Systems are described which automatically and continuously correct for dynamic errors of transducers during transient and steady‐state measurements. They enable high‐speed measurement to be made with improved accuracy even in regions beyond a transducer's natural frequency. Transient phenomena with rise time of a fraction of a microsecond can be measured directly with a minimum of amplitude and phase distortion. High‐speed electronic analog circuits form an integral part of the transducer system to obtain the wave forms of the unknown physical phenomena, and to enable quantitative determination to be made with simple static calibration procedure. Post‐measurement amplitude and phase corrections are made virtually unnecessary.