In accordance with some embodiments, an apparatus for privacy protection is provided. The apparatus includes an audio output device arranged to output sound directed to an audio input device of a second device. The apparatus further includes an audio coupling interface arranged to provide a cavity for the audio output device and the audio input device of the second device. The apparatus also includes a spectral shaper, coupled to the audio output device, operable to apply a spectral envelope to an audio signal in order to produce a shaped audio signal, wherein the shaped audio signal is selectively coupled to the audio output device.