You are correct that sound involves various physical quantities, and the frequency and wavelength can be associated with different aspects of sound. Let's clarify the definitions of frequency and wavelength in the context of sound:
Frequency of Sound: The frequency of sound refers to the number of oscillations or cycles of a sound wave per unit of time. It is typically measured in hertz (Hz). In the case of sound, the frequency represents the number of compressions and rarefactions of the medium (such as air) that occur per second as a sound wave propagates through it. The frequency of sound determines its pitch, with higher frequencies corresponding to higher pitches and vice versa. For example, a high-pitched sound, like a whistle, has a higher frequency than a low-pitched sound, like a bass drum.
Wavelength of Sound: The wavelength of sound represents the spatial distance between two consecutive points in a sound wave that are in the same phase. It is typically measured in meters (m) or other distance units. In the case of sound waves, the wavelength refers to the physical distance from one compression to the next (or from one rarefaction to the next). Alternatively, it can be considered as the distance between two consecutive points with the same acoustic pressure, particle displacement, or any other relevant quantity. The wavelength of sound is inversely related to its frequency. As frequency increases, the wavelength decreases, and vice versa. This relationship is described by the equation:
v = fλ
Where: v is the speed of sound in the medium, f is the frequency of sound, and λ (lambda) is the wavelength of sound.
It's important to note that the specific physical quantity associated with the wavelength may vary depending on the context or application. For example, in the case of acoustic pressure waves, the wavelength represents the distance between two consecutive points of maximum or minimum acoustic pressure. However, the wavelength can also be associated with other quantities like particle displacement, velocity, or intensity depending on the specific analysis or measurement being performed.
In summary, the frequency of sound refers to the number of cycles per unit of time, while the wavelength represents the distance between two consecutive points in a sound wave that are in the same phase. The specific physical quantity associated with the wavelength can vary depending on the context and application of sound analysis.