n audio technology it contains three aspects of contents: the pitch of a voice, audio intensity and amplitude; tone of voice, namely the number of audio frequency or second change; the tone of the sound, namely audio harmonic or harmonic components.
The sound quality is good or bad, mainly is to measure the sound of the above three aspects to a certain level, that is, relative to the pitch of a frequency or channel with a certain strength, and in the frequency range, the same volume, the amplitude of each frequency point is uniform, balanced, full, frequency response curve is flat, the voice intonation is accurate, both loyal field presents the original appearance of audio frequency or components, frequency distortion and phase shift and meet the requirements. Overtone moderate voice, harmonic rich timbre, sounds beautiful.
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