{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2026:VD4N2VXHOQIR42RZSLW5FF5X3E","short_pith_number":"pith:VD4N2VXH","canonical_record":{"source":{"id":"2607.19434","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.SD","submitted_at":"2026-07-21T02:09:58Z","cross_cats_sorted":[],"title_canon_sha256":"b727f60e94ef0774252b467aebd97c64fecadddb0ffcaf772e45cefaf334013a","abstract_canon_sha256":"c58e55a5fc281a35d57ee98d798af785e78228ecd9540b03879fc033a93176ab"},"schema_version":"1.0"},"canonical_sha256":"a8f8dd56e774111e6a3992edd297b7d91e3bb99e9e6d1d63a00684ac322d2098","source":{"kind":"arxiv","id":"2607.19434","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2607.19434","created_at":"2026-07-23T00:23:49Z"},{"alias_kind":"arxiv_version","alias_value":"2607.19434v1","created_at":"2026-07-23T00:23:49Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2607.19434","created_at":"2026-07-23T00:23:49Z"},{"alias_kind":"pith_short_12","alias_value":"VD4N2VXHOQIR","created_at":"2026-07-23T00:23:49Z"},{"alias_kind":"pith_short_16","alias_value":"VD4N2VXHOQIR42RZ","created_at":"2026-07-23T00:23:49Z"},{"alias_kind":"pith_short_8","alias_value":"VD4N2VXH","created_at":"2026-07-23T00:23:49Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2026:VD4N2VXHOQIR42RZSLW5FF5X3E","target":"record","payload":{"canonical_record":{"source":{"id":"2607.19434","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.SD","submitted_at":"2026-07-21T02:09:58Z","cross_cats_sorted":[],"title_canon_sha256":"b727f60e94ef0774252b467aebd97c64fecadddb0ffcaf772e45cefaf334013a","abstract_canon_sha256":"c58e55a5fc281a35d57ee98d798af785e78228ecd9540b03879fc033a93176ab"},"schema_version":"1.0"},"canonical_sha256":"a8f8dd56e774111e6a3992edd297b7d91e3bb99e9e6d1d63a00684ac322d2098","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-23T00:23:49.713200Z","signature_b64":"AwOt4JwmSyGjcumJ+RDD+bbFRTWoLC0O1JpUEGawbr0B+6nQ/NJRlpm1Xbv26QiYKV5XR9nckA7xH0OlcUU0Cw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"a8f8dd56e774111e6a3992edd297b7d91e3bb99e9e6d1d63a00684ac322d2098","last_reissued_at":"2026-07-23T00:23:49.712350Z","signature_status":"signed_v1","first_computed_at":"2026-07-23T00:23:49.712350Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2607.19434","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":"2026-07-23T00:23:49Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"cEGIECXTS0pmZY5HZ9gPMmlSiHMnmPJhikf6/JtypUAltTv6gvgBEBJTS4UV2TcDsNQOoEv5drUm2Ci2RP/kCw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-08T19:41:40.693055Z"},"content_sha256":"a519314e750ed8892c8169787b84040cebe3a1a1888e36fb84a4a4ea3cc0b204","schema_version":"1.0","event_id":"sha256:a519314e750ed8892c8169787b84040cebe3a1a1888e36fb84a4a4ea3cc0b204"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2026:VD4N2VXHOQIR42RZSLW5FF5X3E","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"CAPS: A Cascaded Reconstruction Model to Power Saving in Hearables Using Sub-Nyquist Sampling with Bandwidth Extension","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cs.SD","authors_text":"Anomadarshi Barua, David Vergano, Luke Baja-Ricketts, Sajid Fardin Dipto, Tarikul Islam Tamiti","submitted_at":"2026-07-21T02:09:58Z","abstract_excerpt":"Hearables are wearable computers worn on the ear. Bone conduction microphones are used with air conduction microphones in hearables for multimodal speech enhancement in noisy conditions. Despite this potential, current models largely fail to explore how jointly reducing sampling bit resolution and sampling frequency in analog-to-digital converters (ADCs) of hearables impacts both power usage and audio quality. Furthermore, current frameworks cannot do sub-Nyquist sampling in hearables because they lack a method to reconstruct wideband signals from narrowband components. We therefore propose CA"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2607.19434","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/2607.19434/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":"2026-07-23T00:23:49Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"RRy9VEhMggCzzUhgem+/cv/UgUcvKrYHOop/oYbrlR2bl/hvG9nQfmMqd29nMZ8ztj4vDU9sn81Uwr3CJ2fhBQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-08T19:41:40.693542Z"},"content_sha256":"1ffc0576257f5584c588eb3d77e5b36f8a3b417239eb26390691ca1b97376ea1","schema_version":"1.0","event_id":"sha256:1ffc0576257f5584c588eb3d77e5b36f8a3b417239eb26390691ca1b97376ea1"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/VD4N2VXHOQIR42RZSLW5FF5X3E/bundle.json","state_url":"https://pith.science/pith/VD4N2VXHOQIR42RZSLW5FF5X3E/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/VD4N2VXHOQIR42RZSLW5FF5X3E/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":"2026-08-08T19:41:40Z","links":{"resolver":"https://pith.science/pith/VD4N2VXHOQIR42RZSLW5FF5X3E","bundle":"https://pith.science/pith/VD4N2VXHOQIR42RZSLW5FF5X3E/bundle.json","state":"https://pith.science/pith/VD4N2VXHOQIR42RZSLW5FF5X3E/state.json","well_known_bundle":"https://pith.science/.well-known/pith/VD4N2VXHOQIR42RZSLW5FF5X3E/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2026:VD4N2VXHOQIR42RZSLW5FF5X3E","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":"c58e55a5fc281a35d57ee98d798af785e78228ecd9540b03879fc033a93176ab","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.SD","submitted_at":"2026-07-21T02:09:58Z","title_canon_sha256":"b727f60e94ef0774252b467aebd97c64fecadddb0ffcaf772e45cefaf334013a"},"schema_version":"1.0","source":{"id":"2607.19434","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2607.19434","created_at":"2026-07-23T00:23:49Z"},{"alias_kind":"arxiv_version","alias_value":"2607.19434v1","created_at":"2026-07-23T00:23:49Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2607.19434","created_at":"2026-07-23T00:23:49Z"},{"alias_kind":"pith_short_12","alias_value":"VD4N2VXHOQIR","created_at":"2026-07-23T00:23:49Z"},{"alias_kind":"pith_short_16","alias_value":"VD4N2VXHOQIR42RZ","created_at":"2026-07-23T00:23:49Z"},{"alias_kind":"pith_short_8","alias_value":"VD4N2VXH","created_at":"2026-07-23T00:23:49Z"}],"graph_snapshots":[{"event_id":"sha256:1ffc0576257f5584c588eb3d77e5b36f8a3b417239eb26390691ca1b97376ea1","target":"graph","created_at":"2026-07-23T00:23:49Z","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/2607.19434/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Hearables are wearable computers worn on the ear. Bone conduction microphones are used with air conduction microphones in hearables for multimodal speech enhancement in noisy conditions. Despite this potential, current models largely fail to explore how jointly reducing sampling bit resolution and sampling frequency in analog-to-digital converters (ADCs) of hearables impacts both power usage and audio quality. Furthermore, current frameworks cannot do sub-Nyquist sampling in hearables because they lack a method to reconstruct wideband signals from narrowband components. We therefore propose CA","authors_text":"Anomadarshi Barua, David Vergano, Luke Baja-Ricketts, Sajid Fardin Dipto, Tarikul Islam Tamiti","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.SD","submitted_at":"2026-07-21T02:09:58Z","title":"CAPS: A Cascaded Reconstruction Model to Power Saving in Hearables Using Sub-Nyquist Sampling with Bandwidth Extension"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2607.19434","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:a519314e750ed8892c8169787b84040cebe3a1a1888e36fb84a4a4ea3cc0b204","target":"record","created_at":"2026-07-23T00:23:49Z","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":"c58e55a5fc281a35d57ee98d798af785e78228ecd9540b03879fc033a93176ab","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.SD","submitted_at":"2026-07-21T02:09:58Z","title_canon_sha256":"b727f60e94ef0774252b467aebd97c64fecadddb0ffcaf772e45cefaf334013a"},"schema_version":"1.0","source":{"id":"2607.19434","kind":"arxiv","version":1}},"canonical_sha256":"a8f8dd56e774111e6a3992edd297b7d91e3bb99e9e6d1d63a00684ac322d2098","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"a8f8dd56e774111e6a3992edd297b7d91e3bb99e9e6d1d63a00684ac322d2098","first_computed_at":"2026-07-23T00:23:49.712350Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-23T00:23:49.712350Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"AwOt4JwmSyGjcumJ+RDD+bbFRTWoLC0O1JpUEGawbr0B+6nQ/NJRlpm1Xbv26QiYKV5XR9nckA7xH0OlcUU0Cw==","signature_status":"signed_v1","signed_at":"2026-07-23T00:23:49.713200Z","signed_message":"canonical_sha256_bytes"},"source_id":"2607.19434","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:a519314e750ed8892c8169787b84040cebe3a1a1888e36fb84a4a4ea3cc0b204","sha256:1ffc0576257f5584c588eb3d77e5b36f8a3b417239eb26390691ca1b97376ea1"],"state_sha256":"c6114fdf5e72b72f12df0751f3b074afaa7c801c54e9af572d8766242eda91a1"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"gDNuphzSmLDe634C3wE+7GyJ+6pKcn07gfophmtlGuyhgt1GDEZygSDUhSPfU7U8fXw5J6EnbaWFmK+z94gOBw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-08T19:41:40.698512Z","bundle_sha256":"d0213f47a91a299f2d118d167144cf37cf1b8b300f7ea1d36000a7e405473a87"}}