Automatic level control software

Navigate Products. Resources Online Pricing Inquiry. Connect With Us. ISO Certification. All rights reserved. Remember me? Forgot password? Need an account? Your Personal Details. Company name:. Helena St. Street address The output of the audio interface is then sent to the amplifer in the sound system. It is also possible to use the iOS audio interface as an insert in the console. This would be inserted after all gain and limiting, and just before the output to the amplifier.

You may need to adjust your interface gain settings to prevent clipping on the input, and to provide the proper signal level on the output.. Connect a microphone to the left input or iAudioInterface2 XLR connector , and make sure you have calibrated the microphone so that you are getting good SPL readings. Once you have the hardware set up correctly, you can proceed to the software setup.

If you have iAudioInterface installed, you will see an input gain range control. In most cases, Mid Range is appropriate, but if you experience clipping on the line input, select High Range. If you are using another audio input device, set the right input level to match the level coming from your mixer or console. Select the desired attack time. This will be the exponential attack time applied to the sound level attenuation. Faster times will correct excessive sound levels faster, while longer times will be less noticable.

Select the desired release time. This sets the exponential release time for the sound level to return to 0 dB attenuation. In addition, there will be a delay of this time before the sound release starts. For example, if you set a 20 second release time, and a loud sound is detected that applies an attenuation of 10 dB, the attenation will stay at 10 dB for 20 seconds, and then slowly decrease to 0 dB with an exponential time constant of 20 seconds.

Thus, it will be about 60 seconds before the attenuation completely disapears. The level at which attenuation is applied is set differently, depending on which module you are using.

In this module, the level control attenuation depends on the difference between the current SPL and the red trigger level. For example, if you set the red trigger level to 85 dBA, Slow, and the traffic light shows 90 dBA, 5 dB of attenuation will be applied to the line level signal. This will then slowly decrease back to 0, depending on your attack and release times. If another overage is detected before the attenuation is removed, more attenuation will be applied.

The dual traffic light module works similarly to the traffic light, except in this case two conditions are monitored to detect excess SPL. For each traffic light, the current SPL is compared to red trigger level. If either exceeds the red level, attenuation is applied,.

Thus, you can use two entirely different criteria and trigger levels for controlling sound levels. This allows a very flexible setup, where different trigger levels and measurement criteria can be in effect at the same time, or the criteria can be based on time of day or day of the week.