Our hearing picks up a limited range of sounds, limits that were used successfully to keep teenagers from congregating outside British grocery stores by a device called the “teenage sound repeller." ...

Voice is one of the most distinct characteristics that differentiate individuals. It’s not just a medium of communication but also a reflection of one’s identity and sometimes, even health. When we ...

A Perth council is facing criticism from homeless advocates after installing a high-pitched noise device near rough sleepers.