The order of pitches from high to low is C, D, E, F, G, A, B. Generally, the pitch of boys is between E and F.

Pitch represents the frequency of sound and 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 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 with increasing loudness, and the pitch of high-frequency pure tones above 3000 Hz increases with increasing loudness. 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, establishing a pitch scale across the entire audible frequency range. 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. Pitch is also related to how long the sound lasts. For very short pure tones (on the order of milliseconds or shorter), you can only hear a "click" sound like a blow or a finger snap, but no pitch can be felt. The duration increases from 10 milliseconds to 50 milliseconds, and it sounds like the pitch changes continuously from low to high. Beyond 50 milliseconds, the tone becomes stable. The pitch of musical sounds (polyphonic sounds) is more complex and can generally be considered to be mainly determined by the frequency of the fundamental tone.

Reference: Tone - Baidu Encyclopedia