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| 005 | 20160812084556.0 | ||
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| 008 | 110401s2011 ne | s |||| 0|eng d | ||
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_a9789400713871 _9978-94-007-1387-1 |
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| 050 | 4 | _aTK7888.4 | |
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_a621.3815 _223 |
| 100 | 1 |
_aJanssen, Erwin. _eauthor. |
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| 245 | 1 | 0 |
_aLook-Ahead Based Sigma-Delta Modulation _h[recurso electrónico] / _cby Erwin Janssen, Arthur van Roermund. |
| 264 | 1 |
_aDordrecht : _bSpringer Netherlands, _c2011. |
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| 300 |
_aXII, 248 p. _bonline resource. |
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| 336 |
_atext _btxt _2rdacontent |
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| 337 |
_acomputer _bc _2rdamedia |
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| 338 |
_aonline resource _bcr _2rdacarrier |
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| 347 |
_atext file _bPDF _2rda |
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| 490 | 1 | _aAnalog Circuits and Signal Processing | |
| 505 | 0 | _a1. Introduction -- 2. Basics of sigma-delta modulation -- 3. Transient SDM performance -- 4. Noise-shaping quantizer model -- 5. Look-ahead sigma-delta modulation -- 6. Reducing the complexity of LA DD conversion -- 7. Trellis sigma-delta modulation -- 8. Efficient Trellis sigma-delta modulation -- 9. Pruned Tree sigma-delta modulation -- 10. Pruned Tree sigma-delta modulation for SA-CD -- 11. Comparison of look-ahead SDM techniques -- 12. Maximum SNR analysis -- 13. General Conclusions -- Appendix A: FFT calculations - coherent and power averaging -- Appendix B: Descriptions of the used Sigma-Delta Modulators. | |
| 520 | _aHigh resolution analog-to-digital conversion and digital-to-analog conversion is often realized with the use of a Sigma-Delta Modulator (SDM). The sigma-delta modulation process, although very non-linear when a 1-bit quantizer is used, is nowadays well understood and can be made to deliver a very high signal conversion quality. An example system that pushes the traditional sigma-delta modulation algorithm to its performance limit is the Super Audio CD (SA-CD) standard, in which a 64 times oversampled 1-bit signal is used to represent audio content with an SNR of up to 120~dB over 20~kHz bandwidth. Look-Ahead Based Sigma-Delta Modulation presents a number of alternative digital sigma-delta modulation techniques that make use of look-ahead, a process that takes into account the effect of decisions on the future, to realize an even higher conversion quality than possible with traditional sigma-delta modulation. This book provides the reader with a clear overview of various encoding techniques and demonstrates the improvements in signal conversion quality that can be obtained from their use. Starting from the basic full look-ahead approach that requires several orders of magnitude more computational power than a normal SDM, more efficient structures are derived that are able to realize a far higher signal conversion performance at a fraction of the computational cost. In addition to this, a modulator is derived that is able to generate bitstreams that are optimized for SA-CD usage, i.e. a high signal conversion quality combined with minimal signal entropy. All the look-ahead algorithms presented in this book are described in pseudocode and ample simulation results are provided to judge the effects on the signal conversion performance. | ||
| 650 | 0 | _aEngineering. | |
| 650 | 0 | _aComputer network architectures. | |
| 650 | 0 | _aSystems engineering. | |
| 650 | 1 | 4 | _aEngineering. |
| 650 | 2 | 4 | _aCircuits and Systems. |
| 650 | 2 | 4 | _aComputer Systems Organization and Communication Networks. |
| 700 | 1 |
_avan Roermund, Arthur. _eauthor. |
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| 710 | 2 | _aSpringerLink (Online service) | |
| 773 | 0 | _tSpringer eBooks | |
| 776 | 0 | 8 |
_iPrinted edition: _z9789400713864 |
| 830 | 0 | _aAnalog Circuits and Signal Processing | |
| 856 | 4 | 0 |
_zLibro electrónico _uhttp://148.231.10.114:2048/login?url=http://link.springer.com/book/10.1007/978-94-007-1387-1 |
| 596 | _a19 | ||
| 942 | _cLIBRO_ELEC | ||
| 999 |
_c206382 _d206382 |
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