Frequently Description <80HZ80HZ or less mainly played in the music, such as a large drum, a tuning drum, and a small number of piano, cello, large, etc., this part is good, no The impact of music appreciation is not very big. This part is not easy to put it, it is not easy, and the requirements for the equipment are also higher. Many advanced equipment, in order to express the music of 80 (or 80 or more) HZ or more, it is preferred to simply cut the frequency of 80 (or 80) Hz or less, so as not to play back, but in turn affect the effect of the main frequency band. Extreme low frequency 20Hz is a human ear, the lower limit of your equipment can be tested, 25 Hz, 31.5Hz, Hz, 40Hz, 50Hz and 63Hz, 50Hz, 50Hz and 63Hz are the restraining limit of many speakers. If your speaker is in these frequencies If the sound declines, this frequency is your speaker low frequency weight limit. The sound of 80-160 Hz in the 80-160Hz band mainly shows the thick feelings of music, and the sound is good in this part of the playback effect, and it will feel the musical thickness, and there is a bottom gas. This part is well expressed, and when it is lack of 80 Hz or less, it will not even feel bass. If the performance is not good, the concert has a sense of dullness, even if it is weak. It is the upper limit of the playback of many subwoofer speakers, and this can judge your subwoofer spendle frequency limit. The sound of 300-500Hz in the 300-500 Hz band is mainly expressive (singing, reading), which can express the thickness and strength of the vocals on this frequency band, so that people are powered, clear, otherwise single, turbid. 800Hz800Hz This general equipment is easily broadcast, but should pay attention to too much. If too much, feel the frequency response of the sound, the high-stroke lack of level, low frequency is not enough. 1000Hz1 kHz is the standard reference frequency of the audio equipment test, and the parameters given in the audio equipment are tested at 1 kHz. 1200Hz1.2kHz can be appropriate, but it is not suitable for more than 3DB, which can improve the brightness of the sound, but too much will be hard. 2000-4000Hz2 ~ 4kHz has a great influence on the brightness of the sound, which 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. 8000-12000Hz8 ~ 12kHz is the top of music, the high frequency performance of the sound is 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. 14000Hz14kHz or more to music, if lack, the sound will lack infectivity and noble sense, such as the violin will not "loose flavor". This part should not be too much, substantially flat or slightly attenuated (no more than -3dB). 20000Hz20 kHz is the upper limit of human ear, and you can test your equipment high frequency replay upper limit. 16 kHz-20 kHz may disappear in some equipment, it is possible that your equipment cannot replay this period, if you are older, it is also possible to be your hearing attenuation. Sine wave sweep signal 20HZ-20KHz sine wave sweep signal is automatically smoothed from 20 Hz to 20 kHz frequency, and the performance information can be quickly determined by playing this segment test information.
