StreamLite 2.5.0

• Test footsteps walks all around you, on three floors. One button now plays someone walking a full circle around
  you at ear level, then a full circle on the floor above you, then one on the floor below you (16 steps per circle,
  clockwise from the front). Every step is a point source at its exact angle and height, straight from the measured
  head responses, and the sound cube lights up where it is. The separate "360° walk" and "above / below" buttons are
  gone. With a custom 7-speaker HeSuVi file (no heights measured) it walks the ear-level circle.

• Always true 360°. The "7 virtual speakers" mode, the speaker angle sliders and the 360° precision slider are
  gone: every surround game is placed at the exact angle it meant (0.25° steps, full precision), and "Play stereo in 3D"
  uses the same renderer.
  Games still hand StreamLite their sound as 7.1, because that is the only multichannel format Windows games can send to
  an audio device. That's only the delivery: StreamLite works out each sound's real direction from it and doesn't play
  7 speakers. 7.1 carries no height, so in games you hear above and below from games with their own 3D audio (CS2,
  Valorant...). Cue sharpening deepens their height cues.

• Auto EQ. The profile menu (Headphones page and tray) starts with Auto EQ (follows your apps): your headphone EQ
  follows the app you're using. Auto EQ apps... lets you add any program to a profile (typed, or picked from the apps
  running now), remove it or move it to another profile. You can also pick the profile used when none of them runs.
  Updates keep your changes. Windows plays every app through one headphone EQ at a time, so when several are in use the
  game wins, then music, then chat.

• No more latency switches. "Lowest mic latency" (Settings) and the 3D "Low latency" switch are gone: both always
  run at the lowest delay this PC keeps up with.

  • 3D audio queues one Windows audio period + 2 ms for the headphones (was 1.5 periods) and starts with a 1 ms margin
    (was 3 ms), with Windows' "Pro Audio" priority. That's about 5 ms less than the old default.
  • After a dropout, the margin no longer slips back to the size that just failed 30 seconds later. That made a mic
    dropout about once a minute on some PCs. The 3D margin saved for the next start now also comes back down after 10
    minutes without a dropout, so one old hiccup doesn't add delay forever.

• AI settings that fit your PC. On the first start StreamLite looks at your CPU and graphics card once:

  • With 8 or more CPU threads, RNNoise moves up to DeepFilterNet 3 on the CPU (under 2% of the CPU, and only while
    an app records your mic).
  • Graphics cards with up to 4 GB get Low VRAM.

  A noise engine you picked yourself stays. status.txt shows what was found ("hardware tuning").

• status.txt: the 3D line also shows its delay and CPU use.

Credits

No new third-party code, models or data. The Test footsteps rings use the SADIE II head responses (already credited) at their measured elevations.

AI models and measured data

• DeepFilterNet 3 - AI noise removal (studio-quality model). Hendrik Schröter, Tobias Rosenkranz, Alberto N. Escalante-B., Andreas Maier. MIT or Apache-2.0. Model / data.
• torchDF - Streaming ONNX export of DeepFilterNet 3 (the model file StreamLite runs). grazder. MIT or Apache-2.0.
• RNNoise - Light AI noise removal (C# port of v0.1.1 and its trained model). Jean-Marc Valin, Mozilla, Xiph.Org Foundation. BSD-3-Clause. Model / data.
• SADIE II HRTF database - 3D audio: measured head responses (KU100 dummy head, KEMAR). University of York - C. Armstrong, L. Thresh, D. Murphy, G. Kearney. Apache-2.0.
• Robust Video Matting (Windows) - AI camera: cuts you out of the room (blur, green screen, picture, video). Shanchuan Lin, Linjie Yang, Imran Saleemi, Soumyadip Sengupta (ByteDance). GPL-3.0. Model / data.
• Ultra-Light-Fast-Generic-Face-Detector-1MB (UltraFace) (Windows) - AI camera: face tracking. Linzaer. MIT. Model / data.
• SoundGuys headphone measurements - Built-in correction for the Sennheiser MOMENTUM 5 (B&K 5128 measurement). SoundGuys. Measurement used with thanks.

Libraries and runtimes

• ONNX Runtime - Runs the AI models (and, from 2.3.0, optimizes the Low VRAM model files). Microsoft. MIT.
• DirectML (Windows) - Runs the AI models on any DirectX 12 graphics card. Microsoft. Microsoft Software License Terms (redistributable).
• .NET runtime (Linux) - Runs StreamLite for Linux (included). .NET Foundation and contributors. MIT.
• Avalonia UI (Linux) - The Linux interface. AvaloniaUI OÜ and contributors. MIT.
• SkiaSharp / HarfBuzzSharp (Linux) - Drawing and text for the Linux interface (Skia, HarfBuzz). Microsoft / .NET Foundation; Google (Skia); the HarfBuzz authors. MIT; BSD-3-Clause (Skia); MIT (HarfBuzz).
• Inter (Linux) - Interface font. Rasmus Andersson. SIL Open Font License 1.1.
• PipeWire / PulseAudio (Linux) - Linux audio (your system's libpulse and pactl). Wim Taymans and the PipeWire contributors; the PulseAudio developers. MIT / LGPL-2.1.

Code, ideas and research

• EarTrumpet (Windows) - How per-app audio routing works on Windows. File-New-Project. MIT.
• Impulcifer - HeSuVi 14-channel HRIR track order. Jaakko Pasanen. MIT.
• VCamSample (Windows) - Structure of the Windows 11 virtual camera. Simon Mourier. MIT.
• Guided Image Filtering (Windows) - AI camera: denoise, skin smoothing and crisp cut-out edges. Kaiming He, Jian Sun, Xiaoou Tang. Published research.

Downloaded when you ask for them

• AutoEq - Headphone corrections for thousands of headphones (Find my headphones). Jaakko Pasanen and the measurement contributors (oratory1990, crinacle, Rtings, Innerfidelity...). MIT. Model / data.
• VB-CABLE and Hi-Fi Cable (Windows) - The virtual mic cable and the 3D game audio device. VB-Audio Software (Vincent Burel). Donationware - please support VB-Audio.
• Equalizer APO (Windows) - System-wide headphone EQ. Jonas Thedering. GPL-2.0.

Built with

• WiX Toolset (Windows) - The Windows installer (MSI). .NET Foundation and contributors. MS-RL.
• Zig (Windows) - Builds the virtual camera's native DLL. Andrew Kelley and the Zig contributors. MIT.
• appimagetool (Linux) - The Linux AppImage. Simon Peter and the AppImage contributors. MIT.
• ONNX - Builds and adapts the model files (tools/make_camfx.py). ONNX Project Contributors (LF AI & Data). Apache-2.0.
• NumPy - Model-building scripts. NumPy Developers. BSD-3-Clause.
• onnxconverter-common - Half-precision Low VRAM model files. Microsoft. MIT.

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Which file do I need?

Your system	File
Windows 10/11	StreamLite-*-x64.msi. If SmartScreen warns you, click More info → Run anyway.
Windows, no install	StreamLite-*-win-x64-portable.zip
Ubuntu / Debian / Mint / Pop!_OS	streamlite_*_amd64.deb, then run sudo apt install ./streamlite_*_amd64.deb
Fedora / openSUSE	streamlite-*.x86_64.rpm
Arch / Manjaro / EndeavourOS	PKGBUILD, then run makepkg -si
Any Linux	StreamLite-*-x86_64.AppImage, or the linux-x64.tar.gz with ./install.sh

SHA256SUMS.txt lists the checksums of every file. Already have StreamLite? It updates itself when it starts.
New here? Read the manual. Something wrong? Use the
bug report.