{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2018:FJ7WBPDTVNVZVNM5N5DTZVDVNS","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":"20ede1fc1c0b8f0d41103c81d779f48c845590958d1d8644b0392c45b4b81b9a","cross_cats_sorted":["eess.AS","math.IT"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.IT","submitted_at":"2018-01-30T18:26:49Z","title_canon_sha256":"ee6da4a7eef6c42905147fced4fb4c1967f599e9b2c7138b9e22601763fbd20b"},"schema_version":"1.0","source":{"id":"1801.10128","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1801.10128","created_at":"2026-05-18T00:24:45Z"},{"alias_kind":"arxiv_version","alias_value":"1801.10128v1","created_at":"2026-05-18T00:24:45Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1801.10128","created_at":"2026-05-18T00:24:45Z"},{"alias_kind":"pith_short_12","alias_value":"FJ7WBPDTVNVZ","created_at":"2026-05-18T12:32:22Z"},{"alias_kind":"pith_short_16","alias_value":"FJ7WBPDTVNVZVNM5","created_at":"2026-05-18T12:32:22Z"},{"alias_kind":"pith_short_8","alias_value":"FJ7WBPDT","created_at":"2026-05-18T12:32:22Z"}],"graph_snapshots":[{"event_id":"sha256:8a6535599285e323774957e85ec4bcc1041cf7b14986114145a3a9e868a4fd8a","target":"graph","created_at":"2026-05-18T00:24:45Z","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":"We propose a novel information-theoretic approach for evaluating microphone arrays that relies on the array physics and geometry rather than the underlying beamforming algorithm. The analogy between Multiple-Input-Multiple-Output (MIMO) wireless communication channel and the acoustic channel of microphone arrays is exploited to define information measures of microphone arrays, which provide upper bounds of the information rate of the microphone array system.","authors_text":"Mohamed F. Mansour","cross_cats":["eess.AS","math.IT"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.IT","submitted_at":"2018-01-30T18:26:49Z","title":"Information Measures for Microphone Arrays"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1801.10128","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":"sha256:083c29eed091a9f4ee0f9d9d4f1151cbe7f6d1ddabb48ce4a61842c34771c15b","target":"record","created_at":"2026-05-18T00:24:45Z","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":"20ede1fc1c0b8f0d41103c81d779f48c845590958d1d8644b0392c45b4b81b9a","cross_cats_sorted":["eess.AS","math.IT"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.IT","submitted_at":"2018-01-30T18:26:49Z","title_canon_sha256":"ee6da4a7eef6c42905147fced4fb4c1967f599e9b2c7138b9e22601763fbd20b"},"schema_version":"1.0","source":{"id":"1801.10128","kind":"arxiv","version":1}},"canonical_sha256":"2a7f60bc73ab6b9ab59d6f473cd4756cbc13c894dd0076d6c9a5bb5ca5b6619c","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"2a7f60bc73ab6b9ab59d6f473cd4756cbc13c894dd0076d6c9a5bb5ca5b6619c","first_computed_at":"2026-05-18T00:24:45.814747Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:24:45.814747Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"rhJ0krusUPIOfwWhlMKSGqipNBmSnu7+jnmgJWFWzgFWKSgDrplqBmhDY3QfIKX/E996Yuv95tseXNe2Og0MDQ==","signature_status":"signed_v1","signed_at":"2026-05-18T00:24:45.815450Z","signed_message":"canonical_sha256_bytes"},"source_id":"1801.10128","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:083c29eed091a9f4ee0f9d9d4f1151cbe7f6d1ddabb48ce4a61842c34771c15b","sha256:8a6535599285e323774957e85ec4bcc1041cf7b14986114145a3a9e868a4fd8a"],"state_sha256":"bad0bd84d1bb5f60359b0010a573f2dd07eb90c2b38d6b5e0dd09e46b49304d7"}