The transmitting interdigital transducer (IDT) and the receiving IDT for SAW element are designed to be the same IDTs of wavelet type, thus the reconstruction of wavelet transform can be implemented.

• 当声表面波器件的发射叉指换能器和接收叉指换能器被设计成完全一样的小波式叉指换能器时，可实现小波变换的重构。