CN109308902A - A kind of piano tone tuning system and method - Google Patents
A kind of piano tone tuning system and method Download PDFInfo
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- CN109308902A CN109308902A CN201811272866.2A CN201811272866A CN109308902A CN 109308902 A CN109308902 A CN 109308902A CN 201811272866 A CN201811272866 A CN 201811272866A CN 109308902 A CN109308902 A CN 109308902A
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- 238000000034 method Methods 0.000 title claims abstract description 26
- 238000001228 spectrum Methods 0.000 claims abstract description 39
- 238000010183 spectrum analysis Methods 0.000 claims abstract description 6
- 238000009432 framing Methods 0.000 claims description 6
- 238000001514 detection method Methods 0.000 claims description 5
- 238000005070 sampling Methods 0.000 claims description 5
- 238000005516 engineering process Methods 0.000 description 6
- 238000010586 diagram Methods 0.000 description 3
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- 210000005252 bulbus oculi Anatomy 0.000 description 2
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- 238000005299 abrasion Methods 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
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Classifications
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- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10C—PIANOS, HARPSICHORDS, SPINETS OR SIMILAR STRINGED MUSICAL INSTRUMENTS WITH ONE OR MORE KEYBOARDS
- G10C9/00—Methods, tools or materials specially adapted for the manufacture or maintenance of musical instruments covered by this subclass
-
- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10L—SPEECH ANALYSIS TECHNIQUES OR SPEECH SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING TECHNIQUES; SPEECH OR AUDIO CODING OR DECODING
- G10L19/00—Speech or audio signals analysis-synthesis techniques for redundancy reduction, e.g. in vocoders; Coding or decoding of speech or audio signals, using source filter models or psychoacoustic analysis
- G10L19/008—Multichannel audio signal coding or decoding using interchannel correlation to reduce redundancy, e.g. joint-stereo, intensity-coding or matrixing
-
- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10L—SPEECH ANALYSIS TECHNIQUES OR SPEECH SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING TECHNIQUES; SPEECH OR AUDIO CODING OR DECODING
- G10L19/00—Speech or audio signals analysis-synthesis techniques for redundancy reduction, e.g. in vocoders; Coding or decoding of speech or audio signals, using source filter models or psychoacoustic analysis
- G10L19/04—Speech or audio signals analysis-synthesis techniques for redundancy reduction, e.g. in vocoders; Coding or decoding of speech or audio signals, using source filter models or psychoacoustic analysis using predictive techniques
- G10L19/16—Vocoder architecture
-
- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10L—SPEECH ANALYSIS TECHNIQUES OR SPEECH SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING TECHNIQUES; SPEECH OR AUDIO CODING OR DECODING
- G10L21/00—Speech or voice signal processing techniques to produce another audible or non-audible signal, e.g. visual or tactile, in order to modify its quality or its intelligibility
- G10L21/02—Speech enhancement, e.g. noise reduction or echo cancellation
- G10L21/0208—Noise filtering
-
- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10L—SPEECH ANALYSIS TECHNIQUES OR SPEECH SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING TECHNIQUES; SPEECH OR AUDIO CODING OR DECODING
- G10L25/00—Speech or voice analysis techniques not restricted to a single one of groups G10L15/00 - G10L21/00
- G10L25/03—Speech or voice analysis techniques not restricted to a single one of groups G10L15/00 - G10L21/00 characterised by the type of extracted parameters
- G10L25/18—Speech or voice analysis techniques not restricted to a single one of groups G10L15/00 - G10L21/00 characterised by the type of extracted parameters the extracted parameters being spectral information of each sub-band
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Computational Linguistics (AREA)
- Health & Medical Sciences (AREA)
- Audiology, Speech & Language Pathology (AREA)
- Human Computer Interaction (AREA)
- Mathematical Physics (AREA)
- Quality & Reliability (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Auxiliary Devices For Music (AREA)
Abstract
The present invention provides a kind of piano tone tuning system, apply in electronic device, the electronic device includes microphone and display screen, the display screen is fixed by bracket, the bracket is connected with piano, the system comprises display module, memory module, audio collection module, audio coding module, comparison of wave shape module and calculates output module；The present invention provides a kind of method of piano tone tuning, comprising steps of system starts, standard audio files needed for selecting frequency spectrum indication range and calibration；Audio collection module receives the voice signal that piano string issues, and sends it to audio coding module；The voice signal received is carried out spectrum analysis by audio coding module, is obtained voice signal frequency spectrum, is drawn out corresponding adjusting peak curve to default fixed frequency point peak value；Acquisition standard audio files frequency spectrum, the corresponding default fixed frequency point peak value of acquisition draw out corresponding standard musical note peak curve.
Description
Technical field
The present invention relates to piano tuning technical fields, and in particular to a kind of piano tone tuning system and method.
Background technique
Piano is a kind of keyboard instrument, pulls hammer to beat string with key.Since 18 end of the centurys, in Europe and beauty
State, piano are always most important family's keyboard instrument.Piano rises in Europe, and 18 beginnings of the century, Italian Chris is more
A kind of keyboard musical instrument of similar modern piano of Fo Li invention, has more than 300 years history so far.It is opened from 16 end of the centurys
Begin, harpsichord and clavichord both keyboard instruments gradually come into one's own, and until 18 end of the centurys, are just replaced by piano.
Piano was first appeared in 1709, had been a kind of complex and costly musical instrument at that time, only royal just to have an opportunity to connect with noble
It contacts.The sound of some very reputable musicians such as John's Sebastian Bach and inappreciation piano at the beginning
Color.But half a century is only spent, piano just becomes more and more popular.As Mozart (Mozart), Brahms (Bradley nurse
This) and liszt (Liszt) these great creativities musician put into piano bosom after, enthusiasm be just instantaneously detonated.
The rise of industrial age derives a newly-emerged social stratum --- and middle class, piano have a great vogue in this group.Its
Intermediate cam piano is the symbol of social status, is generally used in orchestra, and upright piano is then more by the welcome of family.
It is learned in today's society with the rapid development of economy, more and more people start to pursue more graceful cultural life
Practising piano becomes the first choice that most people is cultivated one's taste.Piano is made of largely wooden, is changed by temperature, humidity environment factor
It is affected, the aging and abrasion of piano can be accelerated using the piano that musical note is not allowed for a long time, human auditory system can also be made
At certain deviation.Therefore, the key factor that temperament is to ensure that piano sound quality periodically is carried out to piano.With piano use it is big
Crowdization, people also enhance the attention of piano tuning further.
Current piano tone tuning technology is mainly manually tuning, and the requirement to tuning personnel is very high, needs to have very clever
Quick piano tone recognition capability.Although existing associated machines also have very much, since technology is immature, for signal
Analysis and the display of result require by other specialized equipments, and artificial tuning is also biased into practical application.Because of people
Work tuning is mainly that tuning personnel foundation human ear hears that piano pronunciation adjusts qin to judge the accuracy in pitch of piano, then with tuning tool
String.This whole process is not only troublesome, very high to professional's requirement, and accuracy is not high.With the development of the times, internet
It is more more and more universal, therefore a kind of tuning system and method for piano is needed on the market, the view of user can be better met
Feel and the experience in tactile.
Summary of the invention
In view of the deficiencies of the prior art, the present invention provides a kind of piano tone tuning system and method, can make piano musical note tune
Section process is more humanized, and superior adjusting sound quality is provided while convenient adjusting, effectively realizes system and device and replaces adjusting
Lawyer carries out piano tuning.
In order to achieve the above object, the present invention is achieved by the following technical programs:
A kind of piano tone tuning system, applies in electronic device, and the electronic device includes microphone and display screen, described
Display screen is fixed by bracket, and the bracket is connected with piano, the system comprises:
Display module, for connecting display screen, drive the display screen show audible spectrum waveform, musical note adjustment state and
Command prompt；
Memory module, for storing standard audio files；
Audio collection module, for receiving the voice signal of piano string sending by microphone and sending it to audio
Coding module；
Audio coding module for receiving audio collection module voice signal obtained, and handles the voice signal,
Obtain the spectrum information of voice signal；
Comparison of wave shape module, spectrum information and standard audio files for that will obtain voice signal carry out data and waveform
Comparison；
Output module is calculated, for calculating comparing result, generates adjustment state and command prompt.
Further, the display module includes:
Waveform display sub-module, for showing the spectrum waveform of the voice signal spectrum waveform and standard audio file；
State instruction submodule, for showing musical note adjustment state and command prompt.
Further, the audio coding module includes:
Audio defeat submodule neutralizes noise, for generating the reversed sound wave equal with ambient noise to obtained
Voice signal carries out noise reduction；
Audio pre-processes submodule, for carrying out preemphasis, framing and windowing operation to voice signal obtained；
Waveform sampling submodule forms sampled signal waveform for obtaining the spectrum information of voice signal.
Further, the system comprises wireless network modules, for being wirelessly connected internet and passing through the Internet download
Standard audio files, while being directed into the memory module.
Further, the display screen is electronic ink screen, including touch screen and control button.
A kind of method of piano tone tuning, comprising steps of
Step 1: system starts, standard audio files needed for selecting frequency spectrum indication range and calibration；
Step 2: being prompted according to display screen, string is pressed repeatedly and corresponds to key, audio collection module receives piano string hair
Voice signal out, and send it to audio coding module；
Step 3: audio coding module by the voice signal received carry out spectrum analysis, including denoising, preemphasis, plus
Window, framing and end-point detection obtain voice signal frequency spectrum, and it is bent to draw out corresponding adjusting peak value to default fixed frequency point peak value
Line；
Step 4, obtains standard audio files frequency spectrum, and the corresponding default fixed frequency point peak value of acquisition draws out corresponding mark
Quasi- musical note peak curve；
Step 5: the spectrum information for obtaining voice signal and standard audio files are carried out data and comparison of wave shape, obtain
Optimum fit curve, as best musical note state；
Step 6: controlling tuning rod according to best musical note state is adjusted to corresponding state.
Compared with prior art, the invention has the following advantages:
The present invention can receive the voice signal of piano string sending by audio collection module, and pass through audio coding
The voice signal received is carried out spectrum analysis by module, obtains voice signal frequency spectrum, and draw to default fixed frequency point peak value
Produce corresponding adjusting peak curve；Signal is denoised, preemphasis, adding window, framing pretreatment related to end-point detection, energy
Collected piano sound is enough set to be more conducive to the analysis of signal；
The present invention be equipped with wireless network module, can download online obtain standard audio files, pass through audio pretreatment son
The spectrum information of voice signal and standard audio files can be carried out data and waveform pair by module and waveform sampling submodule
Than, optimum fit curve, as best musical note state are obtained, and tuning rod is controlled according to best musical note state and is adjusted to corresponding shape
Piano tuning can be realized in state；The present invention simulates human ear system by the way of spectrum curve fitting, will adjust peak curve
Approximate match is realized with standard musical note peak curve, and then adjusts out good piano musical note；
The present invention interacts manipulation by display screen and user, so that adjustment process is more humanized, it is more convenient；
Using electronic ink screen, reflectivity and contrast more preferably, can be read, flicker free for a long time, and font size scales freely, not hurt eye
Eyeball；Electronic-paper display screen based on electronic ink technologies, can be non-reflective under sunlight irradiation, closer relative to other display screens
The display effect of paper, it is more convenient in actual use.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of invention for those of ordinary skill in the art without creative efforts, can be with
It obtains other drawings based on these drawings.
Fig. 1 is present system overall structure diagram；
Fig. 2 is display module structural block diagram in present system；
Fig. 3 is present system sound intermediate frequency coding module structural block diagram；
Fig. 4 is the method for the present invention flow chart.
Specific embodiment
In order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below in conjunction with the embodiment of the present invention
In attached drawing, technical scheme in the embodiment of the invention is clearly and completely described, it is clear that described embodiment is
A part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, those of ordinary skill in the art
Every other embodiment obtained without creative efforts, shall fall within the protection scope of the present invention.
The present invention provides a kind of piano tone tuning systems, apply in electronic device, and electronic device includes microphone 2 and shows
Display screen 1, display screen 1 are fixed by bracket, and bracket is connected with piano, which includes:
Display module 106, for connecting display screen 1, driving display screen 1 shows audible spectrum waveform, musical note adjustment state
And command prompt；
Memory module 104, for storing standard audio files；
Audio collection module 101, for receiving the voice signal of piano string sending by microphone 2 and sending it to
Audio coding module 102；
Audio coding module 102 for receiving the voice signal obtained of audio collection module 101, and handles sound letter
Number, obtain the spectrum information of voice signal；
Comparison of wave shape module 103, for will obtain voice signal spectrum information and standard audio files carry out data and
Comparison of wave shape；
Output module 105 is calculated, for calculating comparing result, generates adjustment state and command prompt.
Specifically, display module 106 includes:
Waveform display sub-module 201, for showing the spectrum waveform of voice signal spectrum waveform and standard audio file；
State instruction submodule 202, for showing musical note adjustment state and command prompt.
Specifically, audio coding module 102 includes:
Audio defeat submodule 301 neutralizes noise for generating the reversed sound wave equal with ambient noise, to being obtained
The voice signal obtained carries out noise reduction；
Audio pre-processes submodule 302, for carrying out preemphasis, framing and windowing operation to voice signal obtained；
Waveform sampling submodule 303 forms sampled signal waveform for obtaining the spectrum information of voice signal.
Specifically, this system includes wireless network module 107, for being wirelessly connected internet and by the Internet download mark
Quasi- audio files, while being directed into memory module 104.
Specifically, display screen 1 is electronic ink screen, including touch screen and control button, with electronic ink screen, reflectivity
More preferably with contrast, it can read for a long time, flicker free, font size scales freely, does not hurt eyes；Electronics based on electronic ink technologies
Paper display screen, can be non-reflective under sunlight irradiation, and relative to other display screens closer to the display effect of paper, reading visual angle can
Close to 180 °.
Invention also provides a kind of methods of piano tone tuning, which is characterized in that method comprising steps of
S1, system starting, standard audio files needed for selecting frequency spectrum indication range and calibration；
S2, it is prompted according to display screen, presses string repeatedly and correspond to key, audio collection module receives what piano string issued
Voice signal, and send it to audio coding module；
S3, audio coding module by the voice signal received carry out spectrum analysis, including denoising, preemphasis, adding window, point
Frame and end-point detection obtain voice signal frequency spectrum, draw out corresponding adjusting peak curve to default fixed frequency point peak value；
S4, obtains standard audio files frequency spectrum, and the corresponding default fixed frequency point peak value of acquisition draws out corresponding standard pronunciation
Restrain peak curve；
S5, the spectrum information for obtaining voice signal and standard audio files are subjected to data and comparison of wave shape, obtained best
Matched curve, as best musical note state；
S6, corresponding state is adjusted to according to best musical note state control tuning rod.
The present invention can receive the voice signal of piano string sending by audio collection module, and pass through audio coding
The voice signal received is carried out spectrum analysis by module, obtains voice signal frequency spectrum, and draw to default fixed frequency point peak value
Produce corresponding adjusting peak curve；Signal is denoised, preemphasis, adding window, framing pretreatment related to end-point detection, energy
Collected piano sound is enough set to be more conducive to the analysis of signal；
The present invention be equipped with wireless network module, can download online obtain standard audio files, pass through audio pretreatment son
The spectrum information of voice signal and standard audio files can be carried out data and waveform pair by module and waveform sampling submodule
Than, optimum fit curve, as best musical note state are obtained, and tuning rod is controlled according to best musical note state and is adjusted to corresponding shape
Piano tuning can be realized in state；The present invention simulates human ear system by the way of spectrum curve fitting, will adjust peak curve
Approximate match is realized with standard musical note peak curve, and then adjusts out good piano musical note；
The present invention interacts manipulation by display screen and user, so that adjustment process is more humanized, it is more convenient；
Using electronic ink screen, reflectivity and contrast more preferably, can be read, flicker free for a long time, and font size scales freely, not hurt eye
Eyeball；Electronic-paper display screen based on electronic ink technologies, can be non-reflective under sunlight irradiation, closer relative to other display screens
The display effect of paper, it is more convenient in actual use.
It should be noted that, in this document, relational terms such as first and second and the like are used merely to a reality
Body or operation are distinguished with another entity or operation, are deposited without necessarily requiring or implying between these entities or operation
In any actual relationship or order or sequence.Moreover, the terms "include", "comprise" or its any other variant are intended to
Non-exclusive inclusion, so that the process, method, article or equipment including a series of elements is not only wanted including those
Element, but also including other elements that are not explicitly listed, or further include for this process, method, article or equipment
Intrinsic element.In the absence of more restrictions, the element limited by sentence "including a ...", it is not excluded that
There is also other identical elements in process, method, article or equipment including the element.
The above embodiments are merely illustrative of the technical solutions of the present invention, rather than its limitations；Although with reference to the foregoing embodiments
Invention is explained in detail, those skilled in the art should understand that: it still can be to aforementioned each implementation
Technical solution documented by example is modified or equivalent replacement of some of the technical features；And these modification or
Replacement, the spirit and scope for technical solution of various embodiments of the present invention that it does not separate the essence of the corresponding technical solution.
Claims (6)
1. a kind of piano tone tuning system, applies in electronic device, the electronic device includes microphone and display screen, feature
It is, the display screen is fixed by bracket, and the bracket is connected with piano, the system comprises:
Display module drives the display screen to show audible spectrum waveform, musical note adjustment state and instruction for connecting display screen
Prompt；
Memory module, for storing standard audio files；
Audio collection module, for receiving the voice signal of piano string sending by microphone and sending it to audio coding
Module；
Audio coding module for receiving audio collection module voice signal obtained, and handles the voice signal, obtains
The spectrum information of voice signal；
Comparison of wave shape module, spectrum information and standard audio files for that will obtain voice signal carry out data and waveform pair
Than；
Output module is calculated, for calculating comparing result, generates adjustment state and command prompt.
2. a kind of piano tone tuning system according to claim 1, which is characterized in that the display module includes:
Waveform display sub-module, for showing the spectrum waveform of the voice signal spectrum waveform and standard audio file；
State instruction submodule, for showing musical note adjustment state and command prompt.
3. a kind of piano tone tuning system according to claim 1, which is characterized in that the audio coding module includes:
Audio defeat submodule neutralizes noise, for generating the reversed sound wave equal with ambient noise to sound obtained
Signal carries out noise reduction；
Audio pre-processes submodule, for carrying out preemphasis, framing and windowing operation to voice signal obtained；
Waveform sampling submodule forms sampled signal waveform for obtaining the spectrum information of voice signal.
4. a kind of piano practice system according to claim 1, it is characterised in that: the system comprises wireless network moulds
Block for being wirelessly connected internet and by the Internet download standard audio files, while being directed into the memory module.
5. a kind of piano practice system according to claim 1, it is characterised in that: the display screen is electronic ink screen,
Including touch screen and control button.
6. a kind of method of piano tone tuning, which is characterized in that the method includes the steps:
Step 1: system starts, standard audio files needed for selecting frequency spectrum indication range and calibration；
Step 2: being prompted according to display screen, string is pressed repeatedly and corresponds to key, audio collection module receives what piano string issued
Voice signal, and send it to audio coding module；
Step 3: audio coding module by the voice signal received carry out spectrum analysis, including denoising, preemphasis, adding window, point
Frame and end-point detection obtain voice signal frequency spectrum, draw out corresponding adjusting peak curve to default fixed frequency point peak value；
Step 4, obtains standard audio files frequency spectrum, and the corresponding default fixed frequency point peak value of acquisition draws out corresponding standard pronunciation
Restrain peak curve；
Step 5: the spectrum information for obtaining voice signal and standard audio files are carried out data and comparison of wave shape, obtain best
Matched curve, as best musical note state；
Step 6: controlling tuning rod according to best musical note state is adjusted to corresponding state.
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| CN201811272866.2A CN109308902A (en) | 2018-10-30 | 2018-10-30 | A kind of piano tone tuning system and method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201811272866.2A CN109308902A (en) | 2018-10-30 | 2018-10-30 | A kind of piano tone tuning system and method |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111312198A (en) * | 2019-10-31 | 2020-06-19 | 安徽踏极智能科技有限公司 | Tone fitting degree judgment system based on intelligent piano |
| CN111524416A (en) * | 2020-04-29 | 2020-08-11 | 威海海洋职业学院 | Music teaching training system based on virtual reality |
| CN111754956A (en) * | 2020-07-14 | 2020-10-09 | 西南科技大学 | Piano tuning device and tuning method thereof |
| CN112519530A (en) * | 2020-11-30 | 2021-03-19 | 江苏吉麦新能源车业有限公司 | Noise control system for air blower of automobile air conditioner |
| WO2021212717A1 (en) * | 2020-04-24 | 2021-10-28 | 中科新悦（苏州）科技有限公司 | Audio data analysis method, electronic device, and storage medium |
-
2018
- 2018-10-30 CN CN201811272866.2A patent/CN109308902A/en not_active Withdrawn
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111312198A (en) * | 2019-10-31 | 2020-06-19 | 安徽踏极智能科技有限公司 | Tone fitting degree judgment system based on intelligent piano |
| CN111312198B (en) * | 2019-10-31 | 2023-04-18 | 安徽踏极智能科技有限公司 | Tone fitting degree judgment system based on intelligent piano |
| WO2021212717A1 (en) * | 2020-04-24 | 2021-10-28 | 中科新悦（苏州）科技有限公司 | Audio data analysis method, electronic device, and storage medium |
| CN111524416A (en) * | 2020-04-29 | 2020-08-11 | 威海海洋职业学院 | Music teaching training system based on virtual reality |
| CN111754956A (en) * | 2020-07-14 | 2020-10-09 | 西南科技大学 | Piano tuning device and tuning method thereof |
| CN111754956B (en) * | 2020-07-14 | 2022-01-28 | 西南科技大学 | Piano tuning device and tuning method thereof |
| CN112519530A (en) * | 2020-11-30 | 2021-03-19 | 江苏吉麦新能源车业有限公司 | Noise control system for air blower of automobile air conditioner |
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