FIR Creator & FIR Creator EX

Create finite impulse response (FIR) filters and mixed FIR + IIR filtering solutions for loudspeakers.
Load filters into any FIR capable speaker processor or amplifier. Advanced Direct-to-Processor function available for some brands (EX only).
Build a complete loudspeaker preset (DSP signal chain) by generating Summary Output files in combination with FIR &/or IIR filter files (EX only).

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.
  • IIR filter modes with brand-specific parameter limits
    • FIR Creator: General (all of the above filter types)
    • FIR Creator EX: Generic, Biamp Tesira, BSS, Lake, Linea Research, Marani, Powersoft, QSC Q-Sys, Symetrix and Legacy (previously ‘General’)
  • 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
  • SMAART® Control for live measurement streaming and capture directly into FIR Creator EX.
  • Comprehensive range of measurement file formats (TXT – magnitude/phase/coherence, TXT – samples, TXT – Klippel, WAV, STO – SysTune Overlay, TRF – SMAART Trace, ETM – Easera measurement, SPK – Monkey Forest/FourAudio 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 (EX only)
  • Generate complete loudspeaker presets via the processor channel summary setting export option (EX only)
  • Direct-to-processor functionality (EX only):
    • To LAKE PLM & D series amplifiers and LM series processors. 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”.
    • Optionally side-load pre-existing FIR filters (with automatic sample-rate-conversion, if necessary) from other programs for transfer to LAKE &/or Powersoft. Rewindow longer FIR filters to the LAKE & Powersoft tap limits.
  • Moveable license: deactivate then reactivate on a new computer.
  • macOS and Windows versions. (Windows 10 & above. Or macOS 10.14 & above)
Compare FIR Designer, FIR Creator / EX features on our Filter Software Comparison Table.




Target File with Non-flat Phase

Direct Design Mode

SMAART is a registered trademark of Rational Acoustics LLC, Connecticut, USA.