{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2022:E37POBNI5CCZGHIUJFGII6BFAY","short_pith_number":"pith:E37POBNI","canonical_record":{"source":{"id":"2209.11905","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.SD","submitted_at":"2022-09-24T02:33:40Z","cross_cats_sorted":["cs.AI","cs.CL","cs.LG","eess.AS"],"title_canon_sha256":"c0788557c063e27b893b90d981e39f0cea83353b94c3bf598c4b620dbfdcdc80","abstract_canon_sha256":"e09c974465cd7921e42cf213f03c465885e4375b1f36cf9d7e91b3f4b63a30c0"},"schema_version":"1.0"},"canonical_sha256":"26fef705a8e885931d14494c8478250612bd6bc5f48d0ddfaa5e23aca2389372","source":{"kind":"arxiv","id":"2209.11905","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2209.11905","created_at":"2026-07-05T05:00:29Z"},{"alias_kind":"arxiv_version","alias_value":"2209.11905v1","created_at":"2026-07-05T05:00:29Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2209.11905","created_at":"2026-07-05T05:00:29Z"},{"alias_kind":"pith_short_12","alias_value":"E37POBNI5CCZ","created_at":"2026-07-05T05:00:29Z"},{"alias_kind":"pith_short_16","alias_value":"E37POBNI5CCZGHIU","created_at":"2026-07-05T05:00:29Z"},{"alias_kind":"pith_short_8","alias_value":"E37POBNI","created_at":"2026-07-05T05:00:29Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2022:E37POBNI5CCZGHIUJFGII6BFAY","target":"record","payload":{"canonical_record":{"source":{"id":"2209.11905","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.SD","submitted_at":"2022-09-24T02:33:40Z","cross_cats_sorted":["cs.AI","cs.CL","cs.LG","eess.AS"],"title_canon_sha256":"c0788557c063e27b893b90d981e39f0cea83353b94c3bf598c4b620dbfdcdc80","abstract_canon_sha256":"e09c974465cd7921e42cf213f03c465885e4375b1f36cf9d7e91b3f4b63a30c0"},"schema_version":"1.0"},"canonical_sha256":"26fef705a8e885931d14494c8478250612bd6bc5f48d0ddfaa5e23aca2389372","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T05:00:29.478118Z","signature_b64":"v6P5w4HTslFzhHJrxkht9+fOIQ1DIff0n6Xy1CCN2e/t7BVbLaKnXGAg+cEVRv8YteJeKEqUHzbaHozsaA08DQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"26fef705a8e885931d14494c8478250612bd6bc5f48d0ddfaa5e23aca2389372","last_reissued_at":"2026-07-05T05:00:29.477706Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T05:00:29.477706Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2209.11905","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":"2026-07-05T05:00:29Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"DOojEPfRTefOMC8qD0eB1Am2J+V5Mm0eJazXwsFmK/VzeVGkmycAf2DqHmaN54xdDGlRVczHRMeiy1EVO+9gDg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-18T11:00:29.874421Z"},"content_sha256":"daeda1eefdcbf0c89bd34128cf29dc925826c2c3c69622353a3e764e219d1bd4","schema_version":"1.0","event_id":"sha256:daeda1eefdcbf0c89bd34128cf29dc925826c2c3c69622353a3e764e219d1bd4"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2022:E37POBNI5CCZGHIUJFGII6BFAY","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Speech Enhancement with Perceptually-motivated Optimization and Dual Transformations","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cs.AI","cs.CL","cs.LG","eess.AS"],"primary_cat":"cs.SD","authors_text":"Huan Zhou, Kai Liu, Xucheng Wan, Ziqing Du","submitted_at":"2022-09-24T02:33:40Z","abstract_excerpt":"To address the monaural speech enhancement problem, numerous research studies have been conducted to enhance speech via operations either in time-domain on the inner-domain learned from the speech mixture or in time--frequency domain on the fixed full-band short time Fourier transform (STFT) spectrograms. Very recently, a few studies on sub-band based speech enhancement have been proposed. By enhancing speech via operations on sub-band spectrograms, those studies demonstrated competitive performances on the benchmark dataset of DNS2020. Despite attractive, this new research direction has not b"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2209.11905","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/2209.11905/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":"2026-07-05T05:00:29Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"2A8NKxA923M0q5f/AMTDHwKOxWQDIcAi8EjGpSKCM8ZCjDRnN6/Hq+eeF0PclhAQjClu244MoW/MM8ZC9ls7DQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-18T11:00:29.874916Z"},"content_sha256":"97b82bc95930cdf337785d93549d1e8c40836b7b25c60143270fdb18c2e6c81d","schema_version":"1.0","event_id":"sha256:97b82bc95930cdf337785d93549d1e8c40836b7b25c60143270fdb18c2e6c81d"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/E37POBNI5CCZGHIUJFGII6BFAY/bundle.json","state_url":"https://pith.science/pith/E37POBNI5CCZGHIUJFGII6BFAY/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/E37POBNI5CCZGHIUJFGII6BFAY/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":"2026-08-18T11:00:29Z","links":{"resolver":"https://pith.science/pith/E37POBNI5CCZGHIUJFGII6BFAY","bundle":"https://pith.science/pith/E37POBNI5CCZGHIUJFGII6BFAY/bundle.json","state":"https://pith.science/pith/E37POBNI5CCZGHIUJFGII6BFAY/state.json","well_known_bundle":"https://pith.science/.well-known/pith/E37POBNI5CCZGHIUJFGII6BFAY/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2022:E37POBNI5CCZGHIUJFGII6BFAY","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":"e09c974465cd7921e42cf213f03c465885e4375b1f36cf9d7e91b3f4b63a30c0","cross_cats_sorted":["cs.AI","cs.CL","cs.LG","eess.AS"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.SD","submitted_at":"2022-09-24T02:33:40Z","title_canon_sha256":"c0788557c063e27b893b90d981e39f0cea83353b94c3bf598c4b620dbfdcdc80"},"schema_version":"1.0","source":{"id":"2209.11905","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2209.11905","created_at":"2026-07-05T05:00:29Z"},{"alias_kind":"arxiv_version","alias_value":"2209.11905v1","created_at":"2026-07-05T05:00:29Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2209.11905","created_at":"2026-07-05T05:00:29Z"},{"alias_kind":"pith_short_12","alias_value":"E37POBNI5CCZ","created_at":"2026-07-05T05:00:29Z"},{"alias_kind":"pith_short_16","alias_value":"E37POBNI5CCZGHIU","created_at":"2026-07-05T05:00:29Z"},{"alias_kind":"pith_short_8","alias_value":"E37POBNI","created_at":"2026-07-05T05:00:29Z"}],"graph_snapshots":[{"event_id":"sha256:97b82bc95930cdf337785d93549d1e8c40836b7b25c60143270fdb18c2e6c81d","target":"graph","created_at":"2026-07-05T05:00:29Z","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/2209.11905/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"To address the monaural speech enhancement problem, numerous research studies have been conducted to enhance speech via operations either in time-domain on the inner-domain learned from the speech mixture or in time--frequency domain on the fixed full-band short time Fourier transform (STFT) spectrograms. Very recently, a few studies on sub-band based speech enhancement have been proposed. By enhancing speech via operations on sub-band spectrograms, those studies demonstrated competitive performances on the benchmark dataset of DNS2020. Despite attractive, this new research direction has not b","authors_text":"Huan Zhou, Kai Liu, Xucheng Wan, Ziqing Du","cross_cats":["cs.AI","cs.CL","cs.LG","eess.AS"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.SD","submitted_at":"2022-09-24T02:33:40Z","title":"Speech Enhancement with Perceptually-motivated Optimization and Dual Transformations"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2209.11905","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:daeda1eefdcbf0c89bd34128cf29dc925826c2c3c69622353a3e764e219d1bd4","target":"record","created_at":"2026-07-05T05:00:29Z","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":"e09c974465cd7921e42cf213f03c465885e4375b1f36cf9d7e91b3f4b63a30c0","cross_cats_sorted":["cs.AI","cs.CL","cs.LG","eess.AS"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.SD","submitted_at":"2022-09-24T02:33:40Z","title_canon_sha256":"c0788557c063e27b893b90d981e39f0cea83353b94c3bf598c4b620dbfdcdc80"},"schema_version":"1.0","source":{"id":"2209.11905","kind":"arxiv","version":1}},"canonical_sha256":"26fef705a8e885931d14494c8478250612bd6bc5f48d0ddfaa5e23aca2389372","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"26fef705a8e885931d14494c8478250612bd6bc5f48d0ddfaa5e23aca2389372","first_computed_at":"2026-07-05T05:00:29.477706Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T05:00:29.477706Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"v6P5w4HTslFzhHJrxkht9+fOIQ1DIff0n6Xy1CCN2e/t7BVbLaKnXGAg+cEVRv8YteJeKEqUHzbaHozsaA08DQ==","signature_status":"signed_v1","signed_at":"2026-07-05T05:00:29.478118Z","signed_message":"canonical_sha256_bytes"},"source_id":"2209.11905","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:daeda1eefdcbf0c89bd34128cf29dc925826c2c3c69622353a3e764e219d1bd4","sha256:97b82bc95930cdf337785d93549d1e8c40836b7b25c60143270fdb18c2e6c81d"],"state_sha256":"760f03b88b0a6be661f7ddc1439956208624693817984cde559422335176279f"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"ISI0elTqjj0qRWKSd/qdvEUxl0uhaHLZcF9pUN7IQd+JUH1/efJcEKQ3eSxxDEz+cmASGHcn3cZwI6vsz/LGDw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-18T11:00:29.878846Z","bundle_sha256":"283d6da98b3ff3ed4cd45671f3a124b65048b142a2b483db52ba12331f58672e"}}