k2-fsa

Issues somebody may already be working on are listed last. List everything by date

• Rust API: derive serde Deserialize/Serialize on the config structs

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  Difficulty 4/5 3-5 days Newbie friendliness 52/100

  k2-fsa/sherpa-onnx#4026 · 1 comment · Opened Oct 8, 2026

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• EMA Lightning Turkish TTS Android 12 system TTS APK request

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  Difficulty 5/5 Over a week Newbie friendliness 32/100

  k2-fsa/sherpa-onnx#4025 · Opened Oct 7, 2026

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• VITS ZH-LL and Fanchen C: original weight provenance and iOS redistribution permission

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  Difficulty 5/5 Over a week Newbie friendliness 25/100

  k2-fsa/sherpa-onnx#4023 · 1 comment · Opened Oct 7, 2026

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• Would you accept a Pali (pi) TTS model with a lexicon.txt?

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  Difficulty 4/5 3-5 days Newbie friendliness 25/100

  k2-fsa/sherpa-onnx#4020 · 2 comments · Opened Oct 5, 2026

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• Licence files and checkpoint provenance for two exported models

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  Difficulty 3/5 Half a day Newbie friendliness 40/100

  k2-fsa/sherpa-onnx#4015 · Opened Oct 2, 2026

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• Windows Smart App Control blocks unsigned sherpa-onnx-c-api.dll

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  Difficulty 4/5 3-5 days Newbie friendliness 20/100

  k2-fsa/sherpa-onnx#4011 · Opened Oct 1, 2026

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• Request: eSpeak-NG provenance and licensing evidence for kokoro-en-v0_19

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  Difficulty 4/5 3-5 days Newbie friendliness 25/100

  k2-fsa/sherpa-onnx#4002 · Opened Sep 29, 2026

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• [Bug] FunASR-Nano INT8 produces empty output (0 tokens) on Windows x86_64 CPU (int8 overflow / premature EOS)

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  Difficulty 4/5 3-5 days Newbie friendliness 28/100

  k2-fsa/sherpa-onnx#3993 · 2 comments · Opened Sep 27, 2026

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• [BUG] Heap-buffer-overflow (OOB read) in offline transducer greedy search decoder when decoder.onnx vocab_size metadata mismatches joiner output width

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  Difficulty 4/5 3-5 days Newbie friendliness 25/100

  k2-fsa/sherpa-onnx#3983 · 5 comments · Opened Sep 24, 2026

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• [Android] Fix memory leak during repeated inference / Simulated Streaming (RAM grows up to 2GB)[BUG]

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  Difficulty 4/5 3-5 days Newbie friendliness 12/100

  k2-fsa/sherpa-onnx#3979 · 2 comments · Opened Sep 23, 2026

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• pocket-tts model README says "non-commercial" but the bundled LICENSE is CC-BY-4.0

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  Difficulty 2/5 1-3 hours Newbie friendliness 42/100

  k2-fsa/sherpa-onnx#3971 · 1 comment · Opened Sep 21, 2026

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• Request: TTS-free artifact and clarification on native library licensing / distribution compliance

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  Difficulty 5/5 Over a week Newbie friendliness 12/100

  k2-fsa/sherpa-onnx#3969 · 1 comment · Opened Sep 21, 2026

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• Licence for sherpa-onnx-streaming-zipformer-small-ru-vosk-2025-08-16?

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  Difficulty 4/5 3-5 days Newbie friendliness 20/100

  k2-fsa/sherpa-onnx#3914 · 3 comments · Opened Sep 3, 2026

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• [BUG] 热词偶尔生效的问题

  May be free again @modelpath-dev claimed this 34 days ago, and no pull request is open. Open

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  Difficulty 4/5 3-5 days Newbie friendliness 22/100

  k2-fsa/sherpa-onnx#3908 · 6 comments · Opened Sep 1, 2026

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• [FEATURE] Add split-model export for MeloTTS and TTS support for RKNN3/RK1828 NPU

  May be free again @pannaga-perumal claimed this 36 days ago, and no pull request is open. Open

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  Difficulty 5/5 Over a week Newbie friendliness 12/100

  k2-fsa/sherpa-onnx#3902 · 1 comment · Opened Aug 27, 2026

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• [BUG] Windows: non-ASCII file paths are incorrectly decoded by sherpa-onnx

  May be free again @modelpath-dev claimed this 36 days ago, and no pull request is open. Open

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  bug

  Difficulty 3/5 1-2 days Newbie friendliness 62/100

  k2-fsa/sherpa-onnx#3885 · 4 comments · Opened Aug 22, 2026

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• [FEATURE] Add Quds v4 persian models

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  Difficulty 4/5 3-5 days Newbie friendliness 20/100

  k2-fsa/sherpa-onnx#3884 · Opened Aug 21, 2026

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• [FEATURE] when run OfflineTts, throw error

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  Difficulty 5/5 Over a week Newbie friendliness 15/100

  k2-fsa/sherpa-onnx#3882 · 1 comment · Opened Aug 20, 2026

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• Streaming support for Qwen3-ASR（流式支持，降低端侧识别时延）

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  Difficulty 5/5 Over a week Newbie friendliness 12/100

  k2-fsa/sherpa-onnx#3865 · 7 reactions · Opened Aug 11, 2026

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• Request complete manifest for Canary 180M Flash INT8 release asset

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  Difficulty 2/5 1-3 hours Newbie friendliness 25/100

  k2-fsa/sherpa-onnx#3864 · 1 comment · Opened Aug 11, 2026

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• One unified JSON - a ONNX models JSON

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  Difficulty 3/5 1-2 days Newbie friendliness 25/100

  k2-fsa/sherpa-onnx#3855 · Opened Aug 10, 2026

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• [FEATURE]

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  Difficulty 5/5 Over a week Newbie friendliness 10/100

  k2-fsa/sherpa-onnx#3854 · 2 comments · Opened Aug 10, 2026

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• Licence of the released streaming-zipformer weights (upstream repo declares none, export mirror declares Apache-2.0)

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  Difficulty 4/5 1-2 days Newbie friendliness 20/100

  k2-fsa/icefall#2102 · Opened Aug 7, 2026

• Model Request: Mana-Persian-Piper (fa-IR)

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  Difficulty 3/5 1-2 days Newbie friendliness 62/100

  k2-fsa/sherpa#843 · 1 comment · Opened Aug 7, 2026

• [BUG] Streaming zipformer silently produces no output on Snapdragon 8 Elite Gen 5 (SM8850): onnxruntime 1.27.0 miscomputes the encoder, 1.28.0 fixes it

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  Difficulty 3/5 3-5 days Newbie friendliness 32/100

  k2-fsa/sherpa-onnx#3845 · 1 comment · Opened Aug 7, 2026

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• macOS shared libs are built with deployment target 15.5 — strong MLComputePlan reference crashes every macOS < 15 app at launch

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  Difficulty 4/5 3-5 days Newbie friendliness 25/100

  k2-fsa/sherpa-onnx#3840 · Opened Aug 4, 2026

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• Finnish TTS support: Issue with VITS Piper pronunciation and Supertonic-3 latency on Android

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  Difficulty 5/5 Over a week Newbie friendliness 15/100

  k2-fsa/sherpa-onnx#3813 · 2 comments · Opened Jul 28, 2026

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• KWS recall drops sharply for short (3-phone) English keywords

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  Difficulty 5/5 Over a week Newbie friendliness 18/100

  k2-fsa/sherpa-onnx#3809 · Opened Jul 28, 2026

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• [Build] 'no matching function for call to operator delete' in OpenFST across various Clang environments

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  Difficulty 2/5 1-3 hours Newbie friendliness 58/100

  k2-fsa/sherpa-onnx#3803 · 4 comments · Opened Jul 24, 2026

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• License clarification requested for KWS pretrained models (gigaspeech-3.3M and zh-en-3M)

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  Difficulty 2/5 1-3 hours Newbie friendliness 20/100

  k2-fsa/sherpa-onnx#3802 · 5 comments · 2 reactions · Opened Jul 24, 2026

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• Request Android 4.4 (API 19) compatible builds with --hash-style=sysv or --hash-style=both

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  Difficulty 4/5 3-5 days Newbie friendliness 25/100

  k2-fsa/sherpa-onnx#3800 · 3 comments · 1 reaction · Opened Jul 24, 2026

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• [BUG] KeywordSpotter and streaming zipformer2 ASR broken on macOS arm64 (Apple M4) in 1.13.4 — bundled ORT 1.27.0 SME Conv bug, fixed in ORT 1.27.1

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  bug

  Difficulty 3/5 1-2 days Newbie friendliness 35/100

  k2-fsa/sherpa-onnx#3791 · 2 comments · 2 reactions · Opened Jul 23, 2026

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• Rust crate: prebuilt static libs require GLIBCXX_3.4.29+ (GCC 11+) — document or detect at build time?

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  Difficulty 2/5 1-3 hours Newbie friendliness 55/100

  k2-fsa/sherpa-onnx#3779 · Opened Jul 21, 2026

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• [BUG] Node addon OnlineRecognizer returns near-empty results on some macOS arm64 machines after 1.12.34 -> 1.13.4

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  Difficulty 4/5 Over a week Newbie friendliness 15/100

  k2-fsa/sherpa-onnx#3776 · 5 comments · Opened Jul 20, 2026

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• NeMo TDT offline transducer (parakeet-tdt v2/v3) decodes to empty on Windows; whisper + zipformer work on the same audio

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  Difficulty 4/5 3-5 days Newbie friendliness 25/100

  k2-fsa/sherpa-onnx#3767 · 1 comment · Opened Jul 18, 2026

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• [FEATURE] Add support for AMD XDNA NPU

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  Difficulty 5/5 Over a week Newbie friendliness 10/100

  k2-fsa/sherpa-onnx#3761 · 1 reaction · Opened Jul 15, 2026

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• [BUG] HarmonyOS sherpa_onnx 1.13.3 crashes loading Supertonic 3 vocoder — ai.onnx.ml opset 5 not supported

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  Difficulty 4/5 3-5 days Newbie friendliness 30/100

  k2-fsa/sherpa-onnx#3759 · 1 comment · Opened Jul 13, 2026

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• [FEATURE] PocketTTS: support newer Kyutai exports (French / distilled v2) - current implementation only works with the January english bundle

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  Difficulty 5/5 Over a week Newbie friendliness 12/100

  k2-fsa/sherpa-onnx#3755 · 1 reaction · Opened Jul 12, 2026

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• Kokoro int8 on Android/ARM: generate() intermittently returns an entire sentence as rail-pinned garbage (samples pinned at ~+1.0); fp32 unaffected

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  invalid

  Difficulty 5/5 Over a week Newbie friendliness 8/100

  k2-fsa/sherpa-onnx#3754 · 1 comment · 1 reaction · Opened Jul 11, 2026

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• Piper VITS: missing pad token after BOS drops the first phoneme of every utterance

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  Difficulty 1/5 Under an hour Newbie friendliness 85/100

  k2-fsa/sherpa-onnx#3752 · 1 comment · Opened Jul 11, 2026

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• Scudo memory crash on Motorola Android devices when using TTS service

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  invalid limited-information wontfix

  Difficulty 4/5 3-5 days Newbie friendliness 18/100

  k2-fsa/sherpa-onnx#3751 · 4 comments · Opened Jul 11, 2026

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• Breaking Change: Remove espeak-ng and piper-phonemize dependency

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  Difficulty 5/5 Over a week Newbie friendliness 15/100

  k2-fsa/sherpa-onnx#3731 · 10 comments · 11 reactions · Opened Jul 8, 2026

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• [FEATURE] Word-level timing/boundary callback for TTS output

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  Difficulty 5/5 Over a week Newbie friendliness 18/100

  k2-fsa/sherpa-onnx#3727 · 2 comments · Opened Jul 7, 2026

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• [FEATURE] Windows Nuget Package should be build with direct-ml and cuda enabled

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  Difficulty 4/5 3-5 days Newbie friendliness 30/100

  k2-fsa/sherpa-onnx#3717 · 3 comments · Opened Jul 2, 2026

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• [FEATURE] Adding persian nemo ASR models

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  Difficulty 4/5 3-5 days Newbie friendliness 38/100

  k2-fsa/sherpa-onnx#3714 · 12 comments · Opened Jul 1, 2026

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• What are the benefits of upgrading to the new version of native lib jar: sherpa onnx native lib linux-x64-v1.13.3. jar, such as whether it will increase inference performance?

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  Difficulty 5/5 Over a week Newbie friendliness 10/100

  k2-fsa/sherpa-onnx#3712 · Opened Jun 30, 2026

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• Train Zipformer with 7wh english and chinese corpus, loss diverged

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  Difficulty 4/5 3-5 days Newbie friendliness 10/100

  k2-fsa/icefall#2094 · 1 reaction · Opened Jun 29, 2026

• [FEATURE] Word-Level Timestamps in TTS Output

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  Difficulty 5/5 Over a week Newbie friendliness 25/100

  k2-fsa/sherpa-onnx#3705 · 1 comment · Opened Jun 26, 2026

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• [FEATURE] Add hush main speaker enhancement for Voice AI

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  Difficulty 5/5 Over a week Newbie friendliness 12/100

  k2-fsa/sherpa-onnx#3700 · Opened Jun 24, 2026

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• issue in librispeech recipe, Transducer+Ctc model (streaming)

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  Difficulty 4/5 3-5 days Newbie friendliness 20/100

  k2-fsa/icefall#2092 · Opened Jun 23, 2026