Fir Filter Design Tool Online

FIR Designer

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.

Using FIR Designer 2's single-channel workflow, build a complete loudspeaker preset (DSP signal chain) by generating Summary Output files in combination with FIR &/or IIR filter files.

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

Match different makes & models of loudspeakers in install systems.

Perform system/room correction.

Features

• Intuitive, fast workflow from impulse response import through to filter coefficient 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: 12, 24, 44.1, 48, 88.2, 96, 176.4 and 192 kHz
• IIR filters (unlimited)
  • Bandpass, low and high shelf
  • Low-pass and high-pass Bessel, Butterworth, 2nd order variable Q, 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
  • General (all of the above filter types)
  • Linea Research
  • Powersoft
  • QSC Q-Sys
  • Symetrix
• IIR reference mode and reference editor with IIR filter conversion between brands
• FIR filter design
  • Magnitude Adjustment using common filter prototypes, above, and with minimum, linear and maximum phase options.
    • Keele/Horbach crossovers
    • Linear-phase brick-wall crossovers
    • Linear-phase complementary crossovers using common IIR low-pass and high-pass filter responses
  • Phase Adjustment using minimum-phase and maximum-phase all-pass filters, and a unique 4th order all-pass parametric phase filter
  • Automatic magnitude correction with smoothing
  • Automatic phase correction with smoothing
  • EQ Voicing (post target) using common filter prototypes
  • Unlimited filter prototypes and automatic correction frequency bands
• Target responses:
  • User-defined parametric magnitude target with low frequency shelf and unlimited slope segments,
  • Impulse response target from file (with options to use magnitude only or magnitude and phase), or
  • Both user-defined and file responses combined.

• Use coherence in automatic magnitude and phase correction algorithms
• Load and view loudspeaker impedance
• Import measurement resampling (measure at one sample rate and export filters at any sample rate.)
• Second View: an additional window for any workflow plot, which can be viewed on the primary display or on a different monitor/display.
• Continuous Wavelet Transform display for time/frequency impulse response analysis.
• SMAART® Control for live measurement streaming and capture directly into FIR Designer.
• Comprehensive range of measurement file formats (TXT – magnitude/phase/coherence, TXT – Klippel, TXT – samples, WAV, STO – SysTune Overlay, TRF – SMAART Trace, ETM – Easera measurement, SPK – Monkey Forest and more)
• Multiple export formats compatible with most processors and amplifiers (including Powersoft, BSS, miniDSP, EV/Dynacord, Linea Research, DFM and more)
• Processor gain, polarity & delay settings
• Generate complete loudspeaker presets via the processor channel summary setting export option
• Supplementary Responses window for seeing the effect of processing on other measurements
• Direct-to-processor (DTP) functionality:
  • 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.
• Integrated Measurement Averaging
  • Load up to 200 measurements of any type
  • Multiple level matching options
  • Auto time alignment with manual adjustment
  • Four averaging modes: Complex, Power (flat phase), Power (minimum phase) and Power (minimum phase + reference excess phase)
  • Export averaged response in a variety of formats.
• Moveable license: deactivate and reactivate on a new computer.

  

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Examples

Measurement Averaging (up to 200 files)

Continuous Wavelet Transform Display

Target File with Non-flat Phase

Direct Design Mode

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

Fir Filter Design Tool Online

Source: https://eclipseaudio.com/fir-designer/

Posted by: smiththeyet.blogspot.com

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