An acoustic biometric imaging system for acquiring a fingerprint representation, comprising: a device member; a transmitter transducer having a first fundamental mode resonance frequency, coupled to the device member; drive circuitry; a receiver transducer having a second fundamental mode resonance frequency, coupled to the device member; receiver circuitry; and processing circuitry configured to: control the drive circuitry to provide an electrical excitation signal to the transmit transducer resulting in fundamental mode oscillation of the transmit transducer with a frequency spectrum having a peak frequency being higher than the first fundamental mode resonance frequency and the second fundamental mode resonance frequency; receive, from the receiver circuitry, an electrical sensing signal indicative of an acoustic reflection signal; and determine the fingerprint representation based on the sensing signal received from the receiver circuitry.