Pith Number

pith:QTLZUK5U

pith:2018:QTLZUK5UUX7VXULCRDO647RQ2R

not attested not anchored not stored refs pending

Modeling of Teager Energy Operated Perceptual Wavelet Packet Coefficients with an Erlang-2 PDF for Real Time Enhancement of Noisy Speech

Celia Shahnaz, Md Tauhidul Islam, M. Omair Ahmad, Wei-Ping Zhu

arxiv:1802.03472 v1 · 2018-02-09 · eess.AS · cs.SD

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{QTLZUK5UUX7VXULCRDO647RQ2R}

Prints a linked badge after your title and injects PDF metadata. Compiles on arXiv. Learn more · Embed verified badge

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.

Receipt and verification

First computed	2026-05-18T00:23:51.499339Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

84d79a2bb4a5ff5bd16288ddee7e30d44afdfd0bd66227d9b79f74938de62a59

Aliases

arxiv: 1802.03472 · arxiv_version: 1802.03472v1 · doi: 10.48550/arxiv.1802.03472 · pith_short_12: QTLZUK5UUX7V · pith_short_16: QTLZUK5UUX7VXULC · pith_short_8: QTLZUK5U

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/QTLZUK5UUX7VXULCRDO647RQ2R \
  | 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: 84d79a2bb4a5ff5bd16288ddee7e30d44afdfd0bd66227d9b79f74938de62a59

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "59529ba6393c583ee647711f5e0c00761e1b83bf13ec6c73ea5eb1d504a37523",
    "cross_cats_sorted": [
      "cs.SD"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "eess.AS",
    "submitted_at": "2018-02-09T22:46:15Z",
    "title_canon_sha256": "2c1e51c873fb79730533ed3980a405d4b79952bdc94839003a84dfd5873b2277"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1802.03472",
    "kind": "arxiv",
    "version": 1
  }
}