College】 【weak use of adjustable pressure limit.

<br> <BR> this article is to share with you about professional pressure limit on the use of adjustment. .Pressure limit the full name should be: compression limiter, which is the compressor and limiter collectively. .Pressure limit is processing the audio signal, a device that can compress the audio signal or the dynamic limiter. .In fact, we now use the pressure limit in the main function is to make it when the high signal compression, which can protect its lower-level audio equipment. .Can be said that a complete set of audio equipment, in addition to the mixer and equalizer, the pressure limit can be regarded as the most important peripheral device. .<BR> Article describes pressure limit, there are many, Compression and working principle of the detailed features I do not say, here we only focus on the comparative importance of some often confusing aspects or some user-friendly introduction to .I hope you can help! .<BR> Long time, the pressure limit in the professional audio equipment did not get enough attention, a little feeling of being marginalized, many of the sound engineer did not fully control the specific role of decompression limit, and some that knows some, but not know .how to adjust or, worse still that the pressure limit is a non-essential equipment! .<BR> <BR> One, on the pressure limit in the equilibrium before and after the problem <BR> <BR> on the pressure limit is placed before or after the equalizer, the audio industry has been in arguing, "the former ."After a pressure limit that compressed music sounds will be some changes, and then look through the modification effect of the equalizer is even more perfect;" the latter "made pressure limit is used to compress the strong protect the lower level signal device, if it is .equalizer on the front, that if the equalizer to adjust properly, resulting in high-level signal, that at this time before the pressure limit equilibrium it not lost its protective effect? .Therefore, pressure limit should be placed behind the equalizer! Looks reasonable, in fact, why we so rigid it? .If a stereo system, only one pressure limit, 2 or more equalizer, and that in this system pressure limit of course, on the front of the equalizer, after all, so you can protect more of lower equipment; If a stereo .the system pressure limit and a considerable number of equalizer, and that in this system will put pressure limit, of course behind the equalizer, after all, this can be done: "foolproof" Ah! .Therefore, flexibility is the key. .<BR> <BR> Second, the pressure limit of the specific adjustment method <BR> A, noise gate adjustment method <BR> 1, the threshold value (THRESHOLD): adjustment of the total volume of the mixer down, the system will not .a little man-made audio signal, turn the knob, the door indicating that the noise and then, after the red light can be larger, but can not be stressed too much, otherwise the music is also helpful to suppress. .As said above, locks it, should be appropriate to improve the point than the standard, even if some water can be intercepted. .<BR> 2, recovery time (RELEASE): noise gate and compressor recovery time in the recovery time is slightly different, longer appropriate, comprehensive, it should be more appropriate in about 500ms. .<BR> B, compressor and limiter adjustment method <BR> different pressure limit adjustment knob and the different parameters, but the following point 4 is the most pressure limit knob of the most basic standard features: <BR .> 1, the threshold value (THRESHOLD) <BR> adjusted threshold adjustment to adjust the compression ratio in conjunction with, the easiest way is to turn off the amplifier, before the pressure limit peripheral equipment transferred to the normal working state, then transferred .open the volume mixer to the normal show the location of the maximum volume, basically atthis time level mixer red signal light will be, and then adjust the pressure limit threshold (THRESHOLD) knob .adjusted to the pressure limit in the compression direction when the red light started flashing, that this time pressure limit has started to work, then the threshold value (THRESHOLD) to the basic tune better. .Note that the compression ratio must be open to greater than 1:1, otherwise the pressure limit is equal to direct, is the pressure limit has no effect. .<BR> 2, the compression ratio (RATIO) <BR> compression ratio settings set to have a certain range, the role is too small will not achieve pressure limit, too large, it will cause a narrow dynamic range of music, sound, dry and tasteless .. .Performance in general can be set at 3:1 compression ratio is about; in large dynamic audio signal of higher taxi system, generally set the compression ratio of about 5:1; as a limiter when used, should be .compression ratio is set to ∞: 1 (infinity). .<BR> 3, start time (ATTACK) adjustment <BR> start time we've talked about just a little faster would be better, otherwise it will affect the music features. .In summary, the start time should be more appropriate between 50ms-80ms. .<BR> 4, recovery time (RELEASE) recovery time of adjustment <BR> the contrary, the need to slow down, the whole, the recovery time should be more appropriate between 400ms-600ms. .<BR> That so many still feel that there may be some sound engineers have no idea, or guilty of confused, then we say that point of practical, simple. .At present, most of the pressure limit with the United States and the dbx 266 U.S. ALESIS (Alice) of the 3630 pressure limit, and I said the following about the two pressure limit adjustment method, simply give us a more fixed, .fool of the adjustment mode, although some such rigid, but I think there are certain rules to be found over the years I have summed up a general model, we can try, in order to facilitate direct, I will take the clock, for example, such as the 9 .the knob is similar to the 9 o'clock position of the clock; and 14 points is similar to the 14 o'clock position of the clock. .<BR>.