# ECLIPSE AUDIO \- Home of FIR Designer: DSP Filter Design Software for Audio Professionals

> Eclipse Audio DSP software tools for audio professionals\. Design FIR \& IIR filters \& presets for loudspeakers \& DSP\-based audio devices\.

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## Pages
- [DSP Concepts \& Project Examples](https://eclipseaudio.com/dsp-concepts/)
- [Feature Guides for FIR Designer](https://eclipseaudio.com/feature-guides/)
- [SpeakerMeasure AES75 Test Software](https://eclipseaudio.com/speakermeasure/)
- [FIR Filter Design Tutorials](https://eclipseaudio.com/fir-filter-design-tutorial/)
- [FIR Designer Price](https://eclipseaudio.com/buy/)
- [DSP Software Download](https://eclipseaudio.com/demo/)
- [Eclipse Audio DSP software](https://eclipseaudio.com/)
- [Loudspeaker Measurements](https://eclipseaudio.com/loudspeaker-measurements/)
- [FIR Designer M crossover design software](https://eclipseaudio.com/fir-designer-m/)
- [FIR Designer audio filter software](https://eclipseaudio.com/fir-designer/)
- [About Michael Smithers – Principal \& Founder, Eclipse Audio](https://eclipseaudio.com/michael-smithers-audio-specialist/)
- [About Eclipse Audio](https://eclipseaudio.com/about/)
- [auditionDSP digital audio processor](https://eclipseaudio.com/auditiondsp/)
- [FIR Filter Guide](https://eclipseaudio.com/fir-filter-guide/)
- [DSP Software](https://eclipseaudio.com/products/)
- [FIR Creator EX audio filter software](https://eclipseaudio.com/fir-creator-ex/)
- [FIR Creator audio filter software](https://eclipseaudio.com/fir-creator/)
- [IIR Filter Designer \- Working with IIRs in FIR Designer](https://eclipseaudio.com/iir-filter-designer/)
- [Loading DSP Into Speaker Processors](https://eclipseaudio.com/fir-capable-products/)
- [Averager \- Free Speaker Measurement Averaging Software](https://eclipseaudio.com/averager/)

## Posts
- [New Video Tutorial: How to use the FIR Designer Gain/Polarity/Delay Tab](https://eclipseaudio.com/2026/05/28/new-video-tutorial-how-to-use-the-fir-designer-gpd-tab/)
- [FIR Creator EX \& FIR Creator updates \| What's New](https://eclipseaudio.com/2026/05/08/fir-creator-2-3/)
- [New Video Tutorial: How to use the FIR Designer Import Tab](https://eclipseaudio.com/2026/01/13/measurement-import-tutorial/)
- [New Video Tutorial: How to use the FIR Designer Target Tab](https://eclipseaudio.com/2026/03/23/target-tab-tutorial/)
- [FIR Designer \& FIR Designer M v4\.6 \| What's New](https://eclipseaudio.com/2026/01/22/fir-designer-4-6/)

## Testimonials
- [Pat Brown](https://eclipseaudio.com/testimonial/pat-brown/)
- [Mark Wilkinson](https://eclipseaudio.com/testimonial/15386/)
- [Ryan McCauley](https://eclipseaudio.com/testimonial/15391/)
- [Charlie Hughes](https://eclipseaudio.com/testimonial/15397/)
- [Peer Toftner](https://eclipseaudio.com/testimonial/peer-toftner/)

## Optional
- [Sitemap index](https://eclipseaudio.com/sitemap_index.xml)