Sound characteristics refer to the qualities that define how we perceive sound. These include attributes such as pitch, which determines how high or low a sound is, and loudness, which indicates the intensity or volume of the sound. Other important characteristics are timbre, which describes the unique quality or color of a sound, and duration, which refers to how long a sound lasts. Additionally, sound can be characterized by its frequency and wavelength. Frequency, measured in hertz (Hz), indicates the number of sound wave cycles per second, while wavelength is the distance between successive peaks of a sound wave. Together, these characteristics help us identify and differentiate sounds in our environment, such as those produced by musical instruments like guitars or pianos.