CN202871289U - Portable karaoke device based on MP3 format - Google Patents
Portable karaoke device based on MP3 format Download PDFInfo
- Publication number
- CN202871289U CN202871289U CN 201220455381 CN201220455381U CN202871289U CN 202871289 U CN202871289 U CN 202871289U CN 201220455381 CN201220455381 CN 201220455381 CN 201220455381 U CN201220455381 U CN 201220455381U CN 202871289 U CN202871289 U CN 202871289U
- Authority
- CN
- China
- Prior art keywords
- unit
- processing unit
- karaoke
- central processing
- accompaniment
- 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
Images
Landscapes
- Reverberation, Karaoke And Other Acoustics (AREA)
Abstract
The utility model discloses a portable karaoke device based on a MP3 format. The portable karaoke device is characterized by comprising a MP3 coding and decoding module, a central processor, a memory cell, a karaoke processing module, a display unit and a loudspeaker. The karaoke processing module comprises an input unit, a noise reduction circuit, a accompaniment output control unit, an original independent output and left-and-right channel control unit, a first pre-amplification unit, a squeal inhibition unit, a tone quality processing unit, a reverberation time-delay unit, an remix mixing modified tone processing unit, a second pre-amplification unit, and a power amplification unit. Beneficial effects of the karaoke device are that through adding the karaoke processing module on a conventional MP3 decoding device, the device can perform sound processing same as karaoke in professional KTVs. The device is easy to operate, power consumption is low, and tone quality is good.
Description
[technical field]
The utility model relates to Caraok device, relates in particular to a kind of portable karaoke device based on MP3 format.
[background technology]
Karaoke is a kind of accompanying system, there is not real band's accompaniment during singing, only has audio-visual accompaniment, the musical background while of normally pre-recording in broadcast and being stored on the medium at video tape and so on, not having leading singer's voice, on TV screen, play synchronously the lyrics that the beat prompting is arranged, then seeing that by the participant limit lyrics limit holds microphone and sing.The singer can participate in singing under the musical background of prerecording, Karaoke can make singer's sound obtain beautifying and retouching by acoustic processing, when organically combining with musical background again, just become the stereo song of one integrated mass, this accompaniment mode brings great convenience with joyful to singing fans.
At present Karaoke mainly contains following several frequently seen mode:
One) be to utilize computer to play Karaoka, its volume is large, and is irremovable;
Two) be to utilize VCD, DVD plays Karaoka, and its volume and power consumption all are problems, and Portable belt, program source difficulty are not looked for entirely;
Three) be to utilize special karaoke equipment to be combined into the Karaoke home theater, its volume is large, power consumption Portable belt not, and portioned product is removable or drag, but can not be hung on loins or hand-held independent operation;
Four) be that the panel computer that utilizes the player of single-chip microcomputer+audio/video decoding such as mobile phone, non-X86, MP4 player etc. are played Karaoka, its complicated operation, cost are high, unprofessional.
We know, in stereophony recording building-up process, the leading singer of song tends to be arranged in by the recording engineer centre position of acoustic image, that is to say that left and right acoustic channels has identical signal.If left and right acoustic channels is separated, anti-phase and another sound channel stack with one of them sound channel, then same section will balance out, and different piece is kept.The ultimate principle of Here it is " disappearing " song.
But in fact, we can find that iff doing like this result who obtains is very unpleasant to hear, main cause is when recording is synthetic, bass generally is that pendulum is in the centre position, that is to say that signal left and right acoustic channels as the bass of bass and so on is also being, like this in the process that inversely adds, the sound of bass also had been eliminated almost when song was eliminated, there is not bass, how does this music also listen? so general solution is the low frequency part that intercepted first music before inversely adding by a low-pass filter, mix with the result after the stack again, make final result be unlikely to seriously to lack bass.Owing to the Frequency spectrum ratio that voice is shared is wider, the result who does like this can make the low frequency part of voice be kept, thereby can't disappear song fully.
The another one reason of song of can't fully disappearing is that song generally all is added with digital reverberation, this reverberation is to irregular irreflexive result of sound in the imitation music hall, so the signal of left and right acoustic channels is not the same, therefore can't eliminate by the mode that inversely adds
Patent of the present invention is a kind of product simplification to the 4th kind of mode, and the 4th kind of mode much is complicated operation at present, and function is not single, and is imperfect.Such as there not being special microphone reverberation treatment circuit, there is not the former vocal accompaniment commutation circuit of joining in the chorus of specialty, the file that is mostly directly MP4 to be played Karaoka is play-overed function.And captions also cannot edit, and cut song also inconvenient.More without the sort of imposing manner of KTV and effect.Although market also has some making portable karaok machine based on MP3MP4, they are exactly a MP3MP4 player purely, have only changed individual name and have added microphone and amplify and reverberation circuit.But really use, all exist the time that oneself will sing often not eliminate the original singer, put the program result who only has sound accompaniment and can not emit the original singer again.What have is beating the portable karaok product, but also only be one with the microphone of reverberation, the actual multimedia player that buys or will use computer or IPHONE4 etc. and so on forms Karaoke. also there are the defectives such as the program source file is large, form is various, difficulty is looked in said apparatus.
To sum up, various Caraok devices are multifarious, but the professional effect of accomplishing to play Karaoka fully not only makes things convenient for product to carry but also with low cost, and portable karaok machine is freely switched in lyrics demonstration, pure original singer, pure accompaniment at any time, and are at present domestic or very few.
[utility model content]
The purpose of this utility model is effectively to overcome the deficiency of above-mentioned technology, provide a kind of easy to carry, volume is little, the portable karaoke device based on MP3 format of high tone quality.
The technical solution of the utility model is achieved in that a kind of portable karaoke device based on MP3 format, and it is characterized in that: it comprises
One MP3 coding/decoding module is used for audio frequency and the video of various forms are carried out Code And Decode;
One central processing unit, described MP3 coding/decoding module is connected with described central processing unit;
One storage unit is connected with described central processing unit, is used for storing audio and video file;
One Karaoke processing module comprises
Input block has the MP3 source of sound input interface that is connected with described central processing unit, MIC microphone input interface and outside line input interface;
Muffling circuit, described MP3 source of sound input interface is connected with described muffling circuit input end;
The accompaniment output control unit is connected with described muffling circuit output terminal;
The original singer independently exports and the left and right acoustic channels control module, is connected with described MP3 source of sound input interface;
The first pre-amplifier unit is connected with described MIC microphone input interface;
The inhibition unit of uttering long and high-pitched sounds is connected with described the first pre-amplifier unit;
The tone color processing unit is connected with the described inhibition unit of uttering long and high-pitched sounds;
The reverberation delay unit is connected with described tone color processing unit;
Audio mixing mixing modified tone processing unit is with described reverberation delay unit, accompaniment output control unit and the original singer independently exports and the left and right acoustic channels control module is connected;
One second pre-amplifier unit is connected with described audio mixing mixing modified tone processing unit;
One power amplification unit; Be connected with described the second pre-amplifier unit;
One loudspeaker is connected with described power amplification unit;
One display unit, described display unit is connected with described central processing unit;
Wherein, described central processing unit reads the audio-video document that the original singer separates with accompaniment by described storage unit, and input to the MP3 codec unit, described audio-video document decoded play original singer or accompaniment, microphone input interface input singing sound tone signal, by the Karaoke processing module through preposition amplification, the inhibition of uttering long and high-pitched sounds, tone color is processed, the reverberation time-delay, after original singer or accompaniment merge in audio mixing mixing modified tone processing unit processes, obtain one and sing sound and the synthetic music of accompaniment, then input to the second pre-amplifier unit, finally by exporting to loudspeaker behind the power amplification unit amplifying signal, simultaneously, signal after the audio mixing mixing modified tone processing unit processes feeds back to the outside line input interface and carries out the interior Karaoke program that the individual sings of recording into.
The below further sets forth technique scheme:
Described muffling circuit comprises left and right acoustic channels balancing unit, matrix circuit unit, low-pass filter amplifying unit and the output unit that simulates stereo, wherein, the input end of described left and right acoustic channels balancing unit is connected with described MP3 source of sound input interface, output terminal is connected with described matrix circuit unit and low-pass filter amplifying unit, described low-pass filter amplifying unit output terminal is connected with described matrix circuit unit, and the output terminal of matrix circuit unit is connected with described accompaniment output control unit.
Also comprise a matrix keyboard, described matrix keyboard is connected with described central processing unit.
Also comprise a USB flash disk interface, described USB flash disk interface is connected with described central processing unit.
Also comprise a radio reception module, described radio reception module is connected with described central processing unit.
Be connected with circuit input interface and/or MIC output interface on the described central processing unit.
Described central processing unit also is connected with a T card interface.
The beneficial effects of the utility model are: the utility model mainly adds the Karaoke processing module by the MP3 decoding device in routine, can realize to the Karaoke audio-video document carry out that the preposition amplification of microphone, tonequality are processed, reverberation time-delay, MP3 source of sound are processed, the original singer accompanies hardware noise reduction processing, audio mixing tuning modifieds tone, preposition amplification, power amplification output, color screen show output etc., finish the audio processing that is equal to professional KTV Karaoke.It is simple to operate, power attenuation is low, tonequality is good, for China portable karaok market provides a cover total solution, astogeny along with consumer groups, people more pay attention to the elderly's recreation and body-building and amusement, sooner or later outdoor singing of people, practice and wave the huge consumer field of can yet be regarded as, having sung in recent years song also no longer is star's patent, and it is also higher that common young man practices the cost of singing at KTV, not only consuming time, also will consume other people time, this kind meets the characteristics that young man's love is listened to the music and liked the K song based on the portable karaoke device of MP3 format very much, not only guaranteed tonequality but also reduced consumer cost.
[description of drawings]
Fig. 1 is theory diagram of the present utility model;
Fig. 2 is the theory diagram of Karaoke processing module in the utility model;
Fig. 3 is that audio-video document obtains pure original singer or pure accompaniment signal work principle schematic by Karaoke processing module inside
Fig. 4 is noise reduction schematic diagram in the utility model;
Fig. 5 is audio mixing schematic diagram in the utility model;
Among the figure: central processing unit 1; MP3 coding/decoding module 2; Storage unit 3; Display unit 4; Karaoke processing module 5; Input block 51; Muffling circuit 52; Left and right acoustic channels balancing unit 521; Matrix circuit unit 522; Output unit 523 simulates stereo; Low-pass filter amplifying unit 524; Loudspeaker 6; Radio reception module 7; USB flash disk interface 8; T card interface 9; Matrix keyboard 10; Recording microphone input interface 11; Circuit input interface 12; Singing microphone input interface 13; Accompaniment output control unit 53; The original singer independently exports and left and right acoustic channels control module 54; The first pre-amplifier unit 55; Utter long and high-pitched sounds and suppress unit 56; Tone color processing unit 57; Reverberation delay unit 58; Audio mixing mixing modified tone processing unit 59; The second pre-amplifier unit 14; Power amplification unit 15; Differential amplifier 62; Totalizer A63; Low-pass filter 64; Totalizer B65.
[embodiment]
The utility model will be further described below in conjunction with drawings and Examples.
The mini Karaoke of called portable that a lot of producers adopt on the market, only just having increased microphone amplifies and the voice reverberation, can not carry out real-time synchronization to the former accompaniment of joining in the chorus switches, if program source has the original singer, their basic elimination not the original singer, such Karaoke is false, and their the sort of machine have to go for that program source accompaniment that nobody sings combines could sing karaoke.
With reference to shown in Figure 1, the utility model has disclosed a kind of portable karaoke device based on MP3 format, mainly adds the hardware circuit of Karaoke by the MP3 decoding device of routine, finishes the audio that is equal to professional KTV Karaoke and processes.This Caraok device mainly comprises MP3 coding/decoding module 2, central processing unit 1(CPU), storage unit 3, the Karaoke processing module 5, the second pre-amplifier unit 14 and power amplification unit 15, display unit 4 and loudspeaker 6; Wherein
MP3 coding/decoding module 2 is connected with described central processing unit 1, be used for the files such as MP3, WMA, DRM WMA, APE, OGG, AAC, CDA, CAT, DRM CAT, WAV, FLAC, AC3, AIFF, AMR, M4A, G711 ~ G.729, RA, MOV, MIDI are carried out Code And Decode, the output of realization from the digital music to the analog music, and the people when singing from analog sampling record digitally coded storage and transmission; This MP3 coding/decoding module 2 can also carry out live recording or carry out inside recording function by circuit input interface 12 by the Karaoke that the recording microphone input interface 11 among Fig. 1 is sung consumer oneself, finally can store to play and appreciate, can also contrast synchronous broadcast with the original singer; Central processing unit 1 its software of mainly being responsible for the inner Karaoke of this device audio is processed, for selection, broadcast, program search, F.F., rewind down, a upper song, next song, the original singer of song accompany software noise reduction processing, reverberation time-delay, Subtitle Demonstration, the functions such as Image Display, video output realize control; Described storage unit 3 is connected with described central processing unit 1, is used for storing audio and video file, and central processing unit 1 can read various audio frequency and video file from storage unit 3.
With reference to shown in Figure 2, Karaoke processing module 5, to utilize the song technology that disappears to become the hardware karaoke circuit with principle design, mix again that the preposition amplification of microphone, tonequality are processed, reverberation time-delay, MP3 source of sound are processed, the original singer accompanies hardware noise reduction processing, audio mixing tuning modifieds tone, preposition amplification, power amplification output, color screen show the functional modules such as output, finish the audio processing that professional KTV plays Karaoka.It comprises input block 51, muffling circuit 52, accompaniment output control unit 53, the original singer independently exports and left and right acoustic channels control module 54, the first pre-amplifier unit 55, utter long and high-pitched sounds inhibition unit 56, tone color processing unit 57, reverberation delay unit 58, audio mixing mixing modified tone processing unit 59; Wherein, input block 51 has the MP3 source of sound input interface that is connected with described central processing unit 1, microphone input interface 11 and outside line input interface 12, MP3 source of sound input interface is connected with described muffling circuit 52 input ends, described accompaniment output control unit 53 is connected with described muffling circuit 52 output terminals, described original singer independently exports and left and right acoustic channels control module 54 is connected with described MP3 source of sound input interface, described the first pre-amplifier unit 55 is connected with described microphone input interface 11, utter long and high-pitched sounds and suppress unit 56 and be connected with described the first pre-amplifier unit 55, tone color processing unit 57 is connected with the described inhibition unit 56 of uttering long and high-pitched sounds, reverberation delay unit 58 is connected with described tone color processing unit 57, audio mixing mixing modified tone processing unit 59 and described reverberation delay unit 58, accompaniment the output control unit 53 and original singer independently exports and left and right acoustic channels control module 54 connections, the second pre-amplifier unit 14 is connected with described audio mixing mixing modified tone processing unit 59, power amplification unit 15 is connected with described the second pre-amplifier unit 14, loudspeaker 6 is connected with described power amplification unit 15, and display unit 4 is connected with central processing unit 1.
Central processing unit 1 reads the Karaoke audio-video document that the original singer separates with accompaniment by described storage unit 3, and inputs to the MP3 codec unit, described audio-video document is decoded play original singer or accompaniment.
With reference to shown in Figure 3, Fig. 3 is that audio-video document obtains pure original singer or pure accompaniment signal work principle schematic by Karaoke processing module 5 inside, no matter inner program source data or outside signal are inputted the MP3 coding/decoding module into CPU inside, final programmed control output first via background image and captions through CPU, when program source does not comprise picture and the lyrics, default Karaoke background picture, the lyrics in the automatic search memory of CPU meeting also can connect to computer at the internet Auto-matching lyrics and picture.
The second tunnel left and right acoustic channels is the synchronous former accompaniment of joining in the chorus of CPU inner decoding output, the accompaniment that control module I/O interface 1-2 by CPU can independently control the Karaoke program source is at left A, or right B sends into subordinate to carry out signal synthetic thereby obtain pure accompaniment or pure original signal.
Third Road is to obtain the voice accompaniment not have the separative synchronously former accompaniment of joining in the chorus in program source, parses pure accompaniment signal by Fig. 4 noise reduction unit hardware, simulates stereophonic signal C, D; Sending into subordinate, to carry out signal synthetic, and the original singer will be listened in the sing karaoke time in this road, needs the I/O interface 1-2 of CPU control module to connect the left A of program source signal, right B.
The four the tunnel is to send into after singer's microphone signal E processes through Fig. 4 tonequality to carry out the preposition amplification of audio mixing in the sound signal compositor, rear class power amplifier output E, and F promotes loudspeaker 6.
H is the singer's of mixing Karaoke signal, feeds back to CPU inside and can carry out encoded audio record.
Thereby each tone channel signal of above Kara OK function module obtains pure original singer, the pure accompaniment that the consumer wants through consumer's the different connection of real-time selection freely at output terminal, waits and mixes singing-hall Karaoke effect.
Or with reference to Fig. 2, microphone input interface 13 input singing sound tone signal, delay time through preposition amplification, the inhibition of uttering long and high-pitched sounds, tone color processing, reverberation by Karaoke processing module 5, after original singer or accompaniment merge in 59 processing of audio mixing mixing modified tone processing unit, obtain one and sing sound and the synthetic music of accompaniment, then input to the second pre-amplifier unit 14, finally by exporting to loudspeaker 6 behind power amplification unit 15 amplifying signals.
Muffling circuit 52 is how the second tunnel of Fig. 3 is processed the stereophonic program source of having mixed voice and the accompaniment song that disappears, filtering original singer person's sound, obtaining pure accompaniment further specifies, this muffling circuit 52 comprises left and right acoustic channels balancing unit 521, matrix circuit unit 522, low-pass filter amplifying unit 524 and the output unit 523 that simulates stereo, wherein, the input end of described left and right acoustic channels balancing unit 521 is connected with described MP3 source of sound input interface, output terminal is connected with described matrix circuit unit 522 and low-pass filter amplifying unit 524, described low-pass filter amplifying unit 524 output terminals are connected with described matrix circuit unit 522, and the output terminal of matrix circuit unit 522 is connected with described accompaniment output control unit 53.The audio-video document (not being the Karaoke audio-video document) that this muffling circuit 52 is used for standard on the market carries out the noise reduction processing, and the Karaoke audio-video document carries out noise reduction by central processing unit 1 to be processed.
With reference to Fig. 4 and shown in Figure 5, Fig. 4 is this device noise reduction principle, be used for the audio file of standard on the market is carried out the noise reduction processing, the routine song know-why that disappears is exactly that the song of original singer in the program source is eliminated, and keeps audio signal output. in the video disc by being formed by singing voice signals and sound accompaniment. the frequency of singing voice signals generally is confined in mid and the middle pitch segment scope.The frequency ratio of audio signal is abundanter, divide high, in, low frequency. song generally is positioned in the middle of 2 keynote sound fields, so require to be recorded in evenly simultaneously a left side, on right two sound channels, that is to say on a left side, the voltage on the R channel is substantially equal, and frequency also equates with phase place. for audio signal, because various musical instruments have separately different performance positions. thereby be recorded in a left side, be asymmetric on the R channel.Generally speaking, high, certain kind musical instrument of middle frequency response or all be positioned at the left side, or on the right of all being positioned at. therefore on a left side, on the R channel to record voltage differences very large. and the leading musical instrument of low frequency is (such as jazz drum, bass guitar etc.) be positioned at middle section, therefore the same with song on a left side, on the R channel to record voltage substantially equal.
Work as a left side, right signal makes the singing voice signals in the signal by differential amplifier 62, and the low frequency signal in the audio signal is removed by low-pass filter 64.Stay sound accompaniment in, high-frequency signal A is on a left side, right signal obtains the signal of L+R by totalizer B65, by low-pass filter 64 make signal in, the filtered device of radio-frequency component filters rear output B, A, B obtain a complete audio signal through totalizer B65.This sound accompaniment is owing to being that hardware is to the processing of general programs, so to some sound field complexity, it is very clean that the sound of reverberation of voice still can not be processed.Some backgrounds even noise is arranged.
Fig. 5 is this device reverberation principle, is used for the audio file of standard on the market is carried out reverberation, and this circuit is generally generally adopted, and all the echo processing IC with a specialty substitutes, and no longer sets forth at this.
Further, this device also comprises matrix keyboard 10, USB flash disk interface 8, radio reception module 7 and T card interface 9 etc., described matrix keyboard 10, USB flash disk interface 8, radio reception module 7 and T card interface 9 are connected with described central processing unit 1, are connected with circuit input interface 12 and/or recording microphone input interface 11 on the described central processing unit 1.
In sum, the utility model mainly adds the Karaoke treatment circuit by the MP3 decoding device in routine, can realize to the Karaoke audio-video document carry out that the preposition amplification of microphone, tonequality are processed, reverberation time-delay, MP3 source of sound are processed, the original singer accompanies hardware noise reduction processing, audio mixing tuning modifieds tone, preposition amplification, power amplification output, color screen show output etc., finish the audio processing that is equal to professional KTV Karaoke.It is simple to operate, power attenuation is low, tonequality is good, for China portable karaok market provides a cover total solution, astogeny along with consumer groups, people more pay attention to the elderly's recreation and body-building and amusement, sooner or later outdoor singing of people, practice and wave the huge consumer field of can yet be regarded as, sung in recent years song also not in the patent that is the star, it is also higher that common young man practices the cost of singing at KTV, not only consuming time, also will consume other people time, this kind meets the characteristics that young man's love is listened to the music and liked the K song based on the portable karaoke device of MP3 format very much, not only guaranteed tonequality but also reduced consumer cost.
Although illustrate and described this applicable new patent with reference to specific preferred embodiment, but those skilled in the art should understand that, the specific embodiments of enumerating in this instructions or embodiment, only in order to understand technology contents of the present invention, in the case of without departing from the spirit and scope of the present invention, the present invention can carry out multiple change in the form and details.For example increase marquee effect, the various frequency spectrum lighting effects of flashing with music.Application is such as lying fallow from outdoor travel; knapsack; waist is hung; trouser pocket; sole; hand-held, the helmet, 3D glasses, infant, blue or green juvenile child use the portable palm recreational terminals such as MP3 karaoke player that the mutation of this circuit connecting relation formation protects based on this patent, MP4, player, sound amplifier, loudspeaker, mobile phone and belong to this patent protection domain at amusement, the old man's leisure the inside, place such as dance of practising singing of practising singing.
Described above only is preferred embodiment of the present utility model, and above-mentioned specific embodiment is not to restriction of the present utility model.In technological thought category of the present utility model, various distortion and modification can appear, and the retouching that all those of ordinary skill in the art make according to above description, revise or be equal to replacement, all belong to the scope that the utility model is protected.
Claims (7)
1. portable karaoke device based on MP3 format, it is characterized in that: it comprises
One MP3 coding/decoding module is used for audio frequency and the video of various forms are carried out Code And Decode;
One central processing unit, described MP3 coding/decoding module is connected with described central processing unit;
At least one storage unit is connected with described central processing unit, is used for storing audio and video file;
One Karaoke processing module comprises
Input block has the MP3 source of sound input interface that is connected with described central processing unit, MIC microphone input interface and outside line input interface;
Muffling circuit, described MP3 source of sound input interface is connected with described muffling circuit input end;
The accompaniment output control unit is connected with described muffling circuit output terminal;
The original singer independently exports and the left and right acoustic channels control module, is connected with described MP3 source of sound input interface;
The first pre-amplifier unit is connected with described MIC microphone input interface;
The inhibition unit of uttering long and high-pitched sounds is connected with described the first pre-amplifier unit;
The tone color processing unit is connected with the described inhibition unit of uttering long and high-pitched sounds;
The reverberation delay unit is connected with described tone color processing unit;
Audio mixing mixing modified tone processing unit is with described reverberation delay unit, accompaniment output control unit and the original singer independently exports and the left and right acoustic channels control module is connected;
One second pre-amplifier unit is connected with described audio mixing mixing modified tone processing unit;
One power amplification unit; Be connected with described the second pre-amplifier unit;
One loudspeaker is connected with described power amplification unit;
One display unit, described display unit is connected with described central processing unit;
Wherein, described central processing unit reads the Karaoke audio-video document that the original singer separates with accompaniment by described storage unit, and input to the MP3 codec unit, described audio-video document decoded play original singer or accompaniment, microphone input interface input singing sound tone signal, by the Karaoke processing module through preposition amplification, the inhibition of uttering long and high-pitched sounds, tone color is processed, the reverberation time-delay, after original singer or accompaniment merge in audio mixing mixing modified tone processing unit processes, obtain one and sing sound and the synthetic music of accompaniment, then input to the second pre-amplifier unit, finally by exporting to loudspeaker behind the power amplification unit amplifying signal, simultaneously, signal after the audio mixing mixing modified tone processing unit processes feeds back to the circuit input and carries out the interior Karaoke program that the individual sings of recording into.
2. a kind of portable karaoke device based on MP3 format according to claim 1, it is characterized in that: described muffling circuit comprises the left and right acoustic channels balancing unit, the matrix circuit unit, low-pass filter amplifying unit and the output unit that simulates stereo, wherein, the input end of described left and right acoustic channels balancing unit is connected with described MP3 source of sound input interface, output terminal is connected with described matrix circuit unit and low-pass filter amplifying unit, described low-pass filter amplifying unit output terminal is connected with described matrix circuit unit, and the output terminal of matrix circuit unit is connected with described accompaniment output control unit.
3. a kind of portable karaoke device based on MP3 format according to claim 1, it is characterized in that: also comprise a matrix keyboard, described matrix keyboard is connected with described central processing unit.
4. a kind of portable karaoke device based on MP3 format according to claim 1, it is characterized in that: also comprise a USB flash disk interface, described USB flash disk interface is connected with described central processing unit.
5. a kind of portable karaoke device based on MP3 format according to claim 1, it is characterized in that: also comprise a radio reception module, described radio reception module is connected with described central processing unit.
6. a kind of portable karaoke device based on MP3 format according to claim 1 is characterized in that: be connected with circuit input interface and/or MIC output interface on the described central processing unit.
7. a kind of portable karaoke device based on MP3 format according to claim 1, it is characterized in that: described central processing unit also is connected with a T card interface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220455381 CN202871289U (en) | 2012-09-07 | 2012-09-07 | Portable karaoke device based on MP3 format |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220455381 CN202871289U (en) | 2012-09-07 | 2012-09-07 | Portable karaoke device based on MP3 format |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202871289U true CN202871289U (en) | 2013-04-10 |
Family
ID=48037986
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220455381 Expired - Fee Related CN202871289U (en) | 2012-09-07 | 2012-09-07 | Portable karaoke device based on MP3 format |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202871289U (en) |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103475979A (en) * | 2013-09-16 | 2013-12-25 | 无敌科技(西安)有限公司 | Vocal accompaniment system reducing playback audio delay and method for reducing playback audio delay |
| CN103531191A (en) * | 2013-09-30 | 2014-01-22 | 乐视致新电子科技（天津）有限公司 | Sound processing method and device |
| CN103794200A (en) * | 2014-01-27 | 2014-05-14 | 福建海媚数码科技有限公司 | Portable karaoke device capable of achieving audio access based on WIFI |
| CN104157292A (en) * | 2014-08-20 | 2014-11-19 | 杭州华为数字技术有限公司 | Anti-howling audio signal processing method and device thereof |
| CN104269174A (en) * | 2014-10-24 | 2015-01-07 | 百度在线网络技术（北京）有限公司 | Treatment method and device for audio signals |
| CN105654971A (en) * | 2014-11-11 | 2016-06-08 | 腾讯科技（深圳）有限公司 | Singing assistance method and device in process of song recording |
| CN106412672A (en) * | 2015-07-29 | 2017-02-15 | 王泰来 | Two-channel audio playing method and playing apparatus using same |
| CN107274919A (en) * | 2016-04-08 | 2017-10-20 | 王泰来 | Use the mixed high-fidelity dual-audio playing device and its player method for putting device of high-fidelity |
| CN108389568A (en) * | 2018-05-07 | 2018-08-10 | 深圳乐华高科实业有限公司 | A kind of karaoke OK system and its application method of the automatic voice that disappears |
| CN108922506A (en) * | 2018-06-29 | 2018-11-30 | 广州酷狗计算机科技有限公司 | Song audio generation method, device and computer readable storage medium |
-
2012
- 2012-09-07 CN CN 201220455381 patent/CN202871289U/en not_active Expired - Fee Related
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103475979A (en) * | 2013-09-16 | 2013-12-25 | 无敌科技(西安)有限公司 | Vocal accompaniment system reducing playback audio delay and method for reducing playback audio delay |
| CN103531191A (en) * | 2013-09-30 | 2014-01-22 | 乐视致新电子科技（天津）有限公司 | Sound processing method and device |
| CN103794200A (en) * | 2014-01-27 | 2014-05-14 | 福建海媚数码科技有限公司 | Portable karaoke device capable of achieving audio access based on WIFI |
| CN104157292B (en) * | 2014-08-20 | 2017-08-25 | 杭州华为数字技术有限公司 | Anti- utter long and high-pitched sounds acoustic signal processing method and device |
| CN104157292A (en) * | 2014-08-20 | 2014-11-19 | 杭州华为数字技术有限公司 | Anti-howling audio signal processing method and device thereof |
| CN104269174B (en) * | 2014-10-24 | 2018-02-09 | 北京音之邦文化科技有限公司 | A kind of processing method and processing device of audio signal |
| CN104269174A (en) * | 2014-10-24 | 2015-01-07 | 百度在线网络技术（北京）有限公司 | Treatment method and device for audio signals |
| CN105654971A (en) * | 2014-11-11 | 2016-06-08 | 腾讯科技（深圳）有限公司 | Singing assistance method and device in process of song recording |
| CN105654971B (en) * | 2014-11-11 | 2019-12-10 | 广州酷狗计算机科技有限公司 | Singing assisting method and equipment in song recording process |
| CN106412672A (en) * | 2015-07-29 | 2017-02-15 | 王泰来 | Two-channel audio playing method and playing apparatus using same |
| CN107274919A (en) * | 2016-04-08 | 2017-10-20 | 王泰来 | Use the mixed high-fidelity dual-audio playing device and its player method for putting device of high-fidelity |
| CN108389568A (en) * | 2018-05-07 | 2018-08-10 | 深圳乐华高科实业有限公司 | A kind of karaoke OK system and its application method of the automatic voice that disappears |
| CN108389568B (en) * | 2018-05-07 | 2023-11-10 | 深圳乐华高科实业有限公司 | Karaoke system capable of automatically eliminating voice |
| CN108922506A (en) * | 2018-06-29 | 2018-11-30 | 广州酷狗计算机科技有限公司 | Song audio generation method, device and computer readable storage medium |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN202871289U (en) | Portable karaoke device based on MP3 format | |
| CN101609667B (en) | Method for realizing karaoke function in PMP player | |
| d'Escrivan | Music technology | |
| CN105245991A (en) | Head-mounted karaoke singing earphone and karaoke singing processing method | |
| US20120308014A1 (en) | Audio playback device and method | |
| White | Creative Recording Part One: Effects And Processors | |
| CN105989824A (en) | Karaoke system of mobile device and mobile device | |
| US20100089223A1 (en) | Microphone set providing audio and text data | |
| WO2011087460A1 (en) | A method and a device for generating at least one audio file, and a method and a device for playing at least one audio file | |
| JP2000099050A (en) | Karaoke device selectively reproducing and outputting plural vocal parts | |
| JP5486941B2 (en) | A karaoke device that makes you feel like singing to the audience | |
| Miller | Mixing music | |
| Coryat | Guerrilla home recording: how to get great sound from any studio (no matter how weird or cheap your gear is) | |
| Bhalani et al. | Karaoke Machine implementation and validation using Out of Phase Stereo method | |
| CN200986815Y (en) | Footplate type MP3 player | |
| CN205105373U (en) | Multi -functional WIFI intelligence stereo set | |
| CN201378076Y (en) | Player | |
| JP6474292B2 (en) | Karaoke equipment | |
| CN1086335A (en) | The tool guiding function sing device | |
| CN201936594U (en) | Karaoke effector for universal serial bus (USB) computer | |
| JP2011154290A (en) | Karaoke machine for supporting singing of music partially including solitary duet | |
| WO2019051689A1 (en) | Sound control method and apparatus for intelligent terminal | |
| WO2009002195A2 (en) | Integrated television karaoke device | |
| Dang | Exploring the value of binaural audio format for contemporary pop music | |
| Earl | Home Music Production: A Complete Guide to Setting Up Your Home Recording Studio to Make Professional Sounding Music at Home: Getting Started |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130410 Termination date: 20140907 |
|
| EXPY | Termination of patent right or utility model |