soundcipher

noun
UK /ˈsaʊndˌsaɪfə/
US /ˈsaʊndˌsaɪfər/

A soundcipher is a secret code made out of sounds.

The kids made a soundcipher with claps and whistles to send messages.


OTHER MEANINGS

2. A device or program that turns sounds into a coded signal.

The spy used a soundcipher to hide her voice message.

3. A pattern of musical notes that stands for a hidden word.

The composer wrote a soundcipher into the melody.

4. A way of scrambling audio so only certain people can understand it.

They protected the recording with a soundcipher before sharing it.