Earticle

초록

영어

The human auricle is the first part to receive sound from the outside. In this part, the frequency range of human recognizable form is divided and organized. In this study, we propose modeling by applying a single sound source to the surface of the human auricle. This means that when the sound pressure of a low frequency (low frequency) sound enters the pinna, the impedance felt at the tip of a part of the non-linear surface of the pinna is mainly due to the tensile force at the end of the part of the non-linear surface of the pinna. By expressing the situation of moving at a very small speed, the characteristic impedance of the pinna was confirmed to be negative infinity, and it was also confirmed that the speed at the tip of a part of the non-linear surface of the pinna was 0 in the anti-resonance state. It was found that the wave propagation phenomenon that determines the characteristics of the filter is determined by how large the wavelength, kL, is compared to the length of the tip of a part of the non-straight surface of the pinna. Humans first receive sounds from outside through their ears. The auricle is non-linear and has a curved shape, and it is known that it analyzes frequencies while receiving external sounds. The human ear has an audible frequency range of 20Hz - 20,000Hz. Through the study, we applied the characteristics of the notch filter to hypothesize that the human audible frequency range is separated from the auricle, and applied filter theory to analyze it, and as a result, meaningful results were obtained. The curved part and the inner part of the auricle function as a trumpet, collecting sounds, and at the same time amplifying the weak sound of a specific band. The point was found and the shape of the envelope detected in the auricle was found. Selectivity for selecting sounds coming from the outside is the formula of the pinna that implements the function of Q. The function of distinguishing human-recognizable sound from the pinna from low to high through frequency analysis is performed in the pinna, and the 2-3kHz area, where human hearing threshold is the most sensitive, is also the acoustic impedance of the most recessed area of the pinna. It can be seen that starting from.

목차

Abstract
1. Introduction
2. PINNA LENGTH AND WIDTH
3. NOTCH FILTER
3.1 Band-Pass Filter
3.2 BPF1
3.3 BPF2
3.4 Notch Filter Effect
3.5 Notch Filter q Effect
3.6 Notch filter frequency
3.7 Notch filter frequency
4. POINT IMPEDANCE WITH EXCITATION MOTION OF THE TIP OF A FRACTION OF THE NON-STRAIGHT SURFACE OF THE PINNA.
5. FREQUENCY ANALYSIS AT A SPECIFIC POINT ON THE PINNA WITH NOTCH FILTER APPLIED
6. NOTCH FILTER DESIGN APPLICABLE TO PICK AND PICK UP ON THE PINNA
7. NOTCH FILTER TO EXPRESS THE APPEARANCE OF THE PINNA AS AN ELECTRICAL EQUIVALENT CIRCUIT
7.1 60Hz Notch filter
7.2 60Hz Notch Filter design
8. EXPERIMENTS AND RESULTS
9. CONCLUSION
References

키워드

저자

• Dong-Cheol Park [ Professor, Sejong Cyber University Department of Electrical and Electronic Engineering, Korea ] Corresponding Author

참고문헌

발행기관

간행물

표지보기 관심저널 등록

• 간행물명

  The International Journal of Advanced Smart Convergence

• 간기

  계간

• pISSN

  2288-2847

• eISSN

  2288-2855

• 수록기간

  2012~2025

• 십진분류

  KDC 326 DDC 380