Final answer:
Spectral shape cues relate to changes in wave forms and how sound waves reflect off objects, affecting timbre and direction. Physical properties of sound such as wavelength, frequency, and amplitude influence our auditory experiences, like pitch and loudness.
Step-by-step explanation:
Spectral shape cues are those changes in sound wave forms that relate to how those waves bounce off the environment. When sound waves collide with an object, they are reflected. This means that the particles oscillating in the wave collide with the object and are bounced back, leading to the wave's reflection. These interactions affect the perceived timbre and direction of the sound.
Like light waves, sound waves have physical properties such as amplitude, wavelength, and frequency which are associated with our perception of sound. The wavelength and frequency of sound waves are particularly important for auditory perception. High-frequency sound waves are perceived as high-pitched sounds, and low-frequency waves as low-pitched. Amplitude affects the loudness.