GainProcessing.htmlTEXThbwr Lsgsg Jasmine Help Gain Processing

The simplest gain processing task, input level control, is accomplished by checking Compress but setting the Thresh control at 0db so that no input level engages compression action. Then use the Output level control to adjust recording level.

It is important to note that the gain processor is AFTER the analog to digital converter and, as result, the gain processor cannot solve the problem of an overdriven input.

Automatic level control of recorded sounds can be accomplished by choosing the Gain Processing item in the Record Menu. Technically, the Jasmine gain processor is a look-ahead compressor/limiter/expander that works at a syllabic rate (approximately the frequency of speech syllables). This is quite useful for limiting the dynamic range of microphones and other acoustical sources. The Gain Processing menu item in the Record Menu will be checked if any part of the gain processing is enabled (compress or expand on either the right or left channel).

Each of the controls, with the exception of Comp Level, are calibrated in dB below the 16 bit clip level. Click and drag the color bar of each control to adjust it.

The Speed control determines how many times a second the gain is fully adjusted to the sound input. The point at which gain reduction occurs when Compress is enabled is set with the Thresh control. Likewise when Expand is enabled, the Exp Thresh (expansion threshold) controls the level below which gain expansion occurs. The Comp Level control sets the compression ratio from soft to hard (limiting). The level recorded is set with the Output control. Click Stereo Link to couple the action of both left and right gain processors together. This will prevent center channel roving on stereo content.

Gain Processing settings are saved as a group. Use the Preset popup menu to select which group you would like to modify. You can also change the name of a group. Changes to a group are not finalized until you press the OK button.


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