To provide an ultrasonic diagnostic device capable of suppressing the strength of a driving signal in a frequency band that does not contribute to image formation in various frequency bands.SOLUTION: An ultrasonic diagnostic device 100 that transmits a driving signal to a vibrator 2a that performs transmission/reception of an ultrasonic wave includes: a transmission/reception beam former 117 (waveform generation unit) for generating a transmission waveform of an ultrasonic wave included in a predetermined frequency band； a pulser 114 (pulser signal generation unit) for generating a pulse signal as a driving signal for driving the vibrator 2a on the basis of the transmission waveform； a variable BPF 112 (variable filter unit) for removing a frequency band that does not contribute to the formation of an ultrasonic image formed by using a reflection echo of a transmission ultrasonic wave based on the transmission waveform； and a control unit 12 for controlling a passing band of the variable BPF 112 on the basis of the transmission waveform.SELECTED DRAWING: Figure 2【課題】様々な周波数帯域において、画像生成に寄与しない周波数帯域の駆動信号の強度を抑制することができる超音波診断装置を提供する。【解決手段】超音波の送受信を行う振動子２ａに対して駆動信号を送信する超音波診断装置１００であって、所定の周波数帯域に含まれる超音波の送信波形を生成する送受信ビームフォーマー１１７（波形生成部）と、送信波形に基づいて、振動子２ａを駆動させる駆動信号としてのパルス信号を生成するパルサー１１４（パルス信号生成部）と、送信波形に基づく送信超音波の反射エコーを用いて生成される超音波画像の生成に寄与しない周波数帯域を除去する可変ＢＰＦ１１２（可変フィルター部）と、送信波形に基づいて、可変ＢＰＦ１１２の通過帯域を制御する制御部１２と、を有する。【選択図】図２
