CN111429864A

CN111429864A - Semi-automatic tuning method and tuner realized through solid vibration

Info

Publication number: CN111429864A
Application number: CN202010286630.5A
Authority: CN
Inventors: 赵庆龙; 王霄
Original assignee: Jiangsu University
Current assignee: Jiangsu University
Priority date: 2020-04-13
Filing date: 2020-04-13
Publication date: 2020-07-17

Abstract

The invention provides a semi-automatic tuning method and a tuner realized through solid vibration. The energy attenuation generated by the propagation of the vibration in different media is reduced, so that the safety and the tuning accuracy in the tuning process are ensured.

Description

Semi-automatic tuning method and tuner realized through solid vibration

Technical Field

The invention belongs to the technical field of tuning of an acoustic guitar in a stringed instrument, and particularly relates to a semi-automatic tuning device and a tuning mode.

Background

The standard tones of a guitar are respectively defined by ⑥ string one E (bass E), ⑤ string-A, ④ string one D, ③ string one G, ② string one B, ① string one E (treble E), i.e. 3(Mi), 6 (L a), 2(Re), 5 (Si), 3(Mi) of the c note of the numbered musical notation, respectively, according to the musical tones in the system, three or four degrees of interval relations exist between each string.

With the progress of science and technology and the demands of people, a general mass production guitar tuner is already on the market, and a beginner can be helped to manually debug intonation according to the pitch of an electronic display. However, the tuner has the disadvantages that firstly, the tuner can only adjust strings by taking standard pitches as references and cannot be suitable for special string adjustment, secondly, the tuner only provides intonation and cannot help users to automatically adjust strings, and finally, the tuner can only measure audio frequency after being transmitted through various media, and the error of a measuring result is large due to energy attenuation. The current tuner on the market has single function, is not convenient for people to use in daily life, and on the other hand, the existing automatic tuner has certain defects, for example, the influence of guitar type and string type is not considered, and the automatic tuning of one-step in-place type is carried out, so that the string is easily broken or the condition of inaccurate tuning appears.

For the above reasons, it is necessary to design a new type of semi-automatic tuner.

Disclosure of Invention

The invention mainly aims to provide a novel semi-automatic guitar tuning method and a semi-automatic tuner, aiming at reducing string collapse and facilitating tuning by novice hands, ensuring the safety of the string tuning process and improving the tuning accuracy.

The present invention achieves the above-described object by the following technical means.

A semi-automatic tuning method for adjusting string audio frequency through solid vibration comprises the following steps:

the method comprises the following steps: setting a required tuning mode through an operation panel, and defaulting to standard tuning;

step two: collecting vibration signals of the headstock and strings by using an audio acquisition module, inputting data of the headstock and the strings and comparing the data with standard data of the headstock and the strings in a processor;

step three: calculating the working time of the stepping motor, and controlling the stepping motor to perform step adjustment;

step four: and controlling the stepping motor to perform step-type adjustment to a standard audio interval.

Further, in the step three), the step-type adjustment includes a fine adjustment mode and a coarse adjustment plus fine adjustment mode, and the difference is that: whether the input original data and the standard data are different by a musical interval or not; if the difference is larger than one interval, the mode is the coarse adjustment and fine adjustment mode, and if not, the mode is the fine adjustment mode.

Further, the coarse tuning plus fine tuning mode: the processor makes a difference after reducing the standard audio frequency by a pitch, and the difference is divided into 1/2, 1/4 and 1/4 for calculating the number of turns of the stepping motor and feeding back to the transmission device; a fine tuning mode: when the difference between the collected audio frequency and the standard audio frequency is within one audio frequency, the processor equally divides the difference of the audio frequency into three equal parts, and the three equal parts are respectively calculated by the stepping motor and fed back to the transmission device, so that the string cannot have large stress fluctuation in a short time, and the string breakage probability is reduced.

Further, in the step two), a specific method for acquiring the audio signal is as follows: the user respectively stirs six strings to one string in sequence, vibration signals of the strings are collected through the audio acquisition module in contact with the strings, then the vibration signals at the head of the string are collected, and after the collection is finished, the interaction module corresponding to the strings in the tuner sends out collected signals to guide the user to stir the next string.

Furthermore, in the step two), the vibration of the strings is transmitted into the box body through the sound holes of the guitar, the string signals are amplified through the box body to enable the corresponding wood structure of the guitar to vibrate, the vibration is collected at the head of the guitar and then compared with the standard vibration, and calculation is carried out in the processor.

Further, the processor is an arm processor.

Further, the operation panel comprises an led display screen and a human-computer interaction interface.

Further, the clamping device further comprises a clamping unit, and the clamping unit adopts manual mechanical clamping.

Further, considering that most guitar knobs are irregular semicircular shapes, considering that clamping is firm, a v-shaped clamp is selected.

A tuner realized by solid vibration is used for realizing the semi-automatic tuning method of the solid vibration.

The human-computer interaction interface is electrically connected with the processor in a one-way mode through the touch screen and is used for reflecting processing information. The man-machine interaction interface comprises a control panel capable of presetting the string pitch.

The invention has the following beneficial effects:

1. the guitar tuning device has the advantages that the guitar tuning can be carried out quickly, the possibility of string collapse can be greatly reduced under the condition of stepped adjustment of the tuning device, the semi-automatic tuning enables people and the guitar not to be attached to each other, the safety is improved to a great extent, the hands of a user are liberated, the user does not need to manually carry out tedious action of rotating a knob, and the guitar tuning device is very convenient for the user.

2. The invention can adjust the preset string pitch, further combine into a special string adjusting reference, has simple operation, reduces the energy loss generated by the propagation of vibration in different media, is prepared for tuning, and is convenient for beginners without musicality knowledge to get on hand as soon as possible.

Drawings

In the following description, for purposes of explanation and not limitation, specific details are set forth, such as particular system structures, techniques, etc. in order to provide a thorough understanding of the embodiments of the present application. It will be apparent, however, to one skilled in the art that the present application may be practiced in other embodiments that depart from these specific details.

Fig. 1 is a schematic flow chart of an implementation with a semi-automatic tuning method according to an embodiment of the present application.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention.

In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "axial," "radial," "vertical," "horizontal," "inner," "outer," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the present invention and for simplicity in description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered limiting. Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.

In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

The following first describes in detail embodiments according to the present invention with reference to the accompanying drawings

step two: collecting vibration signals of the headstock and strings by using an audio acquisition module, inputting data of the headstock and the strings and comparing the data with standard data in a processor;

Further, in the step two), the vibration of the strings is transmitted into the box body through the guitar sound holes, the string signals are amplified through the box body to enable the corresponding wood structure of the guitar to vibrate, the vibration is collected at the head of the guitar and then compared with the standard vibration, and calculation is carried out in the processor.

Further, the processor is an arm processor.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made in the above embodiments by those of ordinary skill in the art without departing from the principle and spirit of the present invention.

Claims

1. A semi-automatic tuning method for adjusting string audio frequency through solid vibration is characterized by comprising the following steps:

2. Semi-automatic tuning method for tuning string audio through solid vibrations as claimed in claim 1, characterized in that in step three) said stepwise tuning comprises a fine tuning mode and a coarse tuning plus fine tuning mode, distinguished by: whether the difference value between the input original data and the standard data is greater than a musical interval or not; if the difference is larger than one interval, the mode is the coarse adjustment and fine adjustment mode, and if not, the mode is the fine adjustment mode.

3. Semi-automatic tuning method of string audio through solid vibration as claimed in claim 2, characterized by coarse tuning plus fine tuning mode: the processor makes a difference after reducing the standard audio frequency by a pitch, and the difference is divided into 1/2, 1/4 and 1/4 for calculating the number of turns of the stepping motor and feeding back to the transmission device; a fine tuning mode: when the difference between the collected audio frequency and the standard audio frequency is within one audio frequency, the processor equally divides the difference of the audio frequency into three equal parts, and the three equal parts are respectively calculated by the stepping motor and fed back to the transmission device, so that the string cannot have large stress fluctuation in a short time, and the string breakage probability is reduced.

4. The semi-automatic tuning method for adjusting string audio through solid vibration as claimed in claim 1, wherein in the step two), the specific method for obtaining audio signals is as follows: the user stirs six strings to one string in sequence respectively, collects the vibration signal of musical instrument string through the audio acquisition module that contacts with the string, then collects the vibration signal of musical instrument head department, after the collection finishes, sends the signal that finishes of the collection with the corresponding interactive module of this string in the tuning ware, instructs the user to stir next string.

5. The semi-automatic tuning method for adjusting string audio through solid vibration as claimed in claim 4, wherein in step two), the vibration of strings is transmitted to the case through the guitar sound holes, the string signals are amplified through the case to vibrate the corresponding wood structure of the guitar, the vibration is collected at the head and compared with the standard vibration, and the calculation is performed in the processor.

6. Semi-automatic tuning method of string audio through solid vibration according to claim 1 characterized by that said processor is an arm processor.

7. The semi-automatic tuning method for adjusting string audio through solid vibration as claimed in claim 1, wherein said operation panel comprises led display screen and man-machine interface.

8. The semi-automatic tuning method for adjusting string audio through solid vibration as recited in claim 1, further comprising a clamping unit, said clamping unit being manually mechanically clamped.

9. A tuning machine realized by solid vibration, which is used for realizing the semi-automatic tuning method of the solid vibration according to any one of claims 1 to 8.