{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2022:Z7EPL5WY2EC2G2X7XMAV3JHLSG","short_pith_number":"pith:Z7EPL5WY","canonical_record":{"source":{"id":"2204.04579","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.SD","submitted_at":"2022-04-10T02:13:03Z","cross_cats_sorted":["eess.AS"],"title_canon_sha256":"4f83ff0b41db1a747889a9d8217fb8525f302645d8e074bd3bec3e930200a338","abstract_canon_sha256":"ecb8a1a25c7df7ce32a1973f3de1d5acf010f653d1ac47f45cda19c35d332738"},"schema_version":"1.0"},"canonical_sha256":"cfc8f5f6d8d105a36affbb015da4eb91ae4cf8cf5d0597d0a6f911b1c1a2df5e","source":{"kind":"arxiv","id":"2204.04579","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2204.04579","created_at":"2026-07-05T05:24:36Z"},{"alias_kind":"arxiv_version","alias_value":"2204.04579v2","created_at":"2026-07-05T05:24:36Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2204.04579","created_at":"2026-07-05T05:24:36Z"},{"alias_kind":"pith_short_12","alias_value":"Z7EPL5WY2EC2","created_at":"2026-07-05T05:24:36Z"},{"alias_kind":"pith_short_16","alias_value":"Z7EPL5WY2EC2G2X7","created_at":"2026-07-05T05:24:36Z"},{"alias_kind":"pith_short_8","alias_value":"Z7EPL5WY","created_at":"2026-07-05T05:24:36Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2022:Z7EPL5WY2EC2G2X7XMAV3JHLSG","target":"record","payload":{"canonical_record":{"source":{"id":"2204.04579","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.SD","submitted_at":"2022-04-10T02:13:03Z","cross_cats_sorted":["eess.AS"],"title_canon_sha256":"4f83ff0b41db1a747889a9d8217fb8525f302645d8e074bd3bec3e930200a338","abstract_canon_sha256":"ecb8a1a25c7df7ce32a1973f3de1d5acf010f653d1ac47f45cda19c35d332738"},"schema_version":"1.0"},"canonical_sha256":"cfc8f5f6d8d105a36affbb015da4eb91ae4cf8cf5d0597d0a6f911b1c1a2df5e","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T05:24:36.389263Z","signature_b64":"3cgp/Co898uBrF/raMiPcQoS5Smm6xYoqnXNVHuOoqaIxxywB2y0kg5BKkYRczT+cbCPeuVaIgpSTMCOPwJNBQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"cfc8f5f6d8d105a36affbb015da4eb91ae4cf8cf5d0597d0a6f911b1c1a2df5e","last_reissued_at":"2026-07-05T05:24:36.388793Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T05:24:36.388793Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2204.04579","source_version":2,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-07-05T05:24:36Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"x44UGlKPu5w7N2bZuj1+odULRR23BeppoqXlklDVPmDAaGmHcNZDD01SfcsLu68THeK+yKcKPXD6Nszwq9uCBg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-20T14:12:45.895681Z"},"content_sha256":"7f975504f3b2e09b39f3542dd534593925d15f78661a5ab11b2f4414f5f3b0a8","schema_version":"1.0","event_id":"sha256:7f975504f3b2e09b39f3542dd534593925d15f78661a5ab11b2f4414f5f3b0a8"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2022:Z7EPL5WY2EC2G2X7XMAV3JHLSG","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Inferring Pitch from Coarse Spectral Features","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["eess.AS"],"primary_cat":"cs.SD","authors_text":"Danni Ma, Mark Liberman, Neville Ryant","submitted_at":"2022-04-10T02:13:03Z","abstract_excerpt":"Fundamental frequency (F0) has long been treated as the physical definition of \"pitch\" in phonetic analysis. But there have been many demonstrations that F0 is at best an approximation to pitch, both in production and in perception: pitch is not F0, and F0 is not pitch. Changes in the pitch involve many articulatory and acoustic covariates; pitch perception often deviates from what F0 analysis predicts; and in fact, quasi-periodic signals from a single voice source are often incompletely characterized by an attempt to define a single time-varying F0. In this paper, we find strong support for t"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2204.04579","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/2204.04579/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":"2026-07-05T05:24:36Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"jvcW3rhrorFdGjz2qbI0AoG6PABHI+bfDOBPE5Z6wu/fvAdGpzLumLXYVSO94yzDERxD+rwD+RxG5kVXXviVBw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-20T14:12:45.896217Z"},"content_sha256":"6a8a77d32718eff343d25126bdaa70d6a4bd0d437c9c0e0371a4d8fba32c9435","schema_version":"1.0","event_id":"sha256:6a8a77d32718eff343d25126bdaa70d6a4bd0d437c9c0e0371a4d8fba32c9435"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/Z7EPL5WY2EC2G2X7XMAV3JHLSG/bundle.json","state_url":"https://pith.science/pith/Z7EPL5WY2EC2G2X7XMAV3JHLSG/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/Z7EPL5WY2EC2G2X7XMAV3JHLSG/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":"2026-08-20T14:12:45Z","links":{"resolver":"https://pith.science/pith/Z7EPL5WY2EC2G2X7XMAV3JHLSG","bundle":"https://pith.science/pith/Z7EPL5WY2EC2G2X7XMAV3JHLSG/bundle.json","state":"https://pith.science/pith/Z7EPL5WY2EC2G2X7XMAV3JHLSG/state.json","well_known_bundle":"https://pith.science/.well-known/pith/Z7EPL5WY2EC2G2X7XMAV3JHLSG/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2022:Z7EPL5WY2EC2G2X7XMAV3JHLSG","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":"ecb8a1a25c7df7ce32a1973f3de1d5acf010f653d1ac47f45cda19c35d332738","cross_cats_sorted":["eess.AS"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.SD","submitted_at":"2022-04-10T02:13:03Z","title_canon_sha256":"4f83ff0b41db1a747889a9d8217fb8525f302645d8e074bd3bec3e930200a338"},"schema_version":"1.0","source":{"id":"2204.04579","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2204.04579","created_at":"2026-07-05T05:24:36Z"},{"alias_kind":"arxiv_version","alias_value":"2204.04579v2","created_at":"2026-07-05T05:24:36Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2204.04579","created_at":"2026-07-05T05:24:36Z"},{"alias_kind":"pith_short_12","alias_value":"Z7EPL5WY2EC2","created_at":"2026-07-05T05:24:36Z"},{"alias_kind":"pith_short_16","alias_value":"Z7EPL5WY2EC2G2X7","created_at":"2026-07-05T05:24:36Z"},{"alias_kind":"pith_short_8","alias_value":"Z7EPL5WY","created_at":"2026-07-05T05:24:36Z"}],"graph_snapshots":[{"event_id":"sha256:6a8a77d32718eff343d25126bdaa70d6a4bd0d437c9c0e0371a4d8fba32c9435","target":"graph","created_at":"2026-07-05T05:24:36Z","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/2204.04579/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Fundamental frequency (F0) has long been treated as the physical definition of \"pitch\" in phonetic analysis. But there have been many demonstrations that F0 is at best an approximation to pitch, both in production and in perception: pitch is not F0, and F0 is not pitch. Changes in the pitch involve many articulatory and acoustic covariates; pitch perception often deviates from what F0 analysis predicts; and in fact, quasi-periodic signals from a single voice source are often incompletely characterized by an attempt to define a single time-varying F0. In this paper, we find strong support for t","authors_text":"Danni Ma, Mark Liberman, Neville Ryant","cross_cats":["eess.AS"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.SD","submitted_at":"2022-04-10T02:13:03Z","title":"Inferring Pitch from Coarse Spectral Features"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2204.04579","kind":"arxiv","version":2},"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":"sha256:7f975504f3b2e09b39f3542dd534593925d15f78661a5ab11b2f4414f5f3b0a8","target":"record","created_at":"2026-07-05T05:24:36Z","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":"ecb8a1a25c7df7ce32a1973f3de1d5acf010f653d1ac47f45cda19c35d332738","cross_cats_sorted":["eess.AS"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.SD","submitted_at":"2022-04-10T02:13:03Z","title_canon_sha256":"4f83ff0b41db1a747889a9d8217fb8525f302645d8e074bd3bec3e930200a338"},"schema_version":"1.0","source":{"id":"2204.04579","kind":"arxiv","version":2}},"canonical_sha256":"cfc8f5f6d8d105a36affbb015da4eb91ae4cf8cf5d0597d0a6f911b1c1a2df5e","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"cfc8f5f6d8d105a36affbb015da4eb91ae4cf8cf5d0597d0a6f911b1c1a2df5e","first_computed_at":"2026-07-05T05:24:36.388793Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T05:24:36.388793Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"3cgp/Co898uBrF/raMiPcQoS5Smm6xYoqnXNVHuOoqaIxxywB2y0kg5BKkYRczT+cbCPeuVaIgpSTMCOPwJNBQ==","signature_status":"signed_v1","signed_at":"2026-07-05T05:24:36.389263Z","signed_message":"canonical_sha256_bytes"},"source_id":"2204.04579","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:7f975504f3b2e09b39f3542dd534593925d15f78661a5ab11b2f4414f5f3b0a8","sha256:6a8a77d32718eff343d25126bdaa70d6a4bd0d437c9c0e0371a4d8fba32c9435"],"state_sha256":"cbbb4d68804a20b5d83f7d33959f91e06cd173346fb86f1a5c85ad29844c126f"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"2i2u4Oz4wbKu4fz9lsXDp+IFBfFovpeHseVg4zfoYnNE5uDKnWHDbJs6ZopTaaIBxE8ybg0LMf0WdIbVIpFtAg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-20T14:12:45.899679Z","bundle_sha256":"4cfe944b0603c04b879bc725fc85df51683d3086e54dabd640224e6fa4b0bfef"}}