FIR Designer M
Create finite impulse response (FIR) filters & mixed FIR + IIR filtering solutions for loudspeakers.
Build a complete loudspeaker preset with (up to) 6-way, simultaneous multi-channel filter design. Simulate the combined multi-way frequency response & time/frequency (wavelet) behaviour.
Advanced IIR filter functionality: Branded IIR modes, ‘Auto IIR’ automatic EQ, & Reference Editor for filter conversion between brands
Evaluate custom processing with the multi-channel ‘auditionDSP‘ media player & digital processor
Built-in loudspeaker measurement averaging
enhancement
Maximise the audio quality of an individual loudspeaker, device or entire system.
matching
Match different makes & models of loudspeakers in install systems.
tuning
Create tunings & presets with specific phase & magnitude characteristics.
correction
Perform system or room correction.
Work through the system & channel tabs to design custom DSP
Features
- Intuitive, fast workflow from impulse response import through to filter coefficient export
- Continuous filter calculation and error display as parameters are updated
- Multi-channel (up to 6-way) FIR filter design from multi-way loudspeaker driver measurements
- FIR only or mixed IIR & FIR design
- FIR Filter sample rates: 12, 24, 44.1, 48, 88.2, 96, 176.4 and 192 kHz
- Independent sample rates on input filtering and each output channel
- 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.
- Generic IIR filter mode includes all above filter types
- Branded IIR filter modes for Biamp Tesira, Blaze Audio, BSS, Lake, Linea Research, Marani, Powersoft, Pascal Audio, QSC Q-Sys, RAM Audio, RMS-Acoustics & Symetrix. (IIR conversion between brands is not available.
- Auto IIR function for matching a response to target with IIR filters only
- 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
- Channel linking for voicing across all outputs
- Unlimited filter prototypes and automatic correction frequency bands
- Magnitude Adjustment using common filter prototypes, above, and with minimum, linear and maximum phase options.
- Target responses:
- User-defined parametric magnitude target with low frequency shelf and unlimited slope segments
- Magnitude filter prototypes with minimum, linear and maximum phase options
- All-pass filters with minimum and maximum phase options
- Impulse response target from file (with options to use magnitude only or magnitude and phase)
- Both user-defined and file responses combined.
- auditionDSP: a built-in processor & audio player for listening to custom processing (filters &/or presets) during development
- 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.)
- Impulse response windowing options with adjustable start & end lengths
- Export any plot as an image (PNG) or any individual plot trace as a multi-column text (TXT) file
- Second View: an additional window for any workflow plot, which can be viewed on the primary display or on a different monitor/display
- Dark Mode: choose a light or dark user interface
- Continuous Wavelet Transform display for time/frequency impulse response analysis of individual channels and the combined response.
- Smaart® Control for live measurement streaming and capture directly into FIR Designer M.
- 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 FIR export formats for loading into FIR-capable processors and amplifiers
- 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, including a polar map (heatmap-style contour plot).
- Direct-to-processor (DTP) functionality:
- To LAKE PLM+ amplifiers for the XP 1, 2, 3 and 4 way modules, and to LAKE PLM+, PLM & D series amplifiers for the LAKE FIR 3-way module. Requires the FIR Designer LAKE plugin.
- 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”.
- To Marani processors over the local network.
- To Lab Gruppen IPX series amplifiers.
- 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.
- macOS and Windows versions. (Windows 10 22H2 & above. Or macOS 11 above)
- Read the release notes
Smaart is a registered trademark of Rational Acoustics LLC, Connecticut, USA.