FIR Creator / FIR Creator EX

FIR Creator & FIR Creator EX are applications for creating finite impulse response (FIR) filters for loudspeakers.
The filters can be loaded into many FIR capable speaker processors or amplifiers.
FIR Creator EX has Direct-to-processor functionality for LAKE & Powersoft amplifiers (most models).

Create loudspeaker tunings/presets with specific magnitude and phase characteristics.

Match different makes and models of loudspeakers in install systems.

Perform system/room correction.


  • Intuitive, fast workflow from impulse response import through to FIR filter export
  • Continuous filter calculation and error display as parameters are updated
  • Two workflows
    • FIR filter design from a loudspeaker measurement
    • Direct FIR design, without a measurement
  • FIR only or mixed IIR & FIR design
  • FIR Filter sample rates: 44.1, 48 and 96 kHz (plus 12 and 24 kHz for FIR Creator EX)
  • IIR filters (up to 8)
    • Bandpass, low and high shelf
    • Low-pass and high-pass Bessel, Butterworth, Chebyshev I & II, Elliptic, Linkwitz/Riley & Neville Thiele notched crossover.
    • IIR coefficient export: regular transfer function and MiniDSP formats.
  • FIR filter design:
    • Magnitude adjustment using (up to 8) common filter prototypes above, and with minimum, linear and maximum phase options
      • Keele/Horbach crossovers
      • Linear-phase brick-wall crossovers
    • Phase adjustment using minimum and maximum phase all-pass filters, including a unique 4th order all-pass parametric phase filter
    • Automatic magnitude correction with smoothing (1 band)
    • Automatic phase correction with smoothing (1 band)
  • Import measurement resampling (measure at one sample rate and creator filters for any sample rate)
  • Target responses:
    • User-defined parametric magnitude target with 2 slope segments,
    • Impulse response target from file (with options to use magnitude only or magnitude and phase), or
    • Both user-defined and file response combined
  • Comprehensive range of impulse response file formats (TXT – magnitude/phase/coherence, TXT – samples, WAV, STO – SysTune Overlay, TRF – SMAART Trace, ETM – Easera measurement, and more)
  • Export formats include text (inc. CSV), Binary & WAV (FIR Creator EX also adds Powersoft, Linea Research & EV/Dynacord). See processors and amplifiers for more details
  • Processor gain, polarity & delay settings (FIR Creator EX only)
  • Processor channel summary setting export (FIR Creator EX only)
  • Direct-to-processor functionality (FIR Creator EX only):
    • To LAKE PLM & D series amplifiers. Requires the FIR Designer LAKE plugin and the LAKE FIR 3-way module.
    • To Powersoft X, Ottocanali, Quattrocanali and DueCanali series amplifiers. Works via an XML file which can be loaded into the amplifier’s “Speaker EQ” or “Output EQ”.
    •  Can optionally side-load pre-existing FIR filters (with sample-rate-conversion, if necessary) from other programs for transfer to LAKE &/or Powersoft (subject to their FIR tap limits).
  • Moveable license: deactivate then reactivate on another computer.
Compare FIR Designer, FIR Creator / EX features on our Product Comparison Table.


FIR Creator


FIR Creator EX



Target File with Non-flat Phase

Direct Design Mode