An ultrasound signal processing device performs a transmission event, receives reflected ultrasonic waves, generates a received signal sequence, and synthesizes sub-frame acoustic line signals to obtain an acoustic line signal. The device includes: a transmitter that selects a transmitting/receiving oscillator array and directs the transmitting/receiving oscillator array to transmit an ultrasound beam to a target region； a receiver that generates a received signal sequence； a phasing adder that generates a line-region acoustic line signal； an acoustic line signal developer that allocates the line-region acoustic line signal as the acoustic line signal to generate the sub-frame acoustic line signal； and a weighting synthesizer that weights sub-frame acoustic line signals and synthesizes the sub-frame acoustic line signals into a frame acoustic line signal, where, in one of a first weighting profile and a second weighting profile, a first weight sequence has a larger turbulence than a second weight sequence.
