- 杳无音信 yǎowúyīnxìn to have no news whatsoeverto be completely without any news or communication from someone; to vanish without a trace
- 渺无音信 miǎowúyīnxìn to receive no news whatsoeverTo have no news or word from someone for a long time; never to have been heard from since.
- 语音信号 yǔyīnxìnhào voice signalan electronic or digital signal representing human speech
- 语音信箱 yǔyīnxìnxiāng voicemaila telephone service or system using networks and computer processing to store, transmit, and retrieve voice messages