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Delta modulation (Document No: 19730010458)
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Schilling, D. L. |
| Copyright Year | 1972 |
| Description | The results are presented of a study dealing with the problems of source encoding using delta modulation. An algorithm is described which was employed in the design of an adaptive delta modulation. The algorithm is extremely inexpensive to implement and features extremely desirable characteristics such as a 40 db dynamic range and a 90 percent non-redundant word intelligibility at a bit rate of 9.6 kb/s. A new concept is presented in delta modulation design, the nth-order delta modulator. The nth order delta modulator increases the maximum SNR of a delta modulator but not its dynamic range. It is shown that a 2nd order delta modulator, which employs two delta modulators in cascade, results in a 15 db output SNR improvement over a linear delta modulator operating at 27 db. Two additional areas of research are discussed. The first area involves decomposition of voice and the second is concerned with the source encoding of video signals. |
| File Size | 761947 |
| Page Count | 29 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_19730010458 |
| Archival Resource Key | ark:/13960/t8rc1tc58 |
| Language | English |
| Publisher Date | 1972-12-31 |
| Access Restriction | Open |
| Subject Keyword | Voice Data Processing Algorithms Coding Signal To Noise Ratios Delta Modulation Video Data Modulators Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science |
| Content Type | Text |
| Resource Type | Technical Report |
