Showing posts with label noise. Show all posts
Showing posts with label noise. Show all posts

13.1.14

Noise in the workplace

It seems noisy environments have quite a few negative implications:
"But the most problematic aspect of the open office may be physical rather than psychological: simple noise. In laboratory settings, noise has been repeatedly tied to reduced cognitive performance. The psychologist Nick Perham, who studies the effect of sound on how we think, has found that office commotion impairs workers’ ability to recall information, and even to do basic arithmetic. Listening to music to block out the office intrusion doesn’t help: even that, Perham found, impairs our mental acuity. Exposure to noise in an office may also take a toll on the health of employees. In a study by the Cornell University psychologists Gary Evans and Dana Johnson, clerical workers who were exposed to open-office noise for three hours had increased levels of epinephrine—a hormone that we often call adrenaline, associated with the so-called fight-or-flight response. What’s more, Evans and Johnson discovered that people in noisy environments made fewer ergonomic adjustments than they would in private, causing increased physical strain. The subjects subsequently attempted to solve fewer puzzles than they had after working in a quiet environment; in other words, they became less motivated and less creative." (Maria Konnikova The New Yorker 2014)

22.9.13

Russolo - Noise music

The new instruments designed and built by Russolo -  intonarumori:
And you can hear how they probably sounded. Futurists also used noise machines in combination with other instruments: Macchina Tipografica


28.8.13

Noise and Subtractive Synthesis

We use the term noise for:
a) auditory sensation arising in response to non-periodic sound waves/signals, with flat and dense spectral distributions (vibrational/physical frame of reference) 
b) auditory sensation that is undesirable/unpleasant/unintended within a given context, interfering with auditory sensations that are desirable/pleasant/intended (i.e. sounds) within the same context (cognitive/semantic frame of reference, focusing on communication)
 Vassilakis et al lecture notes 

Also see Truax about the meaning of noise


tutorial about using filters for subtractive synthesis (see also section 4-3 & 4-4 Music & Computers). Noise elements are actually used in music often, a very interesting example is the work of Italian composer Luigi Nono. Other examples include Ryoji Ikeda and Carsten Nicolai (alva noto) - Impulse or Fades.

and this is an article explaining different approaches to noise generation refining our understanding of the range of possible sounds: 
Atomic noise