LVH-900 FIRmaker filter export guide

Step One

• Run the FIRmaker optimization
  1. Set your desired calculation parameters.
  2. Do not change the Channel configuration on the left.
  3. Select "Advanced Settings" 
  4. Do not set a minimum frequency range lower that 63Hz. 
  5. Set your Result Label (File name) to the desired description. 
  6. Start the optimization and repeat as desired for each array. 

Step Two

• Once satisfied with the optimization results, Export the FIR files. 

• Setup the Parameters for Export.

1. The sample rate must be set to 48 kHz for use in ArmoníaPlus
2. We recommend using 2048-taps for optimal array performance. 
   • A 2048 tap FIR filter will add about 21ms of latency to the system.
   • For systems in which excess latency is detrimental to the functionality, the recommended tap size depends on the array configuration. Higher box count arrays benefit from a higher tap number. 
   • Biamp can shorten the 2048 tap latency to as little as 6ms thru propietary software. Email your FIR files to Venuepolar@Biamp.com to take advantage this option. 
3. DC Attenuation should be set to none.
4. Click "OK"

• Save Filters

The file name in the dialog is a prefix for the filter set. FIRmaker will add a number id to the suffix of the file name of each filter. It is important NOT to modify these id numbers.

1. Properly name the filter set so later you can identify which array these filters belong to.
2. Select “CSV Files, Single Column” as the file type.
3. Click "Save" 

(3) FIR filters are exported. The filter count is equal to the FIR channel count in FIRmaker.

Assuming that FIRmaker channel configuration is kept as default,

• For AS and AP cabinets, the filter id corresponds to cabinets 1, 2, 3… from top to bottom.

Further reading

• LVH-900 FIRmaker Filter Import Guide
• FIR Filters & DC offset