Pith Number

pith:ZI73ZZXF

pith:2025:ZI73ZZXFEI2HLXCVFMITQMZM2T

not attested not anchored not stored refs pending

IndexTTS2: A Breakthrough in Emotionally Expressive and Duration-Controlled Auto-Regressive Zero-Shot Text-to-Speech

Jinchao Wang, Jingchen Shu, Siyi Zhou, Wei Deng, Xun Zhou, Yi He, Yiquan Zhou

arxiv:2506.21619 v2 · 2025-06-23 · cs.CL · cs.AI · cs.SD · eess.AS

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Add to your LaTeX paper

\usepackage{pith}
\pithnumber{ZI73ZZXFEI2HLXCVFMITQMZM2T}

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Record completeness

1 Bitcoin timestamp

2 Internet Archive

3 Author claim open · sign in to claim

4 Citations open

5 Replications open

✓ Portable graph bundle live · download bundle · merged state

The bundle contains the canonical record plus signed events. A mirror can host it anywhere and recompute the same current state with the deterministic merge algorithm.

Cited by

31 papers in Pith

FlowTTS-GRPO: Online Reinforcement Learning with Multi-Objective Reward Optimization for Flow-Matching Based Text-to-Speech

An Evaluation Framework for Text-to-Speech Voice Reconstruction

Joycent: Diffusion-based Accent TTS without Accented Phone Prediction

SARA: A Dual-Stream VAE for High-Fidelity Speech Generation via Integrating Semantic and Acoustic Representations

TLDR: Compressing Audio Tokens for Efficient Autoregressive Text-to-Speech

Receipt and verification

First computed	2026-07-05T12:03:49.475486Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

ca3fbce6e5223475dc552b1138332cd4d701ac2878d57bf0c27d5cf9b49c9864

Aliases

arxiv: 2506.21619 · arxiv_version: 2506.21619v2 · doi: 10.48550/arxiv.2506.21619 · pith_short_12: ZI73ZZXFEI2H · pith_short_16: ZI73ZZXFEI2HLXCV · pith_short_8: ZI73ZZXF

Agent API

Resolver JSON Graph JSON Events JSON Schema Signing key

Verify this Pith Number yourself

curl -sH 'Accept: application/ld+json' https://pith.science/pith/ZI73ZZXFEI2HLXCVFMITQMZM2T \
  | jq -c '.canonical_record' \
  | python3 -c "import sys,json,hashlib; b=json.dumps(json.loads(sys.stdin.read()), sort_keys=True, separators=(',',':'), ensure_ascii=False).encode(); print(hashlib.sha256(b).hexdigest())"
# expect: ca3fbce6e5223475dc552b1138332cd4d701ac2878d57bf0c27d5cf9b49c9864

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "5b227c2324be2a3a70bcafdf8bb313f999d37b2cd4b502d2b8bae2ce1bc40464",
    "cross_cats_sorted": [
      "cs.AI",
      "cs.SD",
      "eess.AS"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CL",
    "submitted_at": "2025-06-23T08:33:40Z",
    "title_canon_sha256": "29cbb0e0a92f8a186bd6d22eafc280d7123bada383a0770ba5c52d614144e9ec"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2506.21619",
    "kind": "arxiv",
    "version": 2
  }
}