{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2023:M4LYLDOVSKA4QHIN7SL5JTTOG7","short_pith_number":"pith:M4LYLDOV","canonical_record":{"source":{"id":"2309.16036","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"eess.AS","submitted_at":"2023-09-27T21:28:50Z","cross_cats_sorted":["cs.SD"],"title_canon_sha256":"55828036719c2272befb1f254b1c8ff06c748ef61658f043dc84bab01497c34d","abstract_canon_sha256":"a30c60b378612d0c373960952e924423572a49eb15998454680e91e77a49e0a5"},"schema_version":"1.0"},"canonical_sha256":"6717858dd59281c81d0dfc97d4ce6e37dff5f019aee2cf0c044bee05a3ddacd3","source":{"kind":"arxiv","id":"2309.16036","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2309.16036","created_at":"2026-07-05T07:44:56Z"},{"alias_kind":"arxiv_version","alias_value":"2309.16036v2","created_at":"2026-07-05T07:44:56Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2309.16036","created_at":"2026-07-05T07:44:56Z"},{"alias_kind":"pith_short_12","alias_value":"M4LYLDOVSKA4","created_at":"2026-07-05T07:44:56Z"},{"alias_kind":"pith_short_16","alias_value":"M4LYLDOVSKA4QHIN","created_at":"2026-07-05T07:44:56Z"},{"alias_kind":"pith_short_8","alias_value":"M4LYLDOV","created_at":"2026-07-05T07:44:56Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2023:M4LYLDOVSKA4QHIN7SL5JTTOG7","target":"record","payload":{"canonical_record":{"source":{"id":"2309.16036","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"eess.AS","submitted_at":"2023-09-27T21:28:50Z","cross_cats_sorted":["cs.SD"],"title_canon_sha256":"55828036719c2272befb1f254b1c8ff06c748ef61658f043dc84bab01497c34d","abstract_canon_sha256":"a30c60b378612d0c373960952e924423572a49eb15998454680e91e77a49e0a5"},"schema_version":"1.0"},"canonical_sha256":"6717858dd59281c81d0dfc97d4ce6e37dff5f019aee2cf0c044bee05a3ddacd3","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T07:44:56.542162Z","signature_b64":"1BUhXVeCpBMDiifdubEVO+dRK5KcBhF8y2zECxW+6pWYoqL/Bobffx+tEbs6DOX5/aP1qUvffEcMCTn8kkh5BQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"6717858dd59281c81d0dfc97d4ce6e37dff5f019aee2cf0c044bee05a3ddacd3","last_reissued_at":"2026-07-05T07:44:56.541673Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T07:44:56.541673Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2309.16036","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":"2026-07-05T07:44:56Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Sad243dm8K9dvn9BLs/XRNqEj+Bf1u3PqvQSpJergGrzWpSeXs5NqDnP39q1YrKQvMh2GZz4ParCdAsQcGccBw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-10T19:04:49.040273Z"},"content_sha256":"8ccd9caab5bf1478bd432051cd23c704efea5c9fb5ef8422c47ead5ef21e0400","schema_version":"1.0","event_id":"sha256:8ccd9caab5bf1478bd432051cd23c704efea5c9fb5ef8422c47ead5ef21e0400"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2023:M4LYLDOVSKA4QHIN7SL5JTTOG7","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Multichannel Voice Trigger Detection Based on Transform-average-concatenate","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cs.SD"],"primary_cat":"eess.AS","authors_text":"Avamarie Brueggeman, Masood Delfarah, Stephen Shum, Takuya Higuchi","submitted_at":"2023-09-27T21:28:50Z","abstract_excerpt":"Voice triggering (VT) enables users to activate their devices by just speaking a trigger phrase. A front-end system is typically used to perform speech enhancement and/or separation, and produces multiple enhanced and/or separated signals. Since conventional VT systems take only single-channel audio as input, channel selection is performed. A drawback of this approach is that unselected channels are discarded, even if the discarded channels could contain useful information for VT. In this work, we propose multichannel acoustic models for VT, where the multichannel output from the frond-end is "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2309.16036","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/2309.16036/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":"2026-07-05T07:44:56Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"CEq3NHUt74Cw6YS9qxIr5LyE26hgy037G9Dgheg4vST+/gdIHToTG5Z6VbDUD+isvDiXTooNH2rWrE2tfk1HCQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-10T19:04:49.040859Z"},"content_sha256":"f8428a3828b63940fc58256a2527928ddd1dd58edd23e96c7e8418500faec5c0","schema_version":"1.0","event_id":"sha256:f8428a3828b63940fc58256a2527928ddd1dd58edd23e96c7e8418500faec5c0"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/M4LYLDOVSKA4QHIN7SL5JTTOG7/bundle.json","state_url":"https://pith.science/pith/M4LYLDOVSKA4QHIN7SL5JTTOG7/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/M4LYLDOVSKA4QHIN7SL5JTTOG7/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":"2026-08-10T19:04:49Z","links":{"resolver":"https://pith.science/pith/M4LYLDOVSKA4QHIN7SL5JTTOG7","bundle":"https://pith.science/pith/M4LYLDOVSKA4QHIN7SL5JTTOG7/bundle.json","state":"https://pith.science/pith/M4LYLDOVSKA4QHIN7SL5JTTOG7/state.json","well_known_bundle":"https://pith.science/.well-known/pith/M4LYLDOVSKA4QHIN7SL5JTTOG7/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2023:M4LYLDOVSKA4QHIN7SL5JTTOG7","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":"a30c60b378612d0c373960952e924423572a49eb15998454680e91e77a49e0a5","cross_cats_sorted":["cs.SD"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"eess.AS","submitted_at":"2023-09-27T21:28:50Z","title_canon_sha256":"55828036719c2272befb1f254b1c8ff06c748ef61658f043dc84bab01497c34d"},"schema_version":"1.0","source":{"id":"2309.16036","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2309.16036","created_at":"2026-07-05T07:44:56Z"},{"alias_kind":"arxiv_version","alias_value":"2309.16036v2","created_at":"2026-07-05T07:44:56Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2309.16036","created_at":"2026-07-05T07:44:56Z"},{"alias_kind":"pith_short_12","alias_value":"M4LYLDOVSKA4","created_at":"2026-07-05T07:44:56Z"},{"alias_kind":"pith_short_16","alias_value":"M4LYLDOVSKA4QHIN","created_at":"2026-07-05T07:44:56Z"},{"alias_kind":"pith_short_8","alias_value":"M4LYLDOV","created_at":"2026-07-05T07:44:56Z"}],"graph_snapshots":[{"event_id":"sha256:f8428a3828b63940fc58256a2527928ddd1dd58edd23e96c7e8418500faec5c0","target":"graph","created_at":"2026-07-05T07:44:56Z","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/2309.16036/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Voice triggering (VT) enables users to activate their devices by just speaking a trigger phrase. A front-end system is typically used to perform speech enhancement and/or separation, and produces multiple enhanced and/or separated signals. Since conventional VT systems take only single-channel audio as input, channel selection is performed. A drawback of this approach is that unselected channels are discarded, even if the discarded channels could contain useful information for VT. In this work, we propose multichannel acoustic models for VT, where the multichannel output from the frond-end is ","authors_text":"Avamarie Brueggeman, Masood Delfarah, Stephen Shum, Takuya Higuchi","cross_cats":["cs.SD"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"eess.AS","submitted_at":"2023-09-27T21:28:50Z","title":"Multichannel Voice Trigger Detection Based on Transform-average-concatenate"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2309.16036","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":"sha256:8ccd9caab5bf1478bd432051cd23c704efea5c9fb5ef8422c47ead5ef21e0400","target":"record","created_at":"2026-07-05T07:44:56Z","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":"a30c60b378612d0c373960952e924423572a49eb15998454680e91e77a49e0a5","cross_cats_sorted":["cs.SD"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"eess.AS","submitted_at":"2023-09-27T21:28:50Z","title_canon_sha256":"55828036719c2272befb1f254b1c8ff06c748ef61658f043dc84bab01497c34d"},"schema_version":"1.0","source":{"id":"2309.16036","kind":"arxiv","version":2}},"canonical_sha256":"6717858dd59281c81d0dfc97d4ce6e37dff5f019aee2cf0c044bee05a3ddacd3","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"6717858dd59281c81d0dfc97d4ce6e37dff5f019aee2cf0c044bee05a3ddacd3","first_computed_at":"2026-07-05T07:44:56.541673Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T07:44:56.541673Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"1BUhXVeCpBMDiifdubEVO+dRK5KcBhF8y2zECxW+6pWYoqL/Bobffx+tEbs6DOX5/aP1qUvffEcMCTn8kkh5BQ==","signature_status":"signed_v1","signed_at":"2026-07-05T07:44:56.542162Z","signed_message":"canonical_sha256_bytes"},"source_id":"2309.16036","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:8ccd9caab5bf1478bd432051cd23c704efea5c9fb5ef8422c47ead5ef21e0400","sha256:f8428a3828b63940fc58256a2527928ddd1dd58edd23e96c7e8418500faec5c0"],"state_sha256":"841b4031a5a65c00c28c66f87c593c39e24c4f630bc1346f3b8a5ba72f11314c"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"gaC0V5ifWaoWTxR6AAIYmsNCvVqM3owjoYEoXZHQa7IU7Mzl1YJLfvl3c6v+0qIge/5kXOJ3tZzXpOYi9/KkAQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-10T19:04:49.048262Z","bundle_sha256":"c9339134de68a75552fa2f200625a9bf88e7d206072b5e0850b67651475f5e83"}}