Title :
Instrument for the measurement of the instantaneous frequency
Author :
Carlosena, Alfonso ; Macua, Carlos ; Zivanovic, Miroslav
Author_Institution :
Dept. of Electr. & Electron. Eng., Univerisdad Publica de Navarra, Pamplona, Spain
fDate :
8/1/2000 12:00:00 AM
Abstract :
This paper describes the design and implementation of an instrument for the measurement of the instantaneous frequency of a signal. It is based on the extensive use of signal processing techniques and their implementation on efficient processors (digital signal processors). The concept of instantaneous frequency is first reviewed and some procedures for its estimation are evaluated with an off-line virtual instrument. The most promising techniques were then implemented on a PC-based instrument, achieving a real-time operation for audio ranges
Keywords :
Wigner distribution; digital instrumentation; digital signal processing chips; fast Fourier transforms; frequency measurement; spectral analysis; time-frequency analysis; virtual instrumentation; FFT; PC-based instrument; Wigner distribution; audio range; digital instrument; digital signal processors; floating point DSP; instantaneous frequency measurement; off-line virtual instrument; real-time operation; short-time frequency transform; spectrum analysis; time-frequency distribution; Counting circuits; Digital signal processing; Frequency estimation; Frequency measurement; Instruments; Signal design; Signal processing; Signal processing algorithms; Spectral analysis; Time measurement;
Journal_Title :
Instrumentation and Measurement, IEEE Transactions on
