Level processing is the processing of amplifying or attenuating the signal level. What are the functions in the processor, and which are the level processing categories? The functions that can make the level bigger and smaller are all!For example: gain and compression in the input channel, pressure limit in the output channel, these functions can be used to adjust the size of the input level or output level, this is level processing.
Why do these level processing?
If the output signal of the upper-level equipment is too large or too small, the processor must attenuate or amplify the signal again to ensure that the processor can obtain a suitable signal. In the same way, in order to ensure that the next-level equipment of the processor can obtain a signal of a suitable size, we also need to adjust the output level of the processor.
Phase and delay processing
There is no need to say more about this, because sometimes the distance between the speakers and the audience is different. (Main amplifier and supplementary sound box) In order to make the sound of the two speakers reach the listener's ears at the same time, the delay function is needed at this time.
It is a device for raising and attenuating different frequencies and adjusting the ratio of bass, midrange, and treble.
Sometimes it can be used to cut off the frequency of howling to prevent damage to speakers and amplifiers.
Signal routing processing
It is obvious that this processor has 4 input interfaces and 8 output interfaces, commonly known as 4 in and 8 out. This signal routing function can freely control the distribution of signals.For example: we only provide the signal of input A to output 1 and output 2, and the other output channels do not have the signal of input A.
The circuit or device that achieves frequency division is called a frequency divider. Its basic function is to divide the full-frequency audio signal into different frequency bands according to the requirements of the speaker, so that the speaker unit can get a suitable signal.For example: there is a subwoofer in the audio system, and the frequency response range of the subwoofer is 45HZ to 200HZ. At this time, a splitter is needed to process the signal.
How to deal with it specifically?
Filter a part of the audio signal input to the subwoofer, and only keep the frequency around 45HZ to 200HZ.
It can suppress howling to a certain extent, which is the same as the howling suppressor on the KTV front-end effector.