What are the tuning techniques for the mixer?
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October 20 14:01:38, 2024
A simple and complete sound system, from the beginning to the end, includes at least four units: microphone, mixer, amplifier, and speaker. Of course, the sound system actually used by the tuner is much more complicated than this. When multiple signals are input, in addition to the microphone, there will be a DVD player (or CD player), a recording deck, an MD deck, and the like. In addition, professional audio processing equipment such as reverberators, delays, exciters, compressors, expanders, equalizers, frequency dividers, etc., are also used. However, from the perspective of the entire workflow, the mixer is undoubtedly located in the key and hub position, playing the role of the link, so the tuning of the tuner plays an important role.
Features
Before using the mixer, we need to have a good understanding of the function of the mixer. The mixer is the most important equipment in the professional audio system. A professional audio system is often based on the mixer. The commonly used mixer can accept 8~24 different signals at the same time, and adjust the processing of these signals in tone and amplitude. In general, the console has four main functions.
The first function is to amplify the program signal. When the signals of different program sources enter the mixer, the amount of amplification required for different signals is not the same, so the mixer must be able to process different signals separately. For example, the musical signals and vocal signals of various instruments are different in amplitude, and of course, they need to be processed separately.
The second function is to adjust the frequency (ie, tuning) of each signal separately. We know that different signals form different timbres due to their spectral distribution, harmonic components, etc., and the influence of buildings on sound makes the timbre change a lot. The sound engineer should process the different sound signals entering the mixer separately according to different sound amplification environments, so that the sound is as close as possible to the original sound. Each channel of the mixer has the same processing means, such as: 3-band equalization, gain controller, high-pass filter, and so on.
The third function is the combination of signals. After the mixer adjusts the signals, it combines the various signals into a standard left and right channel (stereo) output, which is used as the input signal of the next level device. This is the most basic function.
The fourth function is to assign functions. In addition to the stereo main output, the mixer can provide more than two auxiliary output signals. This type of signal has two purposes: one is the audio room monitor X or the stage to listen; the other is to use the excitation signal of the effect.
Some people have simply summarized its functions as:
* Pick up the signal and zoom in
*Pitch equalization of high, medium and low sounds as needed
* Send the signal to the left and right busbars as needed or perform group control
* Artistic processing of signals sent to the auxiliary bus
* Output control as required.
However, no matter how it is expressed, its functions are consistent. All the work of the tuner should be based on the function of the mixer.