In the process of doing professional audio engineering construction for customers, there will always be various problems. For this reason, Xiaobian has specially summarized some common problems and introduced them to you. The following are specific contents:
1. Signal Distribution Problem In the case where several sets of speakers are installed in a professional audio engineering project, signals are generally distributed to multiple amplifiers and speakers through an equalizer. But it also causes a mix of amplifiers and speakers of various brand models, so that distributing signals may cause various problems, such as whether the impedance is consistent, whether the level distribution is average, whether the power of each group of speakers is up to standard, etc., and another equalization is used. It is difficult to adjust the frequency characteristics of the sound field and the speaker.
2, the debugging problem of the graphic equalizer common graphic equalizer will appear three kinds of spectrum wave shape of swallow type, mountain type, wave type, the above spectrum shape is the spectrum shape of the professional sound engineer artificial imagination, in fact, it is not sound The shape of the spectral wave actually needed at the engineering site is well known. The ideal spectral shape curve is relatively stable and gentle. If the spectral shape curve is artificially adjusted by imagination, it is conceivable that the final effect is often counterproductive.
3, the limiter adjustment problem In the professional audio engineering, the common limiter adjustment problem is that the pressure limiter does not work at all or the effect is excessive and adversely causes a reaction. The former problem can still be used after the problem occurs. The latter problem will seriously affect the operation of the sound engineering system. The specific performance is usually that the stronger the accompaniment sound, the weaker the human voice makes the performer feel at a loss.
4, system level adjustment problem First of all, the amplifier sensitivity control knob is not in place, then the sound system does not perform zero level adjustment. In some cases, the mixer channel pushes up slightly and the sound output increases a lot, which affects the normal operation and fidelity of the sound system.
5, bass signal processing The first type of problem is not to use electronic crossover directly to use the full-range signal to the amplifier to drive the speaker; the second type of problem is not knowing where to get the bass signal from the system for processing. If you do not use electronic crossover directly to use the full-range signal to power the speaker, although the speaker can release the sound will not damage the speaker unit, but the low-frequency sound of the low-frequency unit can be imagined alone; but if it is not from the system Acquiring the bass signal at the right place can also cause unnecessary trouble for the sound engineer's on-site operation.
6, the effect loop processing should take the post-fader signal, to avoid the effect of out of control caused by the microphone whistling the scene, return to the condition of the channel can occupy a channel, so it is easier to adjust.
7, line connection processing in the professional audio engineering common audio system AC interference sound is the line connection processing is not in place, there are balanced unbalanced and unbalanced transfer method in the system, must meet the normative standards when using . In addition, inferior connectors are forbidden in professional audio engineering.
8. The control problem console is the control center of the sound system. Sometimes the high, medium and low EQ balance on the console is equally enhanced or attenuated, indicating that the sound system is not set correctly. The system should be re-tuned to prohibit over-adjustment of the console. EQ.
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