Sennet
Copyright 2026 The Sennet authors

Sennet is licensed under the Apache License, Version 2.0 (see LICENSE). Third-party
speech components are listed under "Speech" below. The built web client bundles the
third-party fonts below, each under the SIL Open Font License, Version 1.1, whose
text follows the list. Every npm package in the built client, the fonts included, is
listed with its license text in licenses.txt beside it, which Settings → About links to.

Newsreader
  Copyright 2020 The Newsreader Project Authors (https://github.com/productiontype/Newsreader)
  Packaged by Fontsource as @fontsource-variable/newsreader. License: SIL OFL 1.1.

Inter
  Copyright 2016 The Inter Project Authors (https://github.com/rsms/inter)
  Packaged by Fontsource as @fontsource-variable/inter. License: SIL OFL 1.1.

JetBrains Mono
  Copyright 2020 The JetBrains Mono Project Authors (https://github.com/JetBrains/JetBrainsMono)
  Packaged by Fontsource as @fontsource-variable/jetbrains-mono. License: SIL OFL 1.1.

shadcn/ui styles
  frontend/src/shadcn.css is copied from the shadcn package (4.22.1, dist/tailwind.css) and
  is in the built client's stylesheet. Copyright (c) 2023 shadcn. License: MIT:

  Permission is hereby granted, free of charge, to any person obtaining a copy of this
  software and associated documentation files (the "Software"), to deal in the Software
  without restriction, including without limitation the rights to use, copy, modify, merge,
  publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons
  to whom the Software is furnished to do so, subject to the following conditions:

  The above copyright notice and this permission notice shall be included in all copies or
  substantial portions of the Software.

  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED,
  INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR
  PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE
  FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
  OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
  DEALINGS IN THE SOFTWARE.

Speech
  Sennet's speech dependencies are installed by pip or uv, and its speech models are
  downloaded by `sennet setup`; none of them are part of this repository.

  GPL-3 components. Kokoro's text-to-phoneme step uses phonemizer (GPL-3.0-or-later,
  https://github.com/bootphon/phonemizer) and espeak-ng (GPL-3.0-or-later,
  https://github.com/espeak-ng/espeak-ng, shipped in the espeakng-loader wheel). Both load
  into the Sennet process. Sennet's own code remains under the Apache License 2.0,
  but a distribution that bundles Sennet with its speech dependencies (for example a
  container image, a system package or a frozen binary) must be offered under the terms of
  GPL-3.0.

  libopus (optional)
    Copyright Xiph.Org Foundation, Skype Limited, Octasic, Jean-Marc Valin, Timothy B.
    Terriberry, CSIRO, Gregory Maxwell, Mark Borgerding, Erik de Castro Lopo and others
    (https://opus-codec.org). License: BSD-3-Clause. Not bundled: Sennet loads the system's
    libopus when it is installed, for Opus voice audio. Opus is covered by royalty-free patent
    licenses (https://opus-codec.org/license/).

  Parakeet TDT 0.6B v2
    Copyright NVIDIA Corporation (https://huggingface.co/nvidia/parakeet-tdt-0.6b-v2).
    License: CC-BY-4.0. ONNX export by istupakov
    (https://huggingface.co/istupakov/parakeet-tdt-0.6b-v2-onnx).
  Kokoro-82M v1.0
    Copyright hexgrad (https://huggingface.co/hexgrad/Kokoro-82M). License: Apache-2.0.
    ONNX export by thewh1teagle (https://github.com/thewh1teagle/kokoro-onnx, MIT).
    src/sennet/speech/kokoro_vocab.json is Kokoro-82M's phoneme vocabulary.
  Silero VAD v6.2
    Copyright Silero Team (https://github.com/snakers4/silero-vad). License: MIT.
  smart-turn v3.2
    Copyright (c) 2024–2025, Daily (https://github.com/pipecat-ai/smart-turn).
    License: BSD-2-Clause. Model from https://huggingface.co/pipecat-ai/smart-turn-v3.
    src/sennet/speech/turn.py computes its Whisper-style log-mel input in NumPy, following
    the feature extractor in Hugging Face Transformers (Apache-2.0).
  openWakeWord v0.5.1 models
    Copyright David Scripka (https://github.com/dscripka/openWakeWord). The mel spectrogram
    and speech embedding models are Apache-2.0 (the embedding is Google's speech_embedding,
    https://tfhub.dev/google/speech_embedding/1, Apache-2.0). The pre-trained wake word models
    ("hey jarvis", "hey mycroft", "hey rhasspy", "alexa") are CC-BY-NC-SA-4.0, for
    non-commercial use only. `sennet setup` downloads the one you choose, if any; it runs in the
    browser.
  "hey sennet" wake word model
    Trained for Sennet with openWakeWord's training code (training/wakeword), on clips from
    piper-sample-generator's LibriTTS-R voice and openWakeWord's ACAV100M, AudioSet and FMA
    negatives. License: CC-BY-NC-SA-4.0, for non-commercial use only, as openWakeWord's own
    phrases are. Model from https://huggingface.co/hey-sennet/wakeword; `sennet setup`
    downloads it if you choose it.
    frontend/src/voice/wakeword.ts follows openWakeWord's streaming feature code (Apache-2.0).
  ONNX Runtime Web 1.30.0 WebAssembly
    Copyright Microsoft Corporation (https://github.com/microsoft/onnxruntime). License: MIT.
    Downloaded by `sennet setup` and served to the browser for the wake word.
  onnx-asr (MIT), ONNX Runtime (MIT), NumPy (BSD-3-Clause).
  The `cuda` extra installs NVIDIA's CUDA and cuDNN wheels under the NVIDIA software
  license agreements that come with them.

Setup
  Rich (MIT), questionary (MIT) and prompt_toolkit (BSD-3-Clause) draw `sennet setup`.

Pairing
  segno (BSD-3-Clause) draws the QR codes for pairing a device.

-------------------------------------------------------------------------------
This Font Software is licensed under the SIL Open Font License, Version 1.1.
This license is copied below, and is also available with a FAQ at:
http://scripts.sil.org/OFL


-----------------------------------------------------------
SIL OPEN FONT LICENSE Version 1.1 - 26 February 2007
-----------------------------------------------------------

PREAMBLE
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