我在国外的网站上查阅PX-400R资料时看到该琴具有HL音源和双成分波形(Dual-element Waveform),400R对HL和DW定义是这样的:
HL:(High-compressed Large-waveform) Sound Source Advanced compression techniques make it possible to record high volumes of waveform data and recreate the timbres of various instruments including the grand piano.