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." ...

Your child will investigate different sounds, such as high-pitch and low-pitch sounds. They will tap the glasses to make sounds. They will observe how changing the amount of water in a glass changes ...

Opera singers have to use the extreme limits of their voice range. Many pedagogical and scientific sources suggest that the highest pitches reached in classical singing can only be produced with a ...