{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2019:SJFEZOH2R3AQHJKWQ4SDSRU7X4","short_pith_number":"pith:SJFEZOH2","canonical_record":{"source":{"id":"1906.08968","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"eess.AS","submitted_at":"2019-06-21T06:19:27Z","cross_cats_sorted":["eess.SP","physics.class-ph"],"title_canon_sha256":"2b4c8b024eaf602aaf4a4e9d801241b497929d67743a962bf453a5daf1aced42","abstract_canon_sha256":"e6384244e77f22ed121f19e3d1651133db1525c8b371b511eedcbc5a0bdd27c6"},"schema_version":"1.0"},"canonical_sha256":"924a4cb8fa8ec103a556872439469fbf11da95eabaf3146e7197070bca69ef28","source":{"kind":"arxiv","id":"1906.08968","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1906.08968","created_at":"2026-05-17T23:42:47Z"},{"alias_kind":"arxiv_version","alias_value":"1906.08968v1","created_at":"2026-05-17T23:42:47Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1906.08968","created_at":"2026-05-17T23:42:47Z"},{"alias_kind":"pith_short_12","alias_value":"SJFEZOH2R3AQ","created_at":"2026-05-18T12:33:27Z"},{"alias_kind":"pith_short_16","alias_value":"SJFEZOH2R3AQHJKW","created_at":"2026-05-18T12:33:27Z"},{"alias_kind":"pith_short_8","alias_value":"SJFEZOH2","created_at":"2026-05-18T12:33:27Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2019:SJFEZOH2R3AQHJKWQ4SDSRU7X4","target":"record","payload":{"canonical_record":{"source":{"id":"1906.08968","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"eess.AS","submitted_at":"2019-06-21T06:19:27Z","cross_cats_sorted":["eess.SP","physics.class-ph"],"title_canon_sha256":"2b4c8b024eaf602aaf4a4e9d801241b497929d67743a962bf453a5daf1aced42","abstract_canon_sha256":"e6384244e77f22ed121f19e3d1651133db1525c8b371b511eedcbc5a0bdd27c6"},"schema_version":"1.0"},"canonical_sha256":"924a4cb8fa8ec103a556872439469fbf11da95eabaf3146e7197070bca69ef28","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-17T23:42:47.219536Z","signature_b64":"XtLd+WAiPKD6QIoWUXFjMcOxqUatG8qKy+/JmxeM5Y75bkTDjZhUt9iv9jicYWU79qgU8Qu7TcsCrHPcM3ezAA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"924a4cb8fa8ec103a556872439469fbf11da95eabaf3146e7197070bca69ef28","last_reissued_at":"2026-05-17T23:42:47.218876Z","signature_status":"signed_v1","first_computed_at":"2026-05-17T23:42:47.218876Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1906.08968","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":"2026-05-17T23:42:47Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"0/c++mBcvdyhYnvCTsEgLZwQyw7Qv4ECB+ZzYHmrk37pf+snEGyYjjwla181cXqWalnm3tdwFAcY9a0+7ntACw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-08T20:07:31.720341Z"},"content_sha256":"8432dd5c2538c14ea4b1b904bcfb8ae2139d050850395b981044b8a8cff5b876","schema_version":"1.0","event_id":"sha256:8432dd5c2538c14ea4b1b904bcfb8ae2139d050850395b981044b8a8cff5b876"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2019:SJFEZOH2R3AQHJKWQ4SDSRU7X4","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Mirage: 2D Source Localization Using Microphone Pair Augmentation with Echoes","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["eess.SP","physics.class-ph"],"primary_cat":"eess.AS","authors_text":"Antoine Deleforge (MULTISPEECH), Diego Di Carlo (PANAMA), Nancy Bertin (PANAMA)","submitted_at":"2019-06-21T06:19:27Z","abstract_excerpt":"It is commonly observed that acoustic echoes hurt performance of sound source localization (SSL) methods. We introduce the concept of microphone array augmentation with echoes (MIRAGE) and show how estimation of early-echo characteristics can in fact benefit SSL. We propose a learning-based scheme for echo estimation combined with a physics-based scheme for echo aggregation. In a simple scenario involving 2 microphones close to a reflective surface and one source, we show using simulated data that the proposed approach performs similarly to a correlation-based method in azimuth estimation whil"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1906.08968","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":"2026-05-17T23:42:47Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"UmixMRyFxajTGG8j52MG8B4OAAOEo3HxwTD6VfoJbyaC77Aj5cP13dccb7NElyh0dA8peJCu+Ai+7IPKOZnAAQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-08T20:07:31.721104Z"},"content_sha256":"6e30b908e45ff9ec17a273f3cd45e09a7f8626cb87c479f408d5f9c8096e9897","schema_version":"1.0","event_id":"sha256:6e30b908e45ff9ec17a273f3cd45e09a7f8626cb87c479f408d5f9c8096e9897"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/SJFEZOH2R3AQHJKWQ4SDSRU7X4/bundle.json","state_url":"https://pith.science/pith/SJFEZOH2R3AQHJKWQ4SDSRU7X4/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/SJFEZOH2R3AQHJKWQ4SDSRU7X4/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":"2026-06-08T20:07:31Z","links":{"resolver":"https://pith.science/pith/SJFEZOH2R3AQHJKWQ4SDSRU7X4","bundle":"https://pith.science/pith/SJFEZOH2R3AQHJKWQ4SDSRU7X4/bundle.json","state":"https://pith.science/pith/SJFEZOH2R3AQHJKWQ4SDSRU7X4/state.json","well_known_bundle":"https://pith.science/.well-known/pith/SJFEZOH2R3AQHJKWQ4SDSRU7X4/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2019:SJFEZOH2R3AQHJKWQ4SDSRU7X4","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":"e6384244e77f22ed121f19e3d1651133db1525c8b371b511eedcbc5a0bdd27c6","cross_cats_sorted":["eess.SP","physics.class-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"eess.AS","submitted_at":"2019-06-21T06:19:27Z","title_canon_sha256":"2b4c8b024eaf602aaf4a4e9d801241b497929d67743a962bf453a5daf1aced42"},"schema_version":"1.0","source":{"id":"1906.08968","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1906.08968","created_at":"2026-05-17T23:42:47Z"},{"alias_kind":"arxiv_version","alias_value":"1906.08968v1","created_at":"2026-05-17T23:42:47Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1906.08968","created_at":"2026-05-17T23:42:47Z"},{"alias_kind":"pith_short_12","alias_value":"SJFEZOH2R3AQ","created_at":"2026-05-18T12:33:27Z"},{"alias_kind":"pith_short_16","alias_value":"SJFEZOH2R3AQHJKW","created_at":"2026-05-18T12:33:27Z"},{"alias_kind":"pith_short_8","alias_value":"SJFEZOH2","created_at":"2026-05-18T12:33:27Z"}],"graph_snapshots":[{"event_id":"sha256:6e30b908e45ff9ec17a273f3cd45e09a7f8626cb87c479f408d5f9c8096e9897","target":"graph","created_at":"2026-05-17T23:42:47Z","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":"It is commonly observed that acoustic echoes hurt performance of sound source localization (SSL) methods. We introduce the concept of microphone array augmentation with echoes (MIRAGE) and show how estimation of early-echo characteristics can in fact benefit SSL. We propose a learning-based scheme for echo estimation combined with a physics-based scheme for echo aggregation. In a simple scenario involving 2 microphones close to a reflective surface and one source, we show using simulated data that the proposed approach performs similarly to a correlation-based method in azimuth estimation whil","authors_text":"Antoine Deleforge (MULTISPEECH), Diego Di Carlo (PANAMA), Nancy Bertin (PANAMA)","cross_cats":["eess.SP","physics.class-ph"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"eess.AS","submitted_at":"2019-06-21T06:19:27Z","title":"Mirage: 2D Source Localization Using Microphone Pair Augmentation with Echoes"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1906.08968","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":"sha256:8432dd5c2538c14ea4b1b904bcfb8ae2139d050850395b981044b8a8cff5b876","target":"record","created_at":"2026-05-17T23:42:47Z","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":"e6384244e77f22ed121f19e3d1651133db1525c8b371b511eedcbc5a0bdd27c6","cross_cats_sorted":["eess.SP","physics.class-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"eess.AS","submitted_at":"2019-06-21T06:19:27Z","title_canon_sha256":"2b4c8b024eaf602aaf4a4e9d801241b497929d67743a962bf453a5daf1aced42"},"schema_version":"1.0","source":{"id":"1906.08968","kind":"arxiv","version":1}},"canonical_sha256":"924a4cb8fa8ec103a556872439469fbf11da95eabaf3146e7197070bca69ef28","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"924a4cb8fa8ec103a556872439469fbf11da95eabaf3146e7197070bca69ef28","first_computed_at":"2026-05-17T23:42:47.218876Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-17T23:42:47.218876Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"XtLd+WAiPKD6QIoWUXFjMcOxqUatG8qKy+/JmxeM5Y75bkTDjZhUt9iv9jicYWU79qgU8Qu7TcsCrHPcM3ezAA==","signature_status":"signed_v1","signed_at":"2026-05-17T23:42:47.219536Z","signed_message":"canonical_sha256_bytes"},"source_id":"1906.08968","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:8432dd5c2538c14ea4b1b904bcfb8ae2139d050850395b981044b8a8cff5b876","sha256:6e30b908e45ff9ec17a273f3cd45e09a7f8626cb87c479f408d5f9c8096e9897"],"state_sha256":"531af880fda586b851f6377b28f3fd29fc645a66d17433037b89aab55a0fdfd8"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"GYE+r6WbvF6727MHY2sqUMqP0Yv+uQ3WpLQRHDvYt61CBvT2xknN7W3RuEbjFMdgMEH7ICfcRjnVyILCNHdUDQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-08T20:07:31.725004Z","bundle_sha256":"353c7981b1bdeb52649a3924d3d5811818bc3f9003b4de5eda1c473808e2ca41"}}