Gateway OS V1.0.5

Gateway OS V1.0.5

Public binary performance release for Gateway OS.

Status

• Release type: Public binary performance update
• Version: 1.0.5
• Source code: Not included in this release repository
• Included artifacts:
  • Windows VST3 x64
  • macOS AU
  • macOS VST3
• Previous V1.0.4 binaries remain available as a separate download.

V1.0.5 Apple Silicon Multicore Update

• Optimizes Gateway OS multicore oversampling behavior on Apple Silicon Macs.
• Detects macOS performance-core topology at runtime instead of targeting one specific chip model.
• Applies to M-series CPUs from M1 onward, including Pro, Max, and Ultra variants, while retaining fallback behavior for future macOS-compatible Apple Silicon systems.
• Leaves realtime headroom for the DAW/audio graph instead of assigning every available performance core to plugin worker threads.
• Balances polyphase oversampling phases across the chosen thread count, so high oversampling modes such as 16x and 32x do not overload the audio callback thread when thread counts are capped.
• Assigns macOS worker threads high interactive QoS for better realtime scheduling behavior.
• Keeps the oversampling result and audio quality target unchanged; this update changes scheduling/threading behavior, not the oversampling sound.

Validation

• GitHub macOS build passed auval -v aufx G100 SMfo.
• VERIFYING CUSTOM UI passed.
• Staged macOS AU and VST3 bundles were ad-hoc signed and verified by codesign --verify --deep --strict.
• Windows VST3 and macOS AU/VST3 artifacts were built from source commit 540c662.
• V1.0.5 private build workflow:
  • https://github.com/SlamminMofo/GatewayOS/actions/runs/27509551795

SHA256

• GatewayOS-V1.0.5-macOS-AU-VST3.zip
  • f5fe305a302aba8d536b49dcb88aac836ccf9cf25034386e09895f654991d743
• GatewayOS-V1.0.5-Windows-VST3-x64.zip
  • e3391728f7fd3d7f02e44e96bdbf80911196e205361d0f2ebaf2d8146a64adbb

Highlights

• Correct WaveNet-family oversampling modes: Off, 2x, 3x, 4x, 8x, 16x, and 32x.
• Supported models run at the requested internal multiple with time/dilation scaling to preserve capture feel while reducing aliasing.
• Multicore polyphase mode is designed to reduce oversampling wall-clock CPU cost while remaining bit-identical to single-core mode.
• Apple Silicon-specific multicore scheduling improves realtime behavior for macOS AU/VST3 users.
• Main-window OS/MC status readout.
• Theme-color selector with compact dot palette.
• EQ, noise gate, slim, input calibration, IR loading, and pre/post EQ routing included.

Research Background

• R. E. Crochiere and L. R. Rabiner, "Interpolation and Decimation of Digital Signals: A Tutorial Review", Proceedings of the IEEE, 1981. https://doi.org/10.1109/PROC.1981.11969
• P. P. Vaidyanathan, "Multirate Digital Filters, Filter Banks, Polyphase Networks, and Applications: A Tutorial", Proceedings of the IEEE, 1990. https://ieeexplore.ieee.org/document/52200
• J. O. Smith and P. Gossett, "A Flexible Sampling-Rate Conversion Method", ICASSP 1984. https://ccrma.stanford.edu/~jos/resample/
• Z. Cvetkovic and M. Vetterli, "Oversampled Filter Banks", IEEE Transactions on Signal Processing, 1998. https://doi.org/10.1109/78.668721
• J. D. Parker, V. Zavalishin, and E. Le Bivic, "Reducing the Aliasing of Nonlinear Waveshaping Using Continuous-Time Convolution", DAFx-16, 2016. https://www.dafx.de/paper-archive/2016/dafxpapers/20-DAFx-16_paper_27-PN.pdf
• A. Carson, V. Valimaki, A. Wright, and S. Bilbao, "Resampling Filter Design for Multirate Neural Audio Effect Processing", 2025. https://arxiv.org/abs/2501.18470
• R. Sato and J. O. Smith III, "Aliasing Reduction in Neural Amp Modeling by Smoothing Activations", 2025. https://arxiv.org/abs/2505.04082
• A. Carson, A. Wright, and S. Bilbao, "Anti-aliasing of Neural Distortion Effects via Model Fine Tuning", 2025. https://arxiv.org/abs/2505.11375
• A. Carson, A. Wright, J. Chowdhury, V. Valimaki, and S. Bilbao, "Sample Rate Independent Recurrent Neural Networks for Audio Effects Processing", 2024. https://arxiv.org/abs/2406.06293
• R. Yoneyama, A. Miyashita, R. Yamamoto, and T. Toda, "Wavehax: Aliasing-Free Neural Waveform Synthesis Based on 2D Convolution and Harmonic Prior for Reliable Complex Spectrogram Estimation", 2024. https://arxiv.org/abs/2411.06807

Install Notes

Windows:

• Copy Gateway OS V1.0.5.vst3 to C:\Program Files\Common Files\VST3\
• Rescan plugins in the DAW.

macOS:

• Copy Gateway OS V1.0.5.component to ~/Library/Audio/Plug-Ins/Components/
• Copy Gateway OS V1.0.5.vst3 to ~/Library/Audio/Plug-Ins/VST3/
• Rescan plugins in the DAW.

If a macOS host cached an older AU/VST3 metadata or UI state, reboot or clear the host/plugin cache before rescanning.