[permalink] [id link]
The LFE channel was originally developed to carry extremely low " sub-bass " cinematic sound effects ( with commercial subwoofers sometimes going down to 30 Hz, e. g., the loud rumble of thunder or explosions ) on their own channel.
from
Wikipedia
Some Related Sentences
LFE and channel
As well, during the 1990s, DVDs were increasingly recorded with " surround sound " processes that included a Low-frequency effects ( LFE ) channel, which could be heard using the subwoofer in home theater systems.
In 1992, Dolby Digital's six-channel film sound format incorporated a single LFE channel, the " point one " in 5. 1 surround sound.
These configurations optionally include the extra low-frequency effects ( LFE ) channel.
refers to the LFE channel, which is also a discrete channel.
5. 1, offered 5. 1-channel support which adds a center channel speaker and LFE subwoofer output, most useful for movie watching.
( The ". 1 " denotes a Low-frequency effects channel ( LFE ) for bass and / or special audio effects.
Before the bass management system there is a Low Frequency Effects ( LFE ) channel.
A common misunderstanding is the belief that the LFE channel is the " subwoofer channel ".
The bass management system may direct bass to one or more subwoofers ( if present ) from any channel, not just from the LFE channel.
Also, if there is no subwoofer speaker present then the bass management system can direct the LFE channel to one or more of the main speakers.
In the original movie theater implementation, the LFE was a separate channel fed to one or more subwoofers.
Home replay systems, however, may not have a separate subwoofer, so modern home surround decoders and systems often include a bass management system that allows bass on any channel ( main or LFE ) to be fed only to the loudspeakers that can handle low-frequency signals.
The salient point here is that the LFE channel is not the " subwoofer channel "; there may be no subwoofer and, if there is, it may be handling a good deal more than effects.
These labels sometimes use the LFE channel to carry a height channel, underlining its redundancy for its original purpose.
This notation, e. g. " 5. 1 ", reflects the number of full range channels ; including a ". 1 " to reflect the limited range of the LFE channel.
2 basic stereo speakers with no LFE channel
5 full-range channels + 1 LFE channel =
3 front channels + 2 side channels + an LFE channel = 3 / 2. 1
LFE and was
After 3 years, LFE discontinued the festival and it was brought home to Chesterton by the Duneland Business Initiative Group in 2009.
LFE and carry
The LFE channel is used to carry additional bass information in the Dolby Digital program, while the subwoofer output is bass information from up to all six channels that has been selected to be reproduced by the subwoofer via a bass management system.
LFE and sub-bass
The LFE channel originated in Dolby Stereo 70 mm Six Track film prints, as a way of providing louder bass and sub-bass effects, without detracting from the quality of the standard audio channels.
LFE and sound
The LFE is a source of some confusion in surround sound.
Later formats such as Dolby Digital retained the LFE channel, although this is more through convention and backwards compatibility than necessity, as digital formats have greater dynamic range than the magnetic analogue recordings on 70 mm prints, and modern sound processors have a bass management system to redirect bass from all channels to a subwoofer.
LFE and effects
The low-frequency effects ( LFE ) channel is the name of an audio track specifically intended for deep, low-pitched sounds ranging from 3-120 Hz.
Many typical home theater systems, especially " home theater in a box " systems, are incapable of accurately reproducing LFE effects in the 20 Hertz range.
The basic and most common version of the format is a 5. 1-channel system, similar to a Dolby Digital setup, which encodes the audio as five primary ( full-range ) channels plus a special LFE ( low-frequency effects ) channel for the subwoofer.
LFE and with
Over seven full-range 24-bit / 96 kHz discrete channels are supported ( plus a LFE channel, making it 7. 1 surround ) along with the HDMI interface.
RCA manufactured and maintained the electronics utilizing an RCA 501 computer with 32k " high speed memory ", 5-76KC 556 bpi 3 / 4 " tape drives and a 200 track random access LFE drum to maintain wire connection lists at RCA's Astro Electronics Division facility in Hightstown, NJ.
LFE and subwoofers
The bass management system may direct bass to one or more subwoofers ( if present ) from any channel, not simply the content of the LFE channel.
LFE and Hz
The 25 and 35 Hz control tones are present on the LFE track even though original audiences never heard these tones.
LFE and .
Some record labels such as Telarc and Chesky have argued that LFE channels are not needed in a modern digital multichannel entertainment system.
They argue that all available channels have a full frequency range and, as such, there is no need for an LFE in surround music production, because all the frequencies are available in all the main channels.
LFE and on
Note, however, that encoders and decoders support numerous channel combinations, and stereo, four-channel, and four-channel + LFE soundtracks have been released commercially on DVD, CD, and Laserdisc.
The. 1 LFE subwoofer track is mixed into the discrete surround channels on the disc and recovered via low-pass filters in the theater.
channel and was
Henrietta was discovering in the process of writing, as the born writer does, not merely a channel for the discharge of accumulated information but a stimulus to the development of the creative powers of observation, insight and intuition.
Then the fact that the lower channel line was pierced had further forecasting significance.
When the work was finished, the river was turned back into its usual channel and the captives by whose hands the labor had been accomplished were put to death that none might learn their secret.
Although the hardware is limited to four separate sound channels, software such as OctaMED uses software mixing to allow eight or more virtual channels, and it was possible for software to mix two hardware channels to achieve a single 14-bit resolution channel by playing with the volumes of the channels in such a way that one of the source channels contributes the most significant bits and the other the least.
To store matte information, the concept of an alpha channel was introduced by Alvy Ray Smith in the late 1970s, and fully developed in a 1984 paper by Thomas Porter and Tom Duff.
It had feature limitations such as being unable to output more than one channel of sound, ( and provided fewer Envelope-shaping options ) where the BBC was capable of three-way polyphony ( plus one noise channel ) and the inability to provide teletext mode.
In practice a technique called vestigial sideband is used to reduce the channel spacing, which would be at least twice the video bandwidth if pure AM was used.
The Murray River was formed when Totyerguil the hunter speared Otjout, a giant Murray Cod, who, when wounded, churned a channel across southern Australia before entering the sky as the constellation Delphinus.
In 2009 radio market share in the Dutch speaking region was 63. 08 % for the VRT channels ( Radio 1, Radio 2, MNM, Studio Brussel and Klara, 23. 13 % for the VMMa channels ( Q-Music and Joe FM ) and 2. 65 % for the Corelio / Concentra joint venture channel ( Radio Nostalgie ).
In 2002, a new survey was carried out on board the Ifremer RV Le Suroit for BlaSON project ( Lericolais, et al., 2003 ) completed the multibeam mapping of this underwater channel fan-delta.
Bede's account of the early migrations of the Angles and Saxons to England omits any mention of a movement of those peoples across the channel from Britain to Brittany described by Procopius, who was writing in the sixth century.
Two years later, WHDH-FM was licensed, and on November 26, 1957, WHDH-TV made its début as an ABC affiliate on channel 5.
) The FCC ordered comparative hearings, and in 1969 a competing applicant, Boston Broadcasters, Inc. was granted a construction permit to replace WHDH-TV on channel 5.
Herald-Traveler Corp. fought the decision in court — by this time, revenues from channel 5 were all but keeping the newspaper afloat — but its final appeal ran out in 1972, and on March 19 WHDH-TV was forced to surrender channel 5 to the new WCVB-TV.
During these experiments, < sup > 261 </ sup > Bh was also identified in the 2n evaporation channel and it was confirmed that < sup > 262 </ sup > Bh exists as two states-a ground state and an isomeric state.
Later a mixer was built for him by Alex Rosner which let him listen to any channel in the headphones independently of what was playing on the speakers ; this became the defining feature of DJ mixers.
He instructed his naval commander, Vice-Admiral François-Paul Brueys D ' Aigalliers, to anchor in Alexandria harbour, but naval surveyors reported that the channel into the harbour was too shallow and narrow for the larger ships of the French fleet.
In April 2008, the channel was renamed " BBC News " as part of a £ 550, 000 rebranding of the BBC's news output, complete with a new studio and presentation.
The channel was named RTS News Channel of the Year in 2006 and again in 2009.
Initially it was difficult to obtain a digital satellite or terrestrial receiver without a subscription to Sky or ONdigital respectively, but now the channel forms an important part of the Freeview package of channels.
0.352 seconds.