CN1489148A - Portable (recordable) karaoke apparatus - Google Patents
Portable (recordable) karaoke apparatus Download PDFInfo
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- CN1489148A CN1489148A CNA021373744A CN02137374A CN1489148A CN 1489148 A CN1489148 A CN 1489148A CN A021373744 A CNA021373744 A CN A021373744A CN 02137374 A CN02137374 A CN 02137374A CN 1489148 A CN1489148 A CN 1489148A
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Abstract
The invention relates to Karaoke device, particular to device integrating the functions of storing, ordering, playing, singing and recording songs, and using Adaptive Differential Pulse Code Modulation (ADPCM algorithm) as well as MIDI format and special image processing method. Connecting to video and audio of TV set in any format system, user can enjoy Karaoke amusement at any moment and place at one's pleasure. The device possesses functional features of light and handy, large capacity, recordable and easy of operation.
Description
One, technical field:
The present invention relates to a kind of Caraok device, more specifically be meant and adopt auto-adaptive increment pulse code modulation (PCM) (ADPCM algorithm), improved with digital form coding music standard (MIDI) form and special image processing method, with the depositing of song, point, put, sing, record the Caraok device that becomes one, only is made up of the major and minor microphone of a cover, the user can be whenever and wherever possible as long as the looking of the televisor of main microphone and any standard, audio frequency just are connected, amusement is played Karaoka in enjoyment indiscriminately ad. as one wishes.Have lightly portable, memory capacity is big, functional characteristics such as can record, easy to operate.
Two, background technology:
Present karaoke, be divided into video display karaoke and audio tape karaoke basically, equipment is huger, for example video display karaoke, its equipment have colour TV, video recorder, reverberator, sound amplifier, left and right box and microphone, even colour TV itself possesses video input jack and audio input jack, need video recording and reverberator and microphone equally, such cover Caraok device can not be carried certainly.
And the audio tape karaoke needs cassette player, reverberator, audio amplifier too but does not have effect same.
Three, summary of the invention:
The key problem in technology that the present invention need solve only be with once the major and minor microphone of cover, user as long as with the looking of the televisor of main microphone and any standard, audio frequency is connected, can indiscriminately ad. as one wishes enjoy the Karaoke amusement.
In order to achieve the above object, the present invention adopts:
1, main microphone is made up of pick-up head (MIC), prime amplifier (AMP1), coding and decoding circuit (CODEC), output amplifier (AMP2), digital signal processor (DSP), memory (MEM), frequency modulation wireless receiver (REC), frequency modulation radio transmitters (TRS), video encoder (VEN) and master controller (MCU) and power module (PWR).
2, in song and recording processing, adopt the ADPCM algorithm, thereby saved memory space.
The sound-recording function of microphone: we sample to the voice signal of coming from microphone by coding decoder (Codec) with the sampling rate of 8K.Each sampling point is represented with the signed number of 16 bits.We compress it with the method for auto-adaptive increment pulse code modulation (PCM) (Adaptive Differential Pulse Code Modulation).Each sampling point of compression back only needs 4 bits to deposit.
Auto-adaptive increment pulse code modulation (PCM) (ADPCM) is a kind of increment modulation method of improved, compare with common delta modulation, the step-length of ADPCM (Step Size) can change speed with the number of it is believed that regulate automatically, thereby signal after the compression is compared with original signal less distortion is arranged.We also adopt the step-length of voice signal optimization are regulated algorithm, make the voice signal after the compression sound the distortion minimum.
Sample value after overcompression is left in it in non-volatile storage medium by DSP.When wanting playback, by DSP it is decompressed, 4 bit sample values after the compression are reduced into the linear sample value of 16 bits, deliver to coding decoder (CODEC) again, at last by the sound horn sound.
3, in accompaniment music is handled, adopt improved midi format, thereby saved memory space, accelerated arithmetic speed.
(1) organized formats of change file
The MIDI file is a kind of sequential file, and its record is unit with the piece.The form one of MIDI file has three kinds:
In the synthesizing MIDI music, we need down read together from the beginning of all track pieces, and up to the end of this piece, the structure of reading in of this file is unfavorable for the DSP operation.So we all change into the MIDI file of form 1 and form 2 the MIDI file of form 0.
(2) storage format of change file
Under the file system of PC, the record of MIDI file is a unit with word (8 bit).When using DSP to synthesize, the data processing of DSP is a unit with word (16 bit), so we also use word to be unit at store M IDI file.In order to adapt to new storage format, we have also done corresponding modification to the form of MIDI message, and it is the unit storage that all message is made into the word.
(3) storage format of change data
The storage format of data designs in order to adapt to MIDI musical instrument real-time Communication for Power in the MIDI file.We are in the synthetic process of DSP, such data layout only can cause the low of efficient, therefore in order to adapt to the variation of this use object, we have also made corresponding change to the form of data storage in the MIDI file: the unsigned number that the number of all special midi formats is changed into a word; All unsigned numbers through skew are changed into the signed number that does not have skew of a word.
(4) revise the benefit of being brought
Owing to the standard of MIDI is for the real-time Communication for Power between the MIDI musical instrument designs, and this standard continued to use in the record of MIDI file, so the form of MIDI file has very strong compatibility and extensibility.But complexity increases and the execution decrease in efficiency.Our improvement can make our synthetic become simple efficient, meets midi standard simultaneously.
4, adopted image processing algorithm in Karaoke in the Flame Image Process, thereby realized approximate animation effect and literal is combined with image.
Song information, image information and character information all are stored in the non-volatile storage medium.Be partially submerged into the image of a width of cloth static state from image information according to song information.This width of cloth image is carried out conversion, realize migration, amplification, turnover, window shutter, mosaic, be fade-in fade-out, animation effect such as upset, be about to still image and realize dynamic effect.Also include information such as the lyrics in the song information, from character library, call in corresponding character graphics according to this information, and each character all can obtain sweeping the speed of plucking.After image and character were synthetic, central processing unit was responsible for it is transformed into video output formats, delivers to video encoder, then output.
5, secondary microphone by pick-up head (MIC), prime amplifier (AMP), frequency modulation is wireless connects device (TRS) and master controller (MCU) and power supply nuclear piece (PWR) and form.
Four, description of drawings:
Fig. 1 is a main microphone structured flowchart of the present invention
Fig. 2 is the sound-recording function structured flowchart of microphone
Fig. 3 is the image and the character display structure block diagram of Microphone for karaoke
Fig. 4 is secondary microphone structured flowchart
Five, embodiment:
1,1 main microphone of the present invention is made up of pick-up head (MIC), prime amplifier (AMP1), coding and decoding circuit (CODEC), output amplifier (AMP2), digital signal processor (DSP), memory (MEM), frequency modulation wireless receiver (REC), frequency modulation radio transmitters (TRS), video encoder (VEN) and master controller (MCU) and power module (PWR) with reference to the accompanying drawings.
2, with reference to the accompanying drawings the sound-recording function of 2 microphones by acoustic pickup (MIC), coding decoder (CODEC) digital signal processor (DSP) and animation process (Flash) and wait and to form, we sample to the voice signal of coming from microphone by coding decoder (Codec) with the sampling rate of 8K.Each sampling point is represented with the signed number of 16 bits.We compress it with the method for auto-adaptive increment pulse code modulation (PCM) (Adaptive Differential PulseCode Modulation).Each sampling point of compression back only needs 4 bits to deposit.
Auto-adaptive increment pulse code modulation (PCM) (ADPCM) is a kind of increment modulation method of improved, compare with common delta modulation, the step-length of ADPCM (Step Size) can change speed with the number of it is believed that regulate automatically, thereby signal after the compression is compared with original signal less distortion is arranged.We also adopt the step-length of voice signal optimization are regulated algorithm, make the voice signal after the compression sound the distortion minimum.
Sample value after overcompression is left in it in non-volatile storage medium by DSP.When wanting playback, by DSP it is decompressed, 4 bit sample values after the compression are reduced into the linear sample value of 16 bits, deliver to coding decoder (CODEC) again, at last by the sound horn sound.
3, in accompaniment music is handled, adopt improved midi format, thereby saved memory space, accelerated arithmetic speed.
(1) organized formats of change file
The MIDI file is a kind of sequential file, and its record is unit with the piece.The form one of MIDI file has three kinds:
Form 1: comprise a header block and one or more track piece of playing simultaneously.Each track piece can comprise 16 tracks of playing simultaneously at the most.
In the synthesizing MIDI music, we need down read together from the beginning of all track pieces, and up to the end of this piece, the structure of reading in of this file is unfavorable for the DSP operation.So we all change into the MIDI file of form 1 and form 2 the MIDI file of form 0.
(2) storage format of change file
Under the file system of PC, the record of MIDI file is a unit with word (8 bit).When using DSP to synthesize, the data processing of DSP is a unit with word (16 bit), so we also use word to be unit at store M IDI file.In order to adapt to new storage format, we have also done corresponding modification to the form of MIDI message, and it is the unit storage that all message is made into the word.
(3) storage format of change data
The storage format of data designs in order to adapt to MIDI musical instrument real-time Communication for Power in the MIDI file.We are in the synthetic process of DSP, such data layout only can cause the low of efficient, therefore in order to adapt to the variation of this use object, we have also made corresponding change to the form of data storage in the MIDI file: the unsigned number that the number of all special midi formats is changed into a word; All unsigned numbers through skew are changed into the signed number that does not have skew of a word.
(4) revise the benefit of being brought
Owing to the standard of MIDI is for the real-time Communication for Power between the MIDI musical instrument designs, and this standard continued to use in the record of MIDI file, so the form of MIDI file has very strong compatibility and extensibility.But complexity increases and the execution decrease in efficiency.Our improvement can make our synthetic become simple efficient, meets midi standard simultaneously.
3, with reference to the accompanying drawings 3: in the Karaoke Flame Image Process, adopted image processing algorithm, thereby realized approximate animation effect and literal is combined with image.Song information, image information and character information all are stored in the non-volatile storage medium.Be partially submerged into the image of a width of cloth static state from image information according to song information.This width of cloth image is carried out conversion, realize migration, amplification, turnover, window shutter, mosaic, be fade-in fade-out, animation effect such as upset, be about to still image and realize dynamic effect.Also include information such as the lyrics in the song information, from character library, call in corresponding character graphics according to this information, and each character all can obtain sweeping the speed of plucking.After image and character were synthetic, central processing unit was responsible for it is transformed into video output formats, delivers to video encoder, then output.
4, with reference to the accompanying drawings 4: secondary microphone by pick-up head (MIC), prime amplifier (AMP), frequency modulation is wireless connects device (TRS) and master controller (MCU) and power supply nuclear piece (PWR) and form.
This shows, the intact reason of complete machine work is that the singer passes through master controller (MCU), can finish selected songs and select mode of operation.MCU sends corresponding instruction according to singer's instruction to DSP.DSP takes out the accompaniment music of midi format from MEM, send CODEC to amplify back output after synthetic, and DSP takes out image again and sings literal from MEM simultaneously, send VEN after the processing, the output of coding back.
When the singer began to sing, song was imported through MIC, by AMP1 and CODEC, was handled by DSP, together sent CODEC and amplified back output with accompaniment music again behind the adding Echo.
When being operated in recording state, import DSP through CODEC, behind the ADPCM algorithm, compress and be stored among the MEM from the sound of MIC input.Then from MEM, take out data during playback, amplify back output through ADPCM after the decompression.
The sound signal of all outputs all can be passed through the TRS module, carries out wireless transmission with mode of frequency regulation.
Secondary microphone singer's instruction is passed through the TRS module in the lump by MCU processing back and song, sends with mode of frequency regulation.This signal carries out respective handling by main microphone after being received by main microphone.
All electronic circuits of complete machine all adopt integrated circuit, are installed in corresponding main microphone, the secondary microphone.The user can be whenever and wherever possible as long as the looking of the televisor of main microphone and any standard, audio frequency just are connected, amusement is played Karaoka in enjoyment indiscriminately ad. as one wishes.Have lightly portable, memory capacity is big, functional characteristics such as can record, easy to operate.
Claims (6)
1, a kind of portable (can record) formula Caraok device, comprise main microphone, secondary microphone etc., it is characterized in that: main microphone is made up of pick-up head (MIC), prime amplifier (AMP1), coding and decoding circuit (CODEC), output amplifier (AMP2), digital signal processor (DSP), memory (MEM), frequency modulation wireless receiver (REC), frequency modulation radio transmitters (TRS), video encoder (VEN) and master controller (MCU) and power module (PWR).The singer can finish selected songs and select mode of operation by master controller (MCU).MCU sends corresponding instruction according to singer's instruction to DSP.DSP takes out the accompaniment music of midi format from MEM, send CODEC to amplify back output after synthetic, and DSP takes out image again and sings literal from MEM simultaneously, send VEN after the processing, the output of coding back.
When the singer began to sing, song was imported through MIC, by AMP1 and CODEC, was handled by DSP, together sent CODEC and amplified back output with accompaniment music again behind the adding Echo.
When being operated in recording state, import DSP through CODEC, behind the ADPCM algorithm, compress and be stored among the MEM from the sound of MIC input.Then from MEM, take out data during playback, amplify back output through ADPCM after the decompression.
The sound signal of all outputs all can be passed through the TRS module, carries out wireless transmission with mode of frequency regulation.
Secondary microphone singer's instruction is passed through the TRS module in the lump by MCU processing back and song, sends with mode of frequency regulation.This signal carries out respective handling by main microphone after being received by main microphone.
2, a kind of portable karaoke device according to claim 1 is characterized in that song and recording processing employing ADPCM algorithm.
3, a kind of portable karaoke device according to claim 1 is characterized in that accompaniment music adopts improved midi format in handling.
4, a kind of portable karaoke device according to claim 1, the Flame Image Process that it is characterized in that playing Karaoka adopts image processing algorithm, and song song information, image information and character information all are stored in the non-volatile storage medium.Be partially submerged into the image of a width of cloth static state from image information according to song information.This width of cloth image is carried out conversion, realize migration, amplification, turnover, window shutter, mosaic, be fade-in fade-out, animation effect such as upset, be about to still image and realize dynamic effect.Also include information such as the lyrics in the song information, from character library, call in corresponding character graphics according to this information, and each character all can obtain sweeping the speed of plucking.After image and character were synthetic, central processing unit was responsible for it is transformed into video output formats, delivers to video encoder, then output.
5, a kind of portable karaoke device according to claim 1 is characterized in that all electronic circuits all adopt integrated circuit.
6, a kind of portable karaoke device according to claim 1 is characterized in that integrated circuit is contained in the corresponding major and minor microphone.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02137374 CN1231916C (en) | 2002-10-10 | 2002-10-10 | Portable (recordable) karaoke apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02137374 CN1231916C (en) | 2002-10-10 | 2002-10-10 | Portable (recordable) karaoke apparatus |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1489148A true CN1489148A (en) | 2004-04-14 |
| CN1231916C CN1231916C (en) | 2005-12-14 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 02137374 Expired - Fee Related CN1231916C (en) | 2002-10-10 | 2002-10-10 | Portable (recordable) karaoke apparatus |
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| Country | Link |
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| CN (1) | CN1231916C (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101803226A (en) * | 2007-09-18 | 2010-08-11 | 拉昂科技有限公司 | Digital multimedia short distance wireless transmission system and wireless transmission method using the same |
| CN101902552A (en) * | 2009-06-01 | 2010-12-01 | 海尔集团公司 | Signal source and television with same |
| CN102064832A (en) * | 2010-11-11 | 2011-05-18 | 广东欧珀移动通信有限公司 | Implementation method for changing vibration effect with music |
| CN101197128B (en) * | 2007-12-29 | 2011-10-19 | 沈侃 | Portable singing system with monitoring function |
| CN101217032B (en) * | 2007-12-29 | 2011-10-19 | 沈侃 | A mobile portable type singing system |
| CN108206035A (en) * | 2016-12-20 | 2018-06-26 | 通号通信信息集团上海有限公司 | A kind of embedded recording and playing device and method for carrying out channel selecting |
-
2002
- 2002-10-10 CN CN 02137374 patent/CN1231916C/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101803226A (en) * | 2007-09-18 | 2010-08-11 | 拉昂科技有限公司 | Digital multimedia short distance wireless transmission system and wireless transmission method using the same |
| CN101803226B (en) * | 2007-09-18 | 2013-09-04 | 拉昂科技有限公司 | Digital multimedia short distance wireless transmission system and wireless transmission method using the same |
| US8611330B2 (en) | 2007-09-18 | 2013-12-17 | Laon Technology Co., Ltd. | Digital multimedia local area wireless transmission system and local area wireless transmission method using the same |
| CN101197128B (en) * | 2007-12-29 | 2011-10-19 | 沈侃 | Portable singing system with monitoring function |
| CN101217032B (en) * | 2007-12-29 | 2011-10-19 | 沈侃 | A mobile portable type singing system |
| CN101902552A (en) * | 2009-06-01 | 2010-12-01 | 海尔集团公司 | Signal source and television with same |
| CN102064832A (en) * | 2010-11-11 | 2011-05-18 | 广东欧珀移动通信有限公司 | Implementation method for changing vibration effect with music |
| CN102064832B (en) * | 2010-11-11 | 2013-09-18 | 广东欧珀移动通信有限公司 | Implementation method for changing vibration effect with music |
| CN108206035A (en) * | 2016-12-20 | 2018-06-26 | 通号通信信息集团上海有限公司 | A kind of embedded recording and playing device and method for carrying out channel selecting |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1231916C (en) | 2005-12-14 |
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