The Implementation of Discrete Time Sweep Sine Oscillator

This paper proposes a new design of digital sweep sine oscillator that change one frequency to other frequencies that can define time of sweep sine oscillator between started to stopped frequency and especially in defining step of sweep frequency. This digital sweep sine oscillator is implemented with the discrete time system with has impulse response as sin(omegan + Phi) and conjugate poles and a pair of zeros at the origin and the real axis in the unit circle on z-plane. The sweep frequencies of oscillator was changed the pole position, which 0 - pi on circumference and changed the zero position on the real axis for the phase shift of digital sine oscillator that corresponds with the changing frequency. The design and implementation of digital sweep sine oscillator used MATLAB program and TMS320C31 digital signal processor. The experiments results have been show that the proposed design of digital sweep sine oscillator produces correct the sweep frequencies