CN112509537A - Novel piano full-intelligent acquisition method and acquisition system - Google Patents
Novel piano full-intelligent acquisition method and acquisition system Download PDFInfo
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- CN112509537A CN112509537A CN202011418602.0A CN202011418602A CN112509537A CN 112509537 A CN112509537 A CN 112509537A CN 202011418602 A CN202011418602 A CN 202011418602A CN 112509537 A CN112509537 A CN 112509537A
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- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10H—ELECTROPHONIC MUSICAL INSTRUMENTS; INSTRUMENTS IN WHICH THE TONES ARE GENERATED BY ELECTROMECHANICAL MEANS OR ELECTRONIC GENERATORS, OR IN WHICH THE TONES ARE SYNTHESISED FROM A DATA STORE
- G10H1/00—Details of electrophonic musical instruments
- G10H1/0008—Associated control or indicating means
- G10H1/0016—Means for indicating which keys, frets or strings are to be actuated, e.g. using lights or leds
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- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10H—ELECTROPHONIC MUSICAL INSTRUMENTS; INSTRUMENTS IN WHICH THE TONES ARE GENERATED BY ELECTROMECHANICAL MEANS OR ELECTRONIC GENERATORS, OR IN WHICH THE TONES ARE SYNTHESISED FROM A DATA STORE
- G10H1/00—Details of electrophonic musical instruments
- G10H1/32—Constructional details
- G10H1/34—Switch arrangements, e.g. keyboards or mechanical switches specially adapted for electrophonic musical instruments
- G10H1/344—Structural association with individual keys
Abstract
The invention discloses a novel piano full-intelligent acquisition method and system, wherein the method comprises the following steps: s1, knocking the piano keys by adopting different grades of dynamics, collecting analog signal information of each key by using a sensor, and converting the collected analog signal information into corresponding digital signal information through a digital-to-analog converter; s2, fitting a key depression force value formula according to the converted digital signal information of each key in the step S1; s3, acquiring analog signal information of each key during piano playing in real time by using the sensor, converting the acquired analog signal information into digital signal information through the digital-to-analog converter, and calculating the pressing playing force of each key during the piano playing in real time according to the key pressing force value formula fitted in the step S2 to realize automatic piano playing, so that intelligent acquisition of key information during piano playing is realized. The invention has the characteristics of simple structure and good reduction effect.
Description
Technical Field
The invention relates to the technical field of pianos, in particular to a novel piano full-intelligent acquisition method and system.
Background
In the current society, with the rapid development of economy, more and more people begin to pursue more elegant spiritual life, and learning pianos becomes the first choice for most people to be wonderful. The piano is composed of a large amount of wood, is greatly influenced by the change of temperature and humidity environmental factors, and the aging and the abrasion of the piano can be accelerated by using the piano with inaccurate temperament for a long time, and certain deviation can also be caused to the auditory system of human ears. Therefore, tuning the piano regularly is a key factor in ensuring the sound quality of the piano. With the popularization of piano usage, people pay more and more attention to piano tuning.
At present, the intelligent piano on the market detects and monitors the key pressing force when the piano is played by using a mode of fixing Vabae threshold voltage, so that the restoration of the key pressing force when the automatic playing is realized, but the key restoration effect of the structure is not ideal, the structure also has the problems of difficult assembly and troublesome debugging, and the intelligent piano cannot be calibrated through automatic learning under the condition that the piano structure in the later stage is changed, so that the fault tolerance rate is low.
In view of this, it is an urgent technical problem to be solved by those skilled in the art to research a novel piano fully intelligent acquisition method and system with simple structure and good recovery effect.
Disclosure of Invention
The invention aims to provide a novel piano full-intelligent acquisition method and system, the method converts analog signal information of each key acquired by a sensor during playing of a dynamics piano with different grades into digital signal information through a digital-to-analog converter and fits a key pressing dynamics value formula, and then the key pressing dynamics value formula is utilized to restore the real-time piano playing of each key acquired by the sensor, so that the restoration during automatic playing is more real, and the piano full-intelligent acquisition method and system have the characteristics of simple structure and good restoration effect.
In order to solve the technical problem, the invention provides a novel piano fully-intelligent acquisition method, which comprises the following steps:
s1, knocking the piano keys by adopting different grades of dynamics, collecting analog signal information of each key by using a sensor, and converting the collected analog signal information into corresponding digital signal information through a digital-to-analog converter;
s2, fitting a key depression force value formula according to the converted digital signal information of each key in the step S1;
s3, acquiring analog signal information of each key during piano playing in real time by using the sensor, converting the acquired analog signal information into digital signal information through the digital-to-analog converter, and calculating the pressing playing force of each key during the piano playing in real time according to the key pressing force value formula fitted in the step S2 to realize automatic piano playing, so that intelligent acquisition of key information during piano playing is realized.
Preferably, the specific implementation manner of step S1 includes: the method comprises the steps of firstly installing a circuit board below piano keys, enabling the piano keys to correspond to sensors on the circuit board one by one, then knocking the piano keys by adopting different grades of dynamics, sensing stroke change analog signal information of the piano keys through the sensors, feeding the stroke change analog signal information back to a digital-to-analog converter, and finally converting the stroke change analog signal information of the piano keys into corresponding digital signal information through the digital-to-analog converter.
Preferably, the fitted key depression force value formula in step S2 is:
y＝kx+b (1)
in the formula (1), y represents a key depression force value, x represents digital signal information corresponding to a key stroke variation value acquired by a sensor, k represents a coefficient, and b represents a variable constant.
Preferably, the specific implementation manner of converting the stroke change analog signal information into the digital signal information by the digital-to-analog converter is as follows: firstly, the working voltage change values of the sensors are in one-to-one correspondence with the digital signal change values by utilizing the digital-to-analog converters, and then working voltage value signals corresponding to the stroke changes of the keys, which are sensed by the sensors when the keys of the piano are knocked, are converted into digital signals according to the corresponding relation between the working voltage change values of the sensors and the digital signal change values.
A novel piano fully intelligent acquisition system adopts the novel piano fully intelligent acquisition method to acquire the pressing information of each key on a piano, which comprises a circuit board, a sensor, a digital-to-analog converter and a signal processing chip, wherein the circuit board is arranged below keys of the piano, the circuit board is provided with sensors, a digital-to-analog converter and a signal processing chip, the sensors are located below the piano keys and correspond to the piano keys one by one and are used for collecting action state changes and pressing force of the piano keys during piano playing, the digital-to-analog converter is connected with the sensors and is used for receiving stroke change analog signal information of the piano keys and converting the stroke change analog signal information into digital signal information, and the signal processing chip is connected with the sensors and is used for receiving the digital signal information and calculating the pressing force corresponding to the piano keys according to the digital signal information.
Compared with the prior art, the invention collects the analog signal information of each key when the piano with different grades is played through the sensor and converts the analog signal information into the corresponding digital signal information through the digital-to-analog converter, thereby effectively solving the defects of difficult assembly and troublesome debugging.
Drawings
FIG. 1 is a flow chart of a novel piano fully intelligent acquisition method of the invention,
fig. 2 is a block diagram of the circuit board of the present invention.
In the figure: 1. the circuit board, 2, the sensor, 3, digital-to-analog converter, 4, signal processing chip.
Detailed Description
In order to make the technical solutions of the present invention better understood, the present invention is further described in detail below with reference to the accompanying drawings.
As shown in fig. 1, a novel piano full-intelligent acquisition method comprises the following steps:
s1, knocking piano keys by adopting different grades of dynamics, collecting analog signal information of each key by using the sensor 2, and converting the collected analog signal information into corresponding digital signal information through the digital-to-analog converter 3;
s2, fitting a key depression force value formula according to the converted digital signal information of each key in the step S1;
s3, acquiring analog signal information of each key during piano playing in real time by using the sensor 2, converting the acquired analog signal information into digital signal information through the digital-to-analog converter 3, and calculating the pressing playing force of each key during the piano playing in real time according to the key pressing force value formula fitted in the step S2 to realize automatic piano playing, so that intelligent acquisition of key information during piano playing is realized.
In the embodiment, the keys of the piano are firstly knocked by 127 grades of dynamics, the sensor 2 corresponding to each key is used for collecting analog signal information of the key, the digital-to-analog converter 3 is used for converting the collected analog signal information into corresponding digital signal information, then a key pressing force value formula is fitted according to the converted digital signal information, finally, the sensor 2 is used for collecting stroke change analog signal information of each key and converting the stroke change analog signal information into digital signal information when the real-time piano is played, and the pressing playing dynamics of each key during the real-time piano playing is calculated according to the fitted key pressing force value formula, so that the automatic playing of the piano can be realized according to the calculated pressing playing dynamics of each key.
The specific implementation manner of step S1 includes: firstly, a circuit board 1 is arranged below piano keys, the keys on the piano correspond to sensors 2 on the circuit board 1 one by one, then the piano keys are knocked by different grades of dynamics, stroke change analog signal information of the keys is sensed by the sensors 2 and fed back to a digital-to-analog converter 3, and finally the stroke change analog signal information of the keys of the piano is converted into corresponding digital signal information by the digital-to-analog converter 3.
In this embodiment, the quantity of sensor 2 and the quantity one-to-one of piano key and sensor 2 all arrange corresponding key under, when strikeing the piano key, sensor 2 can effectively sense the stroke variation value of corresponding key to can convert the analog signal information of the key stroke variation value that sensor 2 sensed into corresponding digital signal information through digital-to-analog converter 3, effectively solved the difficult problem of debugging with the difficult equipment among the current intelligent piano that adopts the fixed voltage detection mode.
Wherein the fitted key depression force value formula in step S2 is:
y＝kx+b (1)
in the formula (1), y represents a key depression force value, x represents digital signal information corresponding to a key stroke variation value collected by the sensor 2, k represents a coefficient, and b represents a variable constant.
In this embodiment, the key depression force value formula is a four-stage linear equation, analog signal information of each key of the piano keys struck by different levels of force is collected and converted into digital signal information, and then the obtained digital signal information is plotted in a coordinate system according to a relationship between the depression force value and the collected digital signal information, so that a coefficient k value and a variable constant b value of each stage in the four-stage linear equation are determined.
The specific implementation manner of converting the stroke change analog signal information into the digital signal information by the digital-to-analog converter 3 is as follows: firstly, the working voltage change values of the sensors 2 correspond to the digital signal change values one by using the digital-to-analog converters 3, and then working voltage value signals corresponding to the stroke changes of the keys, which are sensed by the sensors 2 when the keys of the piano are knocked, are converted into digital signals according to the corresponding relation between the working voltage change values of the sensors 2 and the digital signal change values.
In this embodiment, the working voltage variation range of the sensor 2 is 0-3.3V, the digital signal variation range is 0-4096, 0V corresponds to 0, 3.3V corresponds to 4096, and a one-to-one correspondence relationship between the working voltage variation of the sensor 2 and the digital signal variation is obtained, when the piano key dynamics is changed, the corresponding digital signal value is changed correspondingly, therefore, each key of the piano is played one by one with a fixed playing dynamics, and the sensor 2 is used to collect the stroke variation analog signal information of each key and convert the stroke variation analog signal information into digital signal information, and then the converted digital signal information is substituted into the key depression dynamics formula at this stage, i.e. the b value in the key depression dynamics formula at this stage can be calibrated, so that the final key depression dynamics formula meets different pianos, the purpose of automatic learning and calibration is achieved, the original piano in the later period changes structurally, fault tolerance can be completed through automatic learning function calibration, and the method has the advantage of high fault tolerance rate.
As shown in FIG. 2, a novel piano fully intelligent acquisition system adopts the novel piano fully intelligent acquisition method to acquire the depression information of each key on a piano, which comprises a circuit board 1, a sensor 2, a digital-to-analog converter 3 and a signal processing chip 4, wherein the circuit board 1 is arranged below keys of a piano, the circuit board 1 is provided with sensors 2, a digital-to-analog converter 3 and a signal processing chip 4, the sensors 2 are located below piano keys and correspond to the piano keys one by one for collecting action state changes and pressing force of the keys when the piano plays, the digital-to-analog converter 3 is connected with the sensors 2 and used for receiving stroke change analog signal information of the keys and converting the stroke change analog signal information into digital signal information, and the signal processing chip 4 is connected with the sensors 2 and used for receiving the digital signal information and calculating the pressing force corresponding to the keys of the piano according to the digital signal information.
In the embodiment, the acquisition system converts the stroke change analog signal information of the piano keys acquired by the sensor 2 into digital signal information by using the digital-to-analog converter 3, effectively overcomes the defects of difficult assembly and troublesome debugging of the existing intelligent piano adopting a fixed voltage mode, fits a key pressing force value formula according to the acquired digital signal information and through the signal processing chip 4, and calculates the pressing force corresponding to each key when the real-time piano is played according to the pressing force value formula, so that the accurate restoration of the keys when the piano is automatically played is realized.
The detailed description is given above to the novel piano fully-intelligent acquisition method and system provided by the invention. The principles and embodiments of the present invention are explained herein using specific examples, which are presented only to assist in understanding the core concepts of the present invention. It should be noted that, for those skilled in the art, it is possible to make various improvements and modifications to the present invention without departing from the principle of the present invention, and those improvements and modifications also fall within the scope of the claims of the present invention.
Claims (5)
1. A novel piano full-intelligent acquisition method is characterized by comprising the following steps:
s1, knocking the piano keys by adopting different grades of dynamics, collecting analog signal information of each key by using a sensor, and converting the collected analog signal information into corresponding digital signal information through a digital-to-analog converter;
s2, fitting a key depression force value formula according to the converted digital signal information of each key in the step S1;
s3, acquiring analog signal information of each key during piano playing in real time by using the sensor, converting the acquired analog signal information into digital signal information through the digital-to-analog converter, and calculating the pressing playing force of each key during the piano playing in real time according to the key pressing force value formula fitted in the step S2 to realize automatic piano playing, so that intelligent acquisition of key information during piano playing is realized.
2. The novel piano full-intelligent collection method according to claim 1, wherein the specific implementation manner of the step S1 includes: the method comprises the steps of firstly installing a circuit board below piano keys, enabling the piano keys to correspond to sensors on the circuit board one by one, then knocking the piano keys by adopting different grades of dynamics, sensing stroke change analog signal information of the piano keys through the sensors, feeding the stroke change analog signal information back to a digital-to-analog converter, and finally converting the stroke change analog signal information of the piano keys into corresponding digital signal information through the digital-to-analog converter.
3. The novel piano full-intelligent collection method according to claim 2, wherein the fitted key depression force value formula in the step S2 is:
y＝kx+b (1)
in the formula (1), y represents a key depression force value, x represents digital signal information corresponding to a key stroke variation value acquired by a sensor, k represents a coefficient, and b represents a variable constant.
4. A novel piano full-intelligent acquisition method as claimed in claim 3, wherein the specific implementation manner of converting stroke change analog signal information into digital signal information by said digital-to-analog converter is as follows: firstly, the working voltage change values of the sensors are in one-to-one correspondence with the digital signal change values by utilizing the digital-to-analog converters, and then working voltage value signals corresponding to the stroke changes of the keys, which are sensed by the sensors when the keys of the piano are knocked, are converted into digital signals according to the corresponding relation between the working voltage change values of the sensors and the digital signal change values.
5. A novel piano fully-intelligent acquisition system is characterized in that the novel piano fully-intelligent acquisition method of any one of claims 1-4 is adopted to acquire the pressing information of each key on a piano, which comprises a circuit board, a sensor, a digital-to-analog converter and a signal processing chip, wherein the circuit board is arranged below keys of the piano, the circuit board is provided with sensors, a digital-to-analog converter and a signal processing chip, the sensors are located below the piano keys and correspond to the piano keys one by one and are used for collecting action state changes and pressing force of the piano keys during piano playing, the digital-to-analog converter is connected with the sensors and is used for receiving stroke change analog signal information of the piano keys and converting the stroke change analog signal information into digital signal information, and the signal processing chip is connected with the sensors and is used for receiving the digital signal information and calculating the pressing force corresponding to the piano keys according to the digital signal information.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113192475A (en) * | 2021-04-27 | 2021-07-30 | 湖南卡罗德音乐集团有限公司 | Full-intelligent automatic force adjusting system and method for piano keys |
| CN113903367A (en) * | 2021-09-30 | 2022-01-07 | 湖南卡罗德音乐集团有限公司 | Acquisition and restoration method based on piano full-intelligent system |
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Effective date of registration: 20220125 Address after: 410000 Building 2, Houhu business center, CSCEC smart Industrial Park, No. 50, Jinjiang Road, Yuelu street, Yuelu District, Changsha City, Hunan Province Applicant after: Hunan karod Piano Co.,Ltd. Address before: 1109, building C3, Lugu enterprise Plaza, 27 Wenxuan Road, high tech Development Zone, Changsha, Hunan 410000 Applicant before: Hunan Carrod Music Group Co.,Ltd. |
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