CN106504767A - Musical instrument tuning and song pitch determination methods by sound waveform - Google Patents

Musical instrument tuning and song pitch determination methods by sound waveform Download PDF

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CN106504767A
CN106504767A CN201610890632.9A CN201610890632A CN106504767A CN 106504767 A CN106504767 A CN 106504767A CN 201610890632 A CN201610890632 A CN 201610890632A CN 106504767 A CN106504767 A CN 106504767A
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frequency
sound
trough
actual
musical instrument
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耿梁宸
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    • 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
    • G10L25/48—Speech or voice analysis techniques not restricted to a single one of groups G10L15/00 - G10L21/00 specially adapted for particular use
    • G10L25/51—Speech or voice analysis techniques not restricted to a single one of groups G10L15/00 - G10L21/00 specially adapted for particular use for comparison or discrimination
    • 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
    • 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
    • G10L21/06—Transformation of speech into a non-audible representation, e.g. speech visualisation or speech processing for tactile aids
    • G10L21/10—Transforming into visible information
    • 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
    • G10L21/06—Transformation of speech into a non-audible representation, e.g. speech visualisation or speech processing for tactile aids
    • G10L21/10—Transforming into visible information
    • G10L21/12—Transforming into visible information by displaying time domain information
    • 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
    • G10L21/06—Transformation of speech into a non-audible representation, e.g. speech visualisation or speech processing for tactile aids
    • G10L21/10—Transforming into visible information
    • G10L21/14—Transforming into visible information by displaying frequency domain information

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  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Computational Linguistics (AREA)
  • Signal Processing (AREA)
  • Health & Medical Sciences (AREA)
  • Audiology, Speech & Language Pathology (AREA)
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  • Physics & Mathematics (AREA)
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  • Quality & Reliability (AREA)
  • Data Mining & Analysis (AREA)
  • Auxiliary Devices For Music (AREA)
  • Electrophonic Musical Instruments (AREA)

Abstract

The present invention discloses a kind of musical instrument tuning method by sound waveform, and the method includes：Record and store the performance sound of musical instrument；Show sound waveform figure by software and calculate the actual sound frequency of the sound；It is compared with standard pitch frequency；Musical instrument tuning is carried out according to above-mentioned comparative result；Repeat said process, until the difference of actual sound frequency and standard pitch frequency is in range of error.Invention additionally discloses a kind of song pitch determination methods by sound waveform, the method includes：Record and store the performance sound of musical instrument；Show sound waveform figure by software and calculate the actual sound frequency of the sound；It is compared with standard pitch frequency.The method of the present invention is simple to operate, and simple equipments are easy to get, and facilitates ordinary people to carry out independently being judged from keynote and to the pitch of song to musical instrument.

Description

Musical instrument tuning and song pitch determination methods by sound waveform
Technical field
The present invention relates to musical instrument tuning and pitch judgment technology field.More particularly, to a kind of by sound waveform Musical instrument tuning method and song pitch determination methods.
Background technology
Musical instrument inevitably produces the high-frequency problem of actual sound frequency departure standard pronunciation in use, with As a example by piano：Piano is a kind of keyboard instrument in western classical music, it by 88 keys (52 white keys, 36 black keys) and Metallic cord soundboard is constituted, and because of its graceful tone color, be there are solo and the several functions that instrumental ensembles, is had the laudatory title of " king of musical instrument ".Steel The range scope of qin almost enumerates the whole musical sounds in Musical System from A2 (27.5Hz) to C5 (4186Hz), is except pipe The most wide musical instrument of range beyond organ.The graceful tone color of piano is built upon on the basis of good machine performance.Piano Musical note be by string rate of tension ensureing accuracy in pitch, as string is chronically at tensioning state, when playing, string can also Vibration is produced, therefore string can produce creep under variable stress, so as to cause tone to change.In addition, external shock, piano machinery structure The reason for making itself and weather, the change of temperature affect all necessarily to cause string to be relaxed, and deviate the musical note of standard, so we It is not right with regard to perceived sounds that bullet gets on, pleasing to the ear during musical note not as just mixing up, and especially specialty is played, and the requirement to accuracy in pitch is even more very Strictly.Therefore, piano is typically required for tuning a stringed instrument one every year to twice.
Piano tone tuning is a professional higher job, and current piano tone tuning technology is mainly manually tuning, and right The requirement of tuning personnel is very high, needs to have very sensitive piano pitch recognition ability.Artificial tuning be mainly tuning personnel according to Hear piano pronunciation according to human ear to judge the accuracy in pitch of piano, then with tuning instrument regulation string, string, the level of tightness of reed, So that its eigentone reaches the standard frequency of the sound, sound and reach standard pitch.Whole tuning process is not only very Loaded down with trivial details, very high to professional's requirement, and degree of accuracy is not high.With the development of society, popularization of the piano in average family, energy The tuner of competent piano tone tuning work is far from the demand for meeting people.Although existing associated machines also have a lot, But as technology is immature, for the analysis of signal and the display of result are required for some specialized equipments, it is not suitable for vast sound Happy fan carries out self tuning, and being also biased into professional tuner in practical application carries out artificial tuning.
Sound is all the frequency that can calculate sound exactly by the waveform of sound with waveform, and relative to For other sound, the sound waveform of musical instrument has the shape for more smoothing.At present, with the development of computer software, domestic The software for being capable of recorded voice waveform on computer or panel computer is very easy to obtain.Accordingly, it is desirable to provide one kind is by sound The musical instrument tuning method of sound wave shape, can utilize home computer or panel computer recorded voice waveform, by dividing to waveform Analysis is calculated, and is drawn the frequency of musical instrument and is compared with standard frequency, realizes that common music fan is carried out independently as needed Tuning.
In addition, ordinary people and singer itself judge not enough specialty to the accuracy in pitch for giving song recitals, it is impossible to make standard to accuracy in pitch True evaluation, is unfavorable for the raising of singer's performance level.Accordingly, it is desirable to provide a kind of pitch judgement side by sound waveform Method, can utilize home computer or panel computer recorded voice waveform, by the analytical calculation to waveform, to singing sound Actual frequency are compared with standard frequency, realize that common music fan carries out accuracy in pitch evaluation and exercise according to comparative result.
Content of the invention
It is an object of the present invention to provide a kind of musical instrument tuning method by sound waveform, can be used tricks using family Calculation machine or panel computer recorded voice waveform, by the analytical calculation to waveform, are drawn the frequency of musical instrument and are entered with standard frequency Row compares, and realizes that common music fan is carried out as needed from keynote.
For reaching above-mentioned purpose, the present invention adopts following technical proposals：
A kind of musical instrument tuning method by sound waveform, the method are comprised the following steps：
Step 1：Record and store the performance sound of musical instrument；
Step 2：Show sound waveform figure by the software with display sound waveform function and calculate the reality of the sound Sound frequency, specifically
Sound waveform figure transverse axis is set as conventional timing；
Appoint in oscillogram and take a crest/trough, as primary peak/trough, write down the corresponding horizontal stroke of crest/trough The axle time is t1；
A crest/trough is separately taken in oscillogram, as secondary peak/trough, writes down the corresponding horizontal stroke of crest/trough The axle time is t2；
Sound wave number n between statistics primary peak/trough and secondary peak/trough；
Actual sound frequency f is tried to achieve using formula：
F=n/ | t1—t2|
Wherein, n is natural number and n >=1；
Step 3：Actual sound frequency is compared with standard pitch frequency；
Step 4：Musical instrument tuning is carried out according to above-mentioned comparative result；
Step 5：Repeat said process, until the difference of actual sound frequency and standard pitch frequency is in range of error.
Preferably, also include before " calculating actual sound frequency "：Sound waveform is amplified in oscillogram.
Preferably, primary peak/trough and secondary peak/trough are chosen so that primary peak/trough and secondary peak/ Sound wave number n between trough is more than or equal to 10.
Preferably, k calculating is carried out to actual sound frequency, and its corresponding sound frequency is respectively f1、f2…fk, actual sound Voice frequency f：
F=(f1+f2+…+fk)/k
Wherein, k is natural number and k >=2.
Preferably, actual sound frequency and standard pitch frequency are compared and obtain three kinds of comparative results：Actual sound Frequency is inclined higher than standard pitch frequency and actual sound frequency and standard pitch less than standard pitch frequency, actual sound frequency Difference is in range of error.
Preferably, if actual sound frequency tightens tuning device less than standard pitch frequency；If actual sound frequency is high In standard pitch frequency, then loosen tuning device.
Further object is that providing a kind of pitch determination methods by sound waveform, domestic can be utilized Computer or panel computer recorded voice waveform, by the analytical calculation to waveform, draw the actual sound frequency of singer, enter One step judges the difference of its pitch and standard pitch, makes evaluation to singer's accuracy in pitch.
For reaching above-mentioned purpose, the present invention adopts following technical proposals：
A kind of song pitch determination methods by sound waveform, the method are comprised the following steps：
Step 1：Record and store sound to be measured；
Step 2：Show sound waveform figure by the software with display sound waveform function and calculate the reality of the sound Sound frequency, specifically
Sound waveform is amplified in oscillogram；
Sound waveform figure transverse axis is set as conventional timing；
Appoint in oscillogram and take a crest/trough, as primary peak/trough, write down the corresponding horizontal stroke of crest/trough The axle time is t1；
A crest/trough is separately taken in oscillogram, as secondary peak/trough, writes down the corresponding horizontal stroke of crest/trough The axle time is t2；
Sound wave number n between statistics primary peak/trough and secondary peak/trough；
Actual sound frequency f is tried to achieve using formula：
F=n/ | t1—t2|；
Step 3：Actual sound frequency is compared with standard pitch frequency, three kinds of comparative results are obtained：Actual sound Frequency is inclined higher than standard pitch frequency and actual sound frequency and standard pitch less than standard pitch frequency, actual sound frequency Difference is in range of error；
Wherein, n is natural number and n >=1.
Preferably, primary peak/trough and secondary peak/trough are chosen so that primary peak/trough and secondary peak/ Sound wave number n between trough is more than or equal to 10.
Preferably, k calculating is carried out to actual sound frequency, and its corresponding sound frequency is respectively f1、f2…fk, actual sound Voice frequency f：
F=(f1+f2+…+fk)/k
Wherein, k is natural number and k >=2.
Beneficial effects of the present invention are as follows：
1. the musical instrument tuning method by sound waveform of the present invention, simple to operate, simple equipments are easy to get, will more difficult judgement Pitch be converted into the frequency of accurate calculating, eliminate the trouble for asking tuner to carry out tuning, effectively prevent the warp of tuner Test the impact that factor and other factors exchange vocal cores.
2. song pitch determination methods by sound waveform of the present invention, simple to operate, simple equipments are easy to get, and can make general Logical people and singer itself make science to the accuracy in pitch for giving song recitals and accurately judge, are conducive to common music fan according to sentencing Disconnected result carries out accuracy in pitch evaluation and exercise.
Description of the drawings
Below in conjunction with the accompanying drawings the specific embodiment of the present invention is described in further detail.
Fig. 1 illustrates sound waveform schematic diagram.
Fig. 2 illustrates the musical instrument tuning method and step figure by sound waveform.
Fig. 3 illustrates the sonogram picture of middle pitch 1 before tuning in embodiment 1.
Fig. 4 illustrates piano pitch frequencies synopsis.
Fig. 5 illustrates the sonogram picture of middle pitch 1 after tuning in embodiment 1.
Fig. 6 illustrates the sonogram picture of bass 5 before tuning in embodiment 2.
Fig. 7 illustrates the sonogram picture of bass 5 after tuning in embodiment 2.
Fig. 8 illustrates the song pitch determination methods block diagram by sound waveform.
Fig. 9 illustrates the sonogram picture of song benchmark pitch in embodiment 3.
Specific embodiment
In order to be illustrated more clearly that the present invention, the present invention is done further with reference to preferred embodiments and drawings Bright.In accompanying drawing, similar part is indicated with identical reference.It will be appreciated by those skilled in the art that institute is concrete below The content of description is illustrative and be not restrictive, and should not be limited the scope of the invention with this.
Fig. 1 is the oscillogram of sound, can clearly distinguish the crest and trough of sound waveform in FIG.Through than Compared with understanding, the shape of musical instrument sound wave is more round and smooth, the crest and trough with convenient resolution.
In the present invention, a kind of musical instrument tuning method by sound waveform can utilize home computer or panel computer Recorded voice waveform, by the analytical calculation to waveform, is drawn the frequency of musical instrument and is compared with standard frequency, is realized common Music-lover is carried out as needed from keynote.
As shown in Fig. 2 a kind of musical instrument tuning method by sound waveform, the method is comprised the following steps：
S1：The performance sound of musical instrument is recorded and stores, that recorded herein plays the sound that sound is a note, such as piano Key play sound.
S2：Show sound waveform figure by the software with display sound waveform function and calculate the actual sound of the sound Frequency, in the present invention, software can select the software that Cool Edit or Gold Wave etc. can show sound waveform, specifically include Following steps：
S201：Sound waveform is amplified in oscillogram, it is preferable that oscillogram is amplified to maximum as far as possible, can be reduced Error, improves precision；
S202：Sound waveform figure transverse axis is set as conventional timing, when conventional timing is minute, second, millisecond meter；
S203：Appoint in oscillogram and take a crest/trough, as primary peak/trough, write down the crest/trough pair The transverse axis time that answers is t1；
S204：A crest/trough is separately taken in oscillogram, as secondary peak/trough, writes down the crest/trough pair The transverse axis time that answers is t2；
S205：Sound wave number n between statistics primary peak/trough and secondary peak/trough, n are natural number and n >=1；
S206：Actual sound frequency f is tried to achieve using formula：
F=n/ | t1—t2|
It should be noted that choose primary peak/trough and during secondary peak/trough, the actual sound that the value of n is calculated more greatly Voice frequency is more accurate.Preferably so that the sound wave number n between primary peak/trough and secondary peak/trough is more than or equal to 10. It is further preferred that actual sound frequency is carried out repeatedly to calculate, and the accuracy for calculating can be improved, such as actual sound frequency is entered K calculating of row, its corresponding sound frequency are respectively f1、f2…fk, actual sound frequency f：
F=(f1+f2+…+fk)/k
Wherein, k is natural number and k >=2.
S3：Actual sound frequency is compared with standard pitch frequency, three kinds of comparative results are obtained：Actual sound frequency Exist higher than the deviation of standard pitch frequency and actual sound frequency and standard pitch less than standard pitch frequency, actual sound frequency In range of error.
S4：Musical instrument tuning is carried out according to above-mentioned comparative result, if actual sound frequency is tightened less than standard pitch frequency Tuning device；If actual sound frequency loosens tuning device higher than standard pitch frequency.
S5：Repeat said process, until the difference of actual sound frequency and standard pitch frequency is in range of error.
Said method is illustrated with reference to specific embodiment
Embodiment 1
The present embodiment is piano tone tuning, by taking the adjustment of the middle pitch 1 (do) of a piano as an example：
S1：Record and store the middle pitch 1 (do) of piano.
S2：Show sound waveform figure by Cool Edit softwares on computer or flat board and calculate the actual sound of the sound Voice frequency, specifically includes following steps：
S201：Sound waveform is put into maximum in oscillogram, as shown in Figure 3；
S202：Sound waveform figure transverse axis is set as conventional timing, when conventional timing is minute, second, millisecond meter；
S203：A trough of Far Left mark line is chosen in oscillogram, as the first trough, writes down the trough corresponding The transverse axis time be t1, t1=28.126680s；
S204：A trough of rightmost mark line is chosen in oscillogram, as the second trough, writes down the trough corresponding The transverse axis time be t2, t2=28.163685s；
S205：Count the sound wave number n=20 between the first trough and the second trough；
S206：Actual sound frequency f is tried to achieve using formula：
F=n/ | t1—t2|=555.478Hz.
S3：As shown in figure 4, bass 6 is 440Hz, and it is that the standard for being given in the world defines frequency, remaining frequency is pushed away by it Derive and, i.e., per adjacent pair semitone, the latter is that the former 12 radical signs of frequency are lower 2 times, can be released by this computational methods whole The frequency values of individual scale.Table look-up and learn, the frequency of middle pitch 1 should be 523Hz, but this sound is seriously higher by standard frequency, it should Reduce pitch.
S4：Piano tone tuning is carried out according to above-mentioned comparative result, string or reed are suitably loosened, reduce tone.
S5：Loosen string, adjust after finishing, survey again once according to above-mentioned steps.In this measurement, as shown in figure 5, t1= 27.593740s, t2=27.631690s.As seen from the figure, number n=20 intercycle.Substitute into formula to calculate, obtain frequency f= 527.009Hz, in the error allowed band of the standard frequency for reaching middle pitch 1, tuning is finished.
Embodiment 2
For, during bowed stringed instrument tuning, the present embodiment is illustrated by taking a matouqin bass 5 (so) as an example.
, with embodiment 1, before tuning, waveform is as shown in Figure 6 for remaining step.Understand, the waveform of the matouqin is more complicated, but Be the cycle clearly.The crest ratio trough of the sound wave becomes apparent from, and used in the present embodiment, crest counts n=20 as labelling The individual cycle.After amplification, t is obtained1=6.12545s, t2=6.17880s, substitutes into formula, obtains frequency f=374.88Hz, is close to In bass 4# (bass rises fa), but, this sound should be bass 5 (so) originally.Therefore, it should tighten string, make the change of tune high (i.e. frequency become big) some.Adjustment is finished, and is measured again, and carries out finer regulation, until reaching standard 392Hz.Tuning Afterwards, as shown in fig. 7, t1=6.09880s, t2=6.12431s, is substituted into formula and calculates f=392.003Hz, connect very much with standard pronunciation Closely, tuning is finished.
Further object is that providing a kind of pitch determination methods by sound waveform, domestic can be utilized Computer or panel computer recorded voice waveform, by the analytical calculation to waveform, draw the actual sound frequency of singer, enter One step judges the difference of its pitch and standard pitch, makes evaluation to singer's accuracy in pitch.
As shown in figure 8, in the present invention, a kind of song pitch determination methods by sound waveform, the method includes following Step：
S1：Record and store song to be measured.
S2：Show sound waveform figure by the software with display sound waveform function and calculate the actual sound of the sound Frequency, specifically
S201：Sound waveform is amplified in oscillogram；
S202：Sound waveform figure transverse axis is set as conventional timing；
S203：Appoint in oscillogram and take a crest/trough, as primary peak/trough, write down the crest/trough pair The transverse axis time that answers is t1；
S204：A crest/trough is separately taken in oscillogram, as secondary peak/trough, writes down the crest/trough pair The transverse axis time that answers is t2；
S205：Sound wave number n between statistics primary peak/trough and secondary peak/trough, it is preferable that choose first wave Peak/trough and secondary peak/trough so that the sound wave number n between primary peak/trough and secondary peak/trough is more than or equal to 10.
S206：Actual sound frequency f is tried to achieve using formula：
F=n/ | t1—t2|.
S3：Actual sound frequency is compared with standard pitch frequency, three kinds of comparative results are obtained：Actual sound frequency Exist higher than the deviation of standard pitch frequency and actual sound frequency and standard pitch less than standard pitch frequency, actual sound frequency In range of error；Wherein, n is natural number and n >=1.
It should be noted that actual sound frequency is carried out repeatedly to calculate, and accuracy can be improved, such as actual sound frequency is entered K calculating of row, its corresponding sound frequency are respectively f1、f2…fk, actual sound frequency f：
F=(f1+f2+…+fk)/k
Wherein, k is natural number and k >=2.
Illustrate with reference to one embodiment
Embodiment 3
In the present embodiment, in order to determine benchmark pitch that certain singer gives song recitals, the mp3 files of the song are imported Cool In edit.First sound that the singer sings is found, as shown in Figure 9.
15 cycles, because voice is more complicated than sinusoidal sound wave, it is easier to produce error, institute are chosen in above sound wave Reach the purpose for reducing error to choose several cycles more.Waveform amplification, is adjusted at the mark line on the left side, obtains time t1 =25.738425s, then be adjusted at the mark line on the right, obtain t2=25.786000s.Formula is substituted into, frequency f is calculated =315.29Hz.Visual reference sound should be bass 2#, exactly rise re.
Reach a conclusion：The pitch of the singer is not very accurately, but differs very little with standard frequency.
Obviously, the above embodiment of the present invention is only intended to clearly illustrate example of the present invention, and is not right The restriction of embodiments of the present invention, for those of ordinary skill in the field, may be used also on the basis of the above description To make other changes in different forms, all of embodiment cannot be exhaustive here, every belong to this Bright technical scheme extended obvious change or change still in protection scope of the present invention row.

Claims (9)

1. a kind of musical instrument tuning method by sound waveform, it is characterised in that the method comprising the steps of：
Step 1：Record and store the performance sound of musical instrument；
Step 2：Show sound waveform figure by the software with display sound waveform function and calculate the actual sound of the sound Frequency, specifically
Sound waveform figure transverse axis is set as conventional timing；
Appoint in oscillogram and take a crest/trough, as primary peak/trough, when writing down the corresponding transverse axis of the crest/trough Between be t1；
A crest/trough is separately taken in oscillogram, as secondary peak/trough, when writing down the corresponding transverse axis of the crest/trough Between be t2；
Count the sound wave number n between the primary peak/trough and secondary peak/trough；
Actual sound frequency f is tried to achieve using formula：
F=n/ | t1—t2|；
Step 3：Actual sound frequency is compared with standard pitch frequency；
Step 4：Musical instrument tuning is carried out according to above-mentioned comparative result；
Step 5：Repeat said process, until the difference of actual sound frequency and standard pitch frequency is in range of error；
Wherein, n is natural number and n >=1.
2. musical instrument tuning method according to claim 1, it is characterised in that before described " calculating actual sound frequency " also Including：Sound waveform is amplified in oscillogram.
3. musical instrument tuning method according to claim 1, it is characterised in that choose primary peak/trough and secondary peak/ Trough so that the sound wave number n between the primary peak/trough and secondary peak/trough is more than or equal to 10, to improve calculating Accuracy.
4. musical instrument tuning method according to claim 1, it is characterised in that carry out k calculating to actual sound frequency, its Corresponding sound frequency is respectively f1、f2…fk, actual sound frequency f：
F=(f1+f2+…+fk)/k
Wherein, k is natural number and k >=2, to improve the accuracy of calculating.
5. musical instrument tuning method according to claim 1, it is characterised in that described by actual sound frequency and standard pitch Frequency is compared and obtains three kinds of comparative results：Actual sound frequency is less than standard pitch frequency, actual sound frequency higher than mark The deviation of quasi- pitch frequencies and actual sound frequency and standard pitch is in range of error.
6. musical instrument tuning method according to claim 5, it is characterised in that
If actual sound frequency tightens tuning device less than standard pitch frequency；
If actual sound frequency loosens tuning device higher than standard pitch frequency.
7. a kind of song pitch determination methods by sound waveform, it is characterised in that the method comprising the steps of：
Step 1：Record and store sound to be measured；
Step 2：Show sound waveform figure by the software with display sound waveform function and calculate the actual sound of the sound Frequency, specifically
Sound waveform is amplified in oscillogram；
Sound waveform figure transverse axis is set as conventional timing；
Appoint in oscillogram and take a crest/trough, as primary peak/trough, when writing down the corresponding transverse axis of the crest/trough Between be t1；
A crest/trough is separately taken in oscillogram, as secondary peak/trough, when writing down the corresponding transverse axis of the crest/trough Between be t2；
Count the sound wave number n between the primary peak/trough and secondary peak/trough；
Actual sound frequency f is tried to achieve using formula：
F=n/ | t1—t2|；
Step 3：Actual sound frequency is compared with standard pitch frequency, three kinds of comparative results are obtained：Actual sound frequency Exist higher than the deviation of standard pitch frequency and actual sound frequency and standard pitch less than standard pitch frequency, actual sound frequency In range of error；
Wherein, n is natural number and n >=1.
8. song pitch determination methods according to claim 7, it is characterised in that choose primary peak/trough and second Crest/trough so that the sound wave number n between the primary peak/trough and secondary peak/trough is more than or equal to 10, to improve The accuracy of calculating.
9. song pitch determination methods according to claim 7, it is characterised in that carry out k meter to actual sound frequency Calculate, its corresponding sound frequency is respectively f1、f2…fk, actual sound frequency f：
F=(f1+f2+…+fk)/k
Wherein, k is natural number and k >=2, to improve the accuracy of calculating.
CN201610890632.9A 2016-10-12 2016-10-12 Musical instrument tuning and song pitch determination methods by sound waveform Pending CN106504767A (en)

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CN107393518A (en) * 2017-07-14 2017-11-24 杭州电子科技大学 A kind of intelligent piano musical note identification and automatic adjustment system and method
CN107705775A (en) * 2017-08-17 2018-02-16 广东工业大学 A kind of a variety of musical instrument tuning methods based on RBF neural
CN108492347A (en) * 2018-04-11 2018-09-04 广东数相智能科技有限公司 Image generating method, device and computer readable storage medium
WO2019071491A1 (en) * 2017-10-11 2019-04-18 深圳传音通讯有限公司 Intelligent terminal-based sound effect distinguishing method and sound effect distinguishing system
CN109741658A (en) * 2019-03-20 2019-05-10 任磊 A kind of Multi-function electronic music instrument tutoring system for music teaching
CN112885374A (en) * 2021-01-27 2021-06-01 吴怡然 Sound accuracy judgment method and system based on spectrum analysis

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101807391A (en) * 2010-02-09 2010-08-18 李忠孝 Piano automatic tone tuning device and automatic tone tuning method thereof
CN102982792A (en) * 2011-09-07 2013-03-20 杜惠红 Method using mobile phone to tune musical instrument and device using mobile phone to tune musical instrument
CN103177732A (en) * 2013-03-26 2013-06-26 航天科技控股集团股份有限公司 Sound comparison processing detection system and detection method based on digital signal processor (DSP)
CN103237116A (en) * 2013-03-25 2013-08-07 广东欧珀移动通信有限公司 Method and device for assisting guitar tuning by utilizing mobile terminals
CN104680881A (en) * 2015-02-13 2015-06-03 莫奇 Teaching method for mobile and online music
WO2016111330A1 (en) * 2015-01-09 2016-07-14 節雄 阿仁屋 Evaluation method for audio device, device for evaluation method, audio device, and speaker device

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101807391A (en) * 2010-02-09 2010-08-18 李忠孝 Piano automatic tone tuning device and automatic tone tuning method thereof
CN102982792A (en) * 2011-09-07 2013-03-20 杜惠红 Method using mobile phone to tune musical instrument and device using mobile phone to tune musical instrument
CN103237116A (en) * 2013-03-25 2013-08-07 广东欧珀移动通信有限公司 Method and device for assisting guitar tuning by utilizing mobile terminals
CN103177732A (en) * 2013-03-26 2013-06-26 航天科技控股集团股份有限公司 Sound comparison processing detection system and detection method based on digital signal processor (DSP)
WO2016111330A1 (en) * 2015-01-09 2016-07-14 節雄 阿仁屋 Evaluation method for audio device, device for evaluation method, audio device, and speaker device
CN104680881A (en) * 2015-02-13 2015-06-03 莫奇 Teaching method for mobile and online music

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
周群: "《电子技术基础实验模拟、数字》", 31 August 2014 *

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107393518A (en) * 2017-07-14 2017-11-24 杭州电子科技大学 A kind of intelligent piano musical note identification and automatic adjustment system and method
CN107705775A (en) * 2017-08-17 2018-02-16 广东工业大学 A kind of a variety of musical instrument tuning methods based on RBF neural
WO2019071491A1 (en) * 2017-10-11 2019-04-18 深圳传音通讯有限公司 Intelligent terminal-based sound effect distinguishing method and sound effect distinguishing system
CN108492347A (en) * 2018-04-11 2018-09-04 广东数相智能科技有限公司 Image generating method, device and computer readable storage medium
CN108492347B (en) * 2018-04-11 2022-02-15 广东数相智能科技有限公司 Image generation method, device and computer readable storage medium
CN109741658A (en) * 2019-03-20 2019-05-10 任磊 A kind of Multi-function electronic music instrument tutoring system for music teaching
CN112885374A (en) * 2021-01-27 2021-06-01 吴怡然 Sound accuracy judgment method and system based on spectrum analysis

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Application publication date: 20170315