{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2021:TZZ63G6CT5REX4U6LXPCKLQLVM","short_pith_number":"pith:TZZ63G6C","canonical_record":{"source":{"id":"2111.04614","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"eess.AS","submitted_at":"2021-11-08T16:36:34Z","cross_cats_sorted":["cs.LG","cs.SD","eess.SP"],"title_canon_sha256":"025a9906af662b6ee40437e7620655635b38f24d17efbd593d03e670b3e89593","abstract_canon_sha256":"3dbdf0a61552ab99435bb67214f5a35cc366c0558f714cb19d579bc558bf4d4d"},"schema_version":"1.0"},"canonical_sha256":"9e73ed9bc29f624bf29e5dde252e0bab3b9376735069426ed0f35362c31da408","source":{"kind":"arxiv","id":"2111.04614","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2111.04614","created_at":"2026-07-05T03:58:19Z"},{"alias_kind":"arxiv_version","alias_value":"2111.04614v2","created_at":"2026-07-05T03:58:19Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2111.04614","created_at":"2026-07-05T03:58:19Z"},{"alias_kind":"pith_short_12","alias_value":"TZZ63G6CT5RE","created_at":"2026-07-05T03:58:19Z"},{"alias_kind":"pith_short_16","alias_value":"TZZ63G6CT5REX4U6","created_at":"2026-07-05T03:58:19Z"},{"alias_kind":"pith_short_8","alias_value":"TZZ63G6C","created_at":"2026-07-05T03:58:19Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2021:TZZ63G6CT5REX4U6LXPCKLQLVM","target":"record","payload":{"canonical_record":{"source":{"id":"2111.04614","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"eess.AS","submitted_at":"2021-11-08T16:36:34Z","cross_cats_sorted":["cs.LG","cs.SD","eess.SP"],"title_canon_sha256":"025a9906af662b6ee40437e7620655635b38f24d17efbd593d03e670b3e89593","abstract_canon_sha256":"3dbdf0a61552ab99435bb67214f5a35cc366c0558f714cb19d579bc558bf4d4d"},"schema_version":"1.0"},"canonical_sha256":"9e73ed9bc29f624bf29e5dde252e0bab3b9376735069426ed0f35362c31da408","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T03:58:19.215873Z","signature_b64":"rSpZKwXec+Bqh/tg+1VbJCTyCwtb3oHVga5FTuKsrs13VC8HUMg1BCSwVdeWXZJDQd5RAA5Le9tS2itStm7nCQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"9e73ed9bc29f624bf29e5dde252e0bab3b9376735069426ed0f35362c31da408","last_reissued_at":"2026-07-05T03:58:19.215365Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T03:58:19.215365Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2111.04614","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":"2026-07-05T03:58:19Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"QxBYbdFesDEF+15xBOfYSnAM3s3xBg2IPkmThb9UUw4hMhZC5IOwgGVX/2x/hu70HSVzNYrH+gpDGp+j7lLNCA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-23T21:55:14.368502Z"},"content_sha256":"a31299f1d14c628a92b29fda07456abf5364f30af7b44bb7ac0f532ebb7d9573","schema_version":"1.0","event_id":"sha256:a31299f1d14c628a92b29fda07456abf5364f30af7b44bb7ac0f532ebb7d9573"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2021:TZZ63G6CT5REX4U6LXPCKLQLVM","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Learning Filterbanks for End-to-End Acoustic Beamforming","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cs.LG","cs.SD","eess.SP"],"primary_cat":"eess.AS","authors_text":"Fran\\c{c}ois Grondin, Manuel Pariente, Samuele Cornell, Stefano Squartini","submitted_at":"2021-11-08T16:36:34Z","abstract_excerpt":"Recent work on monaural source separation has shown that performance can be increased by using fully learned filterbanks with short windows. On the other hand it is widely known that, for conventional beamforming techniques, performance increases with long analysis windows. This applies also to most hybrid neural beamforming methods which rely on a deep neural network (DNN) to estimate the spatial covariance matrices. In this work we try to bridge the gap between these two worlds and explore fully end-to-end hybrid neural beamforming in which, instead of using the Short-Time-Fourier Transform,"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2111.04614","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/2111.04614/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":"2026-07-05T03:58:19Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"IvG4/E2b+QZSUpeHE9ZJY4KpLwm8XyLWfYvRyud6hmBe0e3oy3FbRNr5aSNcIS5Ey/Zhe6GyfFLlunn+GDIQCQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-23T21:55:14.369101Z"},"content_sha256":"cd3461e9a807ab01f46fc8ad3f7c0908fb015f533542229cc8a1c5c5f19862c2","schema_version":"1.0","event_id":"sha256:cd3461e9a807ab01f46fc8ad3f7c0908fb015f533542229cc8a1c5c5f19862c2"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/TZZ63G6CT5REX4U6LXPCKLQLVM/bundle.json","state_url":"https://pith.science/pith/TZZ63G6CT5REX4U6LXPCKLQLVM/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/TZZ63G6CT5REX4U6LXPCKLQLVM/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":"2026-08-23T21:55:14Z","links":{"resolver":"https://pith.science/pith/TZZ63G6CT5REX4U6LXPCKLQLVM","bundle":"https://pith.science/pith/TZZ63G6CT5REX4U6LXPCKLQLVM/bundle.json","state":"https://pith.science/pith/TZZ63G6CT5REX4U6LXPCKLQLVM/state.json","well_known_bundle":"https://pith.science/.well-known/pith/TZZ63G6CT5REX4U6LXPCKLQLVM/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2021:TZZ63G6CT5REX4U6LXPCKLQLVM","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":"3dbdf0a61552ab99435bb67214f5a35cc366c0558f714cb19d579bc558bf4d4d","cross_cats_sorted":["cs.LG","cs.SD","eess.SP"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"eess.AS","submitted_at":"2021-11-08T16:36:34Z","title_canon_sha256":"025a9906af662b6ee40437e7620655635b38f24d17efbd593d03e670b3e89593"},"schema_version":"1.0","source":{"id":"2111.04614","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2111.04614","created_at":"2026-07-05T03:58:19Z"},{"alias_kind":"arxiv_version","alias_value":"2111.04614v2","created_at":"2026-07-05T03:58:19Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2111.04614","created_at":"2026-07-05T03:58:19Z"},{"alias_kind":"pith_short_12","alias_value":"TZZ63G6CT5RE","created_at":"2026-07-05T03:58:19Z"},{"alias_kind":"pith_short_16","alias_value":"TZZ63G6CT5REX4U6","created_at":"2026-07-05T03:58:19Z"},{"alias_kind":"pith_short_8","alias_value":"TZZ63G6C","created_at":"2026-07-05T03:58:19Z"}],"graph_snapshots":[{"event_id":"sha256:cd3461e9a807ab01f46fc8ad3f7c0908fb015f533542229cc8a1c5c5f19862c2","target":"graph","created_at":"2026-07-05T03:58:19Z","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/2111.04614/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Recent work on monaural source separation has shown that performance can be increased by using fully learned filterbanks with short windows. On the other hand it is widely known that, for conventional beamforming techniques, performance increases with long analysis windows. This applies also to most hybrid neural beamforming methods which rely on a deep neural network (DNN) to estimate the spatial covariance matrices. In this work we try to bridge the gap between these two worlds and explore fully end-to-end hybrid neural beamforming in which, instead of using the Short-Time-Fourier Transform,","authors_text":"Fran\\c{c}ois Grondin, Manuel Pariente, Samuele Cornell, Stefano Squartini","cross_cats":["cs.LG","cs.SD","eess.SP"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"eess.AS","submitted_at":"2021-11-08T16:36:34Z","title":"Learning Filterbanks for End-to-End Acoustic Beamforming"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2111.04614","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:a31299f1d14c628a92b29fda07456abf5364f30af7b44bb7ac0f532ebb7d9573","target":"record","created_at":"2026-07-05T03:58:19Z","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":"3dbdf0a61552ab99435bb67214f5a35cc366c0558f714cb19d579bc558bf4d4d","cross_cats_sorted":["cs.LG","cs.SD","eess.SP"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"eess.AS","submitted_at":"2021-11-08T16:36:34Z","title_canon_sha256":"025a9906af662b6ee40437e7620655635b38f24d17efbd593d03e670b3e89593"},"schema_version":"1.0","source":{"id":"2111.04614","kind":"arxiv","version":2}},"canonical_sha256":"9e73ed9bc29f624bf29e5dde252e0bab3b9376735069426ed0f35362c31da408","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"9e73ed9bc29f624bf29e5dde252e0bab3b9376735069426ed0f35362c31da408","first_computed_at":"2026-07-05T03:58:19.215365Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T03:58:19.215365Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"rSpZKwXec+Bqh/tg+1VbJCTyCwtb3oHVga5FTuKsrs13VC8HUMg1BCSwVdeWXZJDQd5RAA5Le9tS2itStm7nCQ==","signature_status":"signed_v1","signed_at":"2026-07-05T03:58:19.215873Z","signed_message":"canonical_sha256_bytes"},"source_id":"2111.04614","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:a31299f1d14c628a92b29fda07456abf5364f30af7b44bb7ac0f532ebb7d9573","sha256:cd3461e9a807ab01f46fc8ad3f7c0908fb015f533542229cc8a1c5c5f19862c2"],"state_sha256":"ca6231957b3b459073336f8f1ea3d3f9de7cc20a974ca020cf3daa4444ac882e"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"9f94D2+GiI9S5h2r8FpnPefYFKU0Ou838oTiTJGvRIpP6zCDRMNUF67aUmEYbEUGke4YzAm0mPStqbz3PLoaAA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-23T21:55:14.373755Z","bundle_sha256":"f01d3ba4f168f8fc6671ff3ae5de4816469b14297a14bb55d1f67708a0ccecb5"}}