The inaudible range is far more likely to used as an attack vector for nefarious purposes. https://arxiv.org/pdf/1708.09537.pdf https://arxiv.org/pdf/1708.0953

The inaudible range is far more likely to used as an attack vector for nefarious purposes. https://arxiv.org/pdf/1708.09537.pdf https://arxiv.org/pdf/1708.09537.pdf https://arstechnica.com/information-technology/2017/05/theres-a-spike-in-android-apps-that-covertly-listen-for-inaudible-sounds-in-ads/ https://arstechnica.com/information-technology/2017/05/there...