Shopping on line can be easy, simple and save you lots of money. It can also take a lot of your time, frustrate you, and result in unwanted purchases. Now the same can be said for regular high street shopping, but with the vast opportunity presented by the Internet it will pay you to spend a few minutes reading this and understanding how to better optimize your Noise shopping experience:
1. Compare - without doubt the biggest advantage that the Noise offers shoppers today is the ability to compare thousands of Noise at a time. This is a great thing, but not necessarily all the time! Too much can be daunting at times so take advantage of the great comparison sites and where possible let them do the hard work for you.
2. Research - if it has been said it will be on the internet. Ignorance is no longer a justifiable reason for buying the wrong thing. Take the time to research in detail everything that you could possible want to know about
3. Testimonials - don't know anybody that has bought a Noise? Wrong! If the Noise is good the internet will let you know. Use the Internet as a friend and get testimonials before you buy.
4. Questions - Got a question about Noise then search the Forums, FAQ's, Blogs etc. Don't be afraid to ask .....
5. Reputation - Never heard of the company selling Noise? Don't worry, no reason why you should know every company in the world, but you know someone that does! Use the internet to find out what people are saying about Noise and build up a picture of their reputation for sales, returns, customer service, delivery etc.
6. Returns - still worried that even after all of the above your Noise wont be what you want? Check out the returns policy. There is so much competition now that someone, somewhere is bound to offer the terms that you are comfortable with.
7. Feedback - happy with your Noise then let people know, after all you are depending on others people input in your buying decision, so why not give a little back.
8. Security - check for the yellow padlock on the Noise site before you buy, and the s after http:/ /i.e. https:// = a secure site
9. Contact - got a question about Noise, or want to leave a comment then check out the sites contact page. Reputable companies have them and respond.
10. Payment - ready to pay for your Noise, then use your credit card or PayPal! Be aware of companies that don't accept them, there may be genuine reasons but given the huge amount of choice you have when buying online there is no reason at all not to buy via credit card or PayPal.
In common use the word
noise means unwanted
sound or noise pollution. In electronics noise can refer to the electronic signal corresponding to acoustic noise (in an audio system) or the electronic signal corresponding to the (visual) noise commonly seen as '
snow' on a degraded
television or
video image. In signal processing or computing it can be considered
data without meaning; that is, data that is not being used to transmit a Signaling (telecommunication), but is simply produced as an unwanted by-product of other activities. In Information Theory, however, noise is still considered to be
information. In a broader sense, film grain or even advertisements in web pages can be considered noise.
Noise can block, distort, or change the meaning of a message in both human and electronic communication.
In many of these areas, the special case of
thermal noise arises, which sets a fundamental lower limit to what can be measured or signaled and is related to basic physical processes at the molecular level described by well known simple formulae.
Acoustic noise
When speaking of noise in relation to sound, what is commonly meant is meaningless sound of greater than usual volume. Thus, a loud activity may be referred to as
noisy. However, conversations of other people may be called noise for people not involved in any of them, and noise can be any unwanted sound such as the noise of aircraft, neighbours playing loud music, or road sounds spoiling the quiet of the countryside.
For film sound theorists and practitioners at the advent of talkies c.1928/1929, noise was non-speech sound or natural sound and for many of them noise (especially asynchronous use with image) was desired over the evils of dialogue synchronized to moving image. The director and critic René Clair writing in 1929 makes a clear distinction between film dialogue and film noise and very clearly suggests that noise can have meaning and be interpreted: "...it is possible that an interpretation of noises may have more of a future in it. Sound cartoons, using "real" noises, seem to point to interesting possibilities" ('The Art of Sound' (1929)). Alberto Cavalcanti uses noise as a synonym for natural sound ('Sound in Films' (1939)) and as late as 1960, Siegfried Kracauer was referring to noise as non-speech sound ('Dialogue and Sound' (1960)).
Audio noise
In audio, recording, and Broadcasting systems
audio noise refers to the residual low level sound (usually hiss and hum) that is heard in quiet periods of programme.
In audio engineering it can also refer to the unwanted residual
noise (electronic) signal that gives rise to acoustic noise heard as 'hiss'. This signal noise is commonly measured using
A-weighting or ITU-R 468 noise weighting
Electronic noise
Noise (electronic) exists in all circuits and devices as a result of thermal noise, also referred to as
Johnson Noise. Semiconductor devices can also contribute flicker noise and
generation-recombination noise. In any electronic circuit, there exist random variations in
Electric current or
voltage caused by the random movement of the electrons carrying the current as they are jolted around by thermal energy. The lower the temperature the lower is this thermal noise. This same phenomenon limits the minimum
signal level that any
radio receiver can usefully respond to, because there will always be a small but significant amount of
thermal noise arising in its input circuits. This is why radio telescopes, which search for very low levels of signal from
stars, use front-end low-noise amplifier circuits, usually mounted on the
parabolic reflector, and cooled with liquid nitrogen.
External links
- Noise International Sydney. Music for Film and TV
- Aercoustics Engineering Limited. Consultants in Acoustics, Noise and Vibration
- Audio Measuring Articles - Electronics
- Mohr on Receiver Noise: Characterization, Insights & Surprises
- Fundamentals of Electrical Noise
- Noise voltage - Calculation and Measuring of Thermal Noise
- Noise at work European Agency for Safety and Health at Work (EU-OSHA)
In common use the word
noise means unwanted
sound or noise pollution. In
electronics noise can refer to the electronic signal corresponding to acoustic noise (in an audio system) or the electronic signal corresponding to the (visual) noise commonly seen as '
snow' on a degraded
television or video image. In signal processing or computing it can be considered data without meaning; that is, data that is not being used to transmit a
Signaling (telecommunication), but is simply produced as an unwanted by-product of other activities. In Information Theory, however, noise is still considered to be information. In a broader sense, film grain or even advertisements in web pages can be considered noise.
Noise can block, distort, or change the meaning of a message in both human and electronic communication.
In many of these areas, the special case of
thermal noise arises, which sets a fundamental lower limit to what can be measured or signaled and is related to basic physical processes at the molecular level described by well known simple formulae.
Acoustic noise
When speaking of noise in relation to sound, what is commonly meant is meaningless sound of greater than usual volume. Thus, a loud activity may be referred to as
noisy. However, conversations of other people may be called noise for people not involved in any of them, and noise can be any unwanted sound such as the noise of aircraft, neighbours playing loud music, or road sounds spoiling the quiet of the countryside.
For film sound theorists and practitioners at the advent of talkies c.1928/1929, noise was non-speech sound or natural sound and for many of them noise (especially asynchronous use with image) was desired over the evils of dialogue synchronized to moving image. The director and critic René Clair writing in 1929 makes a clear distinction between film dialogue and film noise and very clearly suggests that noise can have meaning and be interpreted: "...it is possible that an interpretation of noises may have more of a future in it. Sound cartoons, using "real" noises, seem to point to interesting possibilities" ('The Art of Sound' (1929)). Alberto Cavalcanti uses noise as a synonym for natural sound ('Sound in Films' (1939)) and as late as 1960, Siegfried Kracauer was referring to noise as non-speech sound ('Dialogue and Sound' (1960)).
Audio noise
In audio, recording, and Broadcasting systems
audio noise refers to the residual low level sound (usually hiss and hum) that is heard in quiet periods of programme.
In audio engineering it can also refer to the unwanted residual
noise (electronic) signal that gives rise to acoustic noise heard as 'hiss'. This signal noise is commonly measured using A-weighting or ITU-R 468 noise weighting
Electronic noise
Noise (electronic) exists in all circuits and devices as a result of thermal noise, also referred to as Johnson Noise. Semiconductor devices can also contribute flicker noise and generation-recombination noise. In any electronic circuit, there exist random variations in Electric current or
voltage caused by the random movement of the electrons carrying the current as they are jolted around by thermal energy. The lower the temperature the lower is this thermal noise. This same phenomenon limits the minimum
signal level that any radio receiver can usefully respond to, because there will always be a small but significant amount of thermal noise arising in its input circuits. This is why
radio telescopes, which search for very low levels of signal from stars, use
front-end low-noise amplifier circuits, usually mounted on the parabolic reflector, and cooled with
liquid nitrogen.
External links
- Noise International Sydney. Music for Film and TV
- Aercoustics Engineering Limited. Consultants in Acoustics, Noise and Vibration
- Audio Measuring Articles - Electronics
- Mohr on Receiver Noise: Characterization, Insights & Surprises
- Fundamentals of Electrical Noise
- Noise voltage - Calculation and Measuring of Thermal Noise
- Noise at work European Agency for Safety and Health at Work (EU-OSHA)
Noise at work – health and safety in the workplace
HSE provides information on noise at work. Over 1 million employees in Great Britain are exposed to levels of noise which put their hearing at risk.
HSE - Publications: Free Leaflets - Noise
health ... For employers. Noise at Work - Advice for employers [236KB] For employees
noise.co.uk - Sound insulation testing - noise and vibration ...
Noise and vibration consultancy practice. Provides details of services available for a variety of industrial and private clients.
NOISE - New Outlooks In Science & Engineering
UK-wide campaign funded by EPSRC to raise awareness of science and engineering among young people.
noise
Noise. is a nonexistent uk organisation providing an infrastructure for arts development on a non-commercial basis.
noise from FOLDOC
noise < communications > Any part of a signal that is not the true or original signal but is introduced by the communication mechanism. A common example would be an electrical ...
Defra, Noise Mapping England
Department for Environment, Food and Rural Affairs. Welcome to the Noise Mapping England website. Due to the graphical nature of this map based project, the information for the ...
noise society
noise hello. we're noise, warwick university 's singular society for electronic and experimental music. forums a-gogo. yes, yessirree thats right, the noise soc forums are now ...
NOISE FESTIVAL 2008
Vote for the best new creative talent aged 25 and under, in film, architecture, fashion, music, design - selected by top UK curators
The London Noise Map
the London road traffic noise map. The London Noise Map Web-viewer that was developed and hosted by Atkins from 2004 to 2008 has now been decommissioned by Defra.
