Frequency section (HZ) listening affects representative instruments 16K-20K this frequency may not hear, so, can't hear this frequency does not mean that the equipment cannot be played back, and of course, it does not represent your listening is not enough. Ok, only a few people can hear 20khz. This frequency can affect the brightness of the high frequency, as well as the overall space sensation, this frequency is too small, which makes people feel a bit boring, too much will generate floating, easy to produce hearing fatigue. Electronic success, the flood of the instrument such as guzheng piano. The frequency of 12K-16K can affect the overall color, the so-called violin's "loosening" is determined by this frequency, this frequency is too bleak will cause the musical instrument to lose personality, and there will be a mesenchy, in the later treatment At the time, it is often to beautify this frequency, bell, bell, sand hammer, copper brush, triangle iron, etc., the high-frequency flood 8k-12k8 ~ 12khz, such as music, the high frequency of the music, the high frequency of the sound Performance feels most sensitive. Suitable outstanding (less than 5dB) has a great help of the hierarchy and color of the audio, and people will feel high. However, too many words increase background noise, for example: the noise of the system (sound card, and source) will be obviously expressed, and people will feel the sound of the sound. If this is lack, the sound will lack infectivity and vitality. The flute, double spring tube, trumpet, shortfire and other high-band tube instruments 4K-8K this frequency is most influencing, brightness, if this frequency ingredient is missing, the tone becomes flat; if this frequency component is too large, the sound color Being sharp and human can appear. This frequency is usually beautified by a press limit. Some female voice, as well as most of the play musical instruments. 2K-4K has a strong penetration. The resonant frequency of human ear cavity is 1 ∽4khz so people ear to this frequency is also very sensitive. If the empty deficiency is too small, the auditory ability will deteriorate, and the voice seems to be blurred. If this frequency component is too strong, the feeling of cough will occur. 2 ~ 4kHz on the brightness of the sound is very affected, this sound is generally not appropriate to attenuate. This level affects the hierarchy of music, and appropriate improvements can improve the brightness and clarity of the sound, but there is no more prominent in 4kHz, otherwise the teeth of the female voice will be too heavy. Some female voice, as well as most of the play musical instruments. 1.2k1.2kHz can be appropriate, but it is not suitable for more than 3DB, which can improve the brightness of the sound, however, excessive make the sound hard 1k1 kHz is the standard reference frequency of the audio equipment test, which is usually given in the audio equipment. It was tested at 1 kHz. This is the most sensitive frequency of the human ear. 800 This frequency amplitude affects the intensity of the tone. If this frequency is full, the tone will be strong; if this frequency is insufficient, the tone will look relaxation, that is, the composition characteristics of 800 Hz below have highlighted, and the low frequency components are obvious; if this frequency is too much, it will produce throat Sybe. If the larynge is too much, it will lose the personality of the voice, and the appropriate laryngon can increase the sexy, so the auditor calls this frequency as "hazard frequency" and should be used with caution. Vocals, some of the sounds of 300-500 in the 300-500 Hz band mainly express people (singing, reading), can express the thickness and strength of vocals on this frequency band, so that people are powered, clear, otherwise single thin ,turbid. Vocal 150-300 This frequency affects the intensity of sound, especially the sound of male sound. This frequency is the low frequency base audio frequency of male voice, and is also the root audio frequency of the tone. The sound in the 80-160Hz band mainly performs the thick feelings of music, and the sound is good in this part of the playback effect, it will feel the musical thickness, and there is a bottom gas.