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.tflite) graph bundle of SPRINGLab/Indic-Mio
(Qwen3-0.6B speech-token LM, Apache-2.0) with its
Aratako/MioCodec-25Hz-24kHz
codec (MIT), for CPU inference on Windows/Linux x86_64 through
speech-core. Emotion is controlled with
end-of-utterance suffix tags; voice cloning conditions on a 128-dim global
speaker embedding extracted from reference audio.| File | Inputs | Outputs |
|---|---|---|
indicmio-text-prefill.tflite (fp16) | ids[1,64] i64 (right-pad with 151643), last_index scalar i64 | logits[1,164480] f32, k/v[28,1,8,512,128] f32 |
indicmio-token-step.tflite (fp16) | id[1,1], pos[1,1], write_index scalar, k/v in | logits[1,164480], k/v out |
indicmio-audio-decoder.tflite (fp32) | codes[1,384] i64 (zero-pad), global[1,128] f32, valid_tokens scalar i64 | STFT real[1,961,768], imag[1,961,768] f32 |
indicmio-ref-encoder.tflite (fp32) | audio24k[1,240000] f32 (10 s bucket) | global[1,128] f32 |
config.json carries the manifest (token offsets, stop ids, prompt template,
bucket sizes); fidelity.json the parity results; the HF tokenizer files are
included for host-side tokenization.<|im_start|>user\n{text}<|im_end|>\n<|im_start|>assistant\n,
right-padded to 64 tokens with 151643; pass the real last position as
last_index. Emotion tags go at the end of the sentence:
<happy> <sad> <angry> <disgust> <fear> <surprise>.logits (upstream reference: temperature 0.9,
top-p 0.9; suppress EOS until the first speech token), feed the sampled id
back through token-step with pos = write_index = current length. Stop on
151645 or 151643. Speech codes are id - 151669 (12800 codes, 25 Hz,
960 samples/token at 24 kHz).valid_tokens to the real count
(the graph masks attention and normalization statistics so padding cannot
contaminate the result), then reconstruct audio from the spectrum frames:
complex spec = real + i·imag, inverse rFFT per frame (n_fft 1920), Hann
window, overlap-add at hop 480, divide by the (constant, precomputable)
window envelope, trim (win-hop)/2 at both ends and keep
valid_tokens*960 samples, guarding the final ~8 hops of the tail.global. Without a reference, pass zeros.| Check | Result |
|---|---|
| Prefill logits corr | ~1.000000 |
| Token-step logits corr (non-zero write index) | ~1.000000 |
| Decoder PCM corr vs exact-length upstream decode | 0.998 |
| Reference-encoder cosine | 0.999 |
| Hindi ASR roundtrip (keyword recovery, 4 cases) | pass; emotion tags styled, never spoken |