Community
 
Aggiungi lista preferiti Aggiungi lista nera Invia ad un amico
------------------
Crea
Profilo
Blog
Video
Sito
Foto
Amici
    
 
 

DIGITAL SAMPLING

About of DIGITAL SAMPLING









Digital sampling --  Britannica Student Encyclopedia

  • Already a member? | This Article'sTable of Contents Digital sampling Digital sampling Student Encyclopedia Article Page 1 of 1 the process of obtaining, at regular intervals, instantaneous values of an analog wave in order to convert it to digital form.
  • . Sampling also enables the engineer to remix or borrow discrete vocal and instrumental parts from other recorded work.
  • . Telephones that use digital sampling can transmit voices more quickly, accurately, and economically than telephones that do not use such technology.
  • . Page 1 of 1 To cite this page: " Digital sampling ." Britannica Student Encyclopedia .
  • . Digital sampling .
  • . Retrieved , , from Encyclopædia Britannica Premium Service: More from Britannica on "Digital sampling"...
  • . 860 Encyclopædia Britannica articles, from the full 32 volume encyclopedia > from the telecommunication article Analog-to-digital conversion begins with sampling, or measuring the amplitude of the analog waveform at equally spaced discrete instants of time.



    Digital Audio Resampling Home Page
  • | Digital Audio Resampling Home Page Abstract: This document describes digital audio and related concepts.



    Tektronix: Products > 8200 Series Sampling Oscilloscopes - CSA8200 Communications Signal Analyzer * TDS8200 Digital Sampling Oscilloscope: Introduction
  • . State-of-the-art Acquisition System The CSA8200 and TDS8200 Sampling Oscilloscopes are comprehensive acquisition and measurement instruments for research, design evaluation, and manufacturing test in the fields of datacom and telecom components, transceiver subassemblies, and transmission systems, computer and storage based high speed electrical serial data, semiconductor test, TDR-based impedance characterization, and other applications requiring bandwidths into tens of GHz.
  • . The CSA8200 and TDS8200 models share the same capabilities; either model, for example, may be configured with any combination of sampling modules.
  • . An adapter for the popular TekConnect® probing system brings the performance of Tektronix’ state-of-the-art high impedance differential and single ended probes to the 8200 Series Sampling Oscilloscope.
  • . Extremely Low Trigger Jitter, Flexible Signal Acquisition Solution The 82A04 Phase Reference Module extends the capability of the 8200 Series Sampling Platform by providing extremely low jitter/low drift sample position information to the mainframe.



    Tektronix: Products > Digital Sampling Oscilloscope - TDS8000B: Introduction
  • . The TDS8000B Digital Sampling Oscilloscope offers the widest range of on-board measurement and waveform-processing capabilities of any ultra-high bandwidth oscilloscope.
  • . In addition, the 8000 Series Sampling Oscilloscopes' timebases can be locked to a 10 MHz reference providing greater long-term stability.
  • . The TDS8000B boasts the highest sample rate among sampling oscilloscopes.
  • . Unmatched TDR Capabilities With the 80E04 TDR Sampling Module, the TDS8000B offers unmatched TDR performance on up to eight channels simultaneously.
  • . 8000 Series Sampling Oscilloscope Platform The TDS8000B is built on Tektronix' sampling oscilloscope platform that combines familiar MS Windows-based PC technologies with world-class waveform acquisition technology.
  • . 8000 Series Sampling Oscilloscope Optical Modules 80C01 Multi-rate Telecom Sampling Module - The module supports waveform conformance testing of long-wavelength (1100 to 1650 nm) signals at 622, 2488 Mb/s and 9.953 Gb/s as well as general-purpose testing with up to 20 GHz optical bandwidth.

    • info: DIGITAL SAMPLING


    Photo by www-camil.music.uiuc.edu:16080


    Digital Recording
  • . If the sampling rate is lowerthan the frequency we are trying to capture, entire cycles will be missed, andthe decoded result would be too low in frequency and might not resemble theproper waveform at all.
  • . If the sampling rate were exactly the frequency of the input, theresult would be a straight line, because the same spot on the waveform would bemeasured each time.
  • . This can happen even if the sampling rate is twice thefrequency of the input if the input is a sine or similar waveform.
  • . The samplingrate must be greater than twice the frequency measured for accurate results.(The mathematical statement of this is the Nyquist Theorem.) This implies thatif we are dealing with sound, we should sample at least 40, 000 times per second.
  • . 3 Effects of low sample rates The Nyquist rate (twice the frequency of interest) is the lowest allowablesampling rate.
  • . For best results, sampling rates twice or four times this shouldbe used.
  • . Figure 4 shows how the waveform improves as the sampling rate isincreased.


    Analog to Digital Conversion: Sampling
  • . Figure 4.2: Sampling a Continuous Signal There are two factors which determine the accuracy with which the digital sequence of values captures the original continuous signal: the maximum rate at which we sample, and the number of bits used in each sample.
  • . When the sample rate is much lower than the highest frequency in the continuosu signal, a band-pass filter which only allows frequencies in the range actually needed, is usally put before the sampling circuit.


    Digital Sampling
  • DIGITAL SAMPLING TECHNOLOGY by Don Anderson Phoenix Organs America Anyone who has ever listened to good music on a CD can appreciate the fact that sounds of such clarity and realism can be stored on a plastic disk.
  • . Several well-known electronic organ companies do not use real digital sampling.
  • . Never before has sampling technology been taken so far specifically for the church organ.
  • . Catherine's Cathedral, Canada during the sampling session.
  • . The sampling rate on a Phoenix Organ is the same as for CDs.
  • . In fact, many consider sampling to be an art once they have noticed the differing qualities of sound between organ manufacturers.


    Digital Sampling Watt Meter - What does DSWM stand for? Acronyms and abbreviations by the Free Online Dictionary.
  • . TheFreeDictionary Google Word / Article Starts with Ends with Text subscription: Acronyms DSWM(redirected from Digital Sampling Watt Meter ) 0.03 sec.

    • Benefits


    Photo by www.testequity.com


    Evaluation of digital libraries using snowball sampling
  • This article describes how snowball sampling was applied in two different cases to evaluate digital collections.
  • . The first phase of evaluation was conducted using snowball sampling and included in–person interviews.
  • . After completing both NRIS surveys, the question remained whether snowball sampling could successfully be applied through a survey sent out only through e–mail.
  • . The survey of NRIS users was based on a combination of non–random stratified and snowball sampling.
  • . Snowball sampling has usually been employed to access hard–to–reach populations.
  • . This sampling method solicited a richness and depth from respondents.
  • . The same process of snowball sampling was utilized through embedding the fifth question in the survey.
  • . More important, it was difficult to apply snowball sampling since many participants seemed reluctant to give out another’s e–mail address.
  • . The solicitation of names for potential participants, a key component of snowball sampling, proved to be more difficult with the e–mail survey.


    One-Day Workshop on Fast Digital Sampling in Nuclear Spectrometry
  • The UK's National Measurement Laboratory > Facilities Applications E-Store NPL Publications How can we improve the site for you? Email Address One-Day Workshop on Fast Digital Sampling in Nuclear Spectrometry | This workshop was held in the Historical Museum, Bushy House, on 28th April 2004.


    How the Ensoniq Mirage influenced the home digital sampling revolution.
  • The start of the home digital sampling revolution Without a doubt, if you own a Mirage you have a piece of history.
  • . Before the Mirage, digital sampling was only available to studios and wealthy musicians.
  • . The Ensoniq Mirage was revolutionary and gave the music world a peek into the digital sampling process.
  • . Because of the aforementioned sophistication of sound sampling, Geddy's keyboard rig was now very streamlined.


    Social Research Update 38: Tools for Digital Audio Recording
  • . Digital Audio Digital audio is recorded by sampling a sound wave and assigning each sample a value.
  • . The quality of the audio depends on the sampling frequency and the resolution, that is, the range of values that can be assigned to each sample.
  • . The sampling frequency is significant to the extent it needs to be at least double the highest frequency one wishes to record.
  • . Most of these devices save audio in highly compressed formats, with low sampling frequencies, and limited frequency sensitivity.

    • DIGITAL SAMPLING ?



    Howstuffworks "How Analog and Digital Recording Works"

  • . This is the sampling error .
  • . You reduce sampling error by increasing both the sampling rate and the precision.
  • . In the case of CD sound, fidelity is an important goal, so the sampling rate is 44, 100 samples per second and the number of gradations is 65, 536.


    Audio Ideas Guide Hi-Fi and Home Theater Equipment Reviews: dCS Sampling Rate Digital Converters
  • AIG Digital Equipment Reviews dCS Delius and Purcell Sampling Rate Converters Sugg.
  • . The Delius and Purcell do a few numbers together, too, specifically 192 kHz and 24 bits: the latter is a sampling rate converter (see our last issue's look at the Assemblage SRC and DAC and MSB 96K DAC)), which takes any digital signal and either up- or down-converts it, while also altering the bit rate up or down.
  • . For example, noise shaping can be set to 4 values, but that most likely to be used is Auto, which adjusts it to work best with each bit and sampling rate.
  • . Though both upsampling and downsampling are possible, the latter is pretty much a professional use for getting the highest resolution from 96/24 or 192/24 recordings onto CD, while the former is a way of accomplishing sheer digital magic.
  • . However, I should note that real sonic improvements are definitely provided by moving the anti-aliasing filter in a DAC well out of the audio band; since this filtering is at half the sampling rate, it occurs at 48 kHz in a 96-kHz DAC, and at 96 kHz in a 192-kHz DAC.


    OCP-based memory access arbitration for a digital sampling oscilloscope
  • Search for IP IP Based Solutions Design Centers Search for Tools Hot Corners In the SoC World Free Download About D&R | OCP-based memory access arbitration for a digital sampling oscilloscope By Traian Tulbure and Dan Nicula, eASIC Programmable Lgic Designline The current approach for designing an integrated circuit in the form of a System-on-Chip (SoC) is based on reusing the models for modules with a well-defined functionality.
  • . The study case is a digital sampling oscilloscope (DSO) implemented on a FlexASIC device from eASIC.
  • . The general capabilities of the chip include a two-channel digital sampling DSO and an arbitrary waveform generator (AWG) in a single USB-powered module.


    SOCcentral: OCP-Based Memory Access Arbitration for a Digital Sampling Oscilloscope (Programmable Logic DesignLine 17223)
  • . OCP-Based Memory Access Arbitration for a Digital Sampling Oscilloscope Publication: Programmable Logic DesignLine Contributor: eASIC Corp.
  • . The study case is a digital sampling oscilloscope (DSO) implemented on a FlexASIC device from eASIC.
  • . The general capabilities of the chip include a two-channel digital sampling DSO and an arbitrary waveform generator (AWG) in a single USB-powered module.


    A Brief Introduction to Sampling Audio | Tom's Hardware
  • » » » ARTICLE A Brief Introduction to Sampling Audio October 24, 2005 17:00 $569.99 $1, 449.00 $294.20 A Brief Introduction To Sampling Audio Welcome to the next installment of Tom's Hardware Guide's do-it-yourself digital audio tutorial.
  • . The purpose of this article is to tell you all you need to know about sound sampling.
  • . Wouldn't you like know how to unleash the potential of this powerful technique? Sampling refers to digital recording and playback: taking a sound and converting it into 1's and 0's.
  • . In practice, sampling is taking a snippet of sound from one source, editing it, and replaying it in a new context.


    QUT | ePrints Archive - Digital Sampling and Culture Jamming in a Remix World: What Does the Law Allow?
  • Digital Sampling and Culture Jamming in a Remix World: What Does the Law Allow? Fitzgerald, Brian and O'Brien, Damien (2005 ) Digital Sampling and Culture Jamming in a Remix World: What Does the Law Allow? .
  • . Abstract This article looks at the way in which intellectual property law in particular copyright and trademark law deals with the “free culture” practices of digital sampling and culture jamming.
  • . It considers the recent US case on digital sampling, Bridgeport Music Inc v Dimension Films Inc, and its relevance to Australian law, along with the critical issues of ‘substantial part’, moral rights and fair dealing.
  • . The article concludes by calling for greater clarity in the law in relation to the “free culture” practices of sampling and culture jamming in order to sponsor social and creative innovation.
  • . Item Type: Journal Article Status: Published Refereed: Yes Keywords: digital sampling; music sampling; culture jamming; remix culture; music law; mp3 blogs; music and copyright law Subjects: ID Code: 3687 Deposited By: Deposited On: 09 March 2006 Alternative Locations: Additional Information: Copyright 2005 University of Melbourne Law School.


    Atmel Corporation
  • Broadband Data Conversion > > Broadband Data Conversion Dual 8-bit 1 Gsps Analog Digital Converter Provides 1 Gsps sampling per channel or 2 Gsps sampling from one channel (interleaving mode) and integrates dual on-chip track/holds that provide excellent dynamic performance over 1.5 GHz input frequency bandwidth with low 1.4 W power consumption.
  • . the Dual Analog Digital Converter is dedicated to high speed, low power applications such as digital sampling oscilloscopes and direct RF down-conversion.
  • . Dual 8-bit 500 Msps Analog Digital Converter Provides 500 Msps sampling per channel or 1 Gsps sampling from one channel (interleaving mode) and integrates dual on-chip track/holds that provide excellent dynamic performance over 1.0 GHz input frequency bandwidth with low 0.7W power consumption per channel.
  • . The dual Analog Digital Converter is dedicated to high-speed, low-power applications such as digital sampling oscilloscopes and direct RF down-conversion.
  • . It is a high performance 12-bit, 500 Msps Analog Digital Converter featuring low power consumption and true 12-bit linearity for IF sampling applications.

    http://digilander.libero.it/a_digital/ @CallCenter