Sound pressure

Acoustic reflexes are contractions of the stapedius muscle in the middle ear. This reflex occurs when a loud sound is presented to the ear causing the tympanic membrane to stiffen and cause a change in immittance (Martin & Clark, 2012). When measuring the acoustic reflex threshold, we are measuring the softest sound that can cause a reflex of the stapedius muscle as well as the duration of time needed for the reflex to decay. The reflex is presented as a deflection, or a curve/dip, on the…

Being in a band has let me see some great compositions by Tyler Grant, and Robert Smith. The amount of joy I, and my friends have gotten from playing this music has inspired me to want to compose music. This experience highlights that composing music brings many people joy, helps, and inspires them. As a music composer, one could compose for animation, video games, or movies, to have fun composing while affecting humanity. One profession that involves composing music is an animation score…

Sound is an everyday occurring phenomenon, and sounds are continuously happening in nearly all aspects of ordinary life. In order to for our ears to perceive sound, a number of processes must occur, during which sound energy is converted into mechanical energy (NIDCD, 2013). The outer ear collects the sound; the middle ear transforms the energy of the sound wave into vibrations, and the inner ear then transforms this energy into nerve impulses, which eventually reach the brain (The Human Ear,…

hear the brassy sound given off by the trumpets. I used to be a trumpet player so I enjoy to listen to the sounds it can produce. The Jazz Night consisted of four groups that each performed their own unique variation of Jazz music. I was amazed by all the performances, even the Vocal Jazz which I thought was going to be my least…

music seems to be more available and used more often. Hearing loss due to exposure is a growing concern. To combat this growing concern, should a limit be set on how loud headphones are allowed to go? The recommended level of unprotected exposure for sound is 8 hours a day at 85, decibels, as recommended by the National Institute for Occupational Safety and Health. Overexposure to loud noise can cause loss of hearing in everyone. Some music players can go up to 105 decibels at which the maximum…

ancestors needed to do was beat on it in order to get the sound output. Drums exist in a wide variety of shapes and sizes and can also be customized according to specific needs of the drummer. Different tools known as beaters are used to strike them, these tools can be wooden sticks, wire brushes, wooden sticks with cloth or cotton head or in some cases even bare hands. Adding to that some drums also offer tenability features and product sound from the vibration of the stretched membrane also…

The photo on the right shows a medical technician using an ultrasound machine to diagnose appendicitis to a patient, without the use of x-rays. The ultrasound imaging technique involves using high frequency sound waves and their echoes. The machine transmits high-frequency sound pulses into the patient’s body using a probe. In the image, the technician presses and moves the probe along the patient’s body. This photo was taken in the St. Louis Children’s Hospital, and obtained from *. In terms…

We listen to music and hear sound in our everyday lives, whether we are listening to the music in our car, or we are listening to the sound the vacuum makes when it is turned on. Sound and music however, are not a simple concept in physics. There are so many topics and under those are subtopics. These topics include waves, which is what we will be focusing on today. Sound waves are made very easily, in fact we create them every day. They can be created by smashing two cooking pans together, this…

ANEROID – sensitive component in an altimeter or barometer that measures absolute pressure of the air. -Sealed, flat capsule made of thin corrugated disks of metal soldered together and evacuated by pumping all of the air out of it.…

At some point in time, many people will experience problems with their voice. When speaking, words may sound broken, whispery, strangled or hoarse, and a person may struggle just to sound normal. In most cases, these vocal problems eventually go away, but if they don’t, then this condition may be a neurological disorder known as spasmodic dysphonia. Definition and Facts Dystonia is a neurological movement disorder that can affect the entire body or a specific body part. The primary…