Active noise control

these headphone related accidents, a car horn was honked loudly or repeatedly, someone without headphones in would have heard such noise and been warned of the fatal danger that was approaching (www.npr.org). Many states recommend that you play music as low as possible while wearing headphones and walking, jogging, skating, or skateboarding to prevent these types of devastations (police.colorado.edu). This recommendation is placed with good reason in hopes of protecting…

In 2012 a study out of Newcastle University revisited the land of gross noises and subjected 16 people to 74 different sounds from running water to the scrape of knives on glass, asking them to rank them on a scale from pleasant to excruciating. [pic: PD] Once again, the worst of the sounds fell in that bad-Hertz sweet spot, but more interesting than how the offensive sounds ranked was what they did to the peoples’ brains. With the help of an MRI machine, researchers kept tabs on which brain…

the familiar and the ordinary strange again--as the Russian formalists used to put it, by "alienating" the reader from the tyranny of the compellingly familiar. It offers alternative worlds that put the actual one in a new light.” (Bruner, pg. 12) Good sound design, through surprise, expectation, and silence serves well the purpose of vanquishing, with fiction, the compellingly familiar tyrant of quotidian reality. Everyone loves a good bang. Thus, with a good sound design, the unexpected…

Core concepts on transistors, amplifiers, oscillators, digital logic, and control theory, all started to come together like pieces of a puzzle reviling cohesive relationships. I was able to see the viscid relationships between concepts learned in different classes, and consequently my appreciation for the field blossomed. Under the advisement of Dr. Lee, I volunteered to do research from other departments since no such opportunities existed in ours. Although my curriculum didn't put emphasis on…

Now my dad stopped chewing tobacco around a year ago. Great, I know! To fill the empty void of chewing tobacco he has taken up chewing gum, while I am happy that this change has been made, it can be known to drive me crazy. I’m not sure what’s worse the snapping of the gum after a bubble or the chewing noise in a small quiet room or car, either way it drives me up a wall. Now the noise of gum has bothered me since like middle school, and I know it bothers quite a few of people, but it’s just…

Noise According to health and safety authority (2017) Noise is defined as unfavourable sound or too loud sounds such as blazer, phones, ambulance, wheelchairs, confused patients, radio, television in rest room and trolleys. The impact of sounds on hearing can be short term or long term. Short term deafness frequently happens after leaving a noisy place. The fact that hearing getting better within less hours, this should be not rejected as it is a symptom that leads to such sounds could be long…

I awoke quickly in the pitch black bedroom from a sound down the hall, my best friend laying beside me still in a deep sleep. As I lay still, (deathly still, deathly quiet, lifeless) I think to my self, “ am I hearing things, have I gone crazy?” (delirious, insane) I hear the noise coming from down the hall, I jump up and cautiously walk toward the bedroom door, the slightest light shining off from my alarm clock is glaring threw the dark (Lightless) bedroom. Grasping the bedroom door handle,…

Before embarking on my soundwalk, I had a few basic expectations of sounds I would encounter, mostly based on prior memories of wandering MIT’s campus. I knew what the soft, low murmurs should sound like when traversing the corridors. I knew to expect the clip-clop of hard stepping walkers in the silent tunnels, and the high pitched buzzing and whining of electrical components overhead. Outside, the wind would make soft, mid pitched whuuu and shhh noises, which would serve as background for…

not what the piece about. I believe that John Cage's 4 "33" is about silence and possibly time. The first value that I think is significant to the composition is silence. When I think of the word silence, nothingness comes to mind. What I mean by nothingness is no noise; you hear not one person or any other kind noise around you.…

Since there are 4 phases it is called as 4-PSK or Quadrature PSK systems [6][7]. 3. QAM: QAM improves the noise immunity of the system by allowing the signal vectors to differ, not only in their phase but also in amplitudes. It utilizes carrier phase shifting and synchronous detection to permit two DSB signals to occupy the same frequency band. The two DSB signals are orthogonal to each other. IV. NOISE AND CHANNELS IN COMMUNICATION SYSTEMS A. Noise in Communication Systems The term…