Rewindowing provides user-adjustable shortening of a FIR filter – from sources other than FIR Designer – so that it can be loaded into FIR-capable amplifiers & processors with specific tap length limits (and with a minimal change in filter response). Rewindowing is available within FIR Designer’s DTP (direct-to-processor) functions, which currently support Lake and Powersoft.
For example, a FIR filter with a tap length of 512 can be rewindowed to 384 so it can be loaded into a processor with a 384 tap-length limit.
Side-loaded FIR filters can be in almost any file format and are sample-rate converted to the output channel sample rate.
The rewindowed FIR filter can be sent – along with IIR, Gain, Polarity & Delay settings – via DTP to the target (Lake or Powersoft) device.
Rewindowing is only accessible to software licensees (since DTP isn’t visible in demo versions); this video shows how it works (using Lake as an example). Its based on FIR Designer but FIR Designer M & FIR Creator EX include identical functionality.
Existing FIR Designer 1 license-holders are eligible for a USD $100 coupon towards the first-year purchase of FIR Designer 2+ just contact us.