The function of the equalizer is to adjust the gain value of each band signal. Ordinary people initially contacted the equalizer on the advanced recorders of the 1980s. The high-end recorders of the year were equipped with N-band equalization adjustment, and the regulator was an equalizer. The equalizer is optimized for a certain type of music by modifying the composition of each frequency in the sound, and enhances people's feelings. Common include: normal, rock, pop, dance, classical, soft, jazz, metal, bass and custom. Customization is self-adjustment. There is no fixed mode. The true equalizer according to personal preference can satisfy different personal listening preferences.
In audio equipment, an equalizer is an electronic device that can separately adjust the amount of electrical signal amplification of various frequency components. By adjusting the electrical signals of various frequencies to compensate for the defects of the speaker and the sound field, compensating and modifying various sounds. Source and other special effects, the equalizer on the general mixer can only adjust the three-stage frequency electrical signals of high frequency, intermediate frequency and low frequency respectively.
Equalizer A component that corrects the amplitude and frequency characteristics and phase frequency characteristics of a transmission channel. A sine wave with a frequency f is sent to the transmission channel, and the characteristic that the amplitude ratio of the output voltage to the input voltage varies with f is called the amplitude frequency characteristic, which is referred to as the amplitude frequency characteristic; the phase difference between the output voltage and the input voltage varies with f. It is called the phase frequency characteristic and is called the phase frequency characteristic. The signals transmitted by various transmission channels are generally composed of components of different frequencies.
In the signal band, if the amplitude-frequency characteristic of 1 channel is a constant value; 2 the characteristic of phase φ varies with f is a straight line, which can be written as ¢(f)=2πft+θ, t is a constant; 3θ (called phase-cut) Equal to nπ, n=0, ±2, ±4, ..., the signal waveform is transmitted without distortion. Condition 1 causes different frequency components to have the same output input amplitude ratio after transmission, and conditions 2 and 3 have the same time delay. However, the actual channel often does not meet the above conditions, and thus the signal is distorted. If the distortion exceeds the allowable amount, the equalizer is used to correct the channel characteristics.
The requirements for equilibrium are related to the nature of the signal. Since the human ear is not sensitive to the phase, only the amplitude-frequency characteristics of the channel are required when transmitting the analog telephone signal. When transmitting a TV signal, the amplitude and phase frequency characteristics of the channel are required, otherwise the image is distorted. When the digital signal baseband is transmitted, the amplitude and phase frequency characteristics are required, because the waveform distortion causes inter-symbol interference and increases the bit error rate. When the digital signal carrier is transmitted, the phase cut in the phase-frequency characteristic of the channel is not required. This is because the phase reference is not required when receiving the digital FM signal, and the phase reference can be solved by the carrier recovery circuit when receiving the digital phase-modulated signal. Thus, only carrier frequency characteristics and delay frequency characteristics are required for carrier transmission.
3.2v12-30Ah Lithium Battery Cells
3.2v12-30Ah Lithium Battery Cells,3.2v12-30Ah Lithium Battery Cells price,3.2v12-30Ah Lithium Battery Cells product
Jiangsu Zhitai New Energy Technology Co.,Ltd , https://www.jszhitaienergy.com