CN100538560C

CN100538560C - Electronic beat sound-calibrator and control method thereof

Info

Publication number: CN100538560C
Application number: CNB2003801032476A
Authority: CN
Inventors: 曾科; 曾平蔚
Original assignee: WEIKE ELECTRONIC SCIENCE-TECHNOLOGY DEVELOPMENT Co Ltd SHENZHEN
Current assignee: WEIKE ELECTRONIC SCIENCE-TECHNOLOGY DEVELOPMENT Co Ltd SHENZHEN
Priority date: 2002-11-26
Filing date: 2003-11-12
Publication date: 2009-09-09
Anticipated expiration: 2023-11-12
Also published as: AU2003284803A1; WO2004049078A1; CN2602456Y; CN1711510A; CN1503088A

Abstract

The invention discloses a kind of electronic beat sound-calibrator, comprise casing, indicating member, LCD display, push-button unit, microphone, loudspeaker and control module; The indication point that indicating member is arranged by the casing surface longitudinal is formed, and LCD display and push-button unit also are installed on the machine shell panel, and control module is directly controlled indicating member indication beat, and from loudspeaker output beat voice prompt signal; Or, judge the height of sound from the voice signal that the microphone reception is imported, the control indicating member is indicated pitch, sound is low or accuracy in pitch; Control module is also controlled LCD display display reminding information.The present invention has metronome and two kinds of functions of CALIBRATION simultaneously concurrently, both can the economize on hardware cost, saved usage space again, and no matter during in beat demonstration or tuner, all adopt the vertical indicating mode that meets common cognitive custom of people and ocular rules, greatly made things convenient for the use of electronic beat sound-calibrator.

Description

Electronic beat sound-calibrator and control method thereof

Technical field

The present invention relates to a kind of electro-acoustic equipment and control method thereof, especially a kind of electronic beat sound-calibrator that has metronome and two kinds of functions of CALIBRATION concurrently, and control the method that this electronic beat sound-calibrator is finished beat demonstration and tuner function.

Background technology

In music teaching, musical instrument exercise and other music practice, metronome and CALIBRATION all have a wide range of applications.Learning music, musical instrument be unable to do without training and grasp beat accurately, and metronome is the indispensable instrument of learning music and musical instrument always; And in musical instrument study, the sound of musical instrument accurately also is a very important problem, if the sound of musical instrument is inaccurate, can influence judgement and music musicality to the sound height, so before practising, must carry out tuner to the musical instrument of learning and play with CALIBRATION.

Development along with modern electronic technology, musical composition, performance and music teaching have had more and higher requirement to enriching and improving of musical works sound and rhythm, the CALIBRATION of the metronome of traditional machinery or simulation machinery and single twelve-tone equal temperament can't satisfy people's demand, so the electronic tonometer of high-quality electronic metronome and multiple tuner pattern occurred, but existing electronic metronome and electronic tonometer all have only the function of beat demonstration or tuner, function ratio is more single, be unfavorable for reducing cost, if a kind of beat demonstration or two kinds of functions of tuner of having concurrently can be arranged, and beat is demonstrated indicator and the organic electronic beat sound-calibrator that merges of tuner demonstration indicator, just can accomplish that the symphysis of volume size produces cost and all be more or less the same with the electronic metronome or the CALIBRATION of simple function, be certain to obtain user's welcome, obtain good social benefit and economic benefit.

The two integrates with electronic metronome and CALIBRATION, not that simple parts with the two merge, but the control module of whole electronic beat sound-calibrator, control method, corresponding variation all will take place in the displaying symbol content, so this has become the producer that troubles electronic metronome and CALIBRATION and user's a difficult problem always.

Summary of the invention

A technical matters to be solved by this invention is to provide a kind of electronic beat sound-calibrator, has two kinds of functions of metronome and CALIBRATION simultaneously concurrently; And, at indication beat and pitch, sound is low and adopted the indicating member of being made up of jointly the indication point of casing upper surface during accuracy in pitch.

Another technical matters to be solved by this invention is to provide electronic beat sound-calibrator, has two kinds of functions of metronome and CALIBRATION simultaneously concurrently; And, at indication beat and pitch, sound is low and the indicating member that adopts during accuracy in pitch the display segment on the LCD display to form.

Another technical matters to be solved by this invention is to provide a kind of control method that electronic beat sound-calibrator is finished beat demonstration and tuner function that is used to control.

Technical scheme of the present invention is as described below:

A kind of electronic beat sound-calibrator comprises: casing, LCD display, indicating member, push-button unit, microphone, loudspeaker and control module;

Described indicating member is made up of at the indication point on casing surface linear array, and LCD display and push-button unit are installed on the machine shell panel;

Described microphone and loudspeaker are installed in the casing, and the relevant position on machine shell panel is provided with microphone pickup hole and loudspeaker sound hole;

Described control module comprises: central processing unit, LCD display circuit, indicating circuit, key circuit, sound receiving processing circuit and audio output circuit;

The input of described key circuit is connected with push-button unit, and the output of key circuit is connected to central processing unit, is used for transmitting the information that button is pressed to central processing unit;

The input of described sound receiving processing circuit links to each other with microphone, outputs to the input end of central processing unit after the voice signal filtering that receives is amplified;

Described indicating circuit receives the control signal of central processing unit, and the control indicating member is indicated beat or pitch, sound is low and accuracy in pitch;

Described LCD display circuit receives the output information of central processing unit, outputs on the LCD display;

Described audio output circuit receives the sound signal of the output of central processing unit, outputs to loudspeaker output after the amplification;

Described central processing unit is responsible for the analyzing and processing of signal, and output control signal and sound signal are cores of the present invention;

Can make the present invention enter the CALIBRATION pattern by push-button unit, under this pattern, central processing unit is measured the height by sound receiving processing circuit sound import, the control indicating member by this sound and standard pronunciation higher/on the low side how much indicate pitch, sound is low or accuracy in pitch; Control LCD display display status information;

Can make the present invention enter the metronome pattern by push-button unit, under this pattern, the central processing unit output audio signal is to audio output circuit, drive loudspeaker plays beat prompt tone, control the parameter indication beat that indicating member is provided with by this beat simultaneously, and by the LCD display display status information.

Another kind of electronic beat sound-calibrator of the present invention comprises: casing, LCD display, push-button unit, microphone, loudspeaker and control module;

Described LCD display comprises the indicating member that is formed as indication point by the liquid crystal display section in the particular display area of LCD display of arranging, and LCD display and push-button unit are installed on the machine shell panel;

Described control module comprises: central processing unit, LCD display circuit, key circuit, sound receiving processing circuit and audio output circuit;

Described LCD display circuit receives the output information of central processing unit, outputs on the LCD display, receives the control signal of central processing unit output, and the indication point of the indicating member on the control LCD display is indicated beat or pitch, sound is low and accuracy in pitch;

Described central processing unit is responsible for the analyzing and processing of signal, output control signal and sound signal;

Can make the present invention enter the CALIBRATION pattern by push-button unit, under this pattern, central processing unit is measured the height of sound import, the indicating member of control LCD display by with standard pronunciation higher/on the low side how much indicate pitch, sound is low or accuracy in pitch; Control LCD display display status information;

Can make the present invention enter the metronome pattern by push-button unit, under this pattern, the central processing unit output audio signal is to audio output circuit, drive loudspeaker plays beat prompt tone, control the indicating member of LCD display simultaneously and indicate beat by the parameter that is provided with, and by the LCD display display status information.

The control method of electronic beat sound-calibrator of the present invention comprises the steps:

Step 1, start, system initialization;

Step 2, scanning have judged whether that key command is converted to the metronome pattern, if be converted to the metronome pattern, execution in step four; Otherwise, directly enter the CALIBRATION pattern, execution in step three;

Step 3, acquisition tuner parameter information, sound to input is analyzed, convert the result who analyzes to control signal, the control indicating member is indicated pitch, sound is low or accuracy in pitch, control LCD display display status information, if scan button under the prompting of LCD display, require the change indicating member to select # or b display mode, then change # or b display mode;

Step 4, acquisition demonstration beat information are carried out the parameter setting, export required beat audio-signal-driven loudspeaker plays beat prompt tone, control indicating member indication beat simultaneously, control LCD display display status information;

If step 5 scans shutdown command, then close beat sound-calibrator and enter the dormancy holding state.

Electronic beat sound-calibrator of the present invention, by by single-chip microcomputer as the core central processing unit, cooperate other functional circuits, finished the various device control function, realized in same device, having concurrently metronome and two kinds of functions of CALIBRATION, both can the economize on hardware cost, saved usage space again, and no matter during, meet vertical indicating mode of common cognitive custom of people and ocular rules, greatly made things convenient for the use of electronic beat sound-calibrator by employing in beat demonstration or tuner.

Description of drawings

Fig. 1 is the profile synoptic diagram that the present invention adopts the embodiment of the indicating member that miniature bulb or light emitting diode form;

Fig. 2 is the circuit diagram that the present invention adopts the embodiment of the indicating member that miniature bulb or light emitting diode form;

Fig. 3 is that multi part demonstration 2:3 of the present invention claps the sound principle schematic;

Fig. 4 is that multi part demonstration 2:4 of the present invention claps the sound principle schematic;

Fig. 5 is the profile synoptic diagram that the present invention adopts the embodiment of the indicating member that the display segment on the LCD display forms;

Fig. 6 is the circuit diagram that the present invention adopts the embodiment of the indicating member that the display segment on the LCD display forms.

Embodiment

Below in conjunction with drawings and Examples technical scheme of the present invention is further described:

Embodiment 1:

The electronic beat sound-calibrator of the embodiment of the invention 1 as shown in Figure 1, comprising: casing 1, indicating member 2, LCD display 3, push-button unit 4, microphone, loudspeaker and a control module;

Indicating member 2 is made up of linear array indication point 5 on casing 1 panel, and this indication point 5 can be a light emitting diode, also can be miniature bulb; Linear array is meant after all light emitting diodes or miniature bulb are arranged the directivity of an integral body, and not necessarily will be arranged in straight line as Fig. 1.Luminous being of light emitting diode or miniature bulb enters indicating status, and not luminous then is non-indicating status;

LCD display 3 and push-button unit 4 also are installed on the panel of casing 1; Described machine shell panel is provided with microphone pickup hole 6 and loudspeaker sound hole 7, and the relevant position of microphone pickup hole 6 and loudspeaker sound hole 7 back is equipped with microphone and loudspeaker in casing;

The control module of the electronic beat sound-calibrator of the embodiment of the invention 1 as shown in Figure 2, comprising: central processing unit 100, indicating circuit 101, LCD display circuit 102, key circuit 103, sound receiving processing circuit 104 and audio output circuit 105;

The input of described key circuit 103 is connected with push-button unit, and the output of key circuit 103 is connected to central processing unit 100, is used for transmitting the information that button is pressed to central processing unit 100; The input of described sound receiving processing circuit 104 links to each other with microphone, outputs to the input end of central processing unit 100 after the voice signal filtering that receives is amplified; Described audio output circuit 105 receives the sound signal of the output of central processing unit, outputs to loudspeaker output after the amplification;

Described indicating circuit 101 receives the control signal of central processing unit 100, controls the luminous of indicating member indication point; Described LCD display circuit 102 receives the output information of central processing unit 100, outputs on the LCD display;

Described central processing unit 100 is cores of control module of the present invention, and after the start, central processing unit control entire circuit enters the CALIBRATION duty; Can enter the metronome state by the push-button unit commutation circuit.

Under the CALIBRATION state, central processing unit receives musical instrument or other sound by the microphone input, carries out frequency measurement and spectrum analysis then, again according to results of spectral calculating group preface, musical alphabet and cent deviation; At last, the result that central processing unit will calculate converts control signal to, outputs to indicating member and LCD display, the control indicating member by higher/on the low side how much indicate pitch, sound is low or accuracy in pitch, controls the LCD display display status information simultaneously.

The status information that described LCD display shows can comprise the pitch status information;

Described relevant pitch status information comprises the twelve-tone equal temperament musical alphabet of all sharps and the twelve-tone equal temperament musical alphabet of flat, that is: " C, #C, D, #D, B, F, #F, G, #G, A, #A, B " and " C, bD, D, bE, E, F, bG, G, bA, A, bB, B ".

Under the metronome pattern, central processing unit at first shows the beat parameter information of acquiescence by LCD display, if the user need change the parameter of acquiescence, then by the push-button unit input parameter, behind the parameter information of the beat that the central processing unit acquisition need be demonstrated, carry out the parameter setting; Then, beat prompt tone signal is outputed to loudspeaker, drive loudspeaker plays beat prompt tone, control indicating member simultaneously by the parameter indication beat that is provided with, by the LCD display display status information.

Described beat prompt tone can be set to the inverted beat prompt tone of sound intensity.The inverted beat prompt tone of so-called sound intensity is meant that the frequency of corresponding beat prompt tone is low when demonstration during strong beat, as strong beat sound " rub-a-dub "; And when demonstration weak beat and non-strong beat, the frequency height of corresponding beat prompt tone " is rattled away " as weak beat and non-strong beat sound.

In existing beat prompt tone, the frequency height of corresponding strong beat prompt tone, the frequency low " sting and rattle away; sting and rattle away " of corresponding non-strong beat prompt tone, situation in this and the music practice is then on the contrary: frame drum is that bass pin drum is done strong beat, snare drum is made weak beat, national percussion music is that wooden fish strikes strong beat, a pair of hand-held bells played by striking together strikes weak beat, or do strong beat with the bass (striking the big one side of diameter) of double-bang firecracker tube, high pitch (striking the little one side of diameter) with the double-bang firecracker tube is made weak beat, as " rub-a-dub-rattle away; rub-a-dub-rattle away ... ", " rub-a-dub-crash-crash; rub-a-dub-crash-crash ... " all be that the strong beat frequency is low, the high example of non-strong beat frequency; The rhythm part of instrument playing rhythm or band also is like this: it is to play strong beat, 1,2,3 strings (high pitch string) deduction weak beat with 4,5,6 strings (bass string) that the rhythm type of guitar is played; Then be to play strong beat by bass or violoncello in the band, other musical instrument is played non-strong beat etc.This beat prompt tone opposite with music practice brought a lot of inconvenience to the user, the present invention can overcome this problem by the inverted beat prompt tone of sound intensity, make metronomic effect more near music practice, help impression and the raising musicality of music-learner the music artistic conception.

Control module is the center by above circuit structure with the central processing unit, finishes the control function of metronome and CALIBRATION; The output of display message of the indication control of input, indicating member of button control signal and acoustic information and LCD display and the output control of beat sound signal have been realized.

As shown in Figure 2, central processing unit 100 is a single-chip microcomputer (MCU) and accessory circuit thereof; The single-chip microcomputer model of selecting for use is S3P72N4.Single machine output end P3 (P3.1-P3.3) and P8 (P8.2-P8.7) are connected to indicating member circuit 101, key circuit 103 is connected to the P6 port of single-chip microcomputer, and sound receiving processing circuit unit 104 is connected with the corresponding port of audio output circuit unit 105 and single-chip microcomputer.LCD display circuit 102 comprises a LCD display chip, and the model of selecting for use is LCD display chip C8555.The SEG output port of single-chip microcomputer links to each other with COM port with the SEG of LCD display chip with the COM output port; The LCD display chip receives the output of central processing unit, and the output of LCD display chip is connected to LCD display.

For better and music practice match, the convenient use, the present invention adopts the indicating member of vertical arrangement, and promptly all the arrangement mode of indication points is vertical arrangement mode, and all indication points are vertical arrangement on the whole.Each light emitting diode or miniature bulb independently are installed in and are arranged in vertical linearly or whole light emitting diodes or miniature bulb formed an integral body of vertically arranging on the casing 1, are installed to then on the casing 1, form vertical indicating member;

Indicating circuit (vertically indicating circuit) 101 comprises two groups of triodes, every group on these two groups of triodes are got any one combination of one and are all controlled on the casing the vertically light emitting diode or the miniature bulb of indicating member, and the output of central processing unit is controlled the luminous of the light emitting diode of vertical indicating member or miniature bulb by the conducting of controlling these two groups of triodes.

Comprise all corresponding telegraph key of each button of key circuit 103, button is pressed, and telegraph key connection corresponding circuits is connected with single-chip microcomputer; After the voice signal process RC filtering of sound receiving processing circuit 104 with input, output to the P1.0 port of single-chip microcomputer after the amplification of the integrated operational amplifier LM385 of process two-stage; Audio output circuit 105 is power amplification circuits, links to each other with the P2.3 port of single-chip microcomputer, and sound signal through after the power amplification, is driven the loudspeaker sounding; Audio output circuit and sound receiving processing circuit all have the output/input jack of standard.Sound receiving processing circuit of the present invention and audio output circuit can certainly only have jack and not have loudspeaker and microphone, such design is more conducive to miniaturization of the present invention (but using inconvenience), is a kind of replacement commonly used on circuit with directly having loudspeaker and microphone.

When carrying out the beat demonstration, can make electronic metronome enter the beat presentation state by push-button unit, single-chip microcomputer is by LCD display circuit control LCD display display reminding information, then, receive the beat information that to demonstrate from key circuit by push-button unit, by single-chip microcomputer corresponding beat voice prompt is sent into loudspeaker and broadcast; Simultaneously, control vertical indicating member and vertically show beat, control LCD display display status information.

When carrying out tuner, can make electronic metronome enter the tuner state by push-button unit, single-chip microcomputer be by LCD display circuit control LCD display display reminding information, then, receive the tuner project information from key circuit by push-button unit, receive the sound that needs tuner from microphone again; Control module is judged the height of sound, controls that vertical indicating member is vertically indicated pitch, sound is low or accuracy in pitch; Simultaneously, control LCD display display status information.

By above device, realized the function of metronome and CALIBRATION, and adopted the electron luminescence point of vertical arrangement to indicate beat or show pitch, sound is low or accuracy in pitch, meets the music practice rule more.

In the beat presentation process, when vertically partly clapping before the indicating member indication, cooperate with the voice prompt that loudspeaker sends, the beat prompt tone that promptly vertical indicating member indication beat and loudspeaker send matches in time; Control module control vertical indicating member from top to bottom order makes all or part of indication point luminous, and each has at least an indication point luminous constantly, preceding half claps when finishing, and makes in whole indication points the indication point of below luminous; If luminous point is regarded as (visual effect) that can move, to clap preceding half, luminous point certain from whole indication points a bit begins, and moves to the below of whole indication points.

Certainly adopt the more than one indication point luminous beat of demonstrating simultaneously, such as from top to bottom (with partly clap before the music metre identical) order make all or part of indication point luminous, indication point after luminous does not extinguish, and preceding half claps when finishing from starting point to descending most point all luminous, extinguishes simultaneously again.This demenstration method only needs indication point to finish to extinguish simultaneously to get final product in preceding half bat, is the simple replacement of above-mentioned control method; Also can adopt the delay extinguishing method to make the motion (visual effect) of luminous point look like that a tail is demonstrated beat in tow.

When vertically indicating member is indicated later half bat, with partly clap similarly before the indication, control module control indication point makes all or part of indication point luminous from the electron luminescence point of below from the bottom to top in proper order, when later half bat finishes, make corresponding last indication point luminous; Promptly in later half bat, luminous point from whole indication points the indication point of below begin, move to a certain indication point, later half bat finishes, and begins to demonstrate next bat.

When the demonstration strong beat, the scope of luminous indication point equals whole electron luminescence points; When the demonstration weak beat, the scope of luminous indication point is less than or equal to 1/2nd of whole electron luminescence points.Because beat, one is a bat on next, and said here scope is meant that continuous luminous indication point in proper order comprises those indication points when demonstration complete is clapped; If luminous point is regarded as and can be moved, described scope is the scope of luminous point electron luminescence point of process in claps.

Demonstrate beat by above vertical mode, consistent with the mode of showing bat in the music activity, the practice law that meets music more, make the user when the individual practises as there being the Music Teacher show bat with oneself hitting to clap, can understand beat information by vertically indicating, greatly make things convenient for the user.

Vertically in the indication point of vertical arrangement of indicating member, comprise an instructions of the Central Committee point 8, as shown in Figure 1, respectively there is the indication point of some described instructions of the Central Committee point above and below, indication point quantity generally speaking, the quantity of above and below is identical, how much deciding in its sole discretion of quantity by the deviser, the visual experience effect of many more demonstrations of quantity and tuner is good more, but occupation space is also big more, and cost is high more.

In the tuner process, if sound is accurate, it is 8 luminous that the instructions of the Central Committee are put, and remaining indication point is not luminous; If sound is higher/some units on the low side, it is luminous from several/the indication points that on the low side units identical higher with sound of central indication point 8 that the instructions of the Central Committee are put 8 tops/below; If the i.e. higher unit of sound, the instructions of the Central Committee are put 8 tops and the instructions of the Central Committee, and to put 8 adjacent first indication points luminous, and remaining indication point is not luminous; If higher two units of sound, the instructions of the Central Committee put that second electronics indication point 8 of 8 tops is luminous, and remaining electron luminescence point does not work, and the like; If sound is an on the low side unit, the instructions of the Central Committee are put 8 belows and the instructions of the Central Committee, and to put 8 adjacent first electronics indication points luminous, and remaining electronics indication point does not work; If sound is on the low side two units, the instructions of the Central Committee put that second electronics indication point of 8 belows is luminous, and remaining electron luminescence point does not work, and the like.Sound is higher/and unit on the low side can be a higher/cent on the low side or several cent, also can be higher/hertz on the low side or several hertz, require to determine according to the number of indication point and the degree of accuracy of tuner.

Above indicating mode, both made the user can know the accuracy in pitch situation of own strings for musical instruments sound very intuitively, and know gap with standard pitch, and this vertical mode is demonstrated beat, meet that to hit one of bat in the music practice be a bat on next, the strong beat amplitude is big, the actual rule that the weak beat amplitude is little, visual in image, make the intension of people's music bat easier to understand.

The value volume and range of product of button is according to the requirement of Control Software and setting and different in the push-button unit 4 of the present invention, generally comprise five buttons at least: be respectively under the metronome state: 1. beat starts/stops the power switch function key of holding concurrently, 2. the beat type is provided with the conversion of holding concurrently and enters CALIBRATION mode capabilities key, 3., 4. the tempo setting adds/subtracts key, shows that 5. clapping the sound duration is provided with the double bat sound part option key that shows; Under the CALIBRATION state, be respectively: the 1. lifting/lowering display mode selection function key power switch function key of holding concurrently, 2. tuner the mode option button is held concurrently to change and is entered metronome mode capabilities key, 3., 4. manual tuner+/-sound of selecting or demonstrate+/-selection key, as select 2 string sounds of guitar or 3 string sounds etc. when selecting the tuner of 1 string of guitar or 2 strings or the demonstration sound being set, simultaneously 3., 4. the 440Hz standard of holding concurrently setting+/-button, 5. the standard pronunciation demonstration is provided with button, a described button has other functions concurrently and is meant that a button has two kinds of functions, described two kinds of functions are the control by Single Chip Microcomputer (SCM) program, (reinstatement) pressed and lifted to button in short time be designed to a kind of function, be designed to another kind of function and connect down (as press ﹠ hold kept two seconds) the button long period.

Above example just describes button of the present invention, is not kind and quantity and the corresponding function that limits button in the push-button unit of the present invention, can adopt different button designs to finish identical functions fully.Can also consider to determine the increase and decrease of push-button unit quantity or the mutual intersection replacement of relevant each keypress function according to aspects such as product function needs designs and product structure are handsome in appearance.

Embodiment 2:

The embodiment of the invention 2 has provided the electronic beat sound-calibrator that adopts the vertical indicating member of vertically arranging in the LCD display specific region of liquid crystal display section conduct.Principle, function and the circuit of the electronic beat sound-calibrator each several part of embodiment 2 and the electronic beat sound-calibrator of embodiment 1 are similar, vertical indicating member of embodiment 2 is made up of the liquid crystal display section of vertically arranging in the LCD display specific region, and control module is made corresponding adjustment; As shown in Figure 5, comprising: casing 1, LCD display 3, push-button unit 4, microphone, loudspeaker and control module;

Described LCD display 3 and push-button unit 4 also are installed on the panel of casing 1; Specific region on the display screen of this LCD display 3 is provided with by the liquid crystal display section 9 of vertically arranging on the display screen forms vertical indicating member 2, and each liquid crystal display section 9 all has demonstration and do not show two states, is used for representing indicating status and non-indicating status.

Described microphone and loudspeaker are installed in the casing, are provided with microphone pickup hole 6 and loudspeaker sound hole 7 on machine shell panel;

The control module of the embodiment of the invention 2 does not comprise indicating circuit.The function of key circuit, sound receiving processing circuit and audio output circuit and the counterpart of the embodiment of the invention 1 are identical, the function of central processing unit, LCD display circuit is also very approaching, as shown in Figure 6, comprising: central processing unit 100, LCD display circuit 110, key circuit 140, sound receiving processing circuit 130, audio output circuit 120 and power circuit 150.

More convenient to operate in order to reduce cost, to make, the more important thing is that the surface structure of realizing product designs and the miniaturization Design of entire product volume, signal input-acoustic pickup the jack that the signal of sound receiving processing circuit can be exported an earphone jack and audio output circuit unites two into one, and realizes the function of these two kinds of jacks with a public jack.

Be the circuit diagram that the present invention adopts the embodiment of two-in-one jack as shown in Figure 6, common hub is the dual-channel headphone jack, and the common port of this two-channel jack connects ground wire, and a circuit path connects microphone, and another circuit path connects loudspeaker.Under the CALIBRATION state, this dual-channel headphone socket is made the acoustic pickup socket and is used, when inserting acoustic pickup, connecting the circuit path of microphone can automatic cutout make acoustic pickup receive external signal and microphone is inoperative, this moment is because audio output circuit (power amplification circuit) is in off position, so there is not the influence to the voice signal output function; Under the metronome state, the dual-channel headphone socket is made receiver J-Horner again and is used, when inserting earphone, the circuit path that connects loudspeaker can automatic cutout makes not sounding sound and earphone produces voice signal of loudspeaker, this moment is because the sound receiving processing circuit is in off position, so also there is not the influence to the reception external signal function of CALIBRATION.

The input of described key circuit 140 is connected with push-button unit 4, and key circuit 140 connects output and is connected to central processing unit 100, is used for transmitting the information that button is pressed to central processing unit; The input of described sound receiving processing circuit 130 links to each other with microphone, outputs to the input end of central processing unit 100 after the voice signal filtering that receives is amplified; Described audio output circuit 120 receives the sound signal of the output of central processing unit 100, outputs to loudspeaker output after the amplification;

The LCD display circuit receives the information and the status information of central processing unit, and these information are outputed on the LCD display; Receive the control information of central processing unit, the control corresponding deixis is finished in the demonstration of display segment in the vertical indicating member 8 of control liquid crystal;

The workflow of central processing unit is basic identical among the workflow of described central processing unit and the embodiment 1, and difference is that central processing unit does not directly pass through the triode in the vertical indicating circuit of control, controls light emitting diode or miniature bulb; But transmit control command to the LCD display circuit, and control the liquid crystal display section of vertical indicating member by the LCD display circuit, finish vertical deixis.

In the circuit, central processing unit 100 is a single-chip microcomputer (MCU) and accessory circuit thereof as shown in Figure 6; The single-chip microcomputer model of selecting for use is S3P72N4.The COM of single-chip microcomputer is connected the input port of LCD display circuit 110 with the SEG output port, communicate by letter with the LCD display circuit; The output of key circuit 140 is connected to the P6 port of single-chip microcomputer, and the output of sound receiving processing circuit unit 130 is connected to the P1.0 input port of single-chip microcomputer, and audio output circuit unit 120 is connected with the corresponding port of single-chip microcomputer.

LCD display circuit 110 comprises a LCD display chip CS555, the SEG output port of central processing unit links to each other with COM port with the SEG of LCD display chip with the COM output port, the LCD display chip not only receives the appointed area that information outputs to LCD display from single-chip microcomputer, and receive the control information of single-chip microcomputer, finish demonstration control display segment in the vertical indicating member 2 of liquid crystal.

Control module is directly controlled the vertical indicating member 2 of liquid crystal and is indicated beats or receive the voice signal of importing from microphone, judges the height of sound, and the vertical indicating member 2 of control liquid crystal is indicated pitches, sound is low or accuracy in pitch; Control module receives control signal from push-button unit 4, finishes control function; Control module is finished sound output function from loudspeaker output voice prompt or metronome tone signal; Control module control LCD display 3 display message.

When carrying out the beat demonstration, can make electronic metronome enter the beat presentation state by push-button unit, control module control LCD display 3 display reminding information, then, receive the beat information that to demonstrate from push-button unit 4, by control module corresponding beat voice prompt is sent into loudspeaker and broadcast; Simultaneously, the vertical indicating member 8 of the liquid crystal of control LCD display vertically shows beat, and control LCD display 3 display status informations.

When carrying out tuner, can make electronic metronome enter the tuner state by push-button unit, control module control LCD display display reminding information then, receives the tuner project information from push-button unit, receives the sound that needs tuner from microphone again; Control module is judged the height of sound, and the vertical indicating member 2 of the liquid crystal of control LCD display is vertically indicated pitch, sound is low or accuracy in pitch; Simultaneously, control LCD display display status information.

In the liquid crystal display section 9 of vertical arrangement of the vertical indicating member 2 of the liquid crystal of described LCD display 3, comprise a central display segment 10, respectively there is the liquid crystal display section of some described central display segment 10 above and belows.

The liquid crystal display section 9 of vertical indicating member 2 of the described electronic beat sound-calibrator control modules control of the embodiment of the invention 2 LCD display vertically indication beats and indication pitch, sound is low and the mode of accuracy in pitch and embodiment 1 in control module control vertical indicating member indication point indication beat and indicate pitch, sound is low and the mode of accuracy in pitch is identical.

Different at different users' hobby and custom, the designed multiple beat prompt tone of the present invention satisfies different needs, and the user can be as required, selects wherein any one or its combination.

The present invention is when carrying out the beat demonstration, and the beat voice prompt from loudspeaker output comprises two class sound: the one, and simulation Chinese percussion instrument sound can be big or small wooden fish sound, height double-bang firecracker tube sound, pair of hand-held bells played by striking together sound, castanets sound etc.; The 2nd, voice is counted bat sound, can be that Chinese female voice number is clapped, Chinese male voice number is clapped, and standard Chinese female voice number is clapped, Chinese Cantonese female voice number is clapped, English rising tune female voice number is clapped, English falling tone female voice number is clapped, English rising tune male voice number is clapped, English falling tone male voice is counted bat etc.

Described beat prompt tone also comprises the multi part beat prompt tone that the mixing sound that formed by the combination of different prompt tone forms.Described multi part beat voice prompt can be counted bat sound and simulation Chinese percussion instrument sound and voice by different simulation Chinese percussion instrument sound, different voice and count the compound voice that bat sound makes up and form.

Be how the detailed explanation multi part beat prompt tone of example is combined to form with alliteration portion below.

For example, described simulation Chinese percussion instrument sound comprise " rub-a-dub " and " rattling away ", described voice is counted bat sound and is comprised English " ONE ", " TWO ", " THREE ", " FOUR ", " FIVE ", " SIX " and " AND ".Certainly, also can be the speech sound of Chinese or other national identical meanings,

The compound voice that described simulation Chinese percussion instrument sound and voice are counted bat sound refers to that a single simulation Chinese percussion instrument sound and a single voice counts the sound that bat sound sends simultaneously, comprise " rub-a-dub+ONE ", " rattling away+TWO ", " rattling away+THREE ", " rattling away+FOUR ", " rattling away+FIVE ", " rattling away+SIX " and " rattling away+AND "

Described alliteration portion beat voice prompt is meant that voice counts the different rhythm figures that bat sound and two kinds of different types of sound of simulation Chinese percussion instrument sound are indicated two parts simultaneously respectively, comprises a pair of two, two pairs of three, two pairs of fourth class etc.,

With regard to 2/4 claps, give an example,

Described a pair of two are meant that a part is a crotchet, are that voice is counted bat sound, whenever clap a sound, two parts are quaver, be percussion music class sound equipment, whenever clap two sounds, two part reverberation effects are " rub-a-dub+ONE "---" rattling away ", " rattling away+TWO "---" rattling away " ..., promptly a part be " ONE, TWO; ONE, TWO ... " several bat sound, two parts for " rub-a-dub rattle away, rattle away; rub-a-dub rattle away, rattle away ... " and the strike music

2:3 claps shown in the sound principle schematic as the demonstration of Fig. 3 multi part, one part is a quaver, be that voice is counted bat sound, whenever clap two sounds, two parts are tritone, it is percussion sound, whenever (◎ is for hitting the two-in-one compound voice of music and number bat sound to clap three sounds, zero is that single voice is counted bat sound or single percussion music class sound equipment), two part reverberation effects are " rub-a-dub+ONE "---" rattling away "---" AND "---" rattling away ", " rattle away+TWO "---" rattling away "---" AND "---" rattling away " ..., promptly a part be " ONE---AND; TWO---AND; ONE---AND; TWO---AND ... " several bat sound, two parts are for " rub-a-dub---rattling away---rattled away; rattle away---rattling away---rattles away; rub-a-dub---rattling away---rattled away, rattle away---rattling away---rattle away ... " and Chinese percussion instrument sound.

2:4 claps shown in the sound principle schematic as the demonstration of Fig. 4 multi part, one part is a quaver, be that voice is counted bat sound, whenever clap two sounds, two parts are semiquaver, it is percussion sound, whenever clap four sounds, two part reverberation effects are " rub-a-dub+ONE "---" rattling away "---" rattling away+AND "---" rattling away ", " rattle away+TWO "---" rattling away "---" rattling away+AND "---" rattling away " ..., promptly a part be " ONE---AND; TWO---AND; ONE---AND; TWO---AND; ... " several bat sound, two parts for " rub-a-dub---rattle away---rattling away---rattles away; rattle away---rattle away---rattling away---rattles away, rub-a-dub---rattle away---rattling away---rattles away; rattle away---rattle away---rattling away---rattles away ... " and Chinese percussion instrument sound.

A described part and two parts can exchange.

In circuit design,, generally adopt two kinds of methods for the function above realizing, the one, the beat prompt tone is cured among the ROM of central processing unit such as single-chip microcomputer, need not to increase new chip and circuit like this, favourable and economize on hardware cost; But because the finite capacity of the ROM of single-chip microcomputer, can't provide more function to select, make the beat prompt tone become dull, function singleness, so generally also can adopt the method that increases a speech chip, store multiple beat prompt tone therein, provide personalized service at different areas and crowd.

120 parts are circuit diagrams that audio output circuit of the present invention comprises the embodiment of speech chip among Fig. 6, that described speech chip is selected for use is speech chip WK2134,1,8 pin are respectively power supply, ground wire, 9 pin connect a resistance to power supply, add inner oscillatory circuit, produce the required clock signal of chip.

Various simulation Chinese percussion instrument sound that the present invention sets and voice are counted bat sound in advance through recording, editing and convert to certain form such as adpcm data form, leave in this chip memory.

The P1.0 of this voice core, P1.1, P1.2, P1.3 are the data communication mouths, and it is connected on the single-chip processor i/o, receive the control command that CPU sends, and send answer signal to single-chip microcomputer after receiving control command.In fact the control command of single-chip microcomputer is exactly to require speech chip to send a certain sound immediately, speech chip is exported the data of shoo after receiving this instruction, at the 2nd pin output sound signal, pass through outside filtering circuit, amplifying circuit again behind the process inner decoding circuit; Chip 7368 among Fig. 6 is that voice amplify chip, and voice signal amplifies the rear drive loudspeaker through it, can export the sound that will send at loudspeaker.

Embodiment 3:

Step 1, start, system initialization;

Can regulate the different conditions that makes the present invention be in metronome or CALIBRATION by the model selection button, directly enter the state of CALIBRATION after the start, step can simplify the operation; If select the metronome pattern, also can't increase step.

Step 3 of the present invention, control the present invention finishes the function of tuner, and some functions relevant with tuner, specifically comprises the steps:

Step 30, show default information by LCD display;

Step 31, carry out key scan, if shutdown command is arranged, execution in step five; If for being converted to the metronome mode instruction, execution in step four; If be by button under the prompting of LCD display, change A4 standard pronunciation standard is then changed A4 standard pronunciation standard, execution in step 32; If carry out A4 demonstration pronunciation, execution in step 34; If without any key command, execution in step 32;

Step 32, the musical instrument sound of input is carried out frequency measurement and spectrum analysis, compare the difference of calculating group preface, musical alphabet and cent with the frequency of the standard pronunciation of setting;

Step 33, convert result calculated to control signal, control indicating member indication pitch, sound is low or accuracy in pitch, and control LCD display display status information re-executes step 31;

Step 34, whether change the parameter of A4 demonstration sound,, under the prompting of LCD display, change the parameter of A4 demonstration sound, execution in step 35 by button if change; Otherwise direct execution in step 35;

Step 35, carry out A4 demonstration pronunciation; If the A4 of stopping demonstration pronunciation instruction is arranged, then stops A4 demonstration pronunciation, execution in step 31; If do not stop A4 demonstration pronunciation instruction, then execution in step 34.

Under the CALIBRATION pattern, also can be by model selection key change mode of operation of the present invention.LCD display cooperates with push-button unit, is used for exchanging with the user, finishes the selection of difference in functionality and the setting of different parameters.Change tuner parameter described in the step 31 mainly refers to the tuner (as guitar, violin etc.) that changes A4 standard (as 440Hz or 441Hz etc.) and specify disparity items.

The present invention measures the frequency of the musical instrument sound of input, and carry out after the spectrum analysis comparing with the frequency of the standard pronunciation of parameter setting, calculate the musical instrument sound of input and standard pronunciation is organized preface, musical alphabet and cent in calculating difference, and show these information by LCD display, simultaneously according to predefined unit, calculate and make which indication point enter indicating status, represent the height of the sound imported, the output control signal corresponding is finished indication.

Generally speaking, the frequency range of indication point correspondence is not linear, but middle corresponding range frequencies narrower (centre is several can be linear, is beneficial to adjusting), in the hope of reaching higher tuner precision; The frequency range broad that both sides are then corresponding increases the tuner frequency range, go up most/indication point under can comprise that all exceed/be lower than the frequency range of the frequency values of setting.

Carrying out A4 demonstration pronunciation is a function commonly used of CALIBRATION, after having selected this function, the parameter that setting is pronounced (mainly being frequency) drives the A4 demonstration sound that loudspeaker sends this frequency by single-chip microcomputer output, pronouncing frequency can 435-445Hz or wider between.

In step 31, the present invention realizes the function conversion by push-button unit, is that example describes with the push-button unit described in the embodiment of the invention 1:

1. button is the double simultaneously power switch function key of lifting/lowering display mode selection function key, a described button has other functions concurrently and is meant that a button has two kinds of functions, continuous scanning by single-chip microcomputer, the duration that is consecutively detected a push button signalling is designed to a kind of function at a special time with interior (user is short in button), and the duration (user is long by button) more than a special time that will be consecutively detected a push button signalling is designed to another kind of function.For this button, general with the function that is of little use for the convenience of the users, be the function of long button correspondence as mode conversion function and power switch function setting.

Single-chip microcomputer scans after push-button unit has signal, analyze the address of definite button and the time length of button, according to present mode state, the corresponding control function of startup, under the CALIBRATION pattern 1. the button weak point press, single-chip microcomputer shows liter or flat display mode by LCD display circuit control LCD display, passes through the 1. selected lifting/lowering display mode of button according to the user; 1. press by the bond distance under the CALIBRATION pattern, if this moment, beat sound-calibrator was in closed condition, single-chip microcomputer opening power then, Power-On Self-Test; If this moment, beat sound-calibrator was in running order, then the single-chip microcomputer powered-down directly enters closed condition or holding state; If (as 5 minutes) single-chip microcomputer does not scan any push button signalling or do not detect any input signal in the certain hour, then enter the dormancy off-mode.

Single-chip microcomputer is to the support of other keypress function conversions, to 1. button is similar, if the function of parameter setting, the Single-chip Controlling LCD display shows optional parameter, after the user selected parameter by button, the Single-chip Controlling beat sound-calibrator was finished the relevant parameters setting; If change the nonparametrics such as pattern of beat sound-calibrator function is set, single-chip microcomputer detects push-button unit and is in this state, directly makes adjustment, and finishes function corresponding.

2. button is that the double conversion of tuner the mode option button enters metronome mode capabilities key, and described tuner pattern comprises: guitar, bass, violin, Zheng, dulcimer, urheen and twelve-tone equal temperament tuner pattern etc.3., 4. button be manual tuner select+/-key (the up one by one selection of+expression,-expression descending one by one selection) or the demonstration sound the setting of advancing up and down, as under guitar tuner pattern, selecting a certain string (in 1-6 strings arbitrary), the empty string standard pronunciation of sending out the arbitrary string in guitar 1-6 strings perhaps is set when sending out the demonstration sound, 3., the 4. also double 440Hz standard setting of key+/-key, 445,444,443,442......435 435,436,437......445 promptly longly do up setting:, longly do descending setting: by 4. key by 3. key; 5. button is that the standard pronunciation demonstration is provided with button, press this button and enter A4 demonstration pronunciation state, single-chip microcomputer do not have scan under the demonstration sound state button 5. signal pronunciation promptly is set, output demonstration sound, single-chip microcomputer have scan under the demonstration sound state button 5. signal promptly be provided with and stop pronunciation, do not export the demonstration sound.

Above example is not kind and quantity and the corresponding function that limits button in the push-button unit of the present invention just to the operating function explanation of button of the present invention under the CALIBRATION state, can adopt different button designs to finish identical functions fully.

Described step 4, control the present invention finishes beat demonstration and correlation function, comprises the steps:

Step 40, show default information by LCD display;

Step 41, carry out key scan, if scan shutdown command, execution in step five; If scan conversion CALIBRATION mode instruction, execution in step four; If be by button under the prompting of LCD display, change beat parameter, so-called beat parameter comprises that beat type, speed, a part duration, two part durations, percussion music show bat sound kind, then change the beat parameter, execution in step 42; If timer overflows, the timer of then resetting; If scanning does not detect any key command, execution in step 42;

Step 42, carry out the parameter setting, calculation control indicating member and show the frequency division of bat sound; Start/stop the demonstration instruction if scan, export/stop required beat audio-signal-driven loudspeaker plays beat prompt tone, the beat of control/termination indicating member indication simultaneously, the dynamic display status information of control/interruption LCD display, so-called dynamically display status information is meant the part that the show pen Duan Zhongyu beat demonstration of LCD display in the beat presentation process changes synchronously, comprises the demonstration that adds up one by one of the dynamic demonstration up and down and the little joint number of vertical indicating member;

Step 43, execution in step 41.

Under the metronome state, exchange with the user that push-button unit cooperates by LCD display, obtain the beat information of required demonstration, the beat information that will be demonstrated by single-chip microcomputer converts the information of the clock frequency of single-chip microcomputer to, then just can be from single-chip microcomputer ROM or voice IC extract the beat prompt tone, rhythm output audio signal on request, simultaneously calculate the scope and time that indication point enters indicating status according to strong beat and weak beat and frequency information, convert result of calculation to control signal control indicating member indication beat, and by the LCD display display status information.

With the push-button unit described in the embodiment of the invention 1 is that example describes:

Each button is respectively under the metronome state: 1. beat starts/stops the power switch function key of holding concurrently, 1. single-chip microcomputer detects by scanning, and push button signalling also only continues in a special time (as 1 second), beginning beat demonstration under beat demonstration halted state, and demonstrate at the next beat that stops of beat demonstration carrying out state; If 1. single-chip microcomputer scanning detect push button signalling and continue more than a special time then that powered-down enters sleep state.2. the beat type is provided with the conversion of holding concurrently and enters CALIBRATION mode capabilities key, described beat type comprises: 1/4 bat, 2/4 bat, 3/4 bat, 4/4 bat, 3/8 bat and 3/8 bat etc., 2. single-chip microcomputer scanning detect, and push button signalling also only continues in a special time (as 1 second), then be provided with one by one and show the beat type, till the client confirms; 2. single-chip microcomputer scanning detect push button signalling and continue then to become current metronome be the CALIBRATION pattern more than a special time.3., 4. tempo setting+/-key, velocity range is 200 grades: 30-230 bats/minute, for the convenience of the users, design is short in for by 1 add/the retarded velocity setting, long by for adding fast continuously/the retarded velocity setting, single-chip microcomputer detects the ON time of these two buttons less than time rating (as 1 second) in the key scan process, promptly be judged as short by (lifting again at short notice after pressing), set and be shown as tempo the adding/subtract of level one by one, 3. single-chip microcomputer scanning detect or 4. push button signalling and only continuing in a special time, then be provided with one by one and the display speed variation, confirm (no longer till the button) until the client; Single-chip microcomputer scanning detect 3. or 4. push button signalling continue more than a special time, then be provided with fast continuously and display speed changes, till the client confirms to stop key.5. show that clapping the sound duration is provided with function key, comprise crotchet, quaver, tritone, semiquaver of a part (percussion sound) etc., selected to be provided with by this key by short, it is crotchet, quaver or rest that length is selected two parts (bat of voice number) are set by this key.If the user selects a part, the promptly short 5. key of pressing, 5. single-chip microcomputer scans, and key is short in state, i.e. circulation be provided with in turn and each duration of showing a part till the client confirms no longer button, if the user selects two parts, promptly long by 5. key (pin and do not put), single-chip microcomputer scan 5. key for long by state, (as changing for 1 second 1) circulation is provided with and shows crotchet, quaver or the rest of two parts in turn promptly at a slow speed, determines promptly no longer by till this key up to the client.Such as, the 2-3 that alliteration portion is set claps: shortly by 5. key one part is set to tritone, longly again be set to quaver by 5. key two parts, single-chip microcomputer detected coherent signal and promptly was provided with and shows Value Data when relevant this moment, if the short more 1. key of pressing, 1. single-chip microcomputer detects push button signalling and only continues in a special time, if currently demonstrate for beat demonstration halted state promptly begins the beat that 2-3 claps; For another example, under the beat presentation state, change the semiquaver that beat that 2-3 claps is illustrated as monophonic and show bat: shortly one part is set to semiquaver by 5. key, longly again be set to rest (promptly two parts are mute) by 5. key two parts, single-chip microcomputer detects coherent signal and promptly is provided with and demonstrates the semiquaver of a part and the rest of two parts at this moment, single-chip microcomputer is provided with the pronunciation of the tritone pronunciation of an ongoing part being changed into semiquaver simultaneously, and it is promptly mute that rest is changed in the quaver pronunciation of ongoing two parts.

Single-chip microcomputer scans after push-button unit has signal, analyze the address of definite button and the time length of button, according to present mode state, the corresponding control function of startup, under the metronome pattern 1. the key weak point press, single-chip microcomputer starts the beat demonstration by interlock circuit under beat demonstration halted state, then stop the beat demonstration in the beat demonstration is carried out; Long under the metronome pattern by 1. button, if this moment, beat sound-calibrator was in closed condition, single-chip microcomputer opening power then, Power-On Self-Test; If this moment, beat sound-calibrator was in running order, then the single-chip microcomputer powered-down directly enters the dormancy holding state; If (as 5 minutes) single-chip microcomputer does not scan any push button signalling in the certain hour, then enter the dormancy holding state.

Above example just describes button of the present invention, is not kind and quantity and the corresponding function that limits button in the push-button unit of the present invention, can adopt different button designs to finish identical functions fully.

All parameters of the present invention all comprise the parameter of an acquiescence, and these parameters are parameters the most frequently used in the optional parameter, to make things convenient for user's use.Electronic beat sound-calibrator of the present invention can comprise a RESET function, can make whole parameters recover back default parameters.

It should be noted last that: above embodiment is the unrestricted technical scheme of the present invention in order to explanation only, although the present invention is had been described in detail with reference to the foregoing description, those of ordinary skill in the art is to be understood that: still can make amendment or be equal to replacement the present invention, and not breaking away from any modification or partial replacement of the spirit and scope of the present invention, it all should be encompassed in the middle of the claim scope of the present invention.

Claims

1, a kind of electronic beat sound-calibrator comprises: casing, LCD display, indicating member, push-button unit, microphone and loudspeaker;

It is characterized in that: also comprise control module, described control module comprises: central processing unit, LCD display circuit, indicating circuit, key circuit, sound receiving processing circuit and audio output circuit;

Can enter the CALIBRATION pattern by push-button unit; Under this pattern, central processing unit is measured the height of sound import, the control indicating member by with standard pronunciation higher/on the low side how much indicate pitch, sound is low or accuracy in pitch, control LCD display display status information;

The status information that described LCD display shows comprises the pitch status information;

Described relevant pitch status information comprises the twelve-tone equal temperament musical alphabet of all sharps and flat, that is: " C, #C, bD, D, #D, bE, E, F, #F, bG, G, #G, bA, A, #A, bB, B ";

Can enter the metronome pattern by push-button unit, under this pattern, the central processing unit output audio signal drives loudspeaker output beat prompt tone to audio output circuit, controls indicating member indication beat simultaneously, and by the LCD display display status information;

Described beat prompt tone is the inverted beat prompt tone of sound intensity, and the inverted beat prompt tone of so-called sound intensity is meant that the frequency of corresponding beat prompt tone is low when demonstration during strong beat, and when demonstrating non-strong beat, the frequency height of corresponding beat prompt tone;

The beat demonstration of demonstration of beat that described beat prompt tone is an alliteration portion or multi part, the beat demonstration of so-called alliteration portion comprises the beat demonstration that 2-3 claps, 2-4 claps.

2, electronic beat sound-calibrator according to claim 1 is characterized in that: the indication point of described indicating member is light emitting diode or the miniature bulb that is installed on the machine shell panel;

Described indicating circuit comprises two groups of triodes, every group on these two groups of triodes are got light emitting diode or the miniature bulb that indicating member on the casing is all controlled in any one combination of one, and central processing unit is controlled light emitting diode or miniature bulb switch by the conducting of controlling these two groups of triodes;

Described central processing unit comprises single-chip microcomputer and accessory circuit thereof, the key circuit connecting circuit links to each other with the control port of single-chip microcomputer, the output of sound receiving processing circuit is connected with input of single chip, the control output end mouth of single-chip microcomputer is connected to indicating circuit, control the luminous of light emitting diode or miniature bulb, the audio output port of single-chip microcomputer is connected to audio output circuit;

Described LCD display unit comprises the LCD display chip, and the SEG output port of single-chip microcomputer links to each other with COM port with the SEG of LCD display chip respectively with the COM output port, to LCD display chip transmitting control commands and the information that needs to show; The output of LCD display chip is connected to LCD display.

3, a kind of electronic beat sound-calibrator comprises: casing, LCD display, push-button unit, microphone and loudspeaker;

It is characterized in that: also comprise control module, described control module comprises: central processing unit, LCD display circuit, key circuit, sound receiving processing circuit and audio output circuit;

Can enter the CALIBRATION pattern by push-button unit, under this pattern, central processing unit is measured the height of sound import, the indicating member of control LCD display by with standard pronunciation higher/on the low side how much indicate pitch, sound is low or accuracy in pitch; Control LCD display display status information;

Can enter the metronome pattern by push-button unit, under this pattern, the central processing unit output audio signal drives loudspeaker output beat prompt tone to audio output circuit, the indicating member of controlling LCD display simultaneously is by the indication beat, and by the LCD display display status information.

4, electronic beat sound-calibrator according to claim 3, it is characterized in that: described central processing unit comprises single-chip microcomputer and accessory circuit thereof, the key circuit connecting circuit links to each other with the control port of single-chip microcomputer, and the output of sound receiving processing circuit is connected with input of single chip; The audio output port of single-chip microcomputer is connected to audio output circuit;

Described LCD display unit comprises the LCD display chip, and the SEG output port of single-chip microcomputer links to each other with COM port with the SEG of LCD display chip respectively with the COM output port, and the output of LCD display chip is connected on the LCD display; The LCD display chip receives the control command of single-chip microcomputer output, the liquid crystal display section of the indicating member on the control LCD display is indicated beat or pitch, sound is low and accuracy in pitch, the LCD display chip receives needing display message and controlling display command of single-chip microcomputer output, and information is outputed on the LCD display.

5, according to the arbitrary described electronic beat sound-calibrator of claim 1-4, it is characterized in that: described indicating member is vertical indicating member, and all the arrangement mode of indication point is vertically to arrange; Vertically indicating member is indicated beat in the following way:

When vertically partly clapping before the indicating member indication, cooperate with the beat prompt tone that loudspeaker sends, control module is controlled all or part of indication point and is entered indicating status in proper order from top to bottom, and each has at least an indication point to be in indicating status constantly; Before half clap when finishing, making in whole indication points, the indication point of below enters indicating status;

When vertically indicating member is indicated later half bat, cooperates with the beat prompt tone that loudspeaker sends, control module is controlled all or part of indication point from the indication point of below, enters indicating status from the bottom to top in proper order; When later half bat finishes, make corresponding last indication point enter indicating status;

When the demonstration strong beat, all scopes that enter the indication point of indicating status are whole indication points; When the demonstration weak beat, all scopes that enter the indication point of indicating status are equal to or less than 1/2nd of whole indication points;

Described vertical indicating member comprises an instructions of the Central Committee point, and the indication point of some is respectively arranged in the above and below of instructions of the Central Committee point; Vertically indicating member is indicated pitch in the following way, sound is low or accuracy in pitch:

In the tuner process, if sound import is accurate, vertically indicating member instructions of the Central Committee point enters indicating status, and remaining indication point keeps non-indicating status; If sound import is higher/some units on the low side, instructions of the Central Committee point top/below enters indicating status from/the indication point that units on the low side is identical higher with sound of central indication point number, and remaining indication point keeps non-indicating status.

6, according to the arbitrary described electronic beat sound-calibrator of claim 1-4, it is characterized in that: described sound receiving processing circuit and audio output circuit can adopt a public dual-channel headphone jack;

The common port of described dual-channel headphone jack connects ground wire, and a circuit path connects microphone, and another circuit path connects loudspeaker; Under the CALIBRATION state, when inserting acoustic pickup, connect the circuit path meeting automatic cutout of microphone; Under the metronome state, when inserting earphone, connect the circuit path meeting automatic cutout of loudspeaker, realize the function of two kinds of jacks.

7, according to the arbitrary described electronic beat sound-calibrator of claim 1-4, it is characterized in that: described beat prompt tone comprises that simulation Chinese percussion instrument sound, voice counts the multi part beat voice prompt of the compound voice of bat sound and different prompt tones;

Described multi part beat voice prompt is counted bat sound and simulation Chinese percussion instrument sound and voice by different simulation Chinese percussion instrument sound, different voice and is counted the compound voice that bat sound makes up and form;

Described audio output circuit comprises a speech chip, is used to store the beat voice prompt;

Described speech chip links to each other with single-chip microcomputer, receive the control command of single-chip microcomputer, the required beat prompt tone of requirement output by control command, wave circuit and amplifying circuit after filtration again, from the beat voice prompt of loudspeaker output appointment, the LCD display of central processing unit control simultaneously circuit demonstrates corresponding duration note symbol.

8, a kind of control method of electronic beat sound-calibrator is characterized in that: control in according to the arbitrary electronic beat sound-calibrator among the claim 1-7, comprise the steps:

Step 1, start, system initialization;

9, the control method of electronic beat sound-calibrator according to claim 8 is characterized in that: described step 3 specifically comprises:

Step 30, show default information by LCD display;

10, the control method of electronic beat sound-calibrator according to claim 8 is characterized in that: described step 4 comprises the steps:

Step 40, show default information by LCD display;

Step 43, execution in step 41.