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A device for detecting the tone of guitar strings based on machine vision

A machine vision and string technology, which is applied to instruments, musical instruments, stringed instruments, etc., can solve the problems of detection equipment and methods that do not judge the timbre of strings, and achieve the effect of convenient detection.

Active Publication Date: 2018-08-14
仪征市广茂电子电器有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Unfortunately, at this stage, there is no detection equipment and method for judging the timbre of the strings by detecting the vibration trajectory of the guitar strings.

Method used

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  • A device for detecting the tone of guitar strings based on machine vision
  • A device for detecting the tone of guitar strings based on machine vision
  • A device for detecting the tone of guitar strings based on machine vision

Examples

Experimental program
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specific Embodiment 1

[0024] The guitar string timbre detection device based on machine vision of the present embodiment comprises a holding end 1, a saddle end 2, a saddle end 3 and a stretching end 4, the gripping end 1, the saddle end 2, and the saddle end 3 and the stretching end 4 are four points on a line, the bridge end 2 and the saddle end 3 are arranged in parallel, and are perpendicular to the straight line direction from the holding end 1 to the stretching end 4, and the saddle end 2 is along the line from the holding end 1 to the The stretching end 4 moves in the straight line direction; the string 5 to be tested is fixed at the holding end 1, and passes through the saddle end 2, the saddle end 3 to the stretching end 4 in turn; the holding end 1, the saddle end 2, and the saddle end 3 The schematic diagram of the structure combined with the stretching end 4 is as follows figure 1 as shown, figure 1 The arrow next to the middle saddle end 2 indicates the movement direction of the saddl...

specific Embodiment 2

[0027] The guitar string timbre detection device based on machine vision of the present embodiment, on the basis of the specific embodiment 1, further defines that the saddle end 2 and the saddle end 3 move along the direction perpendicular to the X plane, and the X plane is composed of a straight line and b Determined by the straight line, the said straight line a is the direction from the handle end 1 to the stretching end 4, and the said straight line b is the direction where the bridge end 2 or the saddle end 3 is located. Such as image 3 shown in image 3 Among them, the solid line part represents the situation when the saddle end 2 and the saddle end 3 contact the string 5 to be tested, and the dashed line represents the situation when the saddle end 2 and the saddle end 3 leave the string 5 to be tested. This design, when adjusting the pitch of the string 5 to be tested, the bridge end 2 and the saddle end 3 can be separated from the string 5 to be tested, which not o...

specific Embodiment 3

[0028] The guitar string timbre detection device based on machine vision in this embodiment, on the basis of the first embodiment, further limits the exposure time of the image sensor 8 to be set to be more than 10 times the vibration period of the string 5 to be tested. This design enables the string 5 to be tested to complete more than 10 full vibrations within the exposure time of the image sensor 8, and the vibration function is closer to the function of the high-frequency simple harmonic vibration that completes multiple integer multiples of full vibrations within the exposure time, making the detection result more precise.

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Abstract

The invention discloses a guitar string timbre detection device based on machine vision, and belongs to the field of musical instruments, mechanical equipment and precision instruments. The detection device comprises a control end, a saddle end, a nut end and a stretching end. The control end, the saddle end, the nut end and the stretching end are on the same line. The saddle end and the nut end are parallel and perpendicular to the straight line direction from the control end to the stretching end. The saddle end moves in the straight line direction from the control end to the stretching end. A string to be tested is fixed at the control end and passes through the saddle end and the nut end in sequence to reach the stretching end. A guitar pick, a sound pick-up and an image sensor are arranged in the middle of the saddle end and the nut end. The saddle end, the stretching end, the sound pick-up and the image sensor are connected with a computer. According to the guitar string timbre detection device, the technical purpose of judging the string timbre through detection of string vibration can be achieved.

Description

technical field [0001] A machine vision-based guitar string timbre detection device belongs to the fields of musical instruments, mechanical equipment and precision instruments. Background technique [0002] The guitar, also known as the violin, is a plucked string instrument that is often regarded as the main instrument in pop music, rock music, blues, folk songs, and flamenco. [0003] Since the guitar produces sound by the vibration of the strings, the sound of the guitar depends first on whether the vibration trajectory of the strings is standard. Based on the above analysis, the quality of the guitar tone can be judged by detecting the vibration trajectory of the strings. [0004] Unfortunately, there is no detection device and method for judging the timbre of the strings by detecting the vibration trajectory of the guitar strings at this stage. Contents of the invention [0005] In order to achieve the purpose of judging the quality of the guitar timbre by detectin...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G10D3/14
Inventor 宁凯
Owner 仪征市广茂电子电器有限公司
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