CN1031905C - Karaoke system and method of controlling the same - Google Patents
Karaoke system and method of controlling the same Download PDFInfo
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- CN1031905C CN1031905C CN 93114974 CN93114974A CN1031905C CN 1031905 C CN1031905 C CN 1031905C CN 93114974 CN93114974 CN 93114974 CN 93114974 A CN93114974 A CN 93114974A CN 1031905 C CN1031905 C CN 1031905C
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Abstract
To provide a KARAOKE (orchestration without lyrics) system capable of accurately calculating points by sampling microphone sound and accompaniment sound outputted from a tape and calculating the point by a percentage based on the sampling value without performing calculation proportionally to the input time of the microphone sound at the time of calculating the point of sinning. This system is composed of amplifier means 13 and 14 for respectively amplifying sound inputted from the tape 11 and the microphone 12 of a remote controller serving also as the microphone, integration means 15 and 16 for respectively integrating the amplified sound from the amplifier means 13 and 14, comparator means 17 and 18 for comparing signals outputted from the integration means 15 and 16 with a reference voltage, a control means 10 for comparing the signals inputted from the comparator means 17 and 18 and the integration means 15 and 16, calculating the point and automatically selecting and outputting an L/R/ST mode corresponding to the presence/absence of the microphone sound at the time of the input of an automatic vocal input key in the case that the tape sound and the microphone sound are inputted and a song is sung and a point display means 20 for displaying the calculated point from the control means 10.
Description
The invention belongs to Karaoke (Karaoke) systems technology field.Specifically, karaoke OK system that the present invention released and control method thereof can be by respectively to sampling obtains the sampling clock umber of pulse, recently accurately calculates song composition (song score) with what the percentage form calculated resulting sampling clock umber of pulse from the audio signal of acoustic pickup and tape, can be used as singer's score, and have a telepilot on the acoustic pickup, can also select a pattern in the pattern of a left side/right side/stereo (below be designated as L/R/ST) as the sound output mode automatically.
Fig. 1 shows the block scheme of song composition counting circuit in a kind of traditional karaoke OK system.As seen from the figure, this song composition counting circuit comprises: amplification is from the amplifier 3 of the audio signal of acoustic pickup 1, amplification is from the amplifier 4 of the audio signal of tape 2, one to respectively from the output signal of amplifier 3 and 4 carry out with computing with door 5, and the output signal of the output signal of basis and door 5 and amplifier 3 produces the gate generator 6 of time clock.The output signal that the number of the time clock of gate generator 6 output is proportional to amplifier 3 is added to the time on the gate generator 6.
Song composition counting circuit also comprises: the clock pulse counter 7 that the time clock of gate generator 6 outputs is counted, reading with clock pulse counter 7 output converts the time to again with the time summitor 8 of this time and current time addition, one according to time of time summitor 8 output with calculate the counter 9 of song composition, and the song composition display unit 10 of the song composition that calculates of display calculator 9.
The working condition that below explanation is had the song composition counting circuit of said structure.
At first, be added to after amplifying by amplifier 3 from the audio signal of acoustic pickup 1 on the input end with door 5.Be added to after then amplifying from audio frequency (accompaniment) signal of tape 2 on another input end with door 5 by amplifier 4.
Only just there is output signal to be added on the gate generator 6 when the output signal that is added with simultaneously on its two input ends respectively from amplifier 3 and 4 outputs with door 5.
In a single day gate generator 6 receives with door 5 the output signal and the output signal of amplifier 3 and just produces time clock, so the number of the time clock that produces of gate generator 6 output signal that is proportional to amplifier 3 is added to the time on the gate generator 6.For example, when the output signal of amplifier 3 was added to gate generator clock 6 last one second, gate generator 6 produced 100 time clock.
The time clock that 7 pairs of gate generators of clock pulse counter 6 produce is counted.Time totalizer 8 converts the reading of clock counter 7 to the time, and with this time and original time addition.At this moment, time summitor 8 add just swing is once when surpassing certain predetermined value time.
For example, the accompaniment that time summitor 8 has been pressed tape 2 after 99 times along with the reading of continuous input clock pulse counter 7 finishes, and the song composition that calculates of counter 9 is 99 so.Like this, song composition display unit 10 shown song compositions are 99.
Yet the moment that counter 9 is swung 100 times at time summitor 8 resets to O.Therefore, if the accompaniment that time summitor 8 has been put tape 2 after 120 times along with the reading of continuous input clock counter 7 finishes, the song composition that calculated of counter 9 will be 20 so.As a result, to demonstrate the song composition be 20 to song composition display unit 10.
In addition, in general high-fidelity video cassette recorder (VCR), a switch may be housed, be used for putting a pattern selecting when resembling in the L/R/ST pattern as the sound output mode.This high-fidelity VCR in adjunction can be used as karaoke OK system behind the acoustic pickup.In this case, on normally used OK a karaoke club karaoke tape, the record of L magnetic track has accompaniment music, and the record of R magnetic track has singer's song and accompaniment music.Fig. 2 shows the form of OK a karaoke club karaoke tape commonly used.
Like this, when selecting the L pattern with L/R/ST sound output mode selector switch, the output accompaniment music, and when selecting the R pattern, export singer's song and accompaniment music.In addition, if select the ST pattern, then export singer's song and accompaniment music (L+R).
Yet, above-mentioned traditional karaoke OK system has a shortcoming, if the accompaniment time of a song long (for example 3 minutes and 40 seconds) or short, so this system just can not accurately calculate the song composition, because it is to become honest by the output time with the acoustic pickup audio signal to calculate.That is to say that for the situation of the song that has the short accompaniment time, because the input time of acoustic pickup audio signal is short, so the song composition is low.And for the situation of the song that has the long accompaniment time, when the time clock generator even crossed predeterminedly when also continuing to produce time clock during this period of time, song composition counter resets to 0, all calculates again again.
A shortcoming of above-mentioned traditional karaoke OK system is an inconvenient operation, select one to want song and the some other function sung because the user must operate each button that is installed on the system chassis, just use acoustic pickup in his hand (have restrict into wireless) to sing him subsequently and want the song sung.In addition, under the situation of housed device (as sound system) as karaoke OK system with the band acoustic pickup, the user must lead to individual one independently telepilot come control system, very inconvenient.Another shortcoming of bringing in this case is because acoustic pickup and telepilot use separately respectively, therefore perhaps can lose.
Above-mentioned traditional karaoke OK system also has a shortcoming, and the user must operate L/R/ST sound output mode selector switch and select a required mode to sing him again to want the song sung, and this is also very inconvenient.Another shortcoming of Chu Xianing is in this case, when the user sing forget some lyrics that will sing midway the time have only accompaniment sound, thereby can not obtain sufficient enjoyment.
Consider existing above problem, proposed of the present invention.An object of the present invention is to provide a kind of number that obtains corresponding sampling clock pulse by the audio signal of acoustic pickup and tape output is sampled respectively and calculate the karaoke OK system of the song of the accurate Calculation recently composition input time of acoustic pickup acoustical signal (rather than according to) of resulting sampling clock umber of pulse again with the percentage form.
Another object of the present invention provides a kind of karaoke OK system of being furnished with the pickup function on the telepilot of the housed device with an acoustic pickup, thereby this telepilot just can be restricted or wireless acoustic pickup as having of this karaoke OK system.
The 3rd purpose of the present invention provides a kind of method of control card karaoke system, can automatically select a pattern in the L/R/ST pattern as the sound output mode when the automatic sound pattern has been selected in use.
Comprise according to karaoke OK system provided by the present invention:
Multiplying arrangement is used for the audio signal of tape output is amplified respectively with the audio signal that the acoustic pickup on the telepilot of being with acoustic pickup is exported;
Integrating gear is used for two audio signals through amplification of described multiplying arrangement output are carried out integration respectively, first and second integrated signals that therefore output obtain;
Comparison means is used for first and second integrated signals of described integrating gear output being compared first and second comparison signals that therefore output obtain respectively with a reference voltage;
Control device, the first integral signal that is used for responding described integrating gear output compares first and second comparison signals of described comparison means output mutually, calculate the song composition according to comparative result, in a single day described control device receives that when the user sings automatic performance key signals just selects a pattern in a left side/right side/three-dimensional pattern as the sound output mode according to the audio signal whether acoustic pickup output arranged automatically; And
Song composition display device is used for showing the song composition (score) that described control device calculates.
Therefore, in this system, also can accurately calculate the song composition even song has the short or long accompaniment time, and can also automatically select output mode.
Have the method for selecting to sing the karaoke OK system of mode capabilities automatically according to control provided by the present invention and comprise following each step:
Check acoustic pickup whether to connect and what select is the pattern of singing automatically;
If acoustic pickup is not connected or do not selected automatic performance pattern, then carry out existing sound output mode (pattern in a left side/right side/stereo mode);
Check whether the user is not singing, if automatic performance pattern is connected or selected to acoustic pickup, then when the user sings, export accompaniment music, and the singer of output stereo mode sings and accompaniment music when the user has stopped singing one period schedule time in sound pattern.
By will clearer understanding being arranged to above or some other purpose of the present invention, feature and advantage below in conjunction with the detailed description of accompanying drawing.In these accompanying drawings:
Fig. 1 is the block scheme of the song composition counting circuit of traditional karaoke OK system;
Fig. 2 shows the form of Karaoke tape commonly used;
Fig. 3 is the block scheme of the song composition counting circuit of karaoke OK system of the present invention;
Fig. 4 is the more detailed block diagram of the telepilot of band acoustic pickup of the present invention;
Fig. 5 is the block scheme of the automatic performance control circuit of karaoke OK system of the present invention;
Fig. 6 is the process flow diagram of explanation key services process of the present invention; And
Fig. 7 A and 7B are the process flow diagram of explanation automatic performance Control work process of the present invention.
Referring to Fig. 3, there is shown the block scheme of the song composition counting circuit of karaoke OK system of the present invention.As seen from the figure, this song composition counting circuit comprises: amplification is from the amplifier 13 of the audio signal of tape 11, amplification carries the amplifier 14 of the audio signal of the acoustic pickup 12 on the telepilot of acoustic pickup, integrator 15 with the output signal integration of amplifier 13, integrator 16, one an output signal and reference voltage V with integrator 15 with the output signal integration of amplifier 14
RefComparer 17 relatively, and a signal and a reference voltage V with integrator 16
RefComparer 18 relatively.
If the output signal of integrator 15 is lower than reference voltage V
Ref, low level signal of comparer 17 outputs, otherwise, a high level signal then exported.Equally, if the output signal of integrator 16 is lower than reference voltage V
Ref, low level signal of comparer 18 outputs, otherwise, a high level signal then exported.
In song composition counting circuit, disposed a microprocessor 19,19 pairs of this microprocessors are sampled from the signal of comparer 17 and 18 outputs respectively, obtain the number of sampling clock pulse, resulting sampling clock umber of pulse is stored into respectively in its respective memory (not shown), the output signal of response integrator 15 compares the sampling clock umber of pulse of being stored mutually, thereby calculates the song composition according to comparative result.
In song composition counting circuit, also dispose a song composition display unit 20, be used for showing the song composition that microprocessor 19 is calculated.
Fig. 4 shows the more detailed block diagram of the telepilot of band acoustic pickup of the present invention.As seen from the figure, the telepilot of this band acoustic pickup comprises: one will be amplified the microphone signal amplifier 12a of prearranged multiple from the audio signal of acoustic pickup 12, delayer 12b with the output delay certain hour of microphone signal amplifier 12a, an oscillator 12c who produces the essential reference frequency of this system, one with the reference frequency of the oscillator 12c frequency divider 12d with certain frequency dividing ratio frequency division, and a timing generator 12e who produces timing signal according to the output signal of frequency divider 12d.
The telepilot of band acoustic pickup also comprises: one has one group and selects keyboard 12f with the button of carrying out a required function by the user, a key demoder 12g who keyboard 12f is gone up the signal that therefore the output signal decoding back output of a user-selected key obtain, one is carried out control operation carrying out the controller 12h that goes up the corresponding required function of selecteed key with keyboard 12f, and one is handled the multiplier 12i of back to two treated signals of microprocessor 19 outputs to two output signals of delayer 12b and key demoder 12g under the control of controller 12h.
Fig. 5 shows the block scheme of the automatic performance control circuit of karaoke OK system of the present invention.Whether microprocessor 19 exists control signal of audio signal output of acoustic pickup output in the time of singing according to the user, automatically select a pattern in the L/R/ST pattern as the sound output mode.
This automatic performance control circuit comprises: a control signal according to microprocessor 19 outputs is selected the mode selection switch 21 of a pattern in the L/R/ST pattern, an output and high-fidelity integrated circuit 22 under the control of microprocessor 19 by the selected corresponding sound of pattern of mode selection switch 21, and user is used for selecting the automatic performance key 23 of the pattern of singing automatically.
Automatically singing key can be a reversible pull switch.In addition, singing key automatically can receive on the microprocessor 19 or be installed on the keyboard 12f.
Working condition with karaoke OK system of the present invention of said structure will be described in detail below.
At first, in song composition counting circuit, amplify the back by integrator 15 integrations by amplifier 13 from the audio signal (accompaniment tone) of tape 11.Equally, the audio signal that carries the acoustic pickup 12 on the telepilot of acoustic pickup is amplified the back by integrator 16 integrations by amplifier 14.
Integrator 15 and 16 output signal are added to respectively on comparer 17 and 18.Comparer 17 and 18 with the output signal of integrator 15 and 16 respectively with reference voltage V
RefCompare, if the output signal of integrator 15 is lower than reference voltage V
Ref, comparer 17 output low level signals, otherwise, the output high level signal.Similar, if the output signal of integrator 16 is lower than reference voltage V
Ref, comparer 18 output low level signals, otherwise, the output high level signal.
In microprocessor 19, two sampling unit (not shown) are sampled to the output signal of comparer 17 and 18 respectively, obtain the number of sampling clock pulse.Resulting sampling clock umber of pulse is stored in the storer respectively.Then, in case there is one period schedule time (3 seconds of time) not have the output signal of integrator 15 to be added on the microprocessor 19, then the sampling clock umber of pulse just sends a counter (not shown) to from corresponding memory respectively.This counter calculates the song composition by with the percentage form sampling clock umber of pulse being carried out computing.That is to say, counter with 100 divided by with the corresponding sampling clock umber of pulse of tape accompaniment music, will obtain again on duty with the corresponding sampling clock umber of pulse of acoustic pickup audio signal, thereby obtain the song composition.
The song composition that counter in the microprocessor 19 is calculated is shown by song composition display unit 20.
Therefore, by acoustic pickup audio signal and tape accompaniment audio frequency signal sampling are obtained the sampling clock umber of pulse, calculate the ratio of resulting sampling clock umber of pulse again with the percentage form, thereby accurately calculate the song composition.
On the other hand, in the audio signal processing procedure of the telepilot of being with acoustic pickup, after being amplified to the level that is fit to system handles from the audio signal of acoustic pickup 12 by microphone signal amplifier 12a, postponed according to the reference frequency of oscillator 12c output by delayer 12b.Multiplier 12i handles the output signal of delayer 12b under the control of controller 12b, makes it suitable have rope or wireless transmission, then treated signal is defeated by microprocessor 19.The output signal of multiplier 12i is sent to microprocessor 19 by the amplifier 14 in the song composition counting circuit, integrator 16 and comparer 18.
In addition, in the key signals processing procedure, promptly in the straighforward operation of the telepilot of being with acoustic pickup, frequency divider 12d carries out frequency division with required frequency dividing ratio to the reference frequency of oscillator 12c output, will be added to the timing generator 12e that produces timing signal through the frequency of frequency division.
When the user has pushed a corresponding key on the keyboard 12f in order to select required function, the key signals of corresponding generation is added on the multiplier 12i after key demoder 12g decoding.The output signal to key demoder 12g of multiplier 12i under the control of controller 12h handled, and makes it suitable the spread of the rumours, then treated signal is defeated by microprocessor 19.
Therefore, in the telepilot of band acoustic pickup, acoustic pickup 12, keyboard 12f and some other device are integrated and connected, and each output signal of exporting from these devices has rope or wireless passage to send to microprocessor 19 (promptly sending to system's body) by multiplier 12i edge.
Fig. 6 shows the process flow diagram of explanation key service operations of the present invention.As shown in the figure, having only obsolete is just can carry out the service operations of automatic performance key under the situation that hi-fi tape and acoustic pickup are connected as shown in Figure 2.In addition, it is reversible singing the key service operations automatically.That is to say, when the user pushes automatic performance key 23 under current pattern is not the situation of the pattern of singing automatically, select automatic performance pattern.And when the user pushes automatic performance key 23 under current pattern is the situation of the pattern of singing automatically, then abandon singing automatically pattern.As a result, when pushing automatic performance key, the user just selects and abandons the pattern of singing automatically repeatedly.
Fig. 7 A and 7B show the process flow diagram of explanation automatic performance control operation of the present invention.As shown in the figure, singing automatically in the control operation, at first checking at step 1S whether mode selection switch 21 has been selected the L pattern, then whether current pattern is the pattern of singing automatically in check.If determine that current pattern is not the pattern of singing automatically, then export accompaniment sound in the L pattern at step 2S.On the contrary, be the pattern of singing automatically if determine current pattern, then check whether acoustic pickup on and user singing at step 3S.If 3S determines that acoustic pickup 12 ons and user are singing in the step, then flow process proceeds to step 2S, at L pattern output accompaniment sound.Under this condition,, then determine that at step 4S the user has forgotten the lyrics when the user stops having sung one section preset time when (time, 1 second).As a result, proceed to step 5S in this case, sing and accompaniment music ST pattern output singer.
Equally, check at step 6S whether mode selection switch 21 has been selected the R pattern.If selected the R pattern, then check whether acoustic pickup 12 ons at step 7S in step 6S deterministic model selector switch 21.If 7S determines acoustic pickup 12 ons in the step, then whether current pattern is the pattern of singing automatically in check.If determine that current pattern is not the pattern of singing automatically, then sing and accompaniment music R pattern output singer at step 8S.On the contrary, if determine that current pattern is the pattern of singing automatically, the step 9S that coexists checks whether the user is singing.If 9S determines that the user is singing in the step, then proceed to step 10S, at L pattern output accompaniment music.Under this condition, when the user stops having sung one period schedule time (for example, 1 second), just determine that the user has forgotten the lyrics.As a result, proceed to step 11S in this case, sing and accompaniment music ST pattern output singer.
On the other hand, check at step 12S whether mode selection switch 21 has been selected the ST pattern.If selected the ST pattern, then check whether acoustic pickup 12 ons in step 12S deterministic model selector switch 21.If determine acoustic pickup 12 ons, then whether current pattern is the pattern of singing automatically in check.If determine that current pattern is the pattern of singing automatically, then check at step 13s whether the user is singing.If 13S determines that the user is singing in the step, then proceed to step 14S, at L pattern output accompaniment music.Under this condition, when the user stops having sung one period schedule time (for example, 1 second), just determine that the user has forgotten the lyrics.As a result, proceeding to step 15S in this situation flow process sings and accompaniment music ST pattern output singer.On the other hand, pattern is not the pattern of singing automatically when acoustic pickup 12 is not connected or be existing, then proceeds to 15S, sings and accompaniment music ST pattern output singer.
Also have, do not select at mode selection switch 21 to that is to say under the situation of any one L/R/ST, under the situation of having selected a normal mode, then when the user when automatically the performance pattern is sung, mode selection switch 21 what states are all at L pattern output accompaniment music.Under this condition, when the user stops having sung one period schedule time (for example, 1 second), just sing and accompaniment music ST pattern output singer.
By above explanation as seen, according to the present invention,, the method that umber of pulse is calculated the ratio of resulting sampling clock umber of pulse with the percentage form again when the audio signal of acoustic pickup and tape accompaniment audio frequency signal sampling are obtained sampling also can accurately calculate the song composition even having the short or long accompaniment time at a first song.In addition, independently constitute an integral body on the chassis, so the user only needs select required function and sing with the telepilot of this band acoustic pickup,, also reduced the possibility of losing for the user provides convenience because remote control and acoustic pickup are installed in one.In addition, the user can sing along with accompaniment under automatic performance pattern and need not to take into account output mode selector switch.In this case, when the user had forgotten the lyrics, the singer sang and accompaniment music will be exported together.Therefore, operation sound output mode selector switch is very convenient often.And, by just can on this video tape recorder, adopting the present invention at acoustic pickup of installation on the high-fidelity video cassette recorder.Therefore, the user can enjoy the enjoyment of singing at home.
Though below preferred embodiments more of the present invention are described, this has only exemplary.Being familiar with the certain understanding of people of this technology can make various modifications, augment and substitute to this, yet does not depart from the protection domain of the present invention and the spirit of claims defined.
Claims (5)
1. karaoke OK system comprises:
Sound pick up equipment is used to pick up outside voice signal, and converts voice signal to electric signal;
Memory storage is used for storage accompaniment signal and singing voice signals;
Multiplying arrangement is used for receiving respectively from sound pick up equipment and memory storage with from the sound signal of sound pick up equipment;
Integrating gear is used for the corresponding audio signal difference integration through amplifying from described multiplying arrangement output, first and second integrated signals that therefore output obtain;
Comparison means is used for first and second integrated signals from described integrating gear output being compared first and second comparison signals that therefore output obtain respectively with a reference voltage;
Control device, being used for first integral signal to the output of described integrating gear responds mutually relatively from first and second comparison signals of described comparison means output, thereby calculate the song composition according to comparative result, described control device is in case receive automatic performance key signals according to having or not the acoustic pickup audio signal to select a pattern in a left side/right stereo mode as the sound output mode automatically when the user sings once first song; And
Song composition display device is used for showing the song composition that described control device calculates.
2. according to the karaoke OK system that is proposed in the claim 1, it is characterized in that also being combined with telepilot on the wherein said acoustic pickup, comprising:
A microphone signal amplifier is used for amplifying the audio signal that described acoustic pickup is exported with certain amplification quantity;
A delayer is used for described microphone signal amplifier output signal is postponed certain hour;
An oscillator is used for the required reference frequency of generation system;
A frequency divider is used for required frequency dividing ratio the reference frequency that described oscillator provides being carried out frequency division.
A timing generator is used for producing timing signal according to the output signal of described frequency divider;
Keyboard with one group of button, wherein each button all can be selected to push by the user, to carry out a corresponding desirable function;
A key demoder is used for selecting the output signal of the key push to decode to the user on described keyboard, and output is through the signal of decoding; And
A multiplier is used for handling described delayer and described key output signal of decoder under the control of described controller, and treated signal is defeated by described control device.
3. karaoke OK system according to claim 1 is characterized in that described song memory storage is a tape.
4. one of a control has the method for selecting to sing automatically the karaoke OK system of mode capabilities, it is characterized in that described method comprises following each step;
Check whether acoustic pickup on and selected automatic performance pattern;
If acoustic pickup is not connected or is not selected automatic performance pattern, then carry out original sound output mode, that is a kind of pattern in a left side/right stereo mode;
Check whether the user sings, if acoustic pickup on or selected automatic performance pattern, then when the user sings on a left side/right sound pattern output accompaniment music; And
If in the acoustic pickup on or selected that the user stops having sung one period schedule time under the condition of automatic performance pattern, then sing and accompaniment music stereo mode output singer.
5. as the method that proposed in claim 4, it is characterized in that: wherein said that section schedule time was 1 second.
Applications Claiming Priority (8)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR23126/92 | 1992-11-23 | ||
| KR22995/1992 | 1992-12-01 | ||
| KR22995/92 | 1992-12-01 | ||
| KR23127/1992 | 1992-12-02 | ||
| KR1019920023127A KR950005097B1 (en) | 1992-12-02 | 1992-12-02 | Auto control method of vocal |
| KR1019920027118A KR950006299B1 (en) | 1992-12-02 | 1992-12-02 | Tape drive device for vcr |
| KR23126/1992 | 1992-12-02 | ||
| KR23127/92 | 1992-12-02 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1091579A CN1091579A (en) | 1994-08-31 |
| CN1031905C true CN1031905C (en) | 1996-05-29 |
Family
ID=26629399
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 93114974 Expired - Fee Related CN1031905C (en) | 1992-11-23 | 1993-11-23 | Karaoke system and method of controlling the same |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1031905C (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR0124612B1 (en) * | 1994-09-22 | 1997-11-28 | 구자홍 | Processing apparatus and method for caption and accompaniment music in karaoke system |
| JP2003255967A (en) * | 2002-02-27 | 2003-09-10 | Daiichikosho Co Ltd | Karaoke device peripheral system comprising a plurality of karaoke remote controllers and their activation rack, and karaoke remote controller |
| CN104637488B (en) * | 2013-11-07 | 2018-12-25 | 华为终端（东莞）有限公司 | The method and terminal device of acoustic processing |
-
1993
- 1993-11-23 CN CN 93114974 patent/CN1031905C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN1091579A (en) | 1994-08-31 |
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