Category Archive: Research

Design and Analysis of a Respiratory Sound Simulator for Testing Chest Auscultation Stethoscopes

Abstract There are many different kinds of auscultation transducers today such as mechanical and electronic stethoscopes, accelerometers, and microphones. However, testing these devices on human subjects is a difficult test since their lung… Continue reading

Visual Sound Detector for the Hearing Impaired

ABSTRACT This device aids deaf individuals who have difficulties in recognizing auditory alarms such as fire alarms, car honks, doorbells, and telephone calls. This portable device detects sound and re-alarms the user with… Continue reading

Musical Instrument Classification System Using Mel-Frequency Cepstral Coefficients

PROJECT GOAL In this project, I will design a musical instrument identification system. The goal is to identify musical instruments from individual notes. I am given a database of 8 different instruments, each… Continue reading

Speech Analysis and Synthesis Using Linear Predictive Coefficients

INTRODUCTION In this project, I will build an LPC Vocoder based on an all-pole model of speech production using MATLAB. This analyzes the speech signal and use the analyzed information to resynthesize the… Continue reading

Two Tube Vocal Tract Simulation

ABSTRACT In this paper, a human vocal tract is simulated by two cylindrical tubes to 1) obtain the first five formant frequencies at given lengths and areas of the tubes; 2) to estimate… Continue reading

Loudspeaker Design

This is the first set of loudspeakers I built on my own in 2012. I designed and built a crossover that separates incoming sound signals in different frequencies. The high frequencies become delivered… Continue reading

The Development of Relative Pitch

PDF:  … How and why does our perception change? What is happening to our auditory system during the infants’ critical age? What are the requirements and motivation of acquiring relative pitch? Surprisingly, delving… Continue reading