The compression method to use?

As China in recent years, increasing people's living standards, culture and entertainment facilities in the continuous development of the head from moving music with its melodies, dreamy style, attracting a large number of young people. .Discos have mushroomed in the vast land! As discos large dynamic, large loudness of playback, so in order to protect the amplifier and speakers are generally limited in its control to reduce the pressure in front of music dynamics, limiting their output .level, which can effectively protect the safety of electro-acoustic equipment. .However, if the debug properly, pressure limit does not work, power amplifier and speakers still too large due to the impact of transient signals and damaged, or because of excessive compression reduces the dynamic range of music should be so weak voice dry! Now .far as discos compressor issues in the use of all of the readers to use it! 1. compression ratio (Ratio) of the set discos set if the compression ratio is too small, there is no trace of compression; .If the compression ratio is set too large, it will cause a narrow dynamic range of music, sound, dry and tasteless. .PA in the disco hall used as a compressor, generally around the compression ratio set at 3:1, when used as a limiter, set at 8:1 compression ratio should be about. To ensure the expansion of compressed music signal .sound system's dynamic range, to avoid overload distortion, to ensure that the disco dance music, shocking. .2. Threshold (Threshoid) adjustment of the threshold adjustment is essential, which determines the pressure limit to what power usually comes into play. The correct adjustment methods are: the threshold adjustment to the minimum position, the tuning .station at maximum volume (volume increase must be confirmed after the compression ratio greater than 2:1, then, appeared to start the input signal compression, will not cause the phenomenon of the output signal is too strong), then slowly raise the threshold .value. At this time a large volume of slowly changing, when a large volume to a certain extent (has reached the required sound pressure level or the maximum rated power amplifier and speakers), set the threshold to stop upgrading! 3. start time ( .Attack) to adjust the start time of the adjustment is mainly to consider the characteristics of music. .If the start-up time too fast, shaking his head to a certain extent affect the dynamic head of music and intensity of sound; if the start time is too slow, would affect the extent and nature of music moment characteristics. .Therefore, the start time should be selected in about 40ms. .4. Recovery time (Release) to adjust the general recovery time should be slower than the compression time to ensure that music does not produce a sense of students jumping, if the recovery time is too long will affect the selection of the next normal music signal. .General discos in the normal play circumstances, the recovery time is about 500ms should be selected. .The rhythm of the music shaking his head at different speeds, so the rhythm in the opening shot of about 140 per minute can be a little longer, making the rhythm of about 155 per minute may be shorter than some of the specific characteristics of the music can set to make reasonable adjustments. .Comprehensive statement to sum up the above, the compression ratio settings: Protection 6-10, the effect is 2-4; start level is set: Do not let the red amplifier, generally between -10 to +6; start time setting: for bass in the .3, for tenor in 12 points for the treble at 9 o'clock, 12-point general-purpose recovery time settings: for bass 9:00, for 12 points Alto, for treble 3:00, general-purpose 12-point output output settings..