1. An apparatus, comprising: a microphone configured to detect a voice of a human; a speaker configured to output a masking language, the masking language including phonemes resembling human speech, the phonemes having at least one of a pitch, a volume, a theme, or a phonetic content substantially matching the pitch, the volume, the theme or the phonetic content of the voice; a soundboard located between the microphone and the speaker, the sound board configured to at least partially acoustically isolate the output of the speaker from the microphone.