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Phase (waves) - Wikipedia, the free encyclopedia Phase difference is similar to phase shift, but more likely to be applied in the context of two signals, particularly when neither is a standard reference. Out of phase — this is analogous to two athletes running around a race track at the same speed and direction but starting at different positions on the track. The wave function is complex and since its square modulus is associated to probability of observing the object, the complex character of the wave function is associated to the phase. en.wikipedia.org /wiki/Out_of_phase   (840 words)

Phase, part 1 Phase is a time relationship between two sounds, waveforms, or signals in a circuit. When sounds are out of phase, the effect can be a lack of definition, poor imaging or placement of sounds, lack of bass or low-frequency energy, an overall thinness or weakness of sound level, or combinations of these things in varying degrees. The actual effect is dependent on the degree of phase shift and at what frequencies it occurs, as well as the nature of the source sounds and the relative loudness of each. www.music.columbia.edu /cmc/courses/g6630/Phase.html   (838 words)

Sweetwater inSync Nevertheless this is often referred to as "out of phase." A similar thing happens when you reverse the polarity of the speaker leads to one speaker in a two-speaker setup. No time delay was introduced, yet we often refer to this as "out of phase." This confusion occurs because when viewed on a display like an oscilloscope waveforms that are 180 degrees out of phase with each other will not look any different than two that are polarity reversed. While it is technically true that any two signals not 100% in phase with each other could be referred to by the somewhat generic phrase, "out of phase," we generally don't use that terminology until the signals approach a 180 degree phase relationship with each other. www.sweetwater.com /insync/word.php?find=outofphase   (449 words)

turner audio   (Site not responding. Last check: 2007-10-10) If you understand when audio signals are in phase or out of phase, you're well on your way to solving these problems before they occur on location. A good example of a potential phasing problem is when two or more omni-directional microphones are used in close proximity to each other for a typical panel discussion. If you find mics wired out of phase you can have the wiring corrected by a service technician or mark the offending mic with tape and use it with a phase reversal barrel or phase reversal adapter cable. www.turneraudio.com /tech/phase.html   (1248 words)

3 Phase Basics   (Site not responding. Last check: 2007-10-10) Three phase is nothing more than single phase with 2 extra coils slightly out of phase with first. Each coil set is a "phase" of the alternator so when you measure voltage,ohms or current to test one phase of the alternator you would measure the "phase". The amps remain the same as the phase measurement because the star is basically series'd to another phase. www.windstuffnow.com /main/3_phase_basics.htm   (815 words)

PHASE DISTRIBUTION   Phase is measured in degrees of a circle from zero to 360 degrees. (in/out of phase): ideally, the phase should be fully distributed...equal amounts of in-phase and out of phase components. The Phase distribution in the polar view above indicates an individual who is focused primarily on thinking about rather than expressing, acting, or manifesting their thoughts. harmonicresolution.com /PhaseDistribution.htm   (438 words)

THX Ltd. - Speaker Phase   (Site not responding. Last check: 2007-10-10) Proper speaker phase is not only important for the front left and right channels, but the center and surround channels as well. “In-Phase” will produce a sound image centered between the channels under test while “Out-of-Phase” will produce a sound image that is wide and dispersed and difficult to localize. If you have a 7.1 system, the phase tests for the surround channels will appear in the surround back channels during the in-phase test and in the surround left and surround right channels during the out-of-phase test. www.thx.com /mod/techlib/phase.html?print=1   (466 words)

Passive Radiators - out of phase question - Club Polk It is pretty well known that you do not want your speakers wired out of phase, and that a general rule of thumb is that if you have a subwoofer in the front and one in the rear, you will have to set the rear subwoofer 180deg out of phase with the front, generally speaking. Similarly, you WANT the rear subwoofer out of phase with the front, when the front subwoofer driver is moving out, you want the rear subwoofer driver moving in, that way they work together and not against each other. This isn't a phase problem though since there is no electrical signal causing them to push against each other in a cancellation mode, only the weight of the PR giving back pressure for the woofer to load against helping to keep the driver from bottoming. www.polkaudio.com /forums/showthread.php?t=25540   (1825 words)

Absolute Phase: A Prerequisite to Optimum Performance The term phase is most often used to describe the orientation of the + and - terminals of the speaker and amplifier. If a phase reversal switch is not available on the preamp, one must invert phase at the amplifier or speaker terminals. The recording must be phase coherent to begin with (which usually suggests a minimalist recording technique using only a pair of microphones). www.gcaudio.com /resources/howtos/absolutephase.html   (919 words)

The Out of Phase Blues Greats... - Les Paul Forum   (Site not responding. Last check: 2007-10-10) At the 1:18 mark you hear the tone change and then his solo at 3:17 is the out of phase sound as well. Whether it's the '59 V is or not, this is out of phase tone. If the V is not out of phase, he would have to be using other guitars. www.lespaulforum.com /forum/showthread.php?p=1421406   (1872 words)

Out of phase cranks I have a burley Rock and Roll and the cranks are slightly out of phase. While there are some teams who will put the cranks one or two teeth out of phase, once you get beyond that you run a very high risk of driving your stoker's feet into logs, rocks, trees and other obstacles commonly found on the trail. I noticed that our two cranks are slightly out of phase, due to there being a finite number of teeth on each crank, and their positions. www.bikeforums.net /archive/index.php/t-121324   (3957 words)

Phase Splitter Therefore, a phase splitter is necessary to produce two almost equivalent signals that are 180 degrees out of phase from one another. Here, the first triode functions similarly to the pre-amplifier triode in that it produces a signal that is 180 degrees out of phase with the input signal. However, the circuit functions so that a signal that is in phase with the input is output by the second triode. www.tjhsst.edu /~dbao/prog_phase.htm   (267 words)

Easy "out-of-phase" telecaster wiring? - The Gear Page You can wire up your guitar so the pickups are electrically out of phase but the sound will be pretty thin and bright.A common Tele wiring setup is a 4 position switch so the combination of both series and parallel is available. I was under the impression that there was a way to do this (eg, Mark Knopfler's "out of phase" les paul sound achieved with a 2 pickup design instrument in the middle position). Yes, and to clarify I am using the term "out of phase" with inverted commas because while it is not electronically correct some folk refer to the in between sound as an out of phase sound. www.thegearpage.net /board/showthread.php?p=1752822#post1752822   (518 words)

National Phase Out of Leaded Petrol Now, the number of cars that require LRP has diminished to the point that it is becoming increasingly unviable for fuel suppliers to produce, store and distribute the fuel, and for service stations to supply it. Accordingly, motorists should expect that LRP will be phased out of the market over time, and to recognise that as the end of 2004 there will be very limited availability of LRP around Australia. The Federal Chamber of Automotive Industries, the Australian Automobile Association, and the Australian Institute of Petroleum have produced a brochure entitled The phase out of lead replacement petrol (LRP): Information for motorists. www.deh.gov.au /atmosphere/fuelquality/standards/petrol/phase-out.html   (417 words)

Avid Community Exchange - Audio Phase problems in timeline The audio will be out of Phase on the scope in the timeline and be fine in the master clip. Slight out of phase can't be really ear detected as long as the audio monitoring is in stereo. The phase problem may be caused by gain changes or audio effects if they are applied to only one side of a stereo pair of tracks. www.avid.com /exchange/forums/159798/ShowThread.aspx   (1129 words)

Drive Shaft out of Phase - Team Camaro Tech I was having work done on my transmission and I was told my drive shaft was out of phase. I had mine put back in phase when I had is shortend and balanced. my yokes were originally out of phase, when i had the driveshaft shortened tit came back in phase, no difference that i can tell. www.camaros.net /forums/showthread.php?p=700062   (247 words)

The Phase out of Methyl Bromide: An Economic Quandary   (Site not responding. Last check: 2007-10-10) The Phase out of Methyl Bromide: An Economic Quandary The EPA has targeted this chemical for a phase out by the year 2001. It is not clear that the costs of having the chemical have been shown to outweigh its benefits. www.muhlenberg.edu /depts/chemistry/methbrom/mbphase.htm   (1733 words)

PROFESSIONAL SOUND - Sound Advice - Curing An Out-of-phase PA   (Site not responding. Last check: 2007-10-10) When you have come to the conclusion that the bottom end is out of phase pull out your trusty Brooks Sirens Systems (BSS) phase checker and phase test the bottom end. When you have the proper phase of all the bottom end components you will then have no phase shift between components, collectively producing coupling cabinets. Starting with the bottom end again, because in my opinion, it is always the easiest to perceive it being out of phase. www.professional-sound.com /sound/aug981.htm   (607 words)

XMFan.com :: #1 Fan Site of XM Satellite Radio :: XM Sometimes "Out of Phase"? In the worst case situation, during a 180 degree phase shift, the central image appears to have a "hole" in it. In the case of the Delphi modulator, the phase errors are variable and dependent on the source phase relationhips. Some songs sound perfectly fine while in others the vocals or a particular instrument have that "out of phase" sound, or sometimes the vocals sound faint or what I'd call "thin." I don't know the science behind how XM encodes their music but perhaps this effect is some byproduct of the encoding process. www.xmfan.com /viewtopic.php?p=51379   (1273 words)

Out of Phase Quirk in FhG 1.0/1.2 build 63i Codec Interestingly, the internal codec in Producer Pro 2.1 shows some ripple out past 16kHz, implying that the two codecs are slightly different. Another interesting thing about this codec (plot not shown) is that the cutoff for the normal (non-inverted) sweep occurs out at 20kHz. For some reason, the cutoffs for sweeps are not the same as the cutoffs for actual music. ff123.net /outofphase.html   (350 words)

Phase Out of Novell IPX Protocol on Campus Network, NUIT, Northwestern University Phase Out of Novell IPX Protocol on Campus Network Novell-based IPX routing to be phased out by NUIT (11/04) ( Novell-based IPX routing to be phased out by NUIT (10/02) ( www.it.northwestern.edu /transitions/2005/phase_ipx.html   (256 words)

FanFiction.Net : Profile : Out Of Phase   (Site not responding. Last check: 2007-10-10) It's too bad people were so burnt out by the other, less loveable spin-offs. I'd rather live my life as if there is a God and die to find out there isn't, than live my life as if there isn't a God and find out there is. Tyrants and Kings trilogy by John Marco-- Not a fantasy story in the line of elves and dragons but a world at war with itself. www.fanfiction.net /~outofphase   (731 words)

Halfbakery: Out of phase electric bike I suggest that instead, the motor should drive the chain via a pair of eliptical gears, each at 120 degrees leading and lagging the footpedals. In the same way that three phase electricity generates a (nearly) smooth power output in industrial motors, this drive mechanism will deliver easy and complementary power. I remember some bicycles had an elliptical chainwheel for the rider. www.halfbakery.com /idea/Out_20of_20phase_20electric_20bike   (310 words)

Phase out of Business Jets - SoundInitiative Groups, organizations, businesses or government entities that agree with Sound Initiative's mission of encouraging Congressional action to phase out the use of Stage 1 and Stage 2 aircraft are invited to join our effort. Members of the coalition will be asked to work with their own Members of Congress, asking them to support our goal. Phase out of business jets brough to you by sound initiative click here to phase out of business jets Phase out of business jets www.soundinitiative.org /join.htm   (127 words)

Integral Software Out of Phase - Specifications, pictures, prices, links, reviews and ratings Basically allows you to define instruments, based on either a sample (imorts aiff, wav, and a user-definable raw for importing Akai, Kurzweil, Emu, and so forth) or a algortihmic wavetable. If you're a programmer you can pick up on the langauge pretty easily (I wrote a module to emulate an 8-vco analog synth with pulse-width modulation, phase distortion, and other goodies in less than an hour). Demo files accompaning v1.3 are useful and contain some pretty good algorithms (a few analog routines, FM, phase distortion, sample filtering, ring mod, fourier synthesis, basic additive, and a few filtering examples). www.sonicstate.com /synth/is_outofphase.cfm   (426 words)

Worldwide Phase-out of Leaded Gasoline: An International Environmental Health Priority Both developed and developing countries that have already phased out leaded gasoline have demonstrated phase-out is practicable, cost-beneficial, and can be done quickly. The international commitment, technology, and resources for expeditious completion of the worldwide phase-out of leaded gasoline are in place. What is needed now is the political will to take advantage of this opportunity and to carry out existing commitments to eliminate leaded gasoline immediately in order to help move to a sustainable future and provide a precedent-setting success story of international cooperation. www.globalleadnet.org /policy_leg/policy/health.cfm   (148 words)

BBC - h2g2 - Out of phase - U671078   (Site not responding. Last check: 2007-10-10) For those who showed some exceptional ability, there was an inexorably mated factor - they were, and are, perceived as being "out of phase" with others. To artificially pull out a few characteristics at one point and label a person “bi-polar” or “autistic” or “attention-deficit” is to fall into the trap that language (that separate, sentient life form) has laid for us: Categorization. A server hustles out of the kitchen with the last of the plates and cutlery. www.bbc.co.uk /dna/h2g2/alabaster/U671078   (1674 words)

Shane’s Programs Until of course, I get TW, in which case everything will have to start over. Using the probability and statistics information now loaded into my mind, 8/13/06- BattleTech Total Warfare is now out. All that is left is to construct my own vorpal sword, so I can walk around going "snicker-snack!" Oh and before that, I was camping out in the California White Mountains for two weeks, where I cored trees, looked at stars, and bought the coolest pair of sunglasses to have ever existed. www.u.arizona.edu /~ssmith4   (259 words)

The OOPS Effect The OOPS effect can be used on all of your stereo recordings to hear them in a way you've never heard them before. Now, imagine two signals that are identical, except they are "out of phase" with each other, that is, that when one signal is having a postive wave peak, the other is having an identical negative peak. The positive peak of the first signal tries to make the speaker move out, but as it does, it is counteracted by the equal but opposite negative peak from the second signal, which tries to pull the speaker cone back in, so no sound results. www.beatletracks.com /btoops.html   (829 words)

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