{ "schema": 1, "language": "en", "lang_code": "a", "dialect": "us", "voice": "am_michael", "speed": 1.03, "sample_rate": 24000, "total_duration": 49.08, "media_sha256": "c060b178366ac84a6aa73616f28283fb150b43b33d884d52e96a102deceb3144", "media_bytes": 309433, "render_fingerprint": "c2088b1b0b74dcc022d2ae36460eaf4ee75525cbd2af3b99e67871deddbcdb79", "render_inputs": { "renderer": "render_all_voices-v4", "lesson": "34_database", "language": "en", "lang_code": "a", "dialect": "us", "voice": "am_michael", "speed": 1.03, "scenes": [ { "narration": "Database Browser inspects large spaCR databases in a bounded, read-only view.", "speech_text": [ "Database Browser inspects large spacer databases in a bounded, read-only view." ], "authored_hold": 0.7, "resolved_hold": 0.52, "speed_multiplier": 1.0, "effective_speed": 1.03 }, { "narration": "Choose a measurements database or its run folder and open it.", "speech_text": [ "Choose a measurements database or its run folder and open it." ], "authored_hold": 0.7, "resolved_hold": 0.52, "speed_multiplier": 1.0, "effective_speed": 1.03 }, { "narration": "Select a table after reviewing its purpose and read-only status.", "speech_text": [ "Select a table after reviewing its purpose and read-only status." ], "authored_hold": 0.7, "resolved_hold": 0.52, "speed_multiplier": 1.0, "effective_speed": 1.03 }, { "narration": "The preview loads a bounded page while reporting the complete row and column counts separately.", "speech_text": [ "The preview loads a bounded page while reporting the complete row and column counts separately." ], "authored_hold": 0.7, "resolved_hold": 0.52, "speed_multiplier": 1.0, "effective_speed": 1.03 }, { "narration": "Search columns to make wide feature tables readable without changing the underlying rows.", "speech_text": [ "Search columns to make wide feature tables readable without changing the underlying rows." ], "authored_hold": 0.7, "resolved_hold": 0.52, "speed_multiplier": 1.0, "effective_speed": 1.03 }, { "narration": "Build a structured filter. Column names and operators are validated, and values are bound safely.", "speech_text": [ "Build a structured filter.", "Column names and operators are validated, and values are bound safely." ], "authored_hold": 0.7, "resolved_hold": 0.52, "speed_multiplier": 1.0, "effective_speed": 1.03 }, { "narration": "The exact filtered count describes the full query even though only one page is drawn.", "speech_text": [ "The exact filtered count describes the full query even though only one page is drawn." ], "authored_hold": 0.7, "resolved_hold": 0.52, "speed_multiplier": 1.0, "effective_speed": 1.03 }, { "narration": "Export the complete current filter and visible-column selection. The source database remains unchanged.", "speech_text": [ "Export the complete current filter and visible-column selection.", "The source database remains unchanged." ], "authored_hold": 0.7, "resolved_hold": 0.52, "speed_multiplier": 1.0, "effective_speed": 1.03 } ], "assembly": { "version": "2026-08-11-natural-sentences-v1", "sample_rate": 24000, "lead_silence_seconds": 0.1, "tail_silence_seconds": 0.18, "sentence_pause_seconds": 0.12, "scene_hold_min_seconds": 0.32, "scene_hold_max_seconds": 0.52, "default_scene_hold_seconds": 0.42, "vad_frame_seconds": 0.005, "vad_peak_ratio": 0.002, "vad_absolute_floor": 2e-05 }, "cadence_profile": { "version": "2026-08-11-af-heart-scene-cadence-v6", "sha256": "4d728d67e73eea7e6203878879992f9050ae4a2677d717efdd68545104eb7812", "bytes": 23008, "enabled": false, "targets": { "slow_wpm": 125.0, "fast_wpm": 145.0, "calibration_wpm": 150.0 }, "safe_multiplier_bounds": { "minimum": 0.68, "maximum": 1.18 } }, "mastering": { "filters": [ 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"ad63ef3f2f18fa92e89f0ec2bde6941e81f83724c8d265414cb659c28077392d" } } } }, "scenes": [ { "scene": 1, "speech_start": 0.0, "speech_end": 5.67, "scene_end": 6.1899999999999995, "duration": 6.1899999999999995, "text": "Database Browser inspects large spaCR databases in a bounded, read-only view.", "speech_text": "Database Browser inspects large spacer databases in a bounded, read-only view.", "phonemes": "dˈæTəbˌAs bɹˈWzəɹ ɪnspˈɛkts lˈɑɹʤ spˈAsəɹ dˈæTəbˌAsᵻz ɪn ɐ bˈWndᵻd, ɹˈidˌOnli vjˈu.", "authored_hold_after": 0.7, "hold_after": 0.52, "base_speed": 1.03, "speed_multiplier": 1.0, "effective_speed": 1.03, "sentences": [ { "sentence": 1, "speech_start": 0.0, "speech_end": 5.67, "audible_start": 0.1, "audible_end": 5.49, "duration": 5.67, "gap_from_previous": null, "trimmed_lead": 0.32, "trimmed_tail": 0.385, "text": "Database Browser inspects large spaCR databases in a bounded, read-only view.", "speech_text": "Database Browser inspects large spacer databases in a bounded, read-only view.", "phonemes": "dˈæTəbˌAs bɹˈWzəɹ ɪnspˈɛkts lˈɑɹʤ spˈAsəɹ dˈæTəbˌAsᵻz ɪn ɐ bˈWndᵻd, ɹˈidˌOnli vjˈu." } ] }, { "scene": 2, "speech_start": 6.1899999999999995, "speech_end": 10.055, "scene_end": 10.575, "duration": 4.385, "text": "Choose a measurements database or its run folder and open it.", "speech_text": "Choose a measurements database or its run folder and open it.", "phonemes": "ʧˈuz ɐ mˈɛʒəɹmᵊnts dˈæTəbˌAs ɔɹ ɪts ɹˈʌn fˈOldəɹ ænd ˈOpᵊn ɪt.", "authored_hold_after": 0.7, "hold_after": 0.52, "base_speed": 1.03, "speed_multiplier": 1.0, "effective_speed": 1.03, "sentences": [ { "sentence": 1, "speech_start": 6.1899999999999995, "speech_end": 10.055, "audible_start": 6.289999999999999, "audible_end": 9.875, "duration": 3.865, "gap_from_previous": null, "trimmed_lead": 0.28, "trimmed_tail": 0.405, "text": "Choose a measurements database or its run folder and open it.", "speech_text": "Choose a measurements database or its run folder and open it.", "phonemes": "ʧˈuz ɐ mˈɛʒəɹmᵊnts dˈæTəbˌAs ɔɹ ɪts ɹˈʌn fˈOldəɹ ænd ˈOpᵊn ɪt." } ] }, { "scene": 3, "speech_start": 10.575, "speech_end": 14.954999999999998, "scene_end": 15.474999999999998, "duration": 4.899999999999999, "text": "Select a table after reviewing its purpose and read-only status.", "speech_text": "Select a table after reviewing its purpose and read-only status.", "phonemes": "səlˈɛkt ɐ tˈAbᵊl ˈæftəɹ ɹəvjˈuɪŋ ɪts pˈɜɹpəs ænd ɹˈidˌOnli stˈATəs.", "authored_hold_after": 0.7, "hold_after": 0.52, "base_speed": 1.03, "speed_multiplier": 1.0, "effective_speed": 1.03, "sentences": [ { "sentence": 1, "speech_start": 10.575, "speech_end": 14.954999999999998, "audible_start": 10.674999999999999, "audible_end": 14.774999999999999, "duration": 4.38, "gap_from_previous": null, "trimmed_lead": 0.265, "trimmed_tail": 0.355, "text": "Select a table after reviewing its purpose and read-only status.", "speech_text": "Select a table after reviewing its purpose and read-only status.", "phonemes": "səlˈɛkt ɐ tˈAbᵊl ˈæftəɹ ɹəvjˈuɪŋ ɪts pˈɜɹpəs ænd ɹˈidˌOnli stˈATəs." } ] }, { "scene": 4, "speech_start": 15.474999999999998, "speech_end": 21.404999999999998, "scene_end": 21.924999999999997, "duration": 6.449999999999999, "text": "The preview loads a bounded page while reporting the complete row and column counts separately.", "speech_text": "The preview loads a bounded page while reporting the complete row and column counts separately.", "phonemes": "ðə pɹˈivjˌu lˈOdz ɐ bˈWndᵻd pˈAʤ wˌIl ɹᵻpˈɔɹTɪŋ ðə kəmplˈit ɹˈO ænd kˈɑləm kˈWnts sˈɛpəɹətli.", "authored_hold_after": 0.7, "hold_after": 0.52, "base_speed": 1.03, "speed_multiplier": 1.0, "effective_speed": 1.03, "sentences": [ { "sentence": 1, "speech_start": 15.474999999999998, "speech_end": 21.404999999999998, "audible_start": 15.574999999999998, "audible_end": 21.224999999999998, "duration": 5.93, "gap_from_previous": null, "trimmed_lead": 0.285, "trimmed_tail": 0.385, "text": "The preview loads a bounded page while reporting the complete row and column counts separately.", "speech_text": "The preview loads a bounded page while reporting the complete row and column counts separately.", "phonemes": "ðə pɹˈivjˌu lˈOdz ɐ bˈWndᵻd pˈAʤ wˌIl ɹᵻpˈɔɹTɪŋ ðə kəmplˈit ɹˈO ænd kˈɑləm kˈWnts sˈɛpəɹətli." } ] }, { "scene": 5, "speech_start": 21.924999999999997, "speech_end": 27.72, "scene_end": 28.24, "duration": 6.315000000000001, "text": "Search columns to make wide feature tables readable without changing the underlying rows.", "speech_text": "Search columns to make wide feature tables readable without changing the underlying rows.", "phonemes": "sˈɜɹʧ kˈɑləmz tə mˌAk wˈId fˈiʧəɹ tˈAbᵊlz ɹˈidəbᵊl wɪðˈWt ʧˈAnʤɪŋ ði ˌʌndəɹlˈIɪŋ ɹˈOz.", "authored_hold_after": 0.7, "hold_after": 0.52, "base_speed": 1.03, "speed_multiplier": 1.0, "effective_speed": 1.03, "sentences": [ { "sentence": 1, "speech_start": 21.924999999999997, "speech_end": 27.72, "audible_start": 22.025, "audible_end": 27.54, "duration": 5.795, "gap_from_previous": null, "trimmed_lead": 0.275, "trimmed_tail": 0.355, "text": "Search columns to make wide feature tables readable without changing the underlying rows.", "speech_text": "Search columns to make wide feature tables readable without changing the underlying rows.", "phonemes": "sˈɜɹʧ kˈɑləmz tə mˌAk wˈId fˈiʧəɹ tˈAbᵊlz ɹˈidəbᵊl wɪðˈWt ʧˈAnʤɪŋ ði ˌʌndəɹlˈIɪŋ ɹˈOz." } ] }, { "scene": 6, "speech_start": 28.24, "speech_end": 34.964999999999996, "scene_end": 35.485, "duration": 7.245000000000001, "text": "Build a structured filter. Column names and operators are validated, and values are bound safely.", "speech_text": "Build a structured filter. Column names and operators are validated, and values are bound safely.", "phonemes": "bˈɪld ɐ stɹˈʌkʧəɹd fˈɪltəɹ. kˈɑləm nˈAmz ænd ˈɑpəɹˌATəɹz ɑɹ vˈælɪdˌATᵻd, ænd vˈæljuz ɑɹ bˈWnd sˈAfli.", "authored_hold_after": 0.7, "hold_after": 0.52, "base_speed": 1.03, "speed_multiplier": 1.0, "effective_speed": 1.03, "sentences": [ { "sentence": 1, "speech_start": 28.24, "speech_end": 29.99, "audible_start": 28.34, "audible_end": 29.81, "duration": 1.75, "gap_from_previous": null, "trimmed_lead": 0.255, "trimmed_tail": 0.32, "text": "Build a structured filter.", "speech_text": "Build a structured filter.", "phonemes": "bˈɪld ɐ stɹˈʌkʧəɹd fˈɪltəɹ." }, { "sentence": 2, "speech_start": 30.11, "speech_end": 34.964999999999996, "audible_start": 30.209999999999997, "audible_end": 34.785, "duration": 4.855, "gap_from_previous": 0.4, "trimmed_lead": 0.285, "trimmed_tail": 0.385, "text": "Column names and operators are validated, and values are bound safely.", "speech_text": "Column names and operators are validated, and values are bound safely.", "phonemes": "kˈɑləm nˈAmz ænd ˈɑpəɹˌATəɹz ɑɹ vˈælɪdˌATᵻd, ænd vˈæljuz ɑɹ bˈWnd sˈAfli." } ] }, { "scene": 7, "speech_start": 35.485, "speech_end": 41.15, "scene_end": 41.67, "duration": 6.185000000000002, "text": "The exact filtered count describes the full query even though only one page is drawn.", "speech_text": "The exact filtered count describes the full query even though only one page is drawn.", "phonemes": "ði ɪɡzˈækt fˈɪltəɹd kˈWnt dəskɹˈIbz ðə fˈʊl kwˈɪɹi ˈivən ðˌO ˈOnli wˈʌn pˈAʤ ɪz dɹˈɔn.", "authored_hold_after": 0.7, "hold_after": 0.52, "base_speed": 1.03, "speed_multiplier": 1.0, "effective_speed": 1.03, "sentences": [ { "sentence": 1, "speech_start": 35.485, "speech_end": 41.15, "audible_start": 35.585, "audible_end": 40.97, "duration": 5.665, "gap_from_previous": null, "trimmed_lead": 0.285, "trimmed_tail": 0.4, "text": "The exact filtered count describes the full query even though only one page is drawn.", "speech_text": "The exact filtered count describes the full query even though only one page is drawn.", "phonemes": "ði ɪɡzˈækt fˈɪltəɹd kˈWnt dəskɹˈIbz ðə fˈʊl kwˈɪɹi ˈivən ðˌO ˈOnli wˈʌn pˈAʤ ɪz dɹˈɔn." } ] }, { "scene": 8, "speech_start": 41.67, "speech_end": 48.56, "scene_end": 49.080000000000005, "duration": 7.410000000000004, "text": "Export the complete current filter and visible-column selection. The source database remains unchanged.", "speech_text": "Export the complete current filter and visible-column selection. The source database remains unchanged.", "phonemes": "ˈɛkspˌɔɹt ðə kəmplˈit kˈɜɹənt fˈɪltəɹ ænd vˈɪzəbᵊlkˌɑləm səlˈɛkʃən. ðə sˈɔɹs dˈæTəbˌAs ɹəmˈAnz ˌʌnʧˈAnʤd.", "authored_hold_after": 0.7, "hold_after": 0.52, "base_speed": 1.03, "speed_multiplier": 1.0, "effective_speed": 1.03, "sentences": [ { "sentence": 1, "speech_start": 41.67, "speech_end": 45.910000000000004, "audible_start": 41.77, "audible_end": 45.730000000000004, "duration": 4.24, "gap_from_previous": null, "trimmed_lead": 0.21, "trimmed_tail": 0.35, "text": "Export the complete current filter and visible-column selection.", "speech_text": "Export the complete current filter and visible-column selection.", "phonemes": "ˈɛkspˌɔɹt ðə kəmplˈit kˈɜɹənt fˈɪltəɹ ænd vˈɪzəbᵊlkˌɑləm səlˈɛkʃən." }, { "sentence": 2, "speech_start": 46.03, "speech_end": 48.56, "audible_start": 46.13, "audible_end": 48.38, "duration": 2.53, "gap_from_previous": 0.4, "trimmed_lead": 0.27, "trimmed_tail": 0.325, "text": "The source database remains unchanged.", "speech_text": "The source database remains unchanged.", "phonemes": "ðə sˈɔɹs dˈæTəbˌAs ɹəmˈAnz ˌʌnʧˈAnʤd." } ] } ] }