LATEST NEWS

FIR Designer 2.6 now imports Monkey Forest SPK & Klipppel Impulse Response text files

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Current licensees can access the latest download on the “update available” dialog within FIR Designer 2.

FIR Designer 2.6.0 is now available and includes new import options plus some user interface updates. Notable updates (since the last update post for v2.4):

  • Monkey Forest (FourAudio) SPK files and Klippel Impulse Responses can now be loaded. Steps to extract data from a Klippel Impulse Response plot can be found here.
  • When importing a measurement file on the Import or Target tab, when “Normalise magnitude to max” is set, the “Magnitude offset (dB)” field now displays the normalisation gain. This is useful starting point when setting the offset gain manually.
  • Time based plots now have an optional millisecond (ms) scale and right-click now enables zoom-to-maximum (in addition to the “Max” buttons).
  • The Target file now has a use “Phase only” option which helps with matching loudspeakers based just on phase.
  • All lists and filter prototype tables now have a “Reset” option to take them back to defaults.

See the Release Notes (for all versions) here.

Learn more about FIR Designer or download a free demo (Windows or Mac).

Existing FIR Designer 1 license-holders are eligible for a USD $100 coupon towards the first-year purchase of FIR Designer 2.6; just contact us.

FIR Designer 2.6 adds Klippel and Four Audio's Monkey Forest SPK

Side Load Pre-Existing FIR Filters to Loudspeakers

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Pre-existing FIR filters – from sources other than FIR Designer/Creator – can be loaded (with or without resampling) in FIR Designer & FIR Creator EX. The filters can then be pushed – in combination with FIR Designer’s IIRs, gain, delay and polarity settings – to select Lab.gruppen Lake Processing & Powersoft amplifiers via Direct-To-Processor (DTP) functionality.

This video shows how to side load audio FIR Filters into FIR Designer when pushing a DSP preset to the LAKE 3-way module.

Learn more about FIR Designer or download a free demo (Windows or Mac).

Existing FIR Designer 1 license-holders are eligible for a USD $100 coupon towards the first-year purchase of FIR Designer 2.2; just contact us.

New FIR Creator EX shares FIR Designer’s advanced export options

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FIR Creator EX audio fir filter tool. Screenshot of Lake + Powersoft DTP export dialogsA new, standalone version of FIR Creator is now available: FIR Creator EX offers the same advanced export options found in FIR Designer, including the brand-new Direct-To-Processor functionality for integration with Lake & Powersoft amplifiers. It will be priced at a one-off cost of USD$299+tax (vs. FIR Creator @USD$249+tax). Unlike the mostly static feature set of FIR Creator, FIR Creator EX will be updated as necessary to incorporate any new DTP integrations developed between FIR Designer & other brands (ie. in addition to Lake & Powersoft). However, beyond updating DTP functionality, FIR Creator EX won’t receive updates (apart from essential bug fixes), as our development efforts continue to be focused on the subscription-based FIR Designer.

See the Product Comparison Table to compare features of FIR Creator, FIR Creator EX & FIR Designer

The specific additions to FIR Creator EX (vs. FIR Creator) are as follows:

  • Two additional FIR Filter sample rates: 12 and 24 kHz (FIR Creator has 44.1, 48 & 96 kHz)
  • Three additional Export formats: Powersoft, Linea Research & EV/Dynacord (FIR Creator has text [inc. CSV], Binary & WAV) 
  • Processor gain, polarity & delay settings (not available in FIR Creator)
  • Generate complete loudspeaker presets via the processor channel summary setting export option (not available in FIR Creator)
  • Direct-to-processor functionality (not available in FIR Creator):
    • To LAKE PLM, PLM+ & D series amplifiers. Requires the FIR Designer LAKE plugin and the LAKE FIR 3-way module, & works over a (fixed or wifi) network.
    • 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).

Learn more about FIR Creator / FIR Creator EX or download a free demo (Windows or Mac).

Tell us which amplifier brands you’d most like to see facilitating direct-to-processor FIR Filters/DSP Presets from Eclipse Audio’s FIR tools

FIR Designer 2.4 – New Direct-To-Processor Function for Powersoft

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Powersoft FIR filter design & load with FIR Designer. Screenshot of FIRd DTP dialog.

FIR Designer 2.4 now integrates with Powersoft amplifiers. Transfer a DSP signal chain directly from FIR Designer to Armonía for use in Powersoft amplifiers via our new DTP (Direct-To-Processor) functionality. Pre-existing FIR filters (from sources other than FIR Designer) can also be loaded – with or without resampling – and transferred in combination with FIR Designer’s IIRs, gain, delay and polarity settings.

DTP for Powersoft works via an XML file which can be loaded into the “Speaker EQ” or “Output EQ” on X, Ottocanali, Quattrocanali and DueCanali series amplifiers.

Powersoft is the second brand to offer close integration with FIR Designer (LabGruppen LAKE PLM, PLM+ & D series amplifier integration was released in FIRd v2.3). We’re hoping to provide direct integration with other amp/processor brands in the near future. In the meantime, FIR Designer can export data in a variety of formats for subsequent upload into most FIR-capable productsWe’d love your feedback: Which amplifier brands would you most like to see facilitating direct-to-processor FIR Filters/DSP chains from FIR Designer? Tell us here.

For more details on v2.4, see the Release Notes.

Learn more about FIR Designer or download a free demo (Windows or Mac).

Existing FIR Designer 1 license-holders are eligible for a USD $100 coupon towards the first-year purchase of FIR Designer 2.4; just contact us.

 

Lake FIR filter designer. Design & load with FIR Designer. Screenshot of FIRd DTP dialog.

FIR Designer 2.3 – New Direct-To-Processor Function for LAKE

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FIR Designer now integrates with LAKE PLM & D series amplifiers. Push a complete DSP signal chain directly from FIR Designer to the LAKE FIR 3-way module via our new DTP (Direct-To-Processor) functionality. Watch the video here. Pre-existing FIR filters (from sources other than FIR Designer) can also be pushed – with or without resampling – in combination with FIR Designer’s IIRs, gain, delay and polarity settings.

DTP works locally – over either a fixed network or WiFi – with a new LAKE Controller plugin (supplied in the FIR Designer 2.3.0 Windows installer). Data transfer takes only a few clicks.

We’re hoping to provide direct integration with other amp/processor brands in the near future. In the meantime, FIR Designer can export data in a variety of formats for subsequent upload into most FIR-capable products.

We’d love your feedback: Which amplifier brands would you most like to see facilitating direct-to-processor FIR Filters/DSP chains from FIR Designer? Tell us here.

For more details on v2.3, see the Release Notes.

Learn more about FIR Designer or download a free demo (Windows or Mac).

Existing FIR Designer 1 license-holders are eligible for a USD $100 coupon towards the first-year purchase of FIR Designer 2.2; just contact us.

IIR vs FIR - shaping loudspeaker phase with FIR Designer - screenshot

Shaping Loudspeaker Phase: FIR vs IIR

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FIR filtering offers advantages over traditional IIR all-pass filters when flattening the phase of a loudspeaker or shaping the phase to match others in an installation. IIR filters have a negative phase gradient & only provide time delay with increasing frequency. However, FIR filtering can implement phase responses with both positive & negative gradients, providing arbitrary phase/time shaping of a loudspeaker response.

FIR Designer offers traditional 1st & 2nd order minimum-phase all-pass filter prototypes, plus maximum-phase (inverted phase) versions & a unique 4th order parametric phase filter with a range of ±90 degrees, adjustable BW & frequency. An unlimited number of prototypes can be used to create the combined FIR filter phase response.

Learn more about FIR Designer or download a free demo (Windows or Mac).

Existing FIR Designer 1 license-holders are eligible for a USD $100 coupon towards the first-year purchase of FIR Designer 2.2; just contact us.

Create Custom Loudspeaker Presets

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Use either FIR Designer or FIR Creator EX to create a complete loudspeaker preset, with the Gain/Polarity/Delay options now available in the filter creation workflow. On the ‘Export’ tab, save the gain, polarity, delay and IIR filters in a new Summary file, which – in combination with the FIR filter file – contain everything needed for a complete DSP channel signal chain. Use a single chain for filtering a full bandwidth loudspeaker, or create multiple DSP channel signal chains to make multi-way loudspeaker presets.

Creating a Loudspeaker Preset in FIR Designer

Loudspeaker Measurement Resampling

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FIR Designer, Creator & Creator EX store the imported loudspeaker measurement in its “native” sample rate (or mag/phase format) so no information is lost during import. Whenever the FIR filter design sample rate is changed, as when exporting a filter for a processor with a different sample rate, the original measurement is resampled to the FIR filter design sample rate.

SUPPORTED IN… FIR FILTER SAMPLE RATES
FIR Creator 44.1, 48 & 96 kHz
FIR Creator EX 12, 24, 44.1, 48 & 96 kHz
FIR Designer 2 12, 24, 44.1, 48, 96 & 192 kHz

 

See a list of FIR-capable products (amplifiers & speaker processors).

See supported file formats for measurement import.

Loudspeaker FIR filter sample rate resampling in FIR Designer (infographic)

Complementary Linear Phase Crossovers in FIR Designer

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Unlike common Linkwitz-Riley filters, many other high & low-pass IIR &/or FIR crossover filters don’t sum to unity or have matched phase.

For a perfectly flat summed response, FIR Designer can calculate a COMPLEMENTARY HP (or LP) filter from the chosen LP (or HP) filter, when set to linear-phase.

The filter pair can be used for targets in multi-way designs, providing more crossover options. Works for Bessel, Butterworth, Chebyshev I & II & Elliptic filter prototypes. (FIR Designer also has a variety of linear-phase brick-wall crossover filters.)

FIR Crossover design within FIR Designer: Complementary linear phase crossover infographic, using Chebyshev.

 

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