Orpheus Telugu Female (QLoRA v1)
A Telugu text-to-speech voice, finetuned from Orpheus. Voice prefix:
telugu_female.
Eval loss 3.1809, matching the male run's 3.1779. Trained on 19,859 clips
(~48 h), of which only 4 were dropped -- the benefit of a corpus with
ground-truth transcripts rather than ASR labels.
Measured median F0 of generated speech: 218.5 Hz, against the male model's
136.9 Hz with no overlap between the two sets. Voice identity was verified by
measurement rather than assumed, because a generic prefix on an earlier Tamil
model silently drifted toward the wrong gender.
See also the matching
male voice
and the
GGUF build.
Model details
| |
|---|
| Base | canopylabs/3b-hi-pretrain-research_release (Orpheus, Llama-3.2-3B backbone) |
| Method | QLoRA (4-bit nf4 base, bf16 compute), r=64 alpha=128, attention + MLP; embeddings frozen |
| Schedule | 2 epochs, lr 2e-4 cosine, batch 1 x grad-accum 16 |
| Hardware | one 16 GB RTX 5060 Ti, trained locally |
| Corpus | SYSPIN Telugu (arpit-tiwari/syspin-telugu-tts) -- studio read speech with ground-truth transcripts |
How it works
Orpheus emits SNAC audio-codec tokens which a SNAC vocoder decodes to 24 kHz
mono PCM. Prompt format is {voice}: {text}; the voice is a literal text
prefix learned at training time, so this model has no zero-shot cloning and
takes no audio input.
Audio token layout: control tokens 128257-128262, audio offset 128266,
7 tokens per frame each offset by (position_in_frame 0-6) * 4096.
Inference
Recommended sampling: temperature=0.3, repetition_penalty=1.3.
Output is quiet (peaks ~0.2-0.4) -- peak-normalise or level it downstream.
Licence and provenance
Derived from the SYSPIN Telugu corpus. The mirror this was trained from does
not declare a licence; anyone intending commercial use should confirm terms
with the upstream corpus holders (IISc SPIRE Lab / Bhashini) rather than
relying on this repo.
