{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2014:2CENK5B4HN6I4FJ3SRASFXK5LG","short_pith_number":"pith:2CENK5B4","schema_version":"1.0","canonical_sha256":"d088d5743c3b7c8e153b944122dd5d59a9868f37bf3a432f8f6ee2a4a6ad86da","source":{"kind":"arxiv","id":"1402.3352","version":1},"attestation_state":"computed","paper":{"title":"Improved Design Method for Nearly Linear-Phase IIR Filters Using Constrained Optimization","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cs.SY","authors_text":"A. Antoniou, D. J. Shpak, R. C. Nongpiur","submitted_at":"2014-02-14T03:07:52Z","abstract_excerpt":"A new optimization method for the design of nearly linear-phase IIR digital filters that satisfy prescribed specifications is proposed. The group-delay deviation is minimized under the constraint that the passband ripple and stopband attenuation are within the prescribed specifications and either a prescribed or an optimized group delay can be achieved. By representing the filter in terms of a cascade of second-order sections, a non-restrictive stability constraint characterized by a set of linear inequality constraints can be incorporated in the optimization algorithm. An additional feature o"},"verification_status":{"content_addressed":true,"pith_receipt":true,"author_attested":false,"weak_author_claims":0,"strong_author_claims":0,"externally_anchored":false,"storage_verified":false,"citation_signatures":0,"replication_records":0,"graph_snapshot":true,"references_resolved":false,"formal_links_present":false},"canonical_record":{"source":{"id":"1402.3352","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.SY","submitted_at":"2014-02-14T03:07:52Z","cross_cats_sorted":[],"title_canon_sha256":"c63cc15fc57b8b80c537e063eef62bc3fdd14117f1a6aad59f86b23e014a7a00","abstract_canon_sha256":"984b37fe6789fc7e4c05196678b10f078ca9fa9e837a299c48e2db2c21735deb"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:57:52.224656Z","signature_b64":"watLTTQTkYyf58WlKTD7N9DoZ2RzlPXEFIh8Dt9JnIWNV3jTQVVaEoGzYHSkezLfpyS+AQ3CYsyZLHoAXe65Bw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"d088d5743c3b7c8e153b944122dd5d59a9868f37bf3a432f8f6ee2a4a6ad86da","last_reissued_at":"2026-05-18T00:57:52.223920Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:57:52.223920Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Improved Design Method for Nearly Linear-Phase IIR Filters Using Constrained Optimization","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cs.SY","authors_text":"A. Antoniou, D. J. Shpak, R. C. Nongpiur","submitted_at":"2014-02-14T03:07:52Z","abstract_excerpt":"A new optimization method for the design of nearly linear-phase IIR digital filters that satisfy prescribed specifications is proposed. The group-delay deviation is minimized under the constraint that the passband ripple and stopband attenuation are within the prescribed specifications and either a prescribed or an optimized group delay can be achieved. By representing the filter in terms of a cascade of second-order sections, a non-restrictive stability constraint characterized by a set of linear inequality constraints can be incorporated in the optimization algorithm. An additional feature o"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1402.3352","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"},"aliases":[{"alias_kind":"arxiv","alias_value":"1402.3352","created_at":"2026-05-18T00:57:52.224039+00:00"},{"alias_kind":"arxiv_version","alias_value":"1402.3352v1","created_at":"2026-05-18T00:57:52.224039+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1402.3352","created_at":"2026-05-18T00:57:52.224039+00:00"},{"alias_kind":"pith_short_12","alias_value":"2CENK5B4HN6I","created_at":"2026-05-18T12:28:09.283467+00:00"},{"alias_kind":"pith_short_16","alias_value":"2CENK5B4HN6I4FJ3","created_at":"2026-05-18T12:28:09.283467+00:00"},{"alias_kind":"pith_short_8","alias_value":"2CENK5B4","created_at":"2026-05-18T12:28:09.283467+00:00"}],"events":[],"event_summary":{},"paper_claims":[],"inbound_citations":{"count":0,"internal_anchor_count":0,"sample":[]},"formal_canon":{"evidence_count":0,"sample":[],"anchors":[]},"links":{"html":"https://pith.science/pith/2CENK5B4HN6I4FJ3SRASFXK5LG","json":"https://pith.science/pith/2CENK5B4HN6I4FJ3SRASFXK5LG.json","graph_json":"https://pith.science/api/pith-number/2CENK5B4HN6I4FJ3SRASFXK5LG/graph.json","events_json":"https://pith.science/api/pith-number/2CENK5B4HN6I4FJ3SRASFXK5LG/events.json","paper":"https://pith.science/paper/2CENK5B4"},"agent_actions":{"view_html":"https://pith.science/pith/2CENK5B4HN6I4FJ3SRASFXK5LG","download_json":"https://pith.science/pith/2CENK5B4HN6I4FJ3SRASFXK5LG.json","view_paper":"https://pith.science/paper/2CENK5B4","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1402.3352&json=true","fetch_graph":"https://pith.science/api/pith-number/2CENK5B4HN6I4FJ3SRASFXK5LG/graph.json","fetch_events":"https://pith.science/api/pith-number/2CENK5B4HN6I4FJ3SRASFXK5LG/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/2CENK5B4HN6I4FJ3SRASFXK5LG/action/timestamp_anchor","attest_storage":"https://pith.science/pith/2CENK5B4HN6I4FJ3SRASFXK5LG/action/storage_attestation","attest_author":"https://pith.science/pith/2CENK5B4HN6I4FJ3SRASFXK5LG/action/author_attestation","sign_citation":"https://pith.science/pith/2CENK5B4HN6I4FJ3SRASFXK5LG/action/citation_signature","submit_replication":"https://pith.science/pith/2CENK5B4HN6I4FJ3SRASFXK5LG/action/replication_record"}},"created_at":"2026-05-18T00:57:52.224039+00:00","updated_at":"2026-05-18T00:57:52.224039+00:00"}