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.gitattributes

@@ -33,3 +33,5 @@ saved_model/**/* filter=lfs diff=lfs merge=lfs -text
 *.zip filter=lfs diff=lfs merge=lfs -text
 *.zst filter=lfs diff=lfs merge=lfs -text
 *tfevents* filter=lfs diff=lfs merge=lfs -text
+basic-pitch-f16.gguf filter=lfs diff=lfs merge=lfs -text
+basic-pitch-f32.gguf filter=lfs diff=lfs merge=lfs -text

README.md

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+---
+license: apache-2.0
+base_model:
+- spotify/basic-pitch
+pipeline_tag: audio-classification
+tags:
+- music-transcription
+- note-events
+- basic-pitch
+- amt
+- gguf
+- crispasr
+library_name: ggml
+---
+
+# Basic Pitch — GGUF (ggml)
+
+GGUF / ggml conversion of [Spotify Basic Pitch](https://github.com/spotify/basic-pitch) (ICASSP 2022 `nmp` model, Apache-2.0) for **[CrispStrobe/CrispASR](https://github.com/CrispStrobe/CrispASR)** (§250): lightweight polyphonic audio → note-event transcription (any instrument, 88-key MIDI range).
+
+Converted from the `nmp.onnx` that ships inside the basic-pitch repo (sha256 `2c3c1d14…`, 230 KB) with [`models/convert-basic-pitch-to-gguf.py`](https://github.com/CrispStrobe/CrispASR/blob/main/models/convert-basic-pitch-to-gguf.py). The nnAudio CQT2010v2 kernels, the 256-tap decimation FIR, and the rescale vector are copied **bit-for-bit from the ONNX initializers** — nothing DSP-critical is reimplemented.
+
+## Files
+
+| File | Size | Notes |
+|---|---:|---|
+| `basic-pitch-f32.gguf` | 146 KB | exact — note events match the Python reference 27/27 and 11/11 on the validation clips |
+| `basic-pitch-f16.gguf` | 113 KB | default; two note *ends* may shift by one frame (11.6 ms) at threshold boundaries |
+
+## Usage
+
+```bash
+crispasr --piano --backend basic-pitch -m auto --auto-download -f input.wav
+crispasr --piano -m basic-pitch-f32.gguf -f input.wav --piano-format json
+```
+
+Parity vs the upstream ONNX (per-stage cosine ≥ 0.9991 on real audio, 1.000000 on native-rate input; end-to-end note events exact at F32) is enforced by the `crispasr-diff basic-pitch` harness with `tools/reference_backends/basic_pitch.py` as the oracle.

basic-pitch-f16.gguf

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+oid sha256:1bbef6c713af2c78ba0d0126ad4f6095421f20ae3e145f394b2131ff50b54cad
+size 112160

basic-pitch-f32.gguf

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+version https://git-lfs.github.com/spec/v1
+oid sha256:b88612fcbb90daadae97928e748d064fe997fbcf25e34c0fdda58868e3c0f730
+size 145408