1. An apparatus, comprising: a microphone configured to detect a voice of a human; a processor operably coupled to the microphone, the processor configured to define a masking language including a plurality of phonemes resembling human speech, at least one phoneme from the plurality of phonemes having at least one of a pitch, a volume, a theme, or a phonetic content substantially matching a pitch, a volume, a theme, or a phonetic content of the voice; a speaker configured to output the masking language; and a soundboard coupled to and disposed between the microphone and the speaker, the soundboard is constructed of a sound absorbing material such that a portion of acoustic energy of the masking language is absorbed by the soundboard before reaching the microphone when the speaker outputs the masking language.