{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2026:DCH7B4YDGOTE2K6PR5HWPB4PGW","short_pith_number":"pith:DCH7B4YD","canonical_record":{"source":{"id":"2606.05892","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"eess.AS","submitted_at":"2026-06-04T09:00:13Z","cross_cats_sorted":[],"title_canon_sha256":"11733b89c5b2e0bb56c48d25422fbee037b564d877ba1aa77bc9d796aeb1f817","abstract_canon_sha256":"b34ec41e568d911a0890c1ce20d62ea5baf2ca14d593a7efcf1cc283fd61fef5"},"schema_version":"1.0"},"canonical_sha256":"188ff0f30333a64d2bcf8f4f67878f35a8786042ddb1b07ca36bef462d88de42","source":{"kind":"arxiv","id":"2606.05892","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2606.05892","created_at":"2026-06-05T01:15:07Z"},{"alias_kind":"arxiv_version","alias_value":"2606.05892v1","created_at":"2026-06-05T01:15:07Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2606.05892","created_at":"2026-06-05T01:15:07Z"},{"alias_kind":"pith_short_12","alias_value":"DCH7B4YDGOTE","created_at":"2026-06-05T01:15:07Z"},{"alias_kind":"pith_short_16","alias_value":"DCH7B4YDGOTE2K6P","created_at":"2026-06-05T01:15:07Z"},{"alias_kind":"pith_short_8","alias_value":"DCH7B4YD","created_at":"2026-06-05T01:15:07Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2026:DCH7B4YDGOTE2K6PR5HWPB4PGW","target":"record","payload":{"canonical_record":{"source":{"id":"2606.05892","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"eess.AS","submitted_at":"2026-06-04T09:00:13Z","cross_cats_sorted":[],"title_canon_sha256":"11733b89c5b2e0bb56c48d25422fbee037b564d877ba1aa77bc9d796aeb1f817","abstract_canon_sha256":"b34ec41e568d911a0890c1ce20d62ea5baf2ca14d593a7efcf1cc283fd61fef5"},"schema_version":"1.0"},"canonical_sha256":"188ff0f30333a64d2bcf8f4f67878f35a8786042ddb1b07ca36bef462d88de42","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-06-05T01:15:07.071264Z","signature_b64":"PT18RhAy42h+7JU42e3qm9DCRw99zq4sQrXM5qU1/q975NaEgmeij53yS6zIFd7GyBvEpv3SP7OXRIznH9shAA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"188ff0f30333a64d2bcf8f4f67878f35a8786042ddb1b07ca36bef462d88de42","last_reissued_at":"2026-06-05T01:15:07.070853Z","signature_status":"signed_v1","first_computed_at":"2026-06-05T01:15:07.070853Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2606.05892","source_version":1,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-06-05T01:15:07Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"qSlopMmetHKwog4NTe/lUC0NPDKA18JEUI0/dL0XopX6JqPR3enhdA8u5DcNuv10Ye+uWlqQVJ1JEI+kdpITAQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-30T06:12:15.188669Z"},"content_sha256":"facc3848982f11ab00a994fbdb695cab98a62b30a739ce653495135f1d006bb1","schema_version":"1.0","event_id":"sha256:facc3848982f11ab00a994fbdb695cab98a62b30a739ce653495135f1d006bb1"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2026:DCH7B4YDGOTE2K6PR5HWPB4PGW","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"VoCodec: A Low-bitrate Streamable Neural Speech Codec with Voicing-driven Quantization","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"eess.AS","authors_text":"Ji Wu, Li-Rong Dai, Rui-Chen Zheng, Xiao-Hang Jiang, Yang Ai, Zhen-Hua Ling","submitted_at":"2026-06-04T09:00:13Z","abstract_excerpt":"Neural speech codecs are key to speech transmission and storage, but most use uniform quantization across frames, allocating the same bitrate regardless of content and wasting bits. We propose VoCodec, a low-bitrate streamable neural speech codec with voicing-driven quantization that assigns higher bitrate to voiced frames and lower bitrate to unvoiced frames according to perceptual sensitivity. VoCodec embeds a voicing detector in a fully causal encoder-quantizer-decoder neural coding framework, using residual scalar-vector quantization for voiced frames and simple scalar quantization for unv"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2606.05892","kind":"arxiv","version":1},"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/2606.05892/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"},"verdict_id":null},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-06-05T01:15:07Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"mSrQKxpAHTh8Y42Tq6/X16gw4RPHt8N1GSz8iDpv+Tyoa8ftxJUQKitD4KpipanRruYhAy2NSfDOGG+0W/0qAA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-30T06:12:15.189086Z"},"content_sha256":"6e6145d6c1be131f4c3f13b3aa697da8348f8ca43421f6dc3bd535bce967a0a7","schema_version":"1.0","event_id":"sha256:6e6145d6c1be131f4c3f13b3aa697da8348f8ca43421f6dc3bd535bce967a0a7"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/DCH7B4YDGOTE2K6PR5HWPB4PGW/bundle.json","state_url":"https://pith.science/pith/DCH7B4YDGOTE2K6PR5HWPB4PGW/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/DCH7B4YDGOTE2K6PR5HWPB4PGW/bundle.json","status":"primary"}],"public_keys":[{"key_id":"pith-v1-2026-05","algorithm":"ed25519","format":"raw","public_key_b64":"stVStoiQhXFxp4s2pdzPNoqVNBMojDU/fJ2db5S3CbM=","public_key_hex":"b2d552b68890857171a78b36a5dccf368a953413288c353f7c9d9d6f94b709b3","fingerprint_sha256_b32_first128bits":"RVFV5Z2OI2J3ZUO7ERDEBCYNKS","fingerprint_sha256_hex":"8d4b5ee74e4693bcd1df2446408b0d54","rotates_at":null,"url":"https://pith.science/pith-signing-key.json","notes":"Pith uses this Ed25519 key to sign canonical record SHA-256 digests. Verify with: ed25519_verify(public_key, message=canonical_sha256_bytes, signature=base64decode(signature_b64))."}],"merge_version":"pith-open-graph-merge-v1","built_at":"2026-06-30T06:12:15Z","links":{"resolver":"https://pith.science/pith/DCH7B4YDGOTE2K6PR5HWPB4PGW","bundle":"https://pith.science/pith/DCH7B4YDGOTE2K6PR5HWPB4PGW/bundle.json","state":"https://pith.science/pith/DCH7B4YDGOTE2K6PR5HWPB4PGW/state.json","well_known_bundle":"https://pith.science/.well-known/pith/DCH7B4YDGOTE2K6PR5HWPB4PGW/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2026:DCH7B4YDGOTE2K6PR5HWPB4PGW","merge_version":"pith-open-graph-merge-v1","event_count":2,"valid_event_count":2,"invalid_event_count":0,"equivocation_count":0,"current":{"canonical_record":{"metadata":{"abstract_canon_sha256":"b34ec41e568d911a0890c1ce20d62ea5baf2ca14d593a7efcf1cc283fd61fef5","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"eess.AS","submitted_at":"2026-06-04T09:00:13Z","title_canon_sha256":"11733b89c5b2e0bb56c48d25422fbee037b564d877ba1aa77bc9d796aeb1f817"},"schema_version":"1.0","source":{"id":"2606.05892","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2606.05892","created_at":"2026-06-05T01:15:07Z"},{"alias_kind":"arxiv_version","alias_value":"2606.05892v1","created_at":"2026-06-05T01:15:07Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2606.05892","created_at":"2026-06-05T01:15:07Z"},{"alias_kind":"pith_short_12","alias_value":"DCH7B4YDGOTE","created_at":"2026-06-05T01:15:07Z"},{"alias_kind":"pith_short_16","alias_value":"DCH7B4YDGOTE2K6P","created_at":"2026-06-05T01:15:07Z"},{"alias_kind":"pith_short_8","alias_value":"DCH7B4YD","created_at":"2026-06-05T01:15:07Z"}],"graph_snapshots":[{"event_id":"sha256:6e6145d6c1be131f4c3f13b3aa697da8348f8ca43421f6dc3bd535bce967a0a7","target":"graph","created_at":"2026-06-05T01:15:07Z","signer":{"key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signer_id":"pith.science","signer_type":"pith_registry"},"payload":{"graph_snapshot":{"author_claims":{"count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","strong_count":0},"builder_version":"pith-number-builder-2026-05-17-v1","claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"integrity":{"available":true,"clean":true,"detectors_run":[],"endpoint":"/pith/2606.05892/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Neural speech codecs are key to speech transmission and storage, but most use uniform quantization across frames, allocating the same bitrate regardless of content and wasting bits. We propose VoCodec, a low-bitrate streamable neural speech codec with voicing-driven quantization that assigns higher bitrate to voiced frames and lower bitrate to unvoiced frames according to perceptual sensitivity. VoCodec embeds a voicing detector in a fully causal encoder-quantizer-decoder neural coding framework, using residual scalar-vector quantization for voiced frames and simple scalar quantization for unv","authors_text":"Ji Wu, Li-Rong Dai, Rui-Chen Zheng, Xiao-Hang Jiang, Yang Ai, Zhen-Hua Ling","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"eess.AS","submitted_at":"2026-06-04T09:00:13Z","title":"VoCodec: A Low-bitrate Streamable Neural Speech Codec with Voicing-driven Quantization"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2606.05892","kind":"arxiv","version":1},"verdict":{"created_at":null,"id":null,"model_set":{},"one_line_summary":"","pipeline_version":null,"pith_extraction_headline":"","strongest_claim":"","weakest_assumption":""}},"verdict_id":null}}],"author_attestations":[],"timestamp_anchors":[],"storage_attestations":[],"citation_signatures":[],"replication_records":[],"corrections":[],"mirror_hints":[],"record_created":{"event_id":"sha256:facc3848982f11ab00a994fbdb695cab98a62b30a739ce653495135f1d006bb1","target":"record","created_at":"2026-06-05T01:15:07Z","signer":{"key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signer_id":"pith.science","signer_type":"pith_registry"},"payload":{"attestation_state":"computed","canonical_record":{"metadata":{"abstract_canon_sha256":"b34ec41e568d911a0890c1ce20d62ea5baf2ca14d593a7efcf1cc283fd61fef5","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"eess.AS","submitted_at":"2026-06-04T09:00:13Z","title_canon_sha256":"11733b89c5b2e0bb56c48d25422fbee037b564d877ba1aa77bc9d796aeb1f817"},"schema_version":"1.0","source":{"id":"2606.05892","kind":"arxiv","version":1}},"canonical_sha256":"188ff0f30333a64d2bcf8f4f67878f35a8786042ddb1b07ca36bef462d88de42","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"188ff0f30333a64d2bcf8f4f67878f35a8786042ddb1b07ca36bef462d88de42","first_computed_at":"2026-06-05T01:15:07.070853Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-06-05T01:15:07.070853Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"PT18RhAy42h+7JU42e3qm9DCRw99zq4sQrXM5qU1/q975NaEgmeij53yS6zIFd7GyBvEpv3SP7OXRIznH9shAA==","signature_status":"signed_v1","signed_at":"2026-06-05T01:15:07.071264Z","signed_message":"canonical_sha256_bytes"},"source_id":"2606.05892","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:facc3848982f11ab00a994fbdb695cab98a62b30a739ce653495135f1d006bb1","sha256:6e6145d6c1be131f4c3f13b3aa697da8348f8ca43421f6dc3bd535bce967a0a7"],"state_sha256":"faee960bec0c5dbf55bdda794846d069d5f3189d23fb2b510a7f8ac890e4d834"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"nkpGs6tKmx+UOBOaKVAACyspJjmW98PZVSi1VFvHyY4O9DGiiD6tJvqZD/BAgrRIuEDwohLgYf2rV+g///r+DQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-30T06:12:15.191049Z","bundle_sha256":"1a59db037b19e5334155044bba2ca3a724c9c9967d28960b92cb270f7509b453"}}