What is the compression limiter?.

Compression limiter is a compressor and limiter collectively. .It is a kind of audio signal processing equipment, you can compress the audio signal or the dynamic limit. .Compressor for the variable gain amplifier, the amplification factor (gain) with the input signal power can automatically change is inversely proportional. .When the input signal reaches a certain level (also known as the critical threshold value), the output signal with the input signal increases, a condition called compression (Compressor); not increase the known limits (Limiter). .The pressure limiter in the past with hard knee (Hard-knee) technology, the input signal reaches a threshold. .Immediately reducing the gain, so that the signal will appear in the inflection point (the turning point gain) at the phenomenon of dynamic mutation, makes the ear can feel suddenly strong signal is compressed phenomenon. .To address this shortcoming, the modern use of the new pressure limit soft knee (soft-knee) technology, this pressure limit the threshold changes before and after the compression ratio is balanced, gradual and imperceptible changes in the compression, the sound quality further .increased. .Pressure limit in the recording process can make the volume of instruments and singers to maintain a certain balance; ensure a balanced variety of signal strength. .Sometimes used to eliminate the articulate sound of the singer, or the use of compression and release time to change, resulting in the sound from small to large "reverse sound" special effects. .In the broadcasting system is to use it to compress the dynamic range of a larger program to prevent the modulation signal in the transmitter to prevent overload distortion and under the premise of raising the average emission level. .In the dance hall's PA system, the pressure limit is to maintain the original signal by compression in the style of the program, the lower the dynamic music, art and sound reinforcement system to meet the requirements for the activities. .Although the pressure limit a variety of purposes, modern compressor with a soft knee general and other new technologies, can further reduce the pressure limit of the compressor side, but that does not mean pressure limit destructive effect on the sound quality had not .complex exists. .Therefore, in the sound reinforcement system, do not abuse the pressure limit, even if the use should also be used with caution to reduce the signal with the pressure limit for processing. .This is not only to protect the power amplifier, speaker needs, but also the need to improve the sound quality..