Hi: Clipping in an audio signal results when an audio device receives a signal that is too loud. The audio signal distorts into square-waves because the "tops" of the signal are flattened. The device cannot handle power levels over a certain level. When this level is exceeded, clipping occurs. Clipping is usually harsher in digital devices than in analog devices. Analog clipping tends to be fuzzy and soft compared to digital clipping. What is the visual-equivalent of "clipping"? Is there a difference between analog and digital in terms of visual-clipping? If so, what is the difference? Auditory-clipping can damage speakers. Can visual-"clipping" damage monitors? Thanks, Radium
Visual "clipping"?
Started by ●September 4, 2007
Reply by ●September 4, 20072007-09-04
In article <1188874984.222039.197660@y42g2000hsy.googlegroups.com>, Radium <glucegen1@gmail.com> wrote:> Hi: > > Clipping in an audio signal results when an audio device receives a > signal that is too loud. The audio signal distorts into square-waves > because the "tops" of the signal are flattened. The device cannot > handle power levels over a certain level. When this level is exceeded, > clipping occurs. Clipping is usually harsher in digital devices than > in analog devices. Analog clipping tends to be fuzzy and soft compared > to digital clipping. > > What is the visual-equivalent of "clipping"? Is there a difference > between analog and digital in terms of visual-clipping? If so, what is > the difference?Clipping causes whites lose all texture -- very similar to overexposed film.> Auditory-clipping can damage speakers. Can visual-"clipping" damage > monitors?No. Prolonged blacks can damage television transmitters, however (video is inverted for transmission, so black requires full power from the transmitter). Isaac
Reply by ●September 4, 20072007-09-04
In article <1188874984.222039.197660@y42g2000hsy.googlegroups.com>, Radium <glucegen1@gmail.com> wrote:> Hi: > > Clipping in an audio signal results when an audio device receives a > signal that is too loud. The audio signal distorts into square-waves > because the "tops" of the signal are flattened. The device cannot > handle power levels over a certain level. When this level is exceeded, > clipping occurs. Clipping is usually harsher in digital devices than > in analog devices. Analog clipping tends to be fuzzy and soft compared > to digital clipping. > > What is the visual-equivalent of "clipping"? Is there a difference > between analog and digital in terms of visual-clipping? If so, what is > the difference?Clipping causes whites lose all texture -- very similar to overexposed film.> Auditory-clipping can damage speakers. Can visual-"clipping" damage > monitors?No. Prolonged blacks can damage television transmitters, however (video is inverted for transmission, so black requires full power from the transmitter). Isaac
Reply by ●September 4, 20072007-09-04
In article <1188874984.222039.197660@y42g2000hsy.googlegroups.com>, Radium <glucegen1@gmail.com> wrote:> Hi: > > Clipping in an audio signal results when an audio device receives a > signal that is too loud. The audio signal distorts into square-waves > because the "tops" of the signal are flattened. The device cannot > handle power levels over a certain level. When this level is exceeded, > clipping occurs. Clipping is usually harsher in digital devices than > in analog devices. Analog clipping tends to be fuzzy and soft compared > to digital clipping. > > What is the visual-equivalent of "clipping"? Is there a difference > between analog and digital in terms of visual-clipping? If so, what is > the difference?Clipping causes whites lose all texture -- very similar to overexposed film.> Auditory-clipping can damage speakers. Can visual-"clipping" damage > monitors?No. Prolonged blacks can damage television transmitters, however (video is inverted for transmission, so black requires full power from the transmitter). Isaac
Reply by ●September 4, 20072007-09-04
In article <1188874984.222039.197660@y42g2000hsy.googlegroups.com>, Radium <glucegen1@gmail.com> wrote:> Hi: > > Clipping in an audio signal results when an audio device receives a > signal that is too loud. The audio signal distorts into square-waves > because the "tops" of the signal are flattened. The device cannot > handle power levels over a certain level. When this level is exceeded, > clipping occurs. Clipping is usually harsher in digital devices than > in analog devices. Analog clipping tends to be fuzzy and soft compared > to digital clipping. > > What is the visual-equivalent of "clipping"? Is there a difference > between analog and digital in terms of visual-clipping? If so, what is > the difference?Clipping causes whites lose all texture -- very similar to overexposed film.> Auditory-clipping can damage speakers. Can visual-"clipping" damage > monitors?No. Prolonged blacks can damage television transmitters, however (video is inverted for transmission, so black requires full power from the transmitter). Isaac
Reply by ●September 4, 20072007-09-04
In article <1188874984.222039.197660@y42g2000hsy.googlegroups.com>, Radium <glucegen1@gmail.com> wrote:> Hi: > > Clipping in an audio signal results when an audio device receives a > signal that is too loud. The audio signal distorts into square-waves > because the "tops" of the signal are flattened. The device cannot > handle power levels over a certain level. When this level is exceeded, > clipping occurs. Clipping is usually harsher in digital devices than > in analog devices. Analog clipping tends to be fuzzy and soft compared > to digital clipping. > > What is the visual-equivalent of "clipping"? Is there a difference > between analog and digital in terms of visual-clipping? If so, what is > the difference?Clipping causes whites lose all texture -- very similar to overexposed film.> Auditory-clipping can damage speakers. Can visual-"clipping" damage > monitors?No. Prolonged blacks can damage television transmitters, however (video is inverted for transmission, so black requires full power from the transmitter). Isaac
Reply by ●September 4, 20072007-09-04
On Sep 3, 8:27 pm, isw <i...@witzend.com> wrote:> In article <1188874984.222039.197...@y42g2000hsy.googlegroups.com>,> Radium <gluceg...@gmail.com> wrote:> > Hi:> > Clipping in an audio signal results when an audio device receives a > > signal that is too loud. The audio signal distorts into square-waves > > because the "tops" of the signal are flattened. The device cannot > > handle power levels over a certain level. When this level is exceeded, > > clipping occurs. Clipping is usually harsher in digital devices than > > in analog devices. Analog clipping tends to be fuzzy and soft compared > > to digital clipping.> > What is the visual-equivalent of "clipping"? Is there a difference > > between analog and digital in terms of visual-clipping? If so, what is > > the difference?> Clipping causes whites lose all texture -- very similar to overexposed > film.What does this look like on a screen?> > Auditory-clipping can damage speakers. Can visual-"clipping" damage > > monitors?> No. Prolonged blacks can damage television transmitters, however (video > is inverted for transmission, so black requires full power from the > transmitter).Prolonged black can damage a monitor/screen? That's weird. White is analogous to the loudest sound a loudspeaker can playback. Black is analogous to a loudspeaker not being feed any signal. When the power-supply of the monitor/screen is turned off, the monitor/ screen is black because it not receiving any voltage. I would think that extremely-bright white would damage the screen because the brightest white results from the highest voltage applied to the Reds, Greens, and Blues [equal intensities of R, G, & B -- if combined -- appear white to our eyes when emitted by an electronic monitor] in a particular area of the monitor/screen. If the voltage exceeds this for prolonged periods of time, that region of the screen will burn out, much like forcing an extremely-high voltage audio signal into a speaker will cause the speaker to short-circuit and the diaphragm to pop and/or melt. Many instructions manual for speakers give direction not to reach or go above the clipping point and clipping damages the speakers. Wouldn't something similar happen to a monitor/screen [whether it's a CRT, plasma, or LCD] if it was forced to display light-intensities beyond its limits?
Reply by ●September 4, 20072007-09-04
"isw" wrote ...> Radium wrote: >> Auditory-clipping can damage speakers. Can visual-"clipping" damage >> monitors? > > No. Prolonged blacks can damage television transmitters, however (video > is inverted for transmission, so black requires full power from the > transmitter).Prolonged bright areas (whether clipped or not) will damage CRT monitors. I have two on the bench right now to have their CRTs replaced because the image is burned-in. They came from a security/survelience application and you can somewhat see the hallway and the doors they were monitoring.
Reply by ●September 4, 20072007-09-04
Radium wrote:> On Sep 3, 8:27 pm, isw <i...@witzend.com> wrote: > >> In article <1188874984.222039.197...@y42g2000hsy.googlegroups.com>, > >> Radium <gluceg...@gmail.com> wrote: > >>> Hi: > >>> Clipping in an audio signal results when an audio device receives a >>> signal that is too loud. The audio signal distorts into square-waves >>> because the "tops" of the signal are flattened. The device cannot >>> handle power levels over a certain level. When this level is exceeded, >>> clipping occurs. Clipping is usually harsher in digital devices than >>> in analog devices. Analog clipping tends to be fuzzy and soft compared >>> to digital clipping. > >>> What is the visual-equivalent of "clipping"? Is there a difference >>> between analog and digital in terms of visual-clipping? If so, what is >>> the difference? > >> Clipping causes whites lose all texture -- very similar to overexposed >> film. > > What does this look like on a screen?An area of just plain white.>>> Auditory-clipping can damage speakers. Can visual-"clipping" damage >>> monitors? > >> No. Prolonged blacks can damage television transmitters, however (video >> is inverted for transmission, so black requires full power from the >> transmitter). > > Prolonged black can damage a monitor/screen? That's weird.TRANSMITTERS. HE SAID TRANSMITTERS.> White is > analogous to the loudest sound a loudspeaker can playback. Black is > analogous to a loudspeaker not being feed any signal.NOT ON A TRANSMITTER. Yeesh. Did you actually read that paragraph AT ALL???
Reply by ●September 4, 20072007-09-04
Richard Crowley wrote:> "isw" wrote ... >> Radium wrote: >>> Auditory-clipping can damage speakers. Can visual-"clipping" damage >>> monitors? >> No. Prolonged blacks can damage television transmitters, however (video >> is inverted for transmission, so black requires full power from the >> transmitter). > > Prolonged bright areas (whether clipped or not) will damage CRT > monitors. I have two on the bench right now to have their CRTs > replaced because the image is burned-in. They came from a > security/survelience application and you can somewhat see the > hallway and the doors they were monitoring.ANY static image for a prolonged time will cause burn-in on a CRT or plasma display. The brighter it is, the less time it takes, but it doesn't have to be pure white for burn to occur. Simply displaying 100% white won't cause instant death of a monitor, however, the way a clipped signal can damage a speaker.
