均衡器在专业音频系统中的作用
2021-11-12
All professionals in the stage lighting and sound industry often use specialized sound systems such as mixers, equalizers, and effectors as supporting facilities and derivative products. Equalizers are electronic products that can adjust various frequency electronic signals to compensate for the shortcomings of speakers and sound fields based on the adjustment of various different frequency electronic signals. Compensation and decoration of various sound sources are insufficient or excessive. Generally, the equalizers on the mixing table can only adjust the high-frequency, high-frequency, and high-frequency electronic signals separately.
Equalizers are divided into three categories: legend equalizers, parameter equalizers, and room equalizers.
1，图例均衡器: 也称为数据图表均衡器，基于控制面板上的穿梭键的散布，可以可视化调整后的平衡补偿曲线。每个频率的增加和衰减系数一目了然。它采用稳定的q值技术，并为每个频段设置一个穿梭电阻。无论某个频率的增加或衰减系数如何，滤波器的频带宽度都不会改变。通用技术专业传奇均衡器将20hz〜20khz数据信号分为10、15、27和31段进行调整。这样，每个人根据不同的规则选择具有不同段数的频率均衡器。一般来说，10波段均衡器的频点以八度音阶间隔分布，这在一般设置中是常用的。15频段均衡器是技术专业扩声中使用的2/3倍频程均衡器，而31频段均衡器是1/3倍频程均衡器。图示的均衡器结构简单，广泛应用于专业音响。
2. Parameter equalizer: also known as the main parameter equalizer, it is an equalizer that can finely adjust various main parameters for balance adjustment. It is often attached to the mixing console, but it is also a separate parameter equalizer. The main parameter content adjusted includes frequency band, frequency band, gain value, and quality factor Q value, etc. It can clean (including slander) and decorate the sound, making the sound system sound (or song) design style more unique and prominent, and achieving the necessary expression effect with a variety of options.
3. Room equalizer, used to adjust the phase frequency characteristic curve of the room's equalizer, because the digestion and absorption (or reflection surface) of building decoration materials to different frequencies are different, and the harm of their normal co vibration leads to the use of sound colorants. Therefore, it is necessary to use a room equalizer to objectively compensate and adjust for the frequency shortcomings of the building sound layer in multiple aspects.
The denser the frequency range, the sharper the adjusted peak, that is, the higher the Q value (quality factor), the more delicate the compensation during adjustment. The thicker the frequency range, the wider the adjusted peak. When the unit step response curve of the sound field transmission is very complex, it is difficult to compensate.
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