CN201853474U - Automatic tuning device for pianos - Google Patents
Automatic tuning device for pianos Download PDFInfo
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- CN201853474U CN201853474U CN2010201183933U CN201020118393U CN201853474U CN 201853474 U CN201853474 U CN 201853474U CN 2010201183933 U CN2010201183933 U CN 2010201183933U CN 201020118393 U CN201020118393 U CN 201020118393U CN 201853474 U CN201853474 U CN 201853474U
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Abstract
The utility model relates to the technical field of pianos and discloses an automatic tuning device for the pianos, comprising a piano body and an automatic tuning device. The automatic tuning device for the pianos is characterized in that the automatic tuning device comprises a voice frequency input device and a filter, wherein the voice frequency input device is connected with the filter, ultraharmonics in voice frequency signal sound waves from the voice frequency input device is filtered through the filter connected with a wave form amplifier, and wave forms filtered through the filter are amplified through the wave form amplifier connected with a waveform shaping circuit; and shaped through the waveform shaping circuit, the sound waves are inputted into a central processing unit, the frequency of the sound waves is processed through the central processing unit according to a standard frequency, and a drive circuit is controlled through the central processing unit so as to drive an adjusting mechanism of the automatic tuning device. The automatic tuning device for the pianos can realize high tuning accuracy as well as full automation of the entire turning process.
Description
Technical field
The utility model relates to the technical field of piano, specially refers to the technical field of piano tuning aspect.
Background technology
Early stage adjusting piano is that piano tuner preeminent by hearing, that the music attainment is very high finishes the piano tuning.But along with popularizing of piano, and the piano tuner's that hearing is preeminent, the music attainment is very high quantity seldom, now just has the not high piano tuner of some quality to utilize piano tuning instrument to regulate.
China Patent No. is: 97123257.1 disclose a kind of temperament standard generator for piano, when this generator is used for piano tuning, detection also shows by the sound frequency of each key correspondence of tuning piano, while display standard voice frequency, compare with the standard pronunciation frequency, make the judgement higher or on the low side of piano musical note, and make and regulate the tight or loose prompting of string, people regulate the frequency of piano according to the prompting of this speciogenesis device.This piano tuning instrument is actually a kind of sound-frequency measuring meter device, and the frequency that the piano tuner regulates piano remains staff and regulates with tool wrench.The piano tuner that quality is not high just is difficult to piano is transferred to best state.And the precision of tuning is not high.
The utility model content
The utility model purpose aims to provide the method for automatic tuning device of piano and automatic tuning thereof, can realize the tuning high precision, and simultaneously whole tuning process realizes full-automatic.
For achieving the above object, the technical solution adopted in the utility model is: the automatic tuning device of piano, comprise piano body and automatic tuning device, described automatic tuning device comprises voice input device, wave filter, voice input device is connected with wave filter, the sound signal sound wave of voice input device ripple device after filtration filters higher hamonic wave, wave filter is connected with the waveform amplifier, described waveform amplifier is used to amplify the waveform after described wave filter filters, the waveform amplifier is connected with waveform integer circuit, sound wave is input to central processing unit later on through waveform integer circuit integer, central processing unit is handled frequency of sound wave according to standard frequency, central processing unit control Driver Circuit, driving circuit drive the governor motion of described automatic tuning device.
The automatic tuning device of described piano, the described governor motion of the automatic tuning device of this piano adopts stepper motor, mechanical hand and speed reduction gearing, and stepper motor and speed reduction gearing drive mechanical hand and rotate.
The automatic tuning device of described piano, the described governor motion of the automatic tuning device of this piano adopts reducing motor and mechanical hand.
The automatic tuning device of described piano, the described central processing unit of the automatic tuning device of this piano also connects the LCD display panel, and the frequency of sound wave that central processing unit is measured is presented on the LCD display panel.
The utility model beneficial effect
Use the high-accuracy mechanical arm of industrial computer new and high technology control, substitute the pitch that existing staff is regulated piano.Realize that with microphone, amplifier, wave filter, industrial computer the superhigh precision frequency measurement replaces people's ear audition.And the amount that can should regulate with industrial COMPUTER CALCULATION, thereby control the tuning that high-accuracy mechanical hand is finished piano.
Can realize the tuning high precision, simultaneously whole tuning process realizes full-automatic.Available trained workman substitutes the piano tuner that hearing is preeminent, the music attainment is very high and reaches the effect of good adjusting piano.Remedy the piano tuner's that hearing is preeminent, the music attainment is very high deficiency.It is short that computer control piano tuning mechanical hand is finished the time of piano tuning, can improve the efficient of piano tuning.
Description of drawings
The schematic configuration diagram of the automatic tuning device of the automatic tuning piano of Fig. 1
Embodiment
Below in conjunction with drawings and Examples the utility model is further described.
Automatically the tuning piano comprises the piano body, and the present invention is fit to the piano of any style, and piano is everybody common practise now, and the tuning of former piano all is a kind of very work of specialty.Realized to these innovation and creation the automatic tuning of piano, overall process all is full-automatic.
As shown in Figure 1, the automatic tuning device of piano is equipped with automatic tuning device on piano, and the piano that described piano can any style is installed this automatic tuning device on the piano of style arbitrarily.Automatically tuning device comprises voice input device 1, wave filter 11, waveform amplifier 2, waveform shaping circuit 3, central processing unit 9, power supply 10, driving circuit 4, key panel 7, LCD display panel 8, stepper motor 5, reducing motor 6 compositions such as grade, voice input device 1 is connected with wave filter 11, described voice input device 1 can be general microphone or other voice input devices, all voice input devices have been comprised, voice input device 1 can receive the acoustic signals of the sound of piano button, the acoustic signals that voice input device receives is input in the wave filter again, described wave filter is the instrument that can filter higher hamonic wave, sound wave filters higher hamonic wave through wave filter, wave filter 11 is connected with waveform amplifier 2, sound wave amplifies the waveform of sound wave through waveform amplifier 2, waveform amplifier 2 is connected with waveform integer circuit 3, sound wave becomes the ripple of certain hour section through integer, be input to central processing unit 9, carry out computing by central processing unit 9, calculate the frequency of this sound wave, storage chip has the standard frequency of piano, central processing unit compares the measured frequency of sound wave that comes out with corresponding frequency, central processing unit judges whether measured frequency is identical with standard frequency.Central processing unit 9 is connected with LCD display panel 8, central processing unit 9 measured frequency data can show on LCD display panel 8, central processing unit 9 is connected with driving circuit 4, and central processing unit 9 is being controlled driving circuit 4, and driving circuit 4 drives piano tuning governor motion.This governor motion has dual mode, and a kind of is that the described governor motion of the automatic tuning device of piano adopts stepper motor, mechanical hand and speed reduction gearing, and stepper motor 5 and speed reduction gearing drive mechanical hand and rotate.A kind of outside two is that the described governor motion of the automatic tuning device of piano adopts reducing motor 6 and mechanical hand.
Sound signal is input to the waveform amplifier through Mike amplifies, and wave filter is eliminated higher hamonic wave.Be sent to again in the another one comparer and produce square wave, be sent to central processing unit.Detect the waveform in a clock period in central processing unit inside, compare, show with the LCD display panel with the frequency of standard.Adjust time that rotates and reverse of motor at central processing unit internal control storage chip, we compare automatically according to the data of measuring and normal data with single-chip microcomputer and control
Use the high-accuracy mechanical arm of industrial computer new and high technology control, substitute the pitch that existing staff is regulated piano.Realize that with microphone, amplifier, wave filter, industrial computer the superhigh precision frequency measurement replaces people's ear audition.And the amount that can should regulate with industrial COMPUTER CALCULATION, thereby control the tuning that high-accuracy mechanical hand is finished piano.
The automatic tuning device of piano, comprise piano body and automatic tuning device, described automatic tuning device comprises voice input device, wave filter, voice input device is connected with wave filter, the sound signal sound wave of voice input device ripple device after filtration filters higher hamonic wave, wave filter is connected with the waveform amplifier, described waveform amplifier is used to amplify the waveform after described wave filter filters, the waveform amplifier is connected with waveform integer circuit, sound wave is input to central processing unit later on through waveform integer circuit integer, central processing unit is handled frequency of sound wave according to standard frequency, central processing unit control Driver Circuit, driving circuit drive the governor motion of described automatic tuning device.
The automatic tuning device of described piano, the described governor motion of the automatic tuning device of this piano adopts stepper motor, mechanical hand and speed reduction gearing, and stepper motor and speed reduction gearing drive mechanical hand and rotate.
The automatic tuning device of described piano, the described governor motion of the automatic tuning device of this piano adopts reducing motor and mechanical hand.
The automatic tuning device of described piano, the described central processing unit of the automatic tuning device of this piano also connects the LCD display panel, and the frequency of sound wave that central processing unit is measured is presented on the LCD display panel.
The method of the automatic tuning of piano, elder generation's voice input device receives the sound wave that piano sends, sound wave carries out filtering through wave filter, through the waveform amplifier described sound wave is amplified after the filtering, become square wave through amplifying with clamper, send central processing unit to carry out the measurement in high precision cycle square-wave signal and calculate frequency, storer has the standard frequency of 88 keyboards of piano, central processing unit compares survey frequency and standard frequency data and computing, calculate the direction and the angle of piano tuning, central processing unit is regulated according to the direction and the angle instruction driving circuit driving governor motion of piano tuning, after the adjusting, make piano to send frequency of sound wave the same with standard frequency, the automatic tuning of piano is finished.
The method of the automatic tuning of described piano, the described central processing unit of method of the automatic tuning of this piano is handled the output order that becomes stepper motor with direction and angle, outputs to voltage amplifier circuit from the IO port and amplifies, send power amplification circuit to carry out voltage amplification, drive stepping motor drive mechanical hand transmission again.
The method of the automatic tuning of described piano, the method of the automatic tuning of this piano compares the frequency of the current sound that measures and the audio frequency that sets standard in central authorities handle, deduct the frequency of measuring sound with the standard pronunciation frequency, if obtain be on the occasion of, explanation is than the pitch of standard audio than this button, and single-chip microcomputer will be turned right by automatic control motor so, otherwise, explanation is lower than the sound of this button than standard audio, and single-chip microcomputer will turn left by automatic control motor so.
The method of the automatic tuning of described piano, the method central processing unit of the automatic tuning of this piano is in the time that rotates and reverse of adjusting motor, the time that rotates and reverse that we compare automatic control motor with single-chip microcomputer according to the data of measuring and normal data, make string reach our required vibration frequency, adjustment is finished.
Sound signal is input to the waveform amplifier through Mike amplifies, and wave filter is eliminated higher hamonic wave.Be sent to again in the another one comparer and produce square wave, be sent to central processing unit.Detect the waveform in a clock period in central processing unit inside, compare, show with the LCD display panel with the frequency of standard.Adjust the time that rotates and reverse of motor at central processing unit internal control storage chip, the time that rotates and reverse that we compare automatic control motor with single-chip microcomputer according to the data of measuring and normal data, make string reach our required vibration frequency, adjustment is finished.
During initialization, piano enters the normal articulation state, and LCD is shown as 00.When pressing first button, LCD first row shows the frequency of the standard pronunciation of first button, and second row shows the frequency of the current sound that measures.In single-chip microcomputer, the frequency of the current sound that measures and the audio frequency that sets standard are compared simultaneously.Deduct the frequency of measuring sound with the standard pronunciation frequency.If obtain be on the occasion of, illustrate that than the pitch of standard audio single-chip microcomputer will automatic control motor be turned right so than this button.Otherwise, illustrate lowlyer than the sound of this button than standard audio, single-chip microcomputer will automatic control motor turns left so.Control the rotation degree with golden section point on the algorithm, the error of knowing 2 frequencies finishes the adjustment of first key in the millionth scope of our regulation.And the like measurement and adjust other key, up to the frequency adjustment of finishing 88 piano keies.Press output key and just can hear that we debug the audio frequency of the desirable piano in back.
Claims (4)
1. the automatic tuning device of piano, comprise piano body and automatic tuning device, it is characterized in that described automatic tuning device comprises voice input device, wave filter, described voice input device is connected with wave filter, the sound signal sound wave of described voice input device ripple device after filtration filters higher hamonic wave, described wave filter is connected with the waveform amplifier, described waveform amplifier is used to amplify the waveform after described wave filter filters, described waveform amplifier is connected with waveform integer circuit, sound wave is input to central processing unit later on through waveform integer circuit integer, described central processing unit is handled frequency of sound wave according to standard frequency, described central processing unit control Driver Circuit, described driving circuit drives the governor motion of described automatic tuning device.
2. according to the automatic tuning device of the described piano of claim 1, it is characterized in that the described governor motion of the automatic tuning device of this piano adopts stepper motor, mechanical hand and speed reduction gearing, stepper motor and speed reduction gearing drive mechanical hand and rotate.
3. according to the automatic tuning device of the described piano of claim 1, it is characterized in that the described governor motion of the automatic tuning device of this piano adopts reducing motor and mechanical hand.
4. according to the automatic tuning device of the described piano of claim 1, it is characterized in that the described central processing unit of the automatic tuning device of this piano also connects the LCD display panel, the frequency of sound wave that central processing unit is measured is presented on the LCD display panel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201183933U CN201853474U (en) | 2010-02-09 | 2010-02-09 | Automatic tuning device for pianos |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201183933U CN201853474U (en) | 2010-02-09 | 2010-02-09 | Automatic tuning device for pianos |
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| CN201853474U true CN201853474U (en) | 2011-06-01 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2010201183933U Expired - Fee Related CN201853474U (en) | 2010-02-09 | 2010-02-09 | Automatic tuning device for pianos |
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| CN (1) | CN201853474U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103903597A (en) * | 2014-03-22 | 2014-07-02 | 哈尔滨工程大学 | Piano electronic tuning method based on machine vision and device |
-
2010
- 2010-02-09 CN CN2010201183933U patent/CN201853474U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103903597A (en) * | 2014-03-22 | 2014-07-02 | 哈尔滨工程大学 | Piano electronic tuning method based on machine vision and device |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110601 Termination date: 20130209 |
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| CF01 | Termination of patent right due to non-payment of annual fee |