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	Digital Signal 0 - Wikipedia, the free encyclopedia
		Digital Signal 0 (DS0) is a basic digital signaling rate of 64 kbit/s, corresponding to the capacity of one voice-frequency-equivalent channel.
		The DS0 rate forms the basis for the digital multiplex transmission hierarchy in both the European and North American systems, for both the early plesiochronous systems such as T-carrier, and for modern synchronous systems such as SDH/SONET.
		Note that when a T-carrier system is used, robbed bit signaling can mean that a DS0 channel carried over that system is not an error-free bit-stream.
	en.wikipedia.org /wiki/DS0 (208 words)

	Digital signal 0
		Digital signal 0 (DS0): In T-carrier, a basic digital signaling rate of 64 kb/s, corresponding to the capacity of one voice-frequency[?]-equivalent channel.
		Note 2: The DS0 rate may support twenty 2.4-kb/s channels, or ten 4.8-kb/s channels, or five 9.67-kb/s channels, or one 56-kb/s channel, or one 64-kb/s clear channel.
		To carry a typical phone call, the audio sound is digitized at an 8 kHz sample rate using 8-bit pulse code modulation.
	www.ebroadcast.com.au /lookup/encyclopedia/ds/DS0.html (144 words)

	Digital signal processing - Wikipedia, the free encyclopedia
		Digital signal processing (DSP) is the study of signals in a digital representation and the processing methods of these signals.
		Since the goal of DSP is usually to measure or filter continuous real-world analog signals, the first step is usually to convert the signal from an analog to a digital form, by using an analog to digital converter.
		Signals are converted from time or space domain to the frequency domain usually through the Fourier transform.
	en.wikipedia.org /wiki/Digital_signal_processing (1333 words)

	Privateline.com: Telecommunications Fundamentals, Chapter 3: Analog and Digital Transmission
		And with a digital transmission (as opposed to analog) system we are able to manage the quality of the signal by managing the previously discussed transmission impairments.
		Bit is a contraction of the words binary and digit A binary (two-level) signal (1 or 0) is the most common digital signal in the telecommunication industry.
		The rate at which the analog signal is sampled is related to the highest frequency present in the signal.
	www.privateline.com /manual/threeA.html (1592 words)

	Technical Glossary C - E
		DSL technology using digital signal processors to divide the signal into 256 subchannels.
		The equipment, such as a computer or terminal, that provides data in the form of digital signals for transmission.
		Signaling information is sent on the M lead (remembered as "mouth") and received on the E lead (remembered as "ear").
	www.nationaldatamux.com /G30001.htm (708 words)

	Digital data (Site not responding. Last check: 2007-10-10)
		A digital signal passes digital data along wires etc using pulses of electricity.
		Because digital signals are either on or off they are not easily distorted and digital data can be transferred reliably.
		Digital signals are in a form that can be processed by a computer without them having to be converted.
	www.klbschool.org.uk /ict/gcse/theory/hardware/digital.htm (156 words)

	analog-to-digital conversion - a Whatis.com definition - see also: ADC (Site not responding. Last check: 2007-10-10)
		Analog-to-digital conversion is an electronic process in which a continuously variable (analog) signal is changed, without altering its essential content, into a multi-level (digital) signal.
		Digital signals propagate more efficiently than analog signals, largely because digital impulses, which are well-defined and orderly, are easier for electronic circuits to distinguish from noise, which is chaotic.
		In a digital signal processing system, an ADC is required if the signal input is analog.
	whatis.techtarget.com /definition/0,,sid9_gci213760,00.html (286 words)

	What is digital? - A Word Definition From the Webopedia Computer Dictionary
		Computers are digital machines because at their most basic level they can distinguish between just two values, 0 and 1, or off and on.
		Although digital representations are approximations of analog events, they are useful because they are relatively easy to store and manipulate electronically.
		Internally, computers are digital because they consist of discrete units called bits that are either on or off.
	www.webopedia.com /TERM/D/digital.html (556 words)

	FDI DSP - Digital Signal Processing - Design Guide
		A digital filter computes a quantized time-domain representation of the convolution of the sampled input time function and a representation of the weighting function of the filter.
		Digital hardware filters are desirable for high bandwidth applications; the trade-offs are limited design flexibility and higher cost.
		Digital Filters are used primarily when transfer-function requirements have no counterpart in the analog world, or when a DSP already resides on the circuit board to perform other functions.
	www.freqdev.com /guide/dspguide.html (3338 words)

	digital signal processing - a Whatis.com definition - see also: DSP (Site not responding. Last check: 2007-10-10)
		Digital signal processing (DSP) refers to various techniques for improving the accuracy and reliability of digital communications.
		A DSP circuit is able to differentiate between human-made signals, which are orderly, and noise, which is inherently chaotic.
		This is true whether the signals are analog or digital, and regardless of the type of information conveyed.
	whatis.techtarget.com /definition/0,,sid9_gci213898,00.html (422 words)

	Digital Network Interface Software Reference Digital Telephony Overview
		In a T-1 environment, this rate is known as digital signal level 1 or DS-1.
		Signaling is accomplished using two bits called the A-bit and the B-bit.
		When the signaling bits are 0s, the line is on-hook, and when the signaling bits are 1s, the line is off-hook.
	www.comptek.ru /telephony/sr/dni/1313-03-07.html (644 words)

	DS0 - Digital Signaling Zero
		The base for the digital signal X series; transmits digital signals over a single channel at 64 Kbps.
		Digital Signal 0: 64 kbps digital representation of voice.
		Digital Signal 0, equivalent to voice-grade digital channel of 64 Kbps
	www.auditmypc.com /acronym/DS0.asp (263 words)

	[No title]
		Demonstration Example: To simulate an analog signal, a sampling rate that is at least five times the highest frequency in the analog signal, should be used.
		Generate a signal that is a sum of two sinusoidal components, one with a frequency of 0.01 times the sampling frequency (and amplitude = 1) and the other with a frequency of 0.03 times the sampling frequency (and amplitude = 0.3).
		Compare the decimated output to both the original input signal and the output of the low pass filter.
	www.eng.usf.edu /~sankar/course/ex2_dsp1.htm (929 words)

	Digital Signal 0 - Encyclopedia, History, Geography and Biography
		Digital Signal 0 - Encyclopedia, History, Geography and Biography
		In T-carrier systems Digital signal 0 (DS0) is a basic digital signaling rate of 64 kbit/s, corresponding to the capacity of one voice-frequency-equivalent channel.
		The DS0 rate may support twenty 2.4 kbit/s channels, or ten 4.8 kbit/s channels, or five 9.67 kbit/s channels, or one 56 kbit/s channel, or one 64 kbit/s clear channel.
	www.arikah.net /encyclopedia/DS0 (175 words)

	Digital Data, Digital Signal
		Receiver needs to determine bit information from the signal level, for instance, by sampling the signal level at the middle if the time interval and comparing the value to a threshold.
		polarity of adjacent signal levels: 1 encoded by transition between levels and 0 encoded by a lack of transition.
		A multilevel binary encoding that complements the bipolar-AMI encoding: binary 1 is represented by a lack of pulse, and a binary 0 is represented by a positive or a negative pulse.
	www.cse.ohio-state.edu /~gurari/course/cis677/cis677Se12.html (625 words)

	HKS USA REV AD
		Many electronic air/fuel and timing controllers require a 0-5volt digital signal to operate properly.
		The HKS RevAd allows for one 0-5volt digital signal to control up to three separate electronic devices without any signal degradation.
		ALL ; 3 digital signal outputs from one digital input
	www.hksusa.com /products?id=769&rsku= (62 words)

	Glossary (Site not responding. Last check: 2007-10-10)
		Framing specification used in transmitting digital signals over a single channel at 64-kbps on a T1 facility.
		Framing specification used in transmitting digital signals at 1.544-Mbps on a T1 facility (in the United States) or at 2.108-Mbps on an E1 facility (in Europe).
		Digital Service Unit, a device used to connect a V.35 serial interface to a digital circuit.
	www.hifn.com /support/Glossary_D.html (417 words)

	Elsevier.com - Digital Signal Processing
		Digital Signal Processing illuminates and explores the path of creativity in the field of signal processing.
		The journal is a time-saving aid to electronic engineers and to researchers, scientists, and corporate managers who want to keep abreast of vital research and information that is typically scattered among a number of separate publications.
		Digital signal processing, a discipline that spans electrical engineering, computing, mathematics and the physical sciences, includes applications such as:
	www.elsevier.com /locate/issn/1051-2004 (233 words)

	Telecom and Network Speeds
		This is the basic digital voice signal - called Digital Signal 0 or the infamous DS0 for short.
		The North American signal hierarchy was created by the old US 'Bell system' (ATandT) in the early 1960's and was the world's first digital voice system.
		It is based on multiples of the DS0 signal with a little bit of overhead to show its age.
	www.zytrax.com /tech/data_rates.htm (1010 words)

	Digital Subscriber Line (DSL)
		Digital Subscriber Line (DSL) technology is a modem technology that uses existing twisted-pair telephone lines to transport high-bandwidth data, such as multimedia and video, to service subscribers.
		ADSL depends on advanced digital signal processing and creative algorithms to squeeze so much information through twisted-pair telephone lines.
		Balancing low signal levels to prevent emissions that interfere with amateur radio with higher signals needed to combat interference by amateur radio could be the dominant factor in determining line reach.
	www.cisco.com /univercd/cc/td/doc/cisintwk/ito_doc/adsl.htm (3937 words)

	Digital Signal Processing Problems (Site not responding. Last check: 2007-10-10)
		He multiplies the bandlimited signal by the depicted periodic pulse signal to perform sampling (figure 2).
		This signal serves as the input to a first-order RC lowpass filter.
		The receiver would bandpass the received signal, pass the result through an A/D converter, perform all the demodulation with digital signal processing systems, and end with a D/A converter to produce the analog message signal.
	cnx.rice.edu /content/m10351/latest (2656 words)

	An Introduction to Digital Signal Processors
		Perhaps one of the last bastions of old-fashioned embedded design is one of the newest, hottest fields: digital signal processors.
		Analog signals, such as those used in virtually all of the electronic devices we interact with daily, are voltages that vary with time.
		Signal processing algorithms accept analog signals and feed them through a function to convert them to something else.
	www.embedded.com /98/9805fe.htm (3279 words)

	Fundamentals of Digital Audio
		A continuous band-limited signal can be replaced by a discrete sequence of samples without loss of any information, and the original continuous signal can be reconstructed from the samples; furthermore, the sampling frequency must be at least twice the highest signal frequency.
		As signal level rises, quantization error becomes increasing smaller in proportion to the signal.
		It's important to apply dither when the resolution of a digital audio signal is reduced through conversion.
	www.mtsu.edu /~jakins/4200/4200fundamentals.html (747 words)

	Digital Signal Processing with General Purpose Microprocessors, DSP and Reconfigurable Logic (ResearchIndex)
		Digital Signal Processing with General Purpose Microprocessors, DSP and Reconfigurable Logic (1999)
		This paper compares selected digital signal processing algorithms on a variety of computing platforms in terms of achievable performance and cost.
		Digital Signal Processing: A Performance Comparison - Köhler, Sawitzki, Gratz..
	citeseer.ist.psu.edu /162802.html (290 words)

	adaptyv signal processing dsp
		That means that if such a filter is excited by an impulsion, the output signal always ends to zero after a limited time.
		It is possible by using an emulator relatively inexpensive, delivered with a free development software (and also downloadable via Internet) and the probes, and also due to free softwares on the web allowing you to transform your PC with its sound card into a low frequency generator, oscilloscope, spectrum analyser and frequency counter.
		The list hereafter is not exhaustive, and give an overview of signal processing functions and applications used in different main sectors.
	www.adaptyv.com (479 words)

	Digital Signal Processing (Site not responding. Last check: 2007-10-10)
		Digital signal processing is taught in the engineering curriculum, but not in the computer science or mathematics curricula.
		Therefore, the authors of some papers in computer vision assume substantial knowledge of digital signal processing, whereas some beginning students know next to nothing about the area.
		A particularly important topic in digital signal processing is the Fourier Transform, which represents a 1D signal or image as a weighted sum of sine waves.
	www.cs.hmc.edu /~fleck/computer-vision-handbook/dsp.html (376 words)

	Amazon.com: Books: Digital Signal Processing: Principles, Algorithms and Applications (3rd Edition) (Site not responding. Last check: 2007-10-10)
		I also have Lyons Understanding Digital Signal Processing which is great for people new to DSP but I felt it lacked some depth in certain areas and did not have sample problems.
		I have 6 years experience with digital signal processing, however, it has been so many years since i worked in this field that i purchased this book to update my skills.
		For example the section on "polyphase" filters is nonsense with regard to signal processing, it is actually a simple programming performance enhancement based on recognizing the attributes of the data.
	www.amazon.com /exec/obidos/tg/detail/-/0133737624?v=glance (1631 words)

	Introduction to Signal Processing
		The second is on digital audio effects, such as flanging, chorusing, reverberation, multitap delays, and dynamics processors, such as compressors and expanders.
		These two areas were chosen because of their appeal to undergraduates and because they provide concrete illustrations of the use of delays, circular buffers, and filtering concepts in the context of audio signal processing.
		We discuss the design and circular buffer implementation of notch and comb filters for removing periodic interference, enhancing periodic signals, signal averaging, and for separating the luminance and chrominance components in digital color TV systems.
	www.ece.rutgers.edu /~orfanidi/intro2sp (2053 words)

	Digital_signal_processing (Site not responding. Last check: 2007-10-10)
		The algorithms required for DSP are sometimes performed using specialized computers, digital signal processors (also abbreviated DSP).
		Sampling is usualy carried out in two stages, discretization and quantization.
		if an input signal is a weighted linear combination of different input signals, the output is an equally weighted linear combination of the corresponding output signals.
	www.freecaviar.com /search.php?title=Digital_signal_processing (1309 words)

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