如何利用均衡器改善音质（How to use equalizer to improve sound quality）.doc

如何利用均衡器改善音质（How to use equalizer to improve sound quality） With the constant progress of the society, people require to sound more and more is also high, to achieve certain requirements on the effect of art and technology, pre-processing and processing needs of different sound signals for recording or broadcast, then record or playback. These processing and processing devices are called audio signal processors. One of the most widely used signal processing devices is frequency equalizer. 1, the classification of the equalizer, a few words of characteristics The amplifier frequency response equalizer is adjusted by filtering, the signal amplitude, phase, frequency compensation or attenuation, reduces the signal distortion; the loudness of certain frequency is greater than or less than other frequencies, and the other some signal level to be promoted or cut, the audio frequency range to achieve each one takes what he needs. The utility model can compensate the defects of the loudspeaker and the sound field by adjusting the electrical signals of various frequencies, and can compensate and modify various sound sources. Equalizers are divided into three categories: graphic equalizers, room equalizers, and parametric equalizers. 1.1 graphic equalizer The graphics equalizer uses a push-pull potentiometer for equalizing control adjustments, also known as a chart equalizer. Through the distribution of potentiometer on the panel, it can visually reflect the equalizing compensation curve, and the promotion and attenuation of each frequency are clear at a glance. The commonly used l octave, 2/3 octave and 1/3 octave graphic equalizer (1/3 octave is inserted into the two central frequencies between an octave frequency of the 4 octave frequency sequence difference of 1/3, 4 frequency ratio is 1:1.26:1.587:2), which belongs to the category of constant Q. When the Q value is constant, the frequency response of the amplifier is adjusted, and the bandwidth of the filter remains const