phonetics n. 语音学(phon+etics学科)
phonograph n. 留声机(phono+graph写→写下声音→留声机)
euphony n. 好听的声音(eu好+phony声音)
euphonious a. 声音悦耳的(euphony+ous)
cacophony n. 刺耳的声音(caco刺耳,坏+phony)
symphony n. 交响乐(sym共同+phony→所有乐器一起响→交响乐)
microphone n. 麦克风(micro小+phone→小声音变大声音)