Adaptive filters suitable for real-time spectral analysis
Abstract
Some new cascade structures for adaptive filters are presented. They are especially suitable for real-time applications. Since the new structures are intended to be realized using single chip DSP IC's or single chip custom VLSI circuits the requirements for memory and divisions are minimized. The new structures are based on state-variable biquads that in addition to having good SNR's and low sensitivities (for fixed-point implementations) can also have their resonant frequencies and Q-factors independently tuned. The special case of using the adaptive filters for tracking sinusoids corrupted by noise and for formant based speech compression are described in detail.
- Publication:
-
IEEE Journal of Solid-State Circuits
- Pub Date:
- February 1986
- DOI:
- Bibcode:
- 1986IJSSC..21..108M
- Keywords:
-
- Adaptive Filters;
- Digital Systems;
- Real Time Operation;
- Signal Processing;
- Spectrum Analysis;
- Very Large Scale Integration;
- Fir Filters;
- Network Synthesis;
- Signal To Noise Ratios;
- Speech Baseband Compression;
- Transfer Functions;
- Vocoders;
- Electronics and Electrical Engineering