Sound pressure

1. Introduction The purpose of this experiment was to gain an understanding of how to use a signal generator, acquire data, understand the concept of a Low Pass Filter, gain knowledge of time domain sampling and sample rate, learn how to analyze and present data in MATLAB, as well as learn how to calibrate a microphone and record sound pressure data. To accomplish this the role of an electronics technician whose responsibility was to validate the performance of data acquisition equipment that will be used to acquire data on an upcoming project was taken on. 2. Effect of a Low Pass Filter In order to determine the effect of a low pass filter the NI9234 module was connected to the output of the function generator and set to channel 0. The Data…

Gum Company, LLC 123 Street Drive, Somewhere, ST 01234 Hearing Conservation Program Proposal Dear Mr. Smith, Thank you for your inquiry about a hearing conservation program for your company. I’ve provided an outline of a hearing conservation program with OSHA guidelines and costs for you to consider. To clarify some of your questions, the abbreviation of dB stands for decibels, which is how acoustic power is measured. Since the human ear can’t hear all the sounds that may be measured…

similar treatment program that differed from the LSVT only in that it emphasized high respiratory effort over high respiratory-phonatory effort. The results of this comparison showed that while LSVT resulted in greater improvements in sound pressure level (SPL) over the alternative program, the other program still contributed to patient improvement in vocal loudness. Since vocal loudness was able to be improved without the phonatory emphasis highlighted in LSVT program, the researchers wished to…

Sound Waves in Music Intervals Introduction Mechanical Wave Sound is a mechanical wave. It has an original source that is a vibrating object. It travels in a medium through particle-to-particle interaction. Longitudinal Wave In a sound wave, the particles in the medium oscillate in a direction parallel to direction of energy transport. This results in compressions and rarefactions in the particles- Lower pressure causes molecules to expand into a large region of space called rarefactions, and…

Tinnitus is the ringing in the ear, which is an unwanted sound that one can hear. The sounds can be constant or comes and goes, soft or loud, and in one ear or both. There are three ways to distinguish the symptoms of the patient’s tinnitus sound: tonal tinnitus, pulsatile tinnitus, and musical tinnitus. Tonal is a near continuous sound that are affiliated with subjective tinnitus, which is just the normal ringing sound, pulsatile is pulsing sound that one hears from their heartbeat and for some…

back in. This creates an area of low pressure within the flask. When the stopper is quickly pulled out of the flask, the air rushes back into the flask because the pressure of the atmosphere is higher than the pressure inside the flask. If the stopper is pulled out with sufficient force and swiftness, a “popping” sound is produced that corresponds to the resonant frequency of the air column inside the flask (Henderson, n.d.). This sound is a longitudinal standing wave, or a wave that, if it were…

Hz. If a material has an NRC of 0, it will reflect sound. If it has an NRC of 1, it is perfectly absorptive. These numbers can be converted into a percentage, therefore ranging from 0% to 100% in absorptiveness. (Noise Reduction Coefficients (NRC) Ratings for Common Building Materials & Products, n.d.) In order to soundproof a room, one must keep in mind that blocking an air path using a regular wall, ceiling, or door will not entirely reduce the sound. Vibrations will continue to travel…

Do you know what a sonic boom is? Do you know how a sonic boom is created? After you read this paper you will be able to answer yes to both questions. A sonic boom is a thunder like sound that can only be heard on the ground. A sonic boom is a shock wave created by an airplane or another aerospace object flying equal to or greater than the speed of sound. A physicist named Ernst Mach established a way to measure airspeed to the speed of sound. (Wonderpolis pg.2). Mach 1 is when you are flying at…

Sam Pollard The Senses (Journal) Audition A busy street. A jet in the sky. A child crying. These are just some of the millions of sounds that you encounter on a daily basis. But, how do these sounds go from one object to another? How do our ears work? How do we perceive sound and do we perceive sound differently than others? Even though we cannot see the inside of our ears to find out what is going on, we do know that hearing is triggered by certain physical stimuli. Pressure waves are one thing…

OUTLINE HOW DAMAGE CAN OCCUR TO HUMAN HEARING Damage to human hearing can be affected in many ways, such as noise, medication, disease and injury. Noise: Noise is the most known of damage to human hearing, and is known as Noise Induced Hearing Lose. This occurs when a sound is to loud and becomes harmful to the human ear. How can noise damage our hearing? To understand how NIHL happens, we need to understand how it is that we hear. First, sound waves enter our outer ear then travel through…