When we talk about sound is usually the concept of frequency around the corner. Frequency below the mean number of vibrations per second. Frequency is a physical term. What we ultimately perceive when we hear sound with a certain frequency, is expressed by the term "pitch". The wavelength determines the oscillation frequency: the higher the vibration frequency (ie the more waves per unit length and the shorter the wavelength), the higher the perceived pitch.
frequency = pitch = Hertz (Hz)
The tone of a sound is determined by the pitch or number of vibrations per second (frequency). The frequency is measured in Hertz (Hz).
Whether we sound a tone or sound like high or low is of course subjective. However, the following relationship is certain: as the frequency increases tone sounds higher. A high tone has more waves per second than a low tone. Thus, a high-sounding piccolo also a very high frequency with thousands of vibrations per second. The sound of a tuba sounds very low, however (subjective) and has a very low frequency (objective). A healthy ear will show that between about 20 and 20,000 Hz. That does not mean that sounds above 20,000 Hz can not be important in the perception of complex signals such as music. They also influence certain aspects of the soundstage. The sensitivity of our ears is higher for the midrange. With age comes the hearing back for treble, with many adults, the upper limit for sensing sound dropped to about 15,000 Hz.
Fig.: The red tone has a higher frequency as the blue.
Both tones are equally loud
Both tones are equally loud
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