{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2025:C3446NMQUPQLSF5MFWN6GU2CSG","short_pith_number":"pith:C3446NMQ","canonical_record":{"source":{"id":"2509.24457","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"eess.AS","submitted_at":"2025-09-29T08:38:51Z","cross_cats_sorted":["cs.AI","cs.SD","eess.SP"],"title_canon_sha256":"bc83811ee04279347cff3a22b6257cf4f4e374b704c7f9ba0c1d019dcd7e09af","abstract_canon_sha256":"06161ff98848ba15320c7bd287c4e8cb74d20b6763f0145603749ddd75f285c2"},"schema_version":"1.0"},"canonical_sha256":"16f9cf3590a3e0b917ac2d9be3534291ba5e1978484ef60ac44c8966f0fbab64","source":{"kind":"arxiv","id":"2509.24457","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2509.24457","created_at":"2026-08-05T01:33:44Z"},{"alias_kind":"arxiv_version","alias_value":"2509.24457v1","created_at":"2026-08-05T01:33:44Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2509.24457","created_at":"2026-08-05T01:33:44Z"},{"alias_kind":"pith_short_12","alias_value":"C3446NMQUPQL","created_at":"2026-08-05T01:33:44Z"},{"alias_kind":"pith_short_16","alias_value":"C3446NMQUPQLSF5M","created_at":"2026-08-05T01:33:44Z"},{"alias_kind":"pith_short_8","alias_value":"C3446NMQ","created_at":"2026-08-05T01:33:44Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2025:C3446NMQUPQLSF5MFWN6GU2CSG","target":"record","payload":{"canonical_record":{"source":{"id":"2509.24457","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"eess.AS","submitted_at":"2025-09-29T08:38:51Z","cross_cats_sorted":["cs.AI","cs.SD","eess.SP"],"title_canon_sha256":"bc83811ee04279347cff3a22b6257cf4f4e374b704c7f9ba0c1d019dcd7e09af","abstract_canon_sha256":"06161ff98848ba15320c7bd287c4e8cb74d20b6763f0145603749ddd75f285c2"},"schema_version":"1.0"},"canonical_sha256":"16f9cf3590a3e0b917ac2d9be3534291ba5e1978484ef60ac44c8966f0fbab64","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-08-05T01:33:44.356579Z","signature_b64":"O23hMCUDMsqmNY4KOkOwRChSs4ocXwVVz+ufpU5bwlA63+QSV7xcaDZeOIGfBBYbJKCeXS0VwjjbAsoRfVrKCg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"16f9cf3590a3e0b917ac2d9be3534291ba5e1978484ef60ac44c8966f0fbab64","last_reissued_at":"2026-08-05T01:33:44.354958Z","signature_status":"signed_v1","first_computed_at":"2026-08-05T01:33:44.354958Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2509.24457","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":"2026-08-05T01:33:44Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"J2LcoGG79inWIcWx+idhKGLTiy2Fk6WhQ6L5adczxXw+08caj3pFRD/ra2/DToICDMnIjDL0oLUrVkNSl8AQAA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-23T21:13:57.261791Z"},"content_sha256":"492b9120398051ad38772c7239633ff433bcca2de10c2a9b80b718e6f651565a","schema_version":"1.0","event_id":"sha256:492b9120398051ad38772c7239633ff433bcca2de10c2a9b80b718e6f651565a"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2025:C3446NMQUPQLSF5MFWN6GU2CSG","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Assessing speech quality metrics for evaluation of neural audio codecs under clean speech conditions","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":["cs.AI","cs.SD","eess.SP"],"primary_cat":"eess.AS","authors_text":"Alexandra Craciun, Ivana Bali\\'c, Kamil Wojcicki, Laura Lechler, Mansur Yesilbursa, Nezih Topaloglu, Wolfgang Mack","submitted_at":"2025-09-29T08:38:51Z","abstract_excerpt":"Objective speech-quality metrics are widely used to assess codec performance. However, for neural codecs, it is often unclear which metrics provide reliable quality estimates. To address this, we evaluated 45 objective metrics by correlating their scores with subjective listening scores for clean speech across 17 codec conditions. Neural-based metrics such as scoreq and utmos achieved the highest Pearson correlations with subjective scores. Further analysis across different subjective quality ranges revealed that non-intrusive metrics tend to saturate at high subjective quality levels."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2509.24457","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/2509.24457/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":"2026-08-05T01:33:44Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"dt25fOk58lFFpKGUkl0Try46O4c6VGGnJ0TdeE+mTn4TG9+u/sALRhTtzVmIXgWgtjtR7kUOtZMKbl0sFPrXCQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-23T21:13:57.262302Z"},"content_sha256":"000a5458d2d91ecc8c988600bc922654c053efadc5890708a3a70aaaf0625901","schema_version":"1.0","event_id":"sha256:000a5458d2d91ecc8c988600bc922654c053efadc5890708a3a70aaaf0625901"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/C3446NMQUPQLSF5MFWN6GU2CSG/bundle.json","state_url":"https://pith.science/pith/C3446NMQUPQLSF5MFWN6GU2CSG/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/C3446NMQUPQLSF5MFWN6GU2CSG/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":"2026-08-23T21:13:57Z","links":{"resolver":"https://pith.science/pith/C3446NMQUPQLSF5MFWN6GU2CSG","bundle":"https://pith.science/pith/C3446NMQUPQLSF5MFWN6GU2CSG/bundle.json","state":"https://pith.science/pith/C3446NMQUPQLSF5MFWN6GU2CSG/state.json","well_known_bundle":"https://pith.science/.well-known/pith/C3446NMQUPQLSF5MFWN6GU2CSG/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2025:C3446NMQUPQLSF5MFWN6GU2CSG","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":"06161ff98848ba15320c7bd287c4e8cb74d20b6763f0145603749ddd75f285c2","cross_cats_sorted":["cs.AI","cs.SD","eess.SP"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"eess.AS","submitted_at":"2025-09-29T08:38:51Z","title_canon_sha256":"bc83811ee04279347cff3a22b6257cf4f4e374b704c7f9ba0c1d019dcd7e09af"},"schema_version":"1.0","source":{"id":"2509.24457","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2509.24457","created_at":"2026-08-05T01:33:44Z"},{"alias_kind":"arxiv_version","alias_value":"2509.24457v1","created_at":"2026-08-05T01:33:44Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2509.24457","created_at":"2026-08-05T01:33:44Z"},{"alias_kind":"pith_short_12","alias_value":"C3446NMQUPQL","created_at":"2026-08-05T01:33:44Z"},{"alias_kind":"pith_short_16","alias_value":"C3446NMQUPQLSF5M","created_at":"2026-08-05T01:33:44Z"},{"alias_kind":"pith_short_8","alias_value":"C3446NMQ","created_at":"2026-08-05T01:33:44Z"}],"graph_snapshots":[{"event_id":"sha256:000a5458d2d91ecc8c988600bc922654c053efadc5890708a3a70aaaf0625901","target":"graph","created_at":"2026-08-05T01:33:44Z","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/2509.24457/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Objective speech-quality metrics are widely used to assess codec performance. However, for neural codecs, it is often unclear which metrics provide reliable quality estimates. To address this, we evaluated 45 objective metrics by correlating their scores with subjective listening scores for clean speech across 17 codec conditions. Neural-based metrics such as scoreq and utmos achieved the highest Pearson correlations with subjective scores. Further analysis across different subjective quality ranges revealed that non-intrusive metrics tend to saturate at high subjective quality levels.","authors_text":"Alexandra Craciun, Ivana Bali\\'c, Kamil Wojcicki, Laura Lechler, Mansur Yesilbursa, Nezih Topaloglu, Wolfgang Mack","cross_cats":["cs.AI","cs.SD","eess.SP"],"headline":"","license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"eess.AS","submitted_at":"2025-09-29T08:38:51Z","title":"Assessing speech quality metrics for evaluation of neural audio codecs under clean speech conditions"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2509.24457","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":"sha256:492b9120398051ad38772c7239633ff433bcca2de10c2a9b80b718e6f651565a","target":"record","created_at":"2026-08-05T01:33:44Z","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":"06161ff98848ba15320c7bd287c4e8cb74d20b6763f0145603749ddd75f285c2","cross_cats_sorted":["cs.AI","cs.SD","eess.SP"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"eess.AS","submitted_at":"2025-09-29T08:38:51Z","title_canon_sha256":"bc83811ee04279347cff3a22b6257cf4f4e374b704c7f9ba0c1d019dcd7e09af"},"schema_version":"1.0","source":{"id":"2509.24457","kind":"arxiv","version":1}},"canonical_sha256":"16f9cf3590a3e0b917ac2d9be3534291ba5e1978484ef60ac44c8966f0fbab64","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"16f9cf3590a3e0b917ac2d9be3534291ba5e1978484ef60ac44c8966f0fbab64","first_computed_at":"2026-08-05T01:33:44.354958Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-08-05T01:33:44.354958Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"O23hMCUDMsqmNY4KOkOwRChSs4ocXwVVz+ufpU5bwlA63+QSV7xcaDZeOIGfBBYbJKCeXS0VwjjbAsoRfVrKCg==","signature_status":"signed_v1","signed_at":"2026-08-05T01:33:44.356579Z","signed_message":"canonical_sha256_bytes"},"source_id":"2509.24457","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:492b9120398051ad38772c7239633ff433bcca2de10c2a9b80b718e6f651565a","sha256:000a5458d2d91ecc8c988600bc922654c053efadc5890708a3a70aaaf0625901"],"state_sha256":"f45d3ca9d22a8762fa86262678916a397ebe1c8d28dadc99495a074b7304cd5a"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"M+9Ea1wwZ+EtWoDffTXvz+IJXX5kE8BPyspVvQaBbNTjw0c7GozJJBkw1PjDJjo0LJW1gkI11Ljxpq2M3NlCBQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-23T21:13:57.267261Z","bundle_sha256":"6cd0f7a8ab9a5c2c1d59f5d87513319ca80271c51aff753f5aebac30d3c113d3"}}