{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2017:LKYEGQMOEIUA3P6NXVLPTHXIA3","short_pith_number":"pith:LKYEGQMO","canonical_record":{"source":{"id":"1706.02293","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.SD","submitted_at":"2017-06-07T06:11:32Z","cross_cats_sorted":["cs.LG"],"title_canon_sha256":"a1c541744f4702bbc8ce925c435ef809b4324a60be5a7371cc13e267da5d69ae","abstract_canon_sha256":"ac5ba9dd3f01d6e76807437b5addf0c26b76efb6d9549c907e6c1dd16e3e04e3"},"schema_version":"1.0"},"canonical_sha256":"5ab043418e22280dbfcdbd56f99ee806f7ce55bbc2c3913108637566cd00db1f","source":{"kind":"arxiv","id":"1706.02293","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1706.02293","created_at":"2026-05-18T00:42:45Z"},{"alias_kind":"arxiv_version","alias_value":"1706.02293v1","created_at":"2026-05-18T00:42:45Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1706.02293","created_at":"2026-05-18T00:42:45Z"},{"alias_kind":"pith_short_12","alias_value":"LKYEGQMOEIUA","created_at":"2026-05-18T12:31:28Z"},{"alias_kind":"pith_short_16","alias_value":"LKYEGQMOEIUA3P6N","created_at":"2026-05-18T12:31:28Z"},{"alias_kind":"pith_short_8","alias_value":"LKYEGQMO","created_at":"2026-05-18T12:31:28Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2017:LKYEGQMOEIUA3P6NXVLPTHXIA3","target":"record","payload":{"canonical_record":{"source":{"id":"1706.02293","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.SD","submitted_at":"2017-06-07T06:11:32Z","cross_cats_sorted":["cs.LG"],"title_canon_sha256":"a1c541744f4702bbc8ce925c435ef809b4324a60be5a7371cc13e267da5d69ae","abstract_canon_sha256":"ac5ba9dd3f01d6e76807437b5addf0c26b76efb6d9549c907e6c1dd16e3e04e3"},"schema_version":"1.0"},"canonical_sha256":"5ab043418e22280dbfcdbd56f99ee806f7ce55bbc2c3913108637566cd00db1f","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:42:45.774438Z","signature_b64":"D1dWiV6LeXUOLgHBWOg7/tjwrIXf+rn/e5RL9bWuj1morsIio9g32p25gtEZZakthfzSopMO2AGoEoAUE9NFBQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"5ab043418e22280dbfcdbd56f99ee806f7ce55bbc2c3913108637566cd00db1f","last_reissued_at":"2026-05-18T00:42:45.773732Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:42:45.773732Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1706.02293","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":"2026-05-18T00:42:45Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"TVa3tSn61QiKi2PaaIosXjqa0VVgigH2uxAGU0RAsTIYa6KDcel29EK5hfXOuTGDv80HFgbdDISbLiIjUf1YAQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-26T04:54:10.338906Z"},"content_sha256":"82a60a9b057d87b7b6f721013b1ba4f3ce7f56568e2f79518daf044d8610b132","schema_version":"1.0","event_id":"sha256:82a60a9b057d87b7b6f721013b1ba4f3ce7f56568e2f79518daf044d8610b132"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2017:LKYEGQMOEIUA3P6NXVLPTHXIA3","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Sound Event Detection in Multichannel Audio Using Spatial and Harmonic Features","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cs.LG"],"primary_cat":"cs.SD","authors_text":"Giambattista Parascandolo, Pasi Pertil\\\"a, Sharath Adavanne, Toni Heittola, Tuomas Virtanen","submitted_at":"2017-06-07T06:11:32Z","abstract_excerpt":"In this paper, we propose the use of spatial and harmonic features in combination with long short term memory (LSTM) recurrent neural network (RNN) for automatic sound event detection (SED) task. Real life sound recordings typically have many overlapping sound events, making it hard to recognize with just mono channel audio. Human listeners have been successfully recognizing the mixture of overlapping sound events using pitch cues and exploiting the stereo (multichannel) audio signal available at their ears to spatially localize these events. Traditionally SED systems have only been using mono"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1706.02293","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":""},"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":"2026-05-18T00:42:45Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"iQTY2D0Jsh/ccl4gkP3ynAgVtmm0L30UZvpBczPfFP1GCFtdnPqWqMBG8Csw6toIqlL5asFYHJDTdgXioReJDA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-26T04:54:10.339280Z"},"content_sha256":"4f09b73d16133bcd7cd995a4eaf68fa656b7b73b6122b910f5bc23b16f7d81d5","schema_version":"1.0","event_id":"sha256:4f09b73d16133bcd7cd995a4eaf68fa656b7b73b6122b910f5bc23b16f7d81d5"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/LKYEGQMOEIUA3P6NXVLPTHXIA3/bundle.json","state_url":"https://pith.science/pith/LKYEGQMOEIUA3P6NXVLPTHXIA3/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/LKYEGQMOEIUA3P6NXVLPTHXIA3/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":"2026-05-26T04:54:10Z","links":{"resolver":"https://pith.science/pith/LKYEGQMOEIUA3P6NXVLPTHXIA3","bundle":"https://pith.science/pith/LKYEGQMOEIUA3P6NXVLPTHXIA3/bundle.json","state":"https://pith.science/pith/LKYEGQMOEIUA3P6NXVLPTHXIA3/state.json","well_known_bundle":"https://pith.science/.well-known/pith/LKYEGQMOEIUA3P6NXVLPTHXIA3/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2017:LKYEGQMOEIUA3P6NXVLPTHXIA3","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":"ac5ba9dd3f01d6e76807437b5addf0c26b76efb6d9549c907e6c1dd16e3e04e3","cross_cats_sorted":["cs.LG"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.SD","submitted_at":"2017-06-07T06:11:32Z","title_canon_sha256":"a1c541744f4702bbc8ce925c435ef809b4324a60be5a7371cc13e267da5d69ae"},"schema_version":"1.0","source":{"id":"1706.02293","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1706.02293","created_at":"2026-05-18T00:42:45Z"},{"alias_kind":"arxiv_version","alias_value":"1706.02293v1","created_at":"2026-05-18T00:42:45Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1706.02293","created_at":"2026-05-18T00:42:45Z"},{"alias_kind":"pith_short_12","alias_value":"LKYEGQMOEIUA","created_at":"2026-05-18T12:31:28Z"},{"alias_kind":"pith_short_16","alias_value":"LKYEGQMOEIUA3P6N","created_at":"2026-05-18T12:31:28Z"},{"alias_kind":"pith_short_8","alias_value":"LKYEGQMO","created_at":"2026-05-18T12:31:28Z"}],"graph_snapshots":[{"event_id":"sha256:4f09b73d16133bcd7cd995a4eaf68fa656b7b73b6122b910f5bc23b16f7d81d5","target":"graph","created_at":"2026-05-18T00:42:45Z","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"},"paper":{"abstract_excerpt":"In this paper, we propose the use of spatial and harmonic features in combination with long short term memory (LSTM) recurrent neural network (RNN) for automatic sound event detection (SED) task. Real life sound recordings typically have many overlapping sound events, making it hard to recognize with just mono channel audio. Human listeners have been successfully recognizing the mixture of overlapping sound events using pitch cues and exploiting the stereo (multichannel) audio signal available at their ears to spatially localize these events. Traditionally SED systems have only been using mono","authors_text":"Giambattista Parascandolo, Pasi Pertil\\\"a, Sharath Adavanne, Toni Heittola, Tuomas Virtanen","cross_cats":["cs.LG"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.SD","submitted_at":"2017-06-07T06:11:32Z","title":"Sound Event Detection in Multichannel Audio Using Spatial and Harmonic Features"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1706.02293","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":"sha256:82a60a9b057d87b7b6f721013b1ba4f3ce7f56568e2f79518daf044d8610b132","target":"record","created_at":"2026-05-18T00:42:45Z","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":"ac5ba9dd3f01d6e76807437b5addf0c26b76efb6d9549c907e6c1dd16e3e04e3","cross_cats_sorted":["cs.LG"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.SD","submitted_at":"2017-06-07T06:11:32Z","title_canon_sha256":"a1c541744f4702bbc8ce925c435ef809b4324a60be5a7371cc13e267da5d69ae"},"schema_version":"1.0","source":{"id":"1706.02293","kind":"arxiv","version":1}},"canonical_sha256":"5ab043418e22280dbfcdbd56f99ee806f7ce55bbc2c3913108637566cd00db1f","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"5ab043418e22280dbfcdbd56f99ee806f7ce55bbc2c3913108637566cd00db1f","first_computed_at":"2026-05-18T00:42:45.773732Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:42:45.773732Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"D1dWiV6LeXUOLgHBWOg7/tjwrIXf+rn/e5RL9bWuj1morsIio9g32p25gtEZZakthfzSopMO2AGoEoAUE9NFBQ==","signature_status":"signed_v1","signed_at":"2026-05-18T00:42:45.774438Z","signed_message":"canonical_sha256_bytes"},"source_id":"1706.02293","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:82a60a9b057d87b7b6f721013b1ba4f3ce7f56568e2f79518daf044d8610b132","sha256:4f09b73d16133bcd7cd995a4eaf68fa656b7b73b6122b910f5bc23b16f7d81d5"],"state_sha256":"22483e66870d7184ca6ebbcad959e4cd2588b23cc5cf76334c99968890b4337a"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"wJsnW28swWoOUbkoyKi4c2HpFSHCwHch8OijjEvwjqLmf76neiRo6xWE8z478Ut0jrtnISdNiwwGCo36mBy0BQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-26T04:54:10.341956Z","bundle_sha256":"35cd994a14d71188634c24da1ba97d2321a8e37da3b345f4c30bc11984520f20"}}