Custom Loudspeaker Processing

Powerful DSP filter design software for audio professionals

Create custom FIR filters & complete mixed FIR+IIR presets for single & multi-way loudspeakers (or any DSP-based audio playback device).

Filter design involves complex computations. We do the math so you don’t have to. Just follow the workflow & use the controls to set the required parameters.

Load your audio measurements to get started. (Or use Direct Design mode to build FIR filters without measurements.)

Demo versions include pre-loaded measurements.

About FIR Filters Free Demo Version
About FIR Filters Free Demo Version

Filters & presets for EQ & so much more

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.

Limitless customization options

Single or multi-channel FIR or FIR+IIR design.

Real-time filter calculation & FIR error display.

Multiple FIR sample rates plus independent sample rates on input filtering & each output channel.

Automated, non-destructive resampling of imported measurements. (Measure at one sample rate and export filters at a different sample rate.)

Manual & auto FIR filter magnitude & phase adjustment, plus post-auto FIR EQ voicing.

Comprehensive range of IIR filter types & automatic IIR generation of parametric filters.

FIR filter resampling (change the sample rate of a FIR filter).

Integrated measurement averaging.

Product Features Full Video Tutorial
Product Features Full Video Tutorial

Brand emulations & integrations

Comprehensive range of different measurement file formats supported.

Smaart® Control for live measurement streaming & capture.

Branded IIR modes ensure IIR filter settings match the destination processor by automatically adjusting for brand-specific variations in IIR filter interpretation.

IIR Reference Editor with one-click filter conversion between processor brands.

Multiple FIR export formats for loading filters/presets into any product with user-accessible settings.

Direct-to-processor (DTP) functionality replaces manual export/load for some amps & processors.

Import Formats Supported Export Formats Supported
Import Formats Supported Export Formats Supported

Visualize & Audition Your Designs In Real-Time

Work in light or dark mode

Color-customizable plots with on-plot filter mouse control.

Wavelet Plot Section in FIR Designer M

Continuous Wavelet Transform display for time/frequency impulse response analysis.

Polar Map section in FIR Designer M

Polar plots for understanding on and off-axis behaviour of the custom preset with polar measurements.

Built-in auditionDSP audio player + processor. LISTEN to your projects and systems.

Use Cases

Our filter design tools are used by a range of audio professionals, including AV designers, integrators/technicians, system engineers, acoustic consultants, loudspeaker designers, embedded audio engineers, consumer device manufacturers, audio educators & more.

FIR Designer is the greatest piece of software to come to the pro-audio community in a decade.

The amount of man-hour time reduced is amazing moving from DSP to DSP. Every added IIR emulation makes it even easier to get a base system setup offline, before dialing in the house EQ on-site.

The last Jazz Ally job proved the software out to the highest level. Ideal to have the workflow with the Symetrix DSP. We did all the work in FIR Designer offline, including IIR room corrections & FIR corrections for passive cabinets. It was amazing to walk into the venue, plug it all in & achieve exactly our predicted spectrum around the room.
Mark DeArman
McCauley Sound
FIR Designer bridges the gap between complex system measurements and the production of the filters used for equalization and enhancement.

System tuning involves sculpting of the impulse response. While often done with a drag-and-drop DSP, a more powerful approach is to use the IR itself to produce the corrective filters.

We can now fix anomalies that we once had to live with.
Pat Brown
Synergetic Audio Concepts, Pro Sound Training
FIR Designer is a great tool. 

The layout of the GUI and the workflow for developing loudspeaker presets are well thought out. 

The built-in utility for translating filter parameters between different manufacturer’s DSP platforms is an incredible time saver. 

The measurement averaging feature is indispensable, as is being able to define a target response, for truly optimizing a loudspeaker’s response.
Charlie Hughes
Biamp Systems
Nothing competes with FIR Designer’s UI and workflow. It’s a great tool!

The real-time preview enables parameter changes to be evaluated quickly.

Inbuilt measurement averaging is a helpful inclusion and the truly unique IIR filter conversion is really valuable when working across different processor brands.
Sam Feine
Sonos
(Eclipse Audio’s) FIR Designer software dramatically changes the equation for filter design in smaller spaces.

We’re able to take the required measurements and design the  FIR filter in less than an hour.

Its a profoundly powerful piece of software.
Ryan McCauley
RMS Acoustics
I use FIR Designer M. It’s ideal for preset creation, fixed install tuning or on-the-spot live event jobs. It improves the overall response of both ‘solo’ systems & larger set-ups involving multiple sources.

It’s possible to match the magnitude & phase response between different product lines (& different manufacturers), set limiters and set specific crossover slopes (including some very exotic filter slopes).
Timo Beckman
Timo Beckman Geluidstechniek (Sound-engineering)
FIR Designer facilitates complete tuning of a DIY 5-way speaker, both on and off-axis, in less than a day. It’s easy, fast & accurate…it rocks!

The workflow allows for tuning of individual driver sections to meet specific target responses – for example, complementary linear-phase crossovers – along with tying the drivers together with correct polarites, levels, & delays. It’s quick to make several sets of FIR files for each driver, with various possible crossover points.

Final speaker tuning becomes a simple matter of choosing which set of crossover points give the smoothest measured off-axis responses.
Mark Wilkinson
DIY Speaker Builder

⟵ more user feedback ⟶

Filter Design Products

Windows + macOS

FIR Designer M

FIR Designer

FIR Creator EX

FIR Creator

COMPARE PRODUCTS
FREE DEMO DOWNLOAD

Free Tools

Windows + macOS

Averager

SpeakerMeasure

Latest News

Dark Mode in FIR Designer

New Dark Mode in FIR Designer

Posted on
In response to (many!) user requests, we’re pleased to announce that FIR Designer & FIR Designer M both now include a dark user interface theme…