{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2021:MPAQTJ4VJ6JOSSTCKYOOUCEARZ","short_pith_number":"pith:MPAQTJ4V","canonical_record":{"source":{"id":"2105.14762","kind":"arxiv","version":2},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cs.CL","submitted_at":"2021-05-31T07:48:56Z","cross_cats_sorted":[],"title_canon_sha256":"af8a915ed2abfdbfcd1a74c468aaa7857376229c3f12502cf45a4343c473744a","abstract_canon_sha256":"5ca56aab5252c396796bcecd0fe0280d407672be651153541e237b049f55d9cd"},"schema_version":"1.0"},"canonical_sha256":"63c109a7954f92e94a62561cea08808e4909f805dd54b58ef2bde6b0861c009e","source":{"kind":"arxiv","id":"2105.14762","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2105.14762","created_at":"2026-07-05T03:46:58Z"},{"alias_kind":"arxiv_version","alias_value":"2105.14762v2","created_at":"2026-07-05T03:46:58Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2105.14762","created_at":"2026-07-05T03:46:58Z"},{"alias_kind":"pith_short_12","alias_value":"MPAQTJ4VJ6JO","created_at":"2026-07-05T03:46:58Z"},{"alias_kind":"pith_short_16","alias_value":"MPAQTJ4VJ6JOSSTC","created_at":"2026-07-05T03:46:58Z"},{"alias_kind":"pith_short_8","alias_value":"MPAQTJ4V","created_at":"2026-07-05T03:46:58Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2021:MPAQTJ4VJ6JOSSTCKYOOUCEARZ","target":"record","payload":{"canonical_record":{"source":{"id":"2105.14762","kind":"arxiv","version":2},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cs.CL","submitted_at":"2021-05-31T07:48:56Z","cross_cats_sorted":[],"title_canon_sha256":"af8a915ed2abfdbfcd1a74c468aaa7857376229c3f12502cf45a4343c473744a","abstract_canon_sha256":"5ca56aab5252c396796bcecd0fe0280d407672be651153541e237b049f55d9cd"},"schema_version":"1.0"},"canonical_sha256":"63c109a7954f92e94a62561cea08808e4909f805dd54b58ef2bde6b0861c009e","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T03:46:58.679537Z","signature_b64":"fcWqgxVOeTZiWYWabvvfdRdW9tbKcLtffrcpUss0s6ydY1DJ+mDzQ79Eaemq6wE0fEp8X++4XKnala939zsuAQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"63c109a7954f92e94a62561cea08808e4909f805dd54b58ef2bde6b0861c009e","last_reissued_at":"2026-07-05T03:46:58.679063Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T03:46:58.679063Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2105.14762","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":"2026-07-05T03:46:58Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"hMsxvglyvx9iHbslVvPuOLJ7yP65Dk/JHm6oTJyswJZ+ayqHQvbOZkfSx33Jz4A1zPnpnYGG6Cp/jTc021fcAQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-05T08:54:35.016624Z"},"content_sha256":"9a77a193daf11049eef8630f3a172c8b07209cddd351bc47fed552d06d9f0552","schema_version":"1.0","event_id":"sha256:9a77a193daf11049eef8630f3a172c8b07209cddd351bc47fed552d06d9f0552"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2021:MPAQTJ4VJ6JOSSTCKYOOUCEARZ","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Emotional Voice Conversion: Theory, Databases and ESD","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":[],"primary_cat":"cs.CL","authors_text":"Berrak Sisman, Haizhou Li, Kun Zhou, Rui Liu","submitted_at":"2021-05-31T07:48:56Z","abstract_excerpt":"In this paper, we first provide a review of the state-of-the-art emotional voice conversion research, and the existing emotional speech databases. We then motivate the development of a novel emotional speech database (ESD) that addresses the increasing research need. With this paper, the ESD database is now made available to the research community. The ESD database consists of 350 parallel utterances spoken by 10 native English and 10 native Chinese speakers and covers 5 emotion categories (neutral, happy, angry, sad and surprise). More than 29 hours of speech data were recorded in a controlle"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2105.14762","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/2105.14762/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":"2026-07-05T03:46:58Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"NvAUI8TTr2cKPjXRcw/iYY72wUCKED0K90O6kwAu2HzxxnZE7H/6FLt3BUJ4mMzVGOy3P9XBHvGEAYes+xJXDQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-05T08:54:35.017563Z"},"content_sha256":"e22634c55bb812dd7cfcf8d214ad76d570045931cbe5ffba7e571eb01642808a","schema_version":"1.0","event_id":"sha256:e22634c55bb812dd7cfcf8d214ad76d570045931cbe5ffba7e571eb01642808a"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/MPAQTJ4VJ6JOSSTCKYOOUCEARZ/bundle.json","state_url":"https://pith.science/pith/MPAQTJ4VJ6JOSSTCKYOOUCEARZ/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/MPAQTJ4VJ6JOSSTCKYOOUCEARZ/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":"2026-08-05T08:54:35Z","links":{"resolver":"https://pith.science/pith/MPAQTJ4VJ6JOSSTCKYOOUCEARZ","bundle":"https://pith.science/pith/MPAQTJ4VJ6JOSSTCKYOOUCEARZ/bundle.json","state":"https://pith.science/pith/MPAQTJ4VJ6JOSSTCKYOOUCEARZ/state.json","well_known_bundle":"https://pith.science/.well-known/pith/MPAQTJ4VJ6JOSSTCKYOOUCEARZ/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2021:MPAQTJ4VJ6JOSSTCKYOOUCEARZ","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":"5ca56aab5252c396796bcecd0fe0280d407672be651153541e237b049f55d9cd","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cs.CL","submitted_at":"2021-05-31T07:48:56Z","title_canon_sha256":"af8a915ed2abfdbfcd1a74c468aaa7857376229c3f12502cf45a4343c473744a"},"schema_version":"1.0","source":{"id":"2105.14762","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2105.14762","created_at":"2026-07-05T03:46:58Z"},{"alias_kind":"arxiv_version","alias_value":"2105.14762v2","created_at":"2026-07-05T03:46:58Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2105.14762","created_at":"2026-07-05T03:46:58Z"},{"alias_kind":"pith_short_12","alias_value":"MPAQTJ4VJ6JO","created_at":"2026-07-05T03:46:58Z"},{"alias_kind":"pith_short_16","alias_value":"MPAQTJ4VJ6JOSSTC","created_at":"2026-07-05T03:46:58Z"},{"alias_kind":"pith_short_8","alias_value":"MPAQTJ4V","created_at":"2026-07-05T03:46:58Z"}],"graph_snapshots":[{"event_id":"sha256:e22634c55bb812dd7cfcf8d214ad76d570045931cbe5ffba7e571eb01642808a","target":"graph","created_at":"2026-07-05T03:46:58Z","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/2105.14762/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"In this paper, we first provide a review of the state-of-the-art emotional voice conversion research, and the existing emotional speech databases. We then motivate the development of a novel emotional speech database (ESD) that addresses the increasing research need. With this paper, the ESD database is now made available to the research community. The ESD database consists of 350 parallel utterances spoken by 10 native English and 10 native Chinese speakers and covers 5 emotion categories (neutral, happy, angry, sad and surprise). More than 29 hours of speech data were recorded in a controlle","authors_text":"Berrak Sisman, Haizhou Li, Kun Zhou, Rui Liu","cross_cats":[],"headline":"","license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cs.CL","submitted_at":"2021-05-31T07:48:56Z","title":"Emotional Voice Conversion: Theory, Databases and ESD"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2105.14762","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":"sha256:9a77a193daf11049eef8630f3a172c8b07209cddd351bc47fed552d06d9f0552","target":"record","created_at":"2026-07-05T03:46:58Z","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":"5ca56aab5252c396796bcecd0fe0280d407672be651153541e237b049f55d9cd","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cs.CL","submitted_at":"2021-05-31T07:48:56Z","title_canon_sha256":"af8a915ed2abfdbfcd1a74c468aaa7857376229c3f12502cf45a4343c473744a"},"schema_version":"1.0","source":{"id":"2105.14762","kind":"arxiv","version":2}},"canonical_sha256":"63c109a7954f92e94a62561cea08808e4909f805dd54b58ef2bde6b0861c009e","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"63c109a7954f92e94a62561cea08808e4909f805dd54b58ef2bde6b0861c009e","first_computed_at":"2026-07-05T03:46:58.679063Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T03:46:58.679063Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"fcWqgxVOeTZiWYWabvvfdRdW9tbKcLtffrcpUss0s6ydY1DJ+mDzQ79Eaemq6wE0fEp8X++4XKnala939zsuAQ==","signature_status":"signed_v1","signed_at":"2026-07-05T03:46:58.679537Z","signed_message":"canonical_sha256_bytes"},"source_id":"2105.14762","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:9a77a193daf11049eef8630f3a172c8b07209cddd351bc47fed552d06d9f0552","sha256:e22634c55bb812dd7cfcf8d214ad76d570045931cbe5ffba7e571eb01642808a"],"state_sha256":"78e904671c87d113530dfdf10f65c6a4e510f4c8882df5d3ccc12a4a0bcbab67"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"T5Swj5ml63DQ3rbSDZHVMPSjjmmC2UL1gjt3NqCbOMSclkYzxzovLIGqvQgH7aRsBBR9njw++WxA4qK5F1LkDg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-05T08:54:35.023440Z","bundle_sha256":"01d03c5ff2f8f9419c34003c8c31f57764fda6fdc1be1b9b0a1b86d3bd92b2ee"}}