New Capture Topologies • Tri‑Mic Space — Phase‑coherent triangular array for natural stereo depth and virtual mic synthesis. • Tetrahedral Array — True 4‑channel volumetric capture for Ambisonic workflows and 3D post‑production. • Improved Dual‑Mic Engine — Better correlation metrics, tighter phase alignment, and cleaner stereo grouping. Expanded IR Profile Generation • New Mono Profiles: Phase‑Aligned Blend, DTW Morph Blend, Rotated Virtual Cardioid, Virtual Mic Projection. • New Stereo Profiles: Mid/Side Matrix, Psychoacoustic Halo, Frequency‑Widened, Phantom Side (Blumlein). • Ambisonics Output: 4‑channel B‑Format export for immersive mixing environments. • Massive Output Variety: More combinations, more blends, more spatial renderings — all exportable in one pass. Workflow Enhancements • Faster topology switching • Cleaner UI for multi‑mic setups • More reliable phase‑coherence checks • Smarter default settings for quick captures • Optimized export pipeline for large profile batches Overall Impulse 1.9 is a full jump in dimensional capture, spatial accuracy, and creative output. It’s not just “stereo IRs” anymore — it’s a complete multi‑mic, multi‑profile IR workstation.

This update introduces improved environmental analysis, enhanced deconvolution stability, and more reliable impulse trimming. Capture workflows are now faster, safer, and more consistent across all supported devices.

Corrected an accidental placeholder submission. This version contains the complete, intended Impulse feature set and workflow.

• Phase-Accurate Impulse Responses: Our latest algorithm ensures that your impulse responses are not only accurate but also phase-accurate, allowing for more precise and realistic simulations. • Advanced Signal Processing: Our proprietary signal processing techniques provide unparalleled noise reduction, distortion correction, and frequency response accuracy, resulting in the powerfully accurate and great sounding impulse responses. • Improved User Interface: Our intuitive and user-friendly interface makes it easy to navigate and use the software, even for those new to impulse response measurement. • Enhanced Compatibility: ImpulseResponse now supports a wider range of audio interfaces and devices, making it easier to integrate into your existing workflow.

We’ve taken our professional acoustic engine and refined it for perfect real‑world performance, ensuring your captures are as accurate, readable, and perfectly aligned as possible. Here’s what changed: Frequency‑Banded Coherence Metering – A single broadband phase number hides comb filtering. We’ve replaced it with a real‑time, magnitude‑squared coherence meter split into Low (20–250 Hz), Mid (250–2 kHz), and High (2–20 kHz) bands. Now you can instantly see phase alignment and frequency cancellations when blending dual microphones. Universal IR Compatibility – While our internal deconvolution math remains flawlessly 64‑bit, we now dynamically downcast the final exports to standard 32‑bit float WAVs. Say goodbye to unreadable files and static-filled previews; your IRs are now instantly compatible with any DAW, IR loader, or profiling amp. Sample‑Accurate Latency Compensation – A new cross‑correlation alignment routine analyzes your capture and detects the exact sample where the sweep begins, perfectly syncing the recorded room response with the mathematical reference for artifact‑free deconvolution. Bit‑Perfect Reference Matching – The math engine now dynamically ingests the exact playback buffer emitted by your iOS hardware, eliminating precision mismatches between what the math expected and what your speaker actually played. Automated Peak Normalization – Extracted impulse responses are now automatically peak‑normalized to -1 dBFS immediately following the inverse FFT. Your IRs are now staged at the optimal volume for immediate, out-of-the-box use. The result: An impulse response capture tool that doesn’t just do the math perfectly, but guarantees an instantly usable, universally compatible, and phase-accurate profile every single time.

We started with a simple impulse‑response capture tool. After rigorous testing and feedback, we’ve rebuilt the core measurement engine to meet professional acoustic standards. Here’s what changed: Full double‑precision processing – All critical calculations (sweep synthesis, FFT, deconvolution, IR storage) now use 64‑bit floating point, preserving detail across the entire dynamic range. Complete control over the measurement – You can now set sweep duration, start/end frequencies, pre‑ringing offset, tail length, and regularisation epsilon – no hidden defaults. Raw IR export – Untrimmed impulse responses are saved alongside trimmed versions, giving you full transparency and data sovereignty. Reproducible pink noise – The preparation noise is now seeded, so you can repeat the exact same monitoring conditions across sessions. Cryptographic provenance – Every exported WAV file includes a SHA‑256 checksum in the session log, ensuring integrity. Performance boosts – Vectorised vDSP routines accelerate metering, mono mixing, and stereo interleaving. The result: a scientifically rigorous, fully documented IR measurement tool ready for publication‑quality work.

• Resolved an issue where pink noise playback could intermittently drop out on certain audio interfaces. • Improved measurement stability and overall reliability during impulse response capture.