{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2025:WN5R3WANRNYECAPSJ45YUEMSJW","short_pith_number":"pith:WN5R3WAN","schema_version":"1.0","canonical_sha256":"b37b1dd80d8b704101f24f3b8a11924db16ec04feaa0f38ced6fc12f7b30dc02","source":{"kind":"arxiv","id":"2505.06671","version":2},"attestation_state":"computed","paper":{"title":"RADE: A Neural Codec for Transmitting Speech over HF Radio Channels","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cs.SD"],"primary_cat":"eess.AS","authors_text":"David Rowe, Jean-Marc Valin","submitted_at":"2025-05-10T15:16:05Z","abstract_excerpt":"Speech compression is commonly used to send voice over radio channels in applications such as mobile telephony and two-way push-to-talk (PTT) radio. In classical systems, the speech codec is combined with forward error correction, modulation and radio hardware. In this paper we describe an autoencoder that replaces many of the traditional signal processing elements with a neural network. The encoder takes a vocoder feature set (short term spectrum, pitch, voicing), and produces discrete time, but continuously valued quadrature amplitude modulation (QAM) symbols. We use orthogonal frequency dom"},"verification_status":{"content_addressed":true,"pith_receipt":true,"author_attested":false,"weak_author_claims":0,"strong_author_claims":0,"externally_anchored":false,"storage_verified":false,"citation_signatures":0,"replication_records":0,"graph_snapshot":true,"references_resolved":false,"formal_links_present":false},"canonical_record":{"source":{"id":"2505.06671","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"eess.AS","submitted_at":"2025-05-10T15:16:05Z","cross_cats_sorted":["cs.SD"],"title_canon_sha256":"169b9d50281fe37db6089c9556d4d4c2bcdfe19b6c928a7ecd3c45de115703d0","abstract_canon_sha256":"1118ea19a3cc1b53efd6859a1ea9616d244f44dcaf05f5787d88be13f6800b6a"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T11:43:32.212955Z","signature_b64":"VgzBVfzq+P8FGZB1c0/aXysqt/5hJGnnvmlqhYJ1ghCReBeVAOfc/AMsMg+CJHO57rYW8Q7O+a+SYko5gsaeCA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"b37b1dd80d8b704101f24f3b8a11924db16ec04feaa0f38ced6fc12f7b30dc02","last_reissued_at":"2026-07-05T11:43:32.212490Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T11:43:32.212490Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"RADE: A Neural Codec for Transmitting Speech over HF Radio Channels","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cs.SD"],"primary_cat":"eess.AS","authors_text":"David Rowe, Jean-Marc Valin","submitted_at":"2025-05-10T15:16:05Z","abstract_excerpt":"Speech compression is commonly used to send voice over radio channels in applications such as mobile telephony and two-way push-to-talk (PTT) radio. In classical systems, the speech codec is combined with forward error correction, modulation and radio hardware. In this paper we describe an autoencoder that replaces many of the traditional signal processing elements with a neural network. The encoder takes a vocoder feature set (short term spectrum, pitch, voicing), and produces discrete time, but continuously valued quadrature amplitude modulation (QAM) symbols. We use orthogonal frequency dom"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2505.06671","kind":"arxiv","version":2},"verdict":{"id":null,"model_set":{},"created_at":null,"strongest_claim":"","one_line_summary":"","pipeline_version":null,"weakest_assumption":"","pith_extraction_headline":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2505.06671/integrity.json","findings":[],"available":true,"detectors_run":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938"},"references":{"count":0,"sample":[],"resolved_work":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","internal_anchors":0},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"author_claims":{"count":0,"strong_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"builder_version":"pith-number-builder-2026-05-17-v1"},"aliases":[{"alias_kind":"arxiv","alias_value":"2505.06671","created_at":"2026-07-05T11:43:32.212540+00:00"},{"alias_kind":"arxiv_version","alias_value":"2505.06671v2","created_at":"2026-07-05T11:43:32.212540+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2505.06671","created_at":"2026-07-05T11:43:32.212540+00:00"},{"alias_kind":"pith_short_12","alias_value":"WN5R3WANRNYE","created_at":"2026-07-05T11:43:32.212540+00:00"},{"alias_kind":"pith_short_16","alias_value":"WN5R3WANRNYECAPS","created_at":"2026-07-05T11:43:32.212540+00:00"},{"alias_kind":"pith_short_8","alias_value":"WN5R3WAN","created_at":"2026-07-05T11:43:32.212540+00:00"}],"events":[],"event_summary":{},"paper_claims":[],"inbound_citations":{"count":1,"internal_anchor_count":1,"sample":[{"citing_arxiv_id":"2505.06671","citing_title":"RADE: A Neural Codec for Transmitting Speech over HF Radio Channels","ref_index":1,"is_internal_anchor":true}]},"formal_canon":{"evidence_count":0,"sample":[],"anchors":[]},"links":{"html":"https://pith.science/pith/WN5R3WANRNYECAPSJ45YUEMSJW","json":"https://pith.science/pith/WN5R3WANRNYECAPSJ45YUEMSJW.json","graph_json":"https://pith.science/api/pith-number/WN5R3WANRNYECAPSJ45YUEMSJW/graph.json","events_json":"https://pith.science/api/pith-number/WN5R3WANRNYECAPSJ45YUEMSJW/events.json","paper":"https://pith.science/paper/WN5R3WAN"},"agent_actions":{"view_html":"https://pith.science/pith/WN5R3WANRNYECAPSJ45YUEMSJW","download_json":"https://pith.science/pith/WN5R3WANRNYECAPSJ45YUEMSJW.json","view_paper":"https://pith.science/paper/WN5R3WAN","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=2505.06671&json=true","fetch_graph":"https://pith.science/api/pith-number/WN5R3WANRNYECAPSJ45YUEMSJW/graph.json","fetch_events":"https://pith.science/api/pith-number/WN5R3WANRNYECAPSJ45YUEMSJW/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/WN5R3WANRNYECAPSJ45YUEMSJW/action/timestamp_anchor","attest_storage":"https://pith.science/pith/WN5R3WANRNYECAPSJ45YUEMSJW/action/storage_attestation","attest_author":"https://pith.science/pith/WN5R3WANRNYECAPSJ45YUEMSJW/action/author_attestation","sign_citation":"https://pith.science/pith/WN5R3WANRNYECAPSJ45YUEMSJW/action/citation_signature","submit_replication":"https://pith.science/pith/WN5R3WANRNYECAPSJ45YUEMSJW/action/replication_record"}},"created_at":"2026-07-05T11:43:32.212540+00:00","updated_at":"2026-07-05T11:43:32.212540+00:00"}