries out specially good effect Audio Processing
Output audio frequency can be maximized noise reduction and reach preferable gain by signal, builds the music specially good effect at KTV scene K song.
Gain circuitry 10 institute in a kind of embedded digital sound-effect processing equipment specific embodiment as of the present invention in Fig. 2
Show.In a specific embodiment, described first audio effect processing chip 7 includes gain circuitry 10, first adder 11 and audio
Process circuit 12, electrically connect with first adder 11 after described mike input 4 connection gain circuitry 10, described first adder
11 electrically connect with described sound effect processing circuit 12.Wherein, concrete gain circuitry 10 be specifically connected as operational amplifier positive supply
End connects supply voltage, negative power end ground connection；Supply voltage is connected to operation amplifier after being filtered by resistance R25 and electric capacity C83
Device positive power source terminal；Operational amplifier positive power source terminal is by connecting through electric capacity C201 filtering after resistance R154 and resistance R221 dividing potential drop again
Resistance R155 is connected with operational amplifier normal phase input end.The audio signal of described mike input 4 carries out one through electric capacity C3
By the normal phase input end of concatenation operation amplifier after resistance R163 and electric capacity C33 after the filtering of rank；Operational amplifier anti-phase input
Difference parallel resistance R19 and electric capacity C162 between end and signal output part, operation amplifier inverting input connects resistance R26 and electricity
Hold C4 form series connection voltage negative feedback circuit with being followed by, adjust mike described in each road by regulation resistance R19 and resistance R26
The gain size of input 4 realizes the first time gain of mike and weakens noise.The signal output part of operational amplifier connects institute
Stating sound effect processing circuit 12, audio signal connects the input of described first adder 11 after carrying out audio frequency special effect processing.
The first audio effect processing chip in embedded digital sound-effect processing equipment specific embodiment as a kind of in Fig. 3 present invention
Shown in partial circuit diagram, the circuit of concrete first adder 11 is connected as first via mike input 4 through gain for the first time
Connect with resistance R164 after noise reduction process and sound effect processing circuit 12, shunt capacitance C12 and resistance R29 between resistance R164；The
No. two mike inputs 4 are connected with resistance R193 after first time gain noise reduction process and sound effect processing circuit 12, resistance
Shunt capacitance C16 and resistance R127 between R193.It is connected with resistance R65 after resistance R164 and resistance R193 series connection, through electricity
Hold the inverting input connecting first adder 11 after C137 carries out second-order filter；The inverting input of first adder 11 and letter
Between number outfan, shunt capacitance C136 and resistance R28 constitutes voltage negative feedback circuit respectively.Circuit by regulation resistance R164,
The resistance of R193 and resistance R28 realizes the gain of the audio signal after mike superposes and amplifies, it is achieved the of mike input 4
Secondary gain amplifying and noise reducing processes.
In a specific embodiment, described second audio effect processing chip 8 includes second adder 13 and the 3rd adder
14, the outfan of described first audio effect processing chip 7 and except mike input 4 Wai Ge roads inputs respectively with described second addition
Device 13 input electrical connection, the outfan of described second adder 13 be electrically connected described analog switch 9 input and
The output of the first input end of the 3rd adder 14, the second input of described 3rd adder 14 and described PC end sound card 15
End electrical connection, the outfan of described 3rd adder 14 electrically connects with the input of described analog switch 9；Described analog switch 9
Outfan electrically connects with PC end sound card 15.The audio signal of described mike input 4 is through the place of the first audio effect processing chip 7
Audio signal A, sound is exported after being processed by second adder 13 together with musical instrument input 5 and other external sources of sound input 6 after reason
Frequently signal A is respectively sent to described analog switch 9 and the input of the 3rd adder 14；3rd adder 14 is by audio signal A
It is adjusted correspondingly gain after superposing with the audio signal generating left and right acoustic channels from PC end sound card 15 and noise reduction process is raw
Send after becoming audio signal B to described analog switch 9 unit, by the control of single-chip microcomputer 3, select the audio frequency in analog switch 9
Signal A and the output of audio signal B.
In a specific embodiment, described single-chip microcomputer 3 turns serial ports 16, reset unit 17 and encryption chip 18 respectively with U
Electrical connection.U turns serial ports 16 and is issued acquisition for realizing tuning parameter by the software of PC end；Reset unit 17 is used for monitoring MCU
Running voltage, when less than 2.63V, hardware system can self-resetting；Encryption chip 18 and the MCU bus phase by I2C
Even, for software being realized the protection of code.By the control of described single-chip microcomputer 3, it is configured with more function so that people select
Select utilization.
In a specific embodiment, also include that recoding unit 19, described recoding unit 19 are electrically connected with described analog switch 9
Connect, include the synthesis recording of mike external sound source and mike external sound source and the synthesis recording of PC end source of sound for offer.Institute
State analog switch 9 to receive mike and input 4 end source of sound synthetic audio signal A and mike inputs 4 end sources of sound and PC end source of sound
Two kinds of audio signals of audio signal B after synthesis, by the control of single-chip microcomputer 3, can realize analog switch 9 and optionally export sound
Frequently signal to described recoding unit 19 is recorded, and people can select two kinds of different recording effects to carry out according to the hobby of oneself
Collection.
In a specific embodiment, described mike input 4 includes two-way or the above interface of two-way.The wheat of multichannel is provided
Gram wind inputs 4 ports and can meet people and realize the to one's heart's content needs of many people K song antiphonal singing simultaneously, and the mike of multichannel inputs 4 points simultaneously
Do not connect a respective gain circuitry 10, be overlapped again after carrying out the first gain noise reduction process respectively carrying out second time gain
Noise reduction process, after gain noise reduction respectively, superposition again carries out gain noise reduction, the maximized weakening audio noise of energy, and incites somebody to action
Mike inputs 4 audio frequency and is amplified to preferable gain, even also can well avoid cross-talk in the case of many people K song simultaneously,
Noise superposition etc., it is ensured that good audio frequency effect.
In a specific embodiment, described embedded digital sound-effect processing equipment also includes that two or more are external
Earphone 20 interface.Directly audio signal can be transferred to by earphone 20 ear of people, carry out K song by wearing earphone 20
People is allowed to enjoy the stereo live performance effect around lower shock of Hi-Fi audio signal.
Present invention difference is huge with existing house K song device volume, acoustic gain is big not, input mode is single and record
Sound pattern is fixing etc. causes K at home to sing the best problem that can not sing heartily heartily of audio, the invention provides a kind of embedded digital
Sound-effect processing equipment, mainly includes audio input unit 1, recoding unit 19, audio treatment unit 2 and single-chip microcomputer 3；Audio frequency inputs
Unit 1 is electrically connected by audio treatment unit 2, and audio processing chip electrically connects with single-chip microcomputer 3 and recoding unit 19 respectively.Audio frequency
Input block 1 includes mike input 4, musical instrument input 5 and external source of sound input 6, sends to institute after being used for receiving audio signal
State audio treatment unit 2；Audio treatment unit 2 includes the first audio effect processing chip 7 and the second audio effect processing chip of electrical connection
8；First audio effect processing chip 7 after mike input 4 is carried out gain process superposition and after carrying out secondary gain with except wheat
Gram wind inputs 4 Wai Ge roads and inputs superposition again, generates audio signal A and send after audio effect processing to the second audio after superposition
Reason chip 8.The mike input 4 on each road carries out gain audio effect processing again in superposition after respective gain noise reduction process,
After the gain amplifier of twice processes, noise is weakened severely, and can reach preferable gain, by noise control at certain value
In, and all of input audio signal is overlapped Gain tuning after gain process to unanimously.Second audio effect processing chip 8
Including analog switch 9, for by PC end audio signal after sound card processes and described audio signal A synthetic audio signal B
Rear transmission is to analog switch 9；Analog switch 9 receives audio signal A and audio signal B and controls the audio signal of output；Monolithic
Machine 3 selects signal to send to described recoding unit for the signal transmission controlling output to sound equipment output and control analog switch 9
19 record.Recoding unit 19 provides mike external sound source synthesis recording mode and mike external sound source and PC end sound
Source synthesis recording mode two kinds, multiple input mode, it is provided that people more select, it is possible not only to many people and carries out K song simultaneously
Enjoy, it is also possible to connect the self-service accompaniments of musical instrument such as electric guitar, increase the enjoyment of K song.
The foregoing is only embodiments of the invention, not thereby limit the scope of the claims of the present invention, every utilize this
Equivalent structure or equivalence flow process that bright description and accompanying drawing content are made convert, or are directly or indirectly used in other relevant skills
Art field, is the most in like manner included in the scope of patent protection of the present invention.
Claims (7)
1. an embedded digital sound-effect processing equipment, it is characterised in that include audio input unit, audio treatment unit and list
Sheet machine；Described audio input unit electrically connects with audio treatment unit, and described audio treatment unit electrically connects with described single-chip microcomputer；
Described audio input unit includes mike input, musical instrument input and the input of external source of sound, after being used for receiving audio signal
Send to described audio treatment unit；
Described audio treatment unit includes the first audio effect processing chip and the second audio effect processing chip of electrical connection；
The superposition carry out secondary gain after the input of described mike is carried out gain process of described first audio effect processing chip
Again superpose and gain with except mike input Wai Ge road inputs afterwards, generate audio signal A after superposition and send out after audio effect processing
Deliver to described second audio effect processing chip；
Described second audio effect processing chip includes analog switch, for by PC end through sound card process after audio signal with described
It is selected to move towards through described analog switch after audio signal A synthetic audio signal B；
Described single-chip microcomputer electrically connects with described analog switch, is used for controlling audio signal and sends to sound equipment output and control described mould
Intend switch and select the output of audio signal A and audio signal B.
A kind of embedded digital sound-effect processing equipment the most according to claim 1, it is characterised in that at described first audio
Reason chip includes gain circuitry, first adder and sound effect processing circuit, and the input of described mike connects after gain circuitry with the
One adder electrical connection, described first adder electrically connects with described sound effect processing circuit.
A kind of embedded digital sound-effect processing equipment the most according to claim 1, it is characterised in that at described second audio
Reason chip also includes second adder and the 3rd adder, the outfan of described first audio effect processing chip and except mike inputs
Duan Waige road input input with described second adder respectively electrically connect, and the outfan of described second adder is the most electric
Connect input and the first input end of the 3rd adder of described analog switch, the second input of described 3rd adder with
The outfan electrical connection of described PC end sound card, the described outfan of the 3rd adder is electrically connected with the input of described analog switch
Connect；Described analoging switch output end electrically connects with PC end sound card.
A kind of embedded digital sound-effect processing equipment the most according to claim 1, it is characterised in that described single-chip microcomputer is respectively
Turn serial ports, reset unit and encryption chip to electrically connect with U.
A kind of embedded digital sound-effect processing equipment the most according to claim 1, it is characterised in that also include that recording is single
Unit, described recoding unit electrically connects with described analog switch, includes the synthesis recording of mike external sound source and Mike for offer
Wind external sound source and the synthesis recording of PC end source of sound.
A kind of embedded digital sound-effect processing equipment the most according to claim 1, it is characterised in that described mike inputs
Including the above interface of two-way.
A kind of embedded digital sound-effect processing equipment the most according to claim 1, it is characterised in that also include more than two-way
Peripheral earphone interface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410041230.2A CN103744335B (en) | 2014-01-28 | 2014-01-28 | A kind of embedded digital sound-effect processing equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410041230.2A CN103744335B (en) | 2014-01-28 | 2014-01-28 | A kind of embedded digital sound-effect processing equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103744335A CN103744335A (en) | 2014-04-23 |
| CN103744335B true CN103744335B (en) | 2016-08-17 |
Family
ID=50501364
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410041230.2A Active CN103744335B (en) | 2014-01-28 | 2014-01-28 | A kind of embedded digital sound-effect processing equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103744335B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105100985B (en) * | 2014-05-07 | 2019-01-18 | 钰太芯微电子科技（上海）有限公司 | Multiple microphones share the Headphone device of same emulation bus |
| CN104602174A (en) * | 2015-01-09 | 2015-05-06 | 易程（苏州）智能系统有限公司 | Four-path audio output system based on eight-bit single chip microcomputer |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101197128A (en) * | 2007-12-29 | 2008-06-11 | 沈侃 | Portable singing system with monitoring function |
| JP4853354B2 (en) * | 2007-03-30 | 2012-01-11 | ブラザー工業株式会社 | Karaoke equipment |
| JP2012063726A (en) * | 2010-09-17 | 2012-03-29 | Toshiba Corp | Sound quality correction apparatus and speech correction method |
| CN202816388U (en) * | 2012-08-17 | 2013-03-20 | 深圳市益威科电子有限公司 | Karaoke recording and playing audio equipment |
| CN203181165U (en) * | 2013-04-15 | 2013-09-04 | 北京昆腾微电子有限公司 | Wireless microphone and household karaoke system |
| CN203193861U (en) * | 2013-04-15 | 2013-09-11 | 深圳市益威科电子有限公司 | Wireless mobile terminal karaoke reverberation converter |
| CN203313386U (en) * | 2013-05-09 | 2013-11-27 | 北京昆腾微电子有限公司 | Wireless audio processing equipment, wireless audio player, household karaoke system |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20100111332A1 (en) * | 2008-10-31 | 2010-05-06 | Wai Chi Ting | Microphone set for AV system |
-
2014
- 2014-01-28 CN CN201410041230.2A patent/CN103744335B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4853354B2 (en) * | 2007-03-30 | 2012-01-11 | ブラザー工業株式会社 | Karaoke equipment |
| CN101197128A (en) * | 2007-12-29 | 2008-06-11 | 沈侃 | Portable singing system with monitoring function |
| JP2012063726A (en) * | 2010-09-17 | 2012-03-29 | Toshiba Corp | Sound quality correction apparatus and speech correction method |
| CN202816388U (en) * | 2012-08-17 | 2013-03-20 | 深圳市益威科电子有限公司 | Karaoke recording and playing audio equipment |
| CN203181165U (en) * | 2013-04-15 | 2013-09-04 | 北京昆腾微电子有限公司 | Wireless microphone and household karaoke system |
| CN203193861U (en) * | 2013-04-15 | 2013-09-11 | 深圳市益威科电子有限公司 | Wireless mobile terminal karaoke reverberation converter |
| CN203313386U (en) * | 2013-05-09 | 2013-11-27 | 北京昆腾微电子有限公司 | Wireless audio processing equipment, wireless audio player, household karaoke system |
Non-Patent Citations (1)
| Title |
|---|
| 基于TMS320VC5402的数字音效处理系统;胡东 等;《计算机与数字工程》;20051231;第33卷(第10期);第111-114页 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103744335A (en) | 2014-04-23 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US20210375245A1 (en) | Integrated karaoke device | |
| US10299023B2 (en) | Multifunctional wireless music microphone | |
| CN101609667B (en) | Method for realizing karaoke function in PMP player | |
| CN102820026A (en) | Replay apparatus, signal processing apparatus, and signal processing method | |
| CN205754740U (en) | Mike | |
| CN1151077A (en) | Method for reproducing audio signals and apparatus therefor | |
| CN102547523A (en) | Volume adjusting method and device | |
| CN105245991A (en) | Head-mounted karaoke singing earphone and karaoke singing processing method | |
| CN104486698A (en) | Wireless singing microphone system for mobile phone | |
| Bartlett et al. | Recording Music on Location: Capturing the Live Performance | |
| CN102568512A (en) | Method and device of volume control | |
| CN103744335B (en) | A kind of embedded digital sound-effect processing equipment | |
| CN206302530U (en) | A kind of wireless microphone system | |
| CN108200516A (en) | A kind of microphone speaker all-in-one machine | |
| CN102571011A (en) | Method and device for adjusting sound volume | |
| CN206759671U (en) | A kind of microphone | |
| CN205862785U (en) | Effect device | |
| CN205017540U (en) | Wear -type K sings earphone | |
| CN203689074U (en) | Embedded digital sound effect processing device | |
| CN205666933U (en) | Headphone | |
| CN207968874U (en) | A kind of microphone speaker all-in-one machine | |
| CN202218386U (en) | Recording circuit capable of imitating recording studio functions | |
| CN205265900U (en) | Multi -functional audio system | |
| CN204681574U (en) | A kind of high-fidelity wifi sound equipment | |
| US10085103B2 (en) | Music enhancing device for sound systems |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of invention: Embedded digital sound processing device Effective date of registration: 20170116 Granted publication date: 20160817 Pledgee: China Co truction Bank Corp Fuzhou Jiangcheng branch Pledgor: Fujian Haimei Digital Technology Co., Ltd. Registration number: 2017350000012 |
|
| PLDC | Enforcement, change and cancellation of contracts on pledge of patent right or utility model |