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Topic: Kbit


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In the News (Mon 7 Dec 09)

  
  Kilobit - Wikipedia, the free encyclopedia
A kilobit is a unit of information, abbreviated kbit, sometimes also kb.
In the context of telecommunication transmission speeds, the decimal definition 1 kbit = 1000 bit is used uniformly.
The kilobit is closely related to the kibibit, which is unambiguously equal to 2
en.wikipedia.org /wiki/Kbit   (158 words)

  
 Bitrate - Wikipedia, the free encyclopedia
Similarly, hertz, the SI unit of frequency, is not precise without some context, such as the number of bits carried per cycle.
4 kbit/s — minimum necessary for recognizable speech (using special-purpose speech codecs)
VoIP Bandwidth Calculator - Given a codec type and sample period calculate the actual IP and Ethernet bandwidth.
en.wikipedia.org /wiki/Bit_rate   (883 words)

  
 [No title]   (Site not responding. Last check: 2007-10-24)
At transmission rates of 64 kbit/s these two bits are required for data and therefore monitoring of a circuit right up to the NTU (in-service monitoring) is not possible.
At 2048 kbit/s it supports 30 "B" channels and one "D" channel and at 1544 kbit/s is supports 23 "B" channels and one "D" channel; all channels operate at 64 kbit/s.
The 80 kbit/s serial stream is demultiplexed inside the NTE into a 64 kbit/s data/speech channel, an 8 kbit/s data channel and an 8 kbit/s signalling channel.
www.textfiles.com /magazines/IBP/ibp-0020.txt   (2055 words)

  
 G.722
The latter two modes allow an auxiliary data channel of 8 and 16 kbit/s respectively to be provided within the 64 kbit/s by making use of bits from the lower sub-band.
The 64 kbit/s (7 kHz) audio encoder includes a transmit audio part which converts an audio signal to a uniform digital signal which is coded using 14 bits with 16 kHz sampling and a SB-ADPCM encoder which reduces the bit rate to 64 kbit/s.
The 64 kbit/s (7 kHz) audio encoder uses 64 kbit/s for audio coding at all times irrespective of the mode of operation.
www.vocal.com /data_sheets/g722.html   (443 words)

  
 RFC 4040 (rfc4040) - RTP Payload Format for a 64 kbit/s Transparent Call
For such applications, there is a necessity for a transparent relay of 64 kbit/s data streams in real-time transport protocol (RTP) [4] packets.
This mode is often referred to as "clear-channel data" or "64 kbit/s unrestricted".
The primary function of this payload format is to add a transparent transport for a 64 kbit/s data stream.
www.faqs.org /rfcs/rfc4040.html   (1670 words)

  
 [No title]
Nx64 kbit/s data stream handling Nx64 kbit/s with N>1 SHALL be an optional enhancement of the 64 kbit/s case.
This parameter is mandatory for Nx64 kbit/s, with N>1.
The primary function of this profile is to add a transparent transport for a 64 kbit/s or Nx64 kbit/s data stream.
www.cs.columbia.edu /~hgs/rtp/drafts/draft-kreuter-avt-rtp-clearmode-01.txt   (1202 words)

  
 Recommended MP3 Encoder at 128 kbit/s
(the bitrate defaults to 128 kbit/s; joint-stereo is implied)
Fraunhofer's VBR is based on FastEnc, and produces average bitrates near 128 kbit/s at the 50% quality level.
Speek's page), this setting starts to flange, with metallic background sounds (it is very obvious if the bitrate is reduced to 112 kbit/s).
ff123.net /cbr128.html   (2039 words)

  
 MP3 Pro at 128 kBit/s - Hydrogenaudio Forums
It seems that the SBR is only wotking at 64 kBit/s.
Actually, In Cool Edit Pro 2.1, there is the capability to encode with mp3pro VBR quality 100%, which is supposed to yield bitrates which average about 130 kbit/s.
I also notice that the spectral view of these files shows frequencies higher than 16 kHz, implying that the base frequency is higher than 8 kHz.
www.hydrogenaudio.org /forums/index.php?showtopic=12037&   (1015 words)

  
 MediaCoder Audio Video Glossary
This is very similar to the MP3 joint stereo idea, but 2-3 kbit/s of side info (the Parametric Stereo) is also recorded.
Because only one real audio signal is sent, along with the negligible Parametric Stereo side info, a 24 kbit/s stereo stream of audio and a 24 kbit/s stream of audio with Parametric Stereo will be drastically different in quality.
This makes the overall sound quality sound like a 22 kbit/s per channel piece of audio, rather than a 12 kbit/s piece of audio.
mediacoder.sourceforge.net /glossary/ps.htm   (227 words)

  
 Toll Quality Voice - 32 kbit/s ADPCM MIME Sub-type Registration   (Site not responding. Last check: 2007-10-24)
Recommendation G.726 [1] defines the characteristics that are recommended for the conversion of a 64 kbit/s A-law or m-law pulse code modulation (PCM) channel at 8000 samples/second to and from a 40, 32, 24 or 16 kbit/s channel.
Recommendation G.726 was prepared by Study Group 15 of the Telecommunications Standardization Sector of the International Telecommunication Union (ITU-T) and was approved under the ITU's Resolution No. 2 procedure on the 14 of December 1990.
CCITT Recommendation G.726 [1] describes the algorithm recommended for conversion of a 64 kbit/s A-law or u-law PCM channel to and from a 32 kbit/s channel (this is the same algorithm as described in the deprecated G.721).
xml.resource.org /public/rfc/html/rfc2422.html   (910 words)

  
 Tektronix MBD: Products > K4305/K4315 Digital Analyzer : Characteristics
PRBS signal at the 64-kbit/s codirectional interface or PRBS signal at the RS-422 interface (n x 64 kbit/s).
The PRBS signal is extracted from the 2048-kbit/s signal (64 kbit/s or n x 64 kbit/s).
A 2048-kbit/s signal is generated with the PRBS signal in a 64-kbit/s time slot or in n x 64-kbit/s time slots.
www.tek.com /Measurement/Products/catalog/k4305_15/specs.html   (969 words)

  
 Obsidian Forum Community -> Music is degraded to *MONO* 10kHz @ 48 kbit/s?!
If the music were encoded in standard 128 kbit/s STEREO, it would just need an extra 41 MB (2.7x more bytes) -- which would have easily fit on the 4 game CDs.
It is well-known that the MP3 codec utterly fails at lower bitrates (less than 128 Kbit/s).
48 kbit/s in MONO is sufficient for speech (I can accept that), but no sane person would encode music in that same quality.
forums.obsidianent.com /index.php?showtopic=30382   (3335 words)

  
 Tektronix MBD: Products > K4305/K4315 Digital Analyzer : Intro
The K4305/K4315 series is designed to provide an ideal tool for commissioning and fault finding in universal multiplexors and digital transmissions equipment operating at data speeds ranging from 1.2 kbit/s to 2 Mbit/s.
The test can be performed both ways, either transmit 2 Mbit/s and receiving 64 kbit/s or vice versa.
The quality of multiplexing/demultiplexing is verified by monitoring the bit error rate in the 64 kbit/s channel and the occurrence of different alarms.
www.tek.com /Measurement/Products/catalog/k4305_15   (560 words)

  
 [No title]   (Site not responding. Last check: 2007-10-24)
Detailed description: Defines a frame structure for audiovisual teleservices in single or multiple B or H0 channels or a single H11 or H12 channel which makes the best use of the characteristics and properties of the audio and video encoding algorithms, of the transmission frame structure and of the existing recommendations.
Allows synchronisation of multiple 64 kbit/s or 384 kbit/s connections and the control of the multiplexing of audio, video, data and other signals within the synchronised multiconnection structure in the case of multimedia services such as videoconferencing.
Signalling procedures are required to establish a compatible mode upon call set-up, to switch between modes during a call and to allow for call transfer.
www.cs.cmu.edu /afs/cs/project/mse-2/www/projPages/tech-research/standards.txt   (6964 words)

  
 [No title]   (Site not responding. Last check: 2007-10-24)
AOL is feeding digital directly into their end, and the phone company's equipment doesn't limit this digital signal in the same way.
Obviously 56 kbit isn't harmful to anyone or anything, so these laws are probably going to be repealed or modified in the next year or so to allow the full bandwidth 56 kbit transmissions.
To achieve higher data rates than 64 kbits per second, you MUST have a new higher bandwidth phone line installed to your home (and pay for it) for a better connection to the internet.
www.ski-epic.com /randomstorage/modem.html   (633 words)

  
 [No title]
ITU-T Definition Recommendation G.726 [G726] defines the characteristics that are recommended for the conversion of a 64 kbit/s A-law or mu-law pulse code modulation (PCM) channel at 8000 samples/second to and from a 40, 32, 24 or 16 kbit/s channel.
The conversion is applied to the PCM bit stream using an adaptive differential pulse code modulation Parsons Expires: 16/05/01 1 32 kbit/s ADPCM November 16, 2000 (ADPCM) transcoding technique.
MIME Definition 4.1 audio/32KADPCM CCITT Recommendation G.726 [G726] describes the algorithm recommended for conversion of a 64 kbit/s A-law or mu-law PCM channel to and from a 32 kbit/s channel(this is the same algorithm as described in the deprecated G.721).
www.ietf.org /proceedings/01mar/I-D/vpim-vpimv2r2-32k-00.txt   (736 words)

  
 Untitled Normal Page
I chose 128 kbit/s because it is a popular bitrate, as well as an interesting one to me: the bitrate is high enough to sound quite good to some people using certain formats, but low enough to sound quite bad to others.
I risk exposing myself to criticism that I am stacking the deck against WMA, but then again, it was Microsoft's own choice to optimize its codec for low bitrates (i.e., 64 kbit/s) at the apparent expense of higher bitrates.
I chose CBR mode for Liquifier because its VBR mode encodes at too high of an average bitrate unless the frequency bandwidth is set lower than desirable (a little less than 16 kHz).
ff123.net /128tests.html   (1214 words)

  
 Press Release - Xicor Announces Industry's Fastest 32 Kbit EEPROM With SPI Interface (23-Jun-1997)   (Site not responding. Last check: 2007-10-24)
The X25330 transfers data at 5 Mbps which is 67% faster than existing 32 Kbit SPI devices.
In addition, the new chip has two memory protection modes that reduce the chip count in customer designs by eliminating the need for an extra EPROM or ROM for sensitive read-only data.
The X25330 can be used to increase the speed of existing products since it is a pin-for-pin replacement for existing 32 Kbit SPI EEPROM memories.
www.intersil.com /pr/shell/0,1091,1244,00.html   (750 words)

  
 Shaykh Nuh Keller - Home Page
The Prophet (Allah bless him and give him peace) was 40 years of age when he received revelation.
The worship instinct is really in fact the fear of death.
If the human race started from Adam and Hawa and their offspring, all those offspring are brothers and sisters.
www.masud.co.uk /ISLAM/nuh/default.htm   (1115 words)

  
 192 kbit/s listening test at SoundExpert - Hydrogenaudio Forums
New 192 kbit/s listening test at SoundExpert is scheduled to start July 15.
It showed surprisingly good results at 320 kbit/s and I decided to test it at other bitrates in order to check whether it is realy good or there is a flaw in testing methodology.
Theres nothing to test at those bitrates, so theres clearly a problem in their methodology.
www.hydrogenaudio.org /forums/index.php?showtopic=46126&st=0   (2506 words)

  
 [No title]   (Site not responding. Last check: 2007-10-24)
The Dolby Digital vs DTS debate remains a long standing, insoluble debate among home theater enthusiasts and "Audiophiles" on the web (via arenas such as usenet groups) and elsewhere.
The argument for Dolby Digital: "Dolby has a more efficient codec that doesn't need the extra bits to create an accurate recreation of the original sound." This argument maintains that the audio data left out by Dolby Digital isn't really heard by the human ear, so the extra data isn't missed on playback.
Note: For 6-channel surround sound, Dolby Digital bitrates generally range from 384 kbit/s to 448 kbit/s (although capable of 640 kbit/s) while DTS bitrates range from 768 kbit/s to 1.5 Mbit/s (1536 kbit/s).
www.robertkaye.org /?p=brcbeta   (877 words)

  
 Serial EEPROM is 512 kbit I2C compatible., Microchip Technology, Inc.
The 24LC512, 24AA512, and 24FC512 are implemented in the company's advanced PMOS Electrically Erasable Cell (PEEC) process technology, enabling Microchip to offer high-density, low-power EEPROM devices in one of the thinnest packages available (0.9mm).
The 6mm x 5mm DFN package enables designers to use a 512 Kbit serial EEPROM in low-headroom applications while reducing cost and increasing available board space.
Users currently utilizing Microchip's 128 Kbit or 256 Kbit EEPROM memory devices now have the option to design in a higher-density EEPROM while retaining the same footprint.
news.thomasnet.com /fullstory/20034/rsi   (1037 words)

  
 Lucent Technologies modem chipset supports extended 33.6 kbit/s data rate   (Site not responding. Last check: 2007-10-24)
The ROM-coded extended rate V.34 modem chipset offers the higher 33.6 kbit/s line speeds and has been demonstrated to boost V.34 modem transmissions by 4.8 and 2.4 kbit/s respectively.
The ITU standards-compliant chipset, which is fully interoperable with 33.6 kbit/s modems from leading manufacturers, also supports digital simultaneous voice and data (DSVD), full-duplex speakerphone, telephone answering and other popular modem feature capabilities.
Extended-rate V.34 is available as a two-chip data pump or as a three-chip complete modem chipset including a microcontroller.
www.lucent.com /press/0396/960322.mea.html   (443 words)

  
 Connection Services for Distance
DSL or "digital subscriber line" - The download speed of DSL ranges from 128 kbit/s (kilobits per second) to 24,000 kbit/s depending on DSL technology and service level implemented.
Typically, DSL has a speed of 1,500 kbit/s.
Some components of WebCT, such as E-packs, may require higher internet connection speeds.
faculty.nmu.edu /ims/alliance_connections.htm   (153 words)

  
 MPEG-4 Audio verification test results: Audio on Internet
The MPEG-4 Audio coding tools cover a bit rate range from 2 kbit/s to 64 kbit/s with a corresponding subjective audio quality that needs to be evaluated.
It was recognized that the verification tests should first address applications that are potentially of great interest for users.
The highly increasing need for music transmission over networks like the Internet is the background for this test evaluating recent MPEG coders at bit rates suitable for analog modems and ISDN connections.
sound.media.mit.edu /mpeg4/audio/public/w2425.html   (1162 words)

  
 RFC 2422 (rfc2422) - Toll Quality Voice - 32 kbit/s ADPCM MIME Sub-type Re
Network Working Group G. Vaudreuil Request for Comments: 2422 Lucent Technologies Obsoletes: 1911 G. Parsons Category: Standards Track Northern Telecom September 1998 Toll Quality Voice - 32 kbit/s ADPCM MIME Sub-type Registration Status of this Memo This document specifies an Internet standards track protocol for the Internet community, and requests discussion and suggestions for improvements.
ITU-T Definition Recommendation G.726 [G726] defines the characteristics that are recommended for the conversion of a 64 kbit/s A-law or m-law pulse code modulation (PCM) channel at 8000 samples/second to and from a 40, 32, 24 or 16 kbit/s channel.
MIME Definition 3.1 audio/32KADPCM CCITT Recommendation G.726 [G726] describes the algorithm recommended for conversion of a 64 kbit/s A-law or u-law PCM channel to and from a 32 kbit/s channel (this is the same algorithm as described in the deprecated G.721).
www.faqs.org /rfcs/rfc2422.html   (910 words)

  
 KbIT Ltd - Customer Relationship Management, IT Consultancy, Commence Support, Sales, Development and Training   (Site not responding. Last check: 2007-10-24)
KbIT Ltd - Customer Relationship Management, IT Consultancy, Commence Support, Sales, Development and Training
KbIT provides advanced consultancy, support, training and bespoke development services to users, prospective users, PC system builders and dealers of PC based IT systems.
Based in Stafford we support clients throughout the UK.
www.kbit.co.uk   (92 words)

  
 Tiny MSOP Package supports 32 and 64 kbit serial EEPROMS., Microchip Technology, In
This package offers designers an unprecedented level of flexibility when implementing serial EEPROMs in space-constrained applications, making the devices an ideal choice for a wide range of portable, hand-held, telecommunications, computing and automotive designs.
Designers currently using Microchip's PICmicro® microcontrollers with an external EEPROM now have an even smaller and lower cost solution to complete their designs.
Mar 11, 2003 - Serial EEPROM is 512 kbit I2C™ compatible.
news.thomasnet.com /fullstory/7909   (1188 words)

  
 andromeda: jv bg
0:10 · 128 kbit/s · 149 Kb · MP3
0:20 · 128 kbit/s · 310 Kb · MP3
1:00 · 128 kbit/s · 936 Kb · MP3
www.transom.org /sounds/andromeda.php?q=f&f=/2002/guests/jv_bg   (99 words)

  
 CRUX Flight Data Analysis   (Site not responding. Last check: 2007-10-24)
This space experiment is designed to test the SEE characteristics of several types of RAM (256 Kbit and 1 Mbit) devices, as well as power MOSFETs.
SEU data is available for RAM devices from Micron (both 256 Kbit and 1 Mbit), EDI (both 256 Kbit and 1 Mbit), Hitachi/Elmo (1 Mbit) and IDT (256 Kbit).
A sample SEU count plot is available for the IDT 256 Kbit device, for August 11-18, 1994.
radhome.gsfc.nasa.gov /radhome/crux.htm   (233 words)

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