{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2024:SH55XNJG5726MYK3VIWKN4F4R3","short_pith_number":"pith:SH55XNJG","canonical_record":{"source":{"id":"2404.02702","kind":"arxiv","version":3},"metadata":{"license":"http://creativecommons.org/licenses/by-nc-nd/4.0/","primary_cat":"cs.SD","submitted_at":"2024-04-03T13:00:08Z","cross_cats_sorted":["cs.AI"],"title_canon_sha256":"f95cf87dc3addc49455778959417b0816ece63211c6a0026f9f0dd8c9ccdeafc","abstract_canon_sha256":"91eee54f643611300f60d72bff998366c9ca060c10040ffdfc9c4a496da272e7"},"schema_version":"1.0"},"canonical_sha256":"91fbdbb526eff5e6615baa2ca6f0bc8efc4ee2d5a4f2c3f85de4ec76f1743e1c","source":{"kind":"arxiv","id":"2404.02702","version":3},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2404.02702","created_at":"2026-07-05T09:38:25Z"},{"alias_kind":"arxiv_version","alias_value":"2404.02702v3","created_at":"2026-07-05T09:38:25Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2404.02702","created_at":"2026-07-05T09:38:25Z"},{"alias_kind":"pith_short_12","alias_value":"SH55XNJG5726","created_at":"2026-07-05T09:38:25Z"},{"alias_kind":"pith_short_16","alias_value":"SH55XNJG5726MYK3","created_at":"2026-07-05T09:38:25Z"},{"alias_kind":"pith_short_8","alias_value":"SH55XNJG","created_at":"2026-07-05T09:38:25Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2024:SH55XNJG5726MYK3VIWKN4F4R3","target":"record","payload":{"canonical_record":{"source":{"id":"2404.02702","kind":"arxiv","version":3},"metadata":{"license":"http://creativecommons.org/licenses/by-nc-nd/4.0/","primary_cat":"cs.SD","submitted_at":"2024-04-03T13:00:08Z","cross_cats_sorted":["cs.AI"],"title_canon_sha256":"f95cf87dc3addc49455778959417b0816ece63211c6a0026f9f0dd8c9ccdeafc","abstract_canon_sha256":"91eee54f643611300f60d72bff998366c9ca060c10040ffdfc9c4a496da272e7"},"schema_version":"1.0"},"canonical_sha256":"91fbdbb526eff5e6615baa2ca6f0bc8efc4ee2d5a4f2c3f85de4ec76f1743e1c","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T09:38:25.318103Z","signature_b64":"gRlCTbD3Rq21fVGM6wQN8WeD05oNIdu6075vX3T8Qoq045DJjY6dzY6gZqs1aS1tAB7k3L+IqMh46hOfJQj9AQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"91fbdbb526eff5e6615baa2ca6f0bc8efc4ee2d5a4f2c3f85de4ec76f1743e1c","last_reissued_at":"2026-07-05T09:38:25.317644Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T09:38:25.317644Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2404.02702","source_version":3,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-07-05T09:38:25Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"IXSQjI0gP8md55g44+biZhFiYK4QwIDDU7O5+CM/cpgCe9r5FMy9UawE+jhDMRiF81L+WgsDByjOfdxm1Lx0Ag==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-06T11:49:34.871127Z"},"content_sha256":"eb04a535a77f9dad90a83d4a4036402d60812e44267f1482b01a8a4c00a70d5d","schema_version":"1.0","event_id":"sha256:eb04a535a77f9dad90a83d4a4036402d60812e44267f1482b01a8a4c00a70d5d"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2024:SH55XNJG5726MYK3VIWKN4F4R3","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"PSCodec: A Series of High-Fidelity Low-bitrate Neural Speech Codecs Leveraging Prompt Encoders","license":"http://creativecommons.org/licenses/by-nc-nd/4.0/","headline":"","cross_cats":["cs.AI"],"primary_cat":"cs.SD","authors_text":"Hongbin Zhou, Jianhao Ye, Jianjun Zhao, Jixun Yao, Lei Ma, Xiang Zhang, Yanni Hu, Yuguang Yang, Yu Pan","submitted_at":"2024-04-03T13:00:08Z","abstract_excerpt":"Neural speech codecs have recently emerged as a focal point in the fields of speech compression and generation. Despite this progress, achieving high-quality speech reconstruction under low-bitrate scenarios remains a significant challenge. In this paper, we propose PSCodec, a series of neural speech codecs based on prompt encoders, comprising PSCodec-Base, PSCodec-DRL-ICT, and PSCodec-CasAN, which are capable of delivering high-performance speech reconstruction with low bandwidths. Specifically, we first introduce PSCodec-Base, which leverages a pretrained speaker verification model-based pro"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2404.02702","kind":"arxiv","version":3},"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/2404.02702/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":"2026-07-05T09:38:25Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"WP1TGWftDIjAyQQyshdjJuvsYP/3j7dGw2zIhEGPOQy034VpfMMOb9td608X40DoZQRwd4wxab9rpktP6t6hCQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-06T11:49:34.871627Z"},"content_sha256":"d254dab1c4502af19cec64eeb4edda3067c87db04a05b03e44dc2f2b670de163","schema_version":"1.0","event_id":"sha256:d254dab1c4502af19cec64eeb4edda3067c87db04a05b03e44dc2f2b670de163"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/SH55XNJG5726MYK3VIWKN4F4R3/bundle.json","state_url":"https://pith.science/pith/SH55XNJG5726MYK3VIWKN4F4R3/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/SH55XNJG5726MYK3VIWKN4F4R3/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":"2026-08-06T11:49:34Z","links":{"resolver":"https://pith.science/pith/SH55XNJG5726MYK3VIWKN4F4R3","bundle":"https://pith.science/pith/SH55XNJG5726MYK3VIWKN4F4R3/bundle.json","state":"https://pith.science/pith/SH55XNJG5726MYK3VIWKN4F4R3/state.json","well_known_bundle":"https://pith.science/.well-known/pith/SH55XNJG5726MYK3VIWKN4F4R3/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2024:SH55XNJG5726MYK3VIWKN4F4R3","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":"91eee54f643611300f60d72bff998366c9ca060c10040ffdfc9c4a496da272e7","cross_cats_sorted":["cs.AI"],"license":"http://creativecommons.org/licenses/by-nc-nd/4.0/","primary_cat":"cs.SD","submitted_at":"2024-04-03T13:00:08Z","title_canon_sha256":"f95cf87dc3addc49455778959417b0816ece63211c6a0026f9f0dd8c9ccdeafc"},"schema_version":"1.0","source":{"id":"2404.02702","kind":"arxiv","version":3}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2404.02702","created_at":"2026-07-05T09:38:25Z"},{"alias_kind":"arxiv_version","alias_value":"2404.02702v3","created_at":"2026-07-05T09:38:25Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2404.02702","created_at":"2026-07-05T09:38:25Z"},{"alias_kind":"pith_short_12","alias_value":"SH55XNJG5726","created_at":"2026-07-05T09:38:25Z"},{"alias_kind":"pith_short_16","alias_value":"SH55XNJG5726MYK3","created_at":"2026-07-05T09:38:25Z"},{"alias_kind":"pith_short_8","alias_value":"SH55XNJG","created_at":"2026-07-05T09:38:25Z"}],"graph_snapshots":[{"event_id":"sha256:d254dab1c4502af19cec64eeb4edda3067c87db04a05b03e44dc2f2b670de163","target":"graph","created_at":"2026-07-05T09:38:25Z","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/2404.02702/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Neural speech codecs have recently emerged as a focal point in the fields of speech compression and generation. Despite this progress, achieving high-quality speech reconstruction under low-bitrate scenarios remains a significant challenge. In this paper, we propose PSCodec, a series of neural speech codecs based on prompt encoders, comprising PSCodec-Base, PSCodec-DRL-ICT, and PSCodec-CasAN, which are capable of delivering high-performance speech reconstruction with low bandwidths. Specifically, we first introduce PSCodec-Base, which leverages a pretrained speaker verification model-based pro","authors_text":"Hongbin Zhou, Jianhao Ye, Jianjun Zhao, Jixun Yao, Lei Ma, Xiang Zhang, Yanni Hu, Yuguang Yang, Yu Pan","cross_cats":["cs.AI"],"headline":"","license":"http://creativecommons.org/licenses/by-nc-nd/4.0/","primary_cat":"cs.SD","submitted_at":"2024-04-03T13:00:08Z","title":"PSCodec: A Series of High-Fidelity Low-bitrate Neural Speech Codecs Leveraging Prompt Encoders"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2404.02702","kind":"arxiv","version":3},"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:eb04a535a77f9dad90a83d4a4036402d60812e44267f1482b01a8a4c00a70d5d","target":"record","created_at":"2026-07-05T09:38:25Z","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":"91eee54f643611300f60d72bff998366c9ca060c10040ffdfc9c4a496da272e7","cross_cats_sorted":["cs.AI"],"license":"http://creativecommons.org/licenses/by-nc-nd/4.0/","primary_cat":"cs.SD","submitted_at":"2024-04-03T13:00:08Z","title_canon_sha256":"f95cf87dc3addc49455778959417b0816ece63211c6a0026f9f0dd8c9ccdeafc"},"schema_version":"1.0","source":{"id":"2404.02702","kind":"arxiv","version":3}},"canonical_sha256":"91fbdbb526eff5e6615baa2ca6f0bc8efc4ee2d5a4f2c3f85de4ec76f1743e1c","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"91fbdbb526eff5e6615baa2ca6f0bc8efc4ee2d5a4f2c3f85de4ec76f1743e1c","first_computed_at":"2026-07-05T09:38:25.317644Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T09:38:25.317644Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"gRlCTbD3Rq21fVGM6wQN8WeD05oNIdu6075vX3T8Qoq045DJjY6dzY6gZqs1aS1tAB7k3L+IqMh46hOfJQj9AQ==","signature_status":"signed_v1","signed_at":"2026-07-05T09:38:25.318103Z","signed_message":"canonical_sha256_bytes"},"source_id":"2404.02702","source_kind":"arxiv","source_version":3}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:eb04a535a77f9dad90a83d4a4036402d60812e44267f1482b01a8a4c00a70d5d","sha256:d254dab1c4502af19cec64eeb4edda3067c87db04a05b03e44dc2f2b670de163"],"state_sha256":"a8efab65fee64ddc71ad4a0c982e07acce1a4f6f1889af69230e007b72f34bb1"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"8OgZug09AVZy1fHmFORcarvtqe7GnqI53th7Uks2aWqiyFR7IbQDkn3gALWEw96GngW2s2IULteodQCR3iS5DQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-06T11:49:34.876362Z","bundle_sha256":"94bfa95f8de15f71e5c7ce415035bf50e5273d6f93bf77cc5201d99a16acb291"}}