  We investigate the electron quantum path interference effects during high
harmonic generation in atomic gas medium driven by ultrashort chirped laser
pulses. To achieve that, we identify and vary the different experimentally
relevant control parameters of such a driving laser pulse influencing the high
harmonic spectra. Specifically, the impact of the pulse duration, peak
intensity and instantaneous frequency is studied in a self-consistent manner
based on Lewenstein formalism. Simulations involving macroscopic propagation
effects are also considered. The study aims to reveal the microscopic
background behind a variety of interference patterns capturing important
information both about the fundamental laser field and the generation process
itself. The results provide guidance towards experiments with chirp control as
a tool to unravel, explain and utilize the rich and complex interplay between
quantum path interferences including the tuning of the periodicity of the
intensity dependent oscillation of the harmonic signal, and the curvature of
spectrally resolved Maker fringes.
