DSP-599zx Audio Noise Reduction Filter
March 6, 1997
1-1
1
Introduction
This section includes a short summary of both the front panel controls and
the rear panel connectors. It also provides an overview of the features found
in the DSP-599zx. Please see Appendix A–Specifications for detailed infor-
mation on the capabilities of the DSP-599zx.
Please turn to Section 2–Installation for detailed installation and Setup of
your new unit. If you are in a hurry to start using the DSP-599zx, turn to sec-
tion two after you have read the first four pages of this section. Return to this
section to review all the features and capabilities.
Digital Signal Processing
Digital Signal Processing (DSP) is a powerful and complex method of ana-
lyzing and modifying analog signals. Audio signals like speech or radio data
are analog signals. The speech and data signals have fairly well known and
predictable characteristics; however, these characteristics are quite complex.
By converting the analog signal to a digital signal, a powerful digital signal
processor with a special program can analyze the characteristics of the ana-
log signal. The digital signal processor can then modify the digital signal to
enhance desired characteristics and to remove undesirable characteristics
such as noise. The processed signal is converted back to an analog signal and
sent on to a speaker, headphone, or data controller. The result is a signal with
less noise and/or fewer data errors. In amateur radio terms, DSP is capable
of reducing or eliminating QRN (noise) and QRM (interference).
For a more detailed discussion of digital signal processing, consult the most
recent ARRL Handbook.
DSP-599zx Overview
The DSP-599zx is an extraordinarily versatile digital signal processor de-
signed for amateur and shortwave radio voice, data, and CW operation. The
DSP-599zx uses advanced digital signal processing technology to imple-
ment algorithms that perform five basic audio functions:
•
Random noise reduction
•
Adaptive multi-tone and manual notch filtering (Tone noise reduction)
•
Bandpass/Highpass/Lowpass filtering
•
Signal generation including RTTY modulation
•
Signal detection and measurement including RTTY demodulation
The DSP-599zx combines these five basic functions to reduce noise and in-
terference and improve radio communication. The DSP-599zx hardware and
software architecture allow easy field upgrade with new features and algo-
rithms. The same hardware and software architecture also allow ergonomic
March 6, 1997
Summary of Contents for DSP-599zx
Page 1: ...DSP 599zx Audio Noise Reduction Filter Operating Manual March 6 1997 TECHNOLOGY INC ...
Page 56: ...4 Voice Mode 4 8 March 6 1997 ...
Page 62: ...5 CW Mode 5 6 March 6 1997 ...
Page 92: ...8 Troubleshooting 8 4 March 6 1997 ...
Page 96: ...Appendix B Glossary A 4 March 6 1997 ...
Page 98: ...Appendix C Product Warranty A 6 March 6 1997 ...
Page 100: ...Appendix D Electromagnetic Interference A 8 March 6 1997 ...
Page 102: ...Appendix E Schematic Diagrams A 10 March 6 1997 ...
Page 103: ...DSP 599zx Audio Noise Reduction Filter March 6 1997 A 11 ...
Page 104: ...Appendix E Schematic Diagrams A 12 March 6 1997 ...
Page 105: ...DSP 599zx Audio Noise Reduction Filter March 6 1997 A 13 ...
Page 106: ...Appendix E Schematic Diagrams A 14 March 6 1997 ...
