The Journal of the Acoustical Society of Korea
- Volume 15 Issue 3E
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- Pages.13-18
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- 1996
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- 1225-4428(pISSN)
Real-time Implementation of an Identifier for Nonstationary Time-varying Signals and Systems
- Kim, Jong-Weon (Department of Information and Communications, Juseong College) ;
- Kim, Sung-Hwan (Dept. of Electronics Engineering Seoul City Univ.)
- Published : 1996.09.01
Abstract
A real-time identifier for the nonstationary time-varying signals and systems was implemented using a low cost DSP (digital signal processing) chip. The identifier is comprised of I/O units, a central processing unit, a control unit and its supporting software. In order t estimate the system accurately and to reduce quantization error during arithmetic operation, the firmware was programmed with 64-bit extended precision arithmetic. The performance of the identifier was verified by comparing with the simulation results. The implemented real-time identifier has negligible quantization errors and its real-time processing capability crresponds to 0.6kHz for the nonstationary AR (autoregressive) model with n=4 and m=1.
Keywords