Treble, midrange, and bass are sound zones. They have no corresponding keys and are two different things.

Vocal area is part of the vocal range. Treble, midrange, and bass are collectively called sound zones. A register is a part of a vocal range. According to the different pitches, it can be divided into three parts: treble area, midrange area and bass area. The group of small characters, one group of small characters, and the group of two small characters constitute the mid-range area; the group of three small characters, the group of four small characters, and the group of five small characters constitute the high-pitched area; the group of large characters, one group of large characters, and the group of two large characters constitute the low-pitched area.

Tone is one of the three main subjective attributes of sound, namely volume (loudness), pitch, and timbre (also called timbre). Indicates the degree to which human hearing distinguishes the pitch of a sound. Pitch is mainly determined by the frequency of the sound, but also related to the intensity of the sound.

For a pure tone of a certain intensity, the pitch rises and falls with the rise and fall of the frequency; for a pure tone of a certain frequency, the pitch of a low-frequency pure tone decreases as the sound intensity increases, but the pitch of a high-frequency pure tone rises as the intensity increases.

Extended information:

Tone analysis

The pitch is also related to the structure of the sound emitter, because the structure of the sound emitter affects the frequency of the sound.

In general, the pitch of low-frequency pure tones below 2000 Hz decreases as loudness increases, and the pitch of high-frequency pure tones above 3000 Hz rises as loudness increases.

Pitch can be quantitatively judged. The unit of pitch is called mel (mel): the pitch of a pure tone with a frequency of 1000 Hz and a sound pressure level of 40 decibels is used as the standard, which is called 1000 mel. Other pure tones that sound twice as high in tone are called 2000 mel. The value twice as low is called 500 US;

And so on, the pitch scale within the entire audible frequency can be established. The relationship between the pure tone tone and frequency obtained in this way with a sound pressure level of 40 decibels is shown in the following table:

High pitch: light, short, thin

Low pitch: heavy, long, thick

Baidu Encyclopedia—Tone

Baidu Encyclopedia—Tone Zone