Quantization/conversion: FP16 conversion reference; no 4-bit palettization
Runtime validation: CoreML CPU
Validation result: 99.85% CTC argmax parity
Size: 219 MB mlpackage
Validation
Runtime parity was checked against PyTorch CTC logits on 16 calibration clips padded to 2005 mel frames. The metric is CTC argmax token agreement versus the PyTorch reference logits, not end-to-end WER.
Usage Boundary
These are fixed-frame acoustic CTC-core exports. They take precomputed log-mel features as processed_signal; they are not full raw-audio-to-text pipelines by themselves.
Notes
Reference CoreML package for Apple runtimes. Input is precomputed log-mel processed_signal.
