{ "schema": 1, "language": "en", "lang_code": "a", "dialect": "us", "voice": "am_eric", "speed": 0.88, "sample_rate": 24000, "total_duration": 44.625, "media_sha256": "698efc903b55c9dda6d2ca561107a16221fa8841f3e64123d656328660a660c1", "media_bytes": 274066, "render_fingerprint": "155be8bae28bdc3d65ca9ac04cb3903b8be47b591ec061d6d8c340072664b13e", "render_inputs": { "renderer": "render_all_voices-v4", "lesson": "34_database", "language": "en", "lang_code": "a", "dialect": "us", "voice": "am_eric", "speed": 0.88, "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": 0.88 }, { "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": 0.88 }, { "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": 0.88 }, { "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": 0.88 }, { "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": 0.88 }, { "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": 0.88 }, { "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": 0.88 }, { "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": 0.88 } ], "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": 4.81, "scene_end": 5.33, "duration": 5.33, "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": 0.88, "speed_multiplier": 1.0, "effective_speed": 0.88, "sentences": [ { "sentence": 1, "speech_start": 0.0, "speech_end": 4.81, "audible_start": 0.1, "audible_end": 4.63, "duration": 4.81, "gap_from_previous": null, "trimmed_lead": 0.175, "trimmed_tail": 0.44, "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": 5.33, "speech_end": 8.855, "scene_end": 9.375, "duration": 4.045, "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": 0.88, "speed_multiplier": 1.0, "effective_speed": 0.88, "sentences": [ { "sentence": 1, "speech_start": 5.33, "speech_end": 8.855, "audible_start": 5.43, "audible_end": 8.675, "duration": 3.525, "gap_from_previous": null, "trimmed_lead": 0.175, "trimmed_tail": 0.425, "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": 9.375, "speech_end": 13.254999999999999, "scene_end": 13.774999999999999, "duration": 4.399999999999999, "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": 0.88, "speed_multiplier": 1.0, "effective_speed": 0.88, "sentences": [ { "sentence": 1, "speech_start": 9.375, "speech_end": 13.254999999999999, "audible_start": 9.475, "audible_end": 13.075, "duration": 3.88, "gap_from_previous": null, "trimmed_lead": 0.17, "trimmed_tail": 0.4, "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": 13.774999999999999, "speech_end": 18.884999999999998, "scene_end": 19.404999999999998, "duration": 5.629999999999999, "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": 0.88, "speed_multiplier": 1.0, "effective_speed": 0.88, "sentences": [ { "sentence": 1, "speech_start": 13.774999999999999, "speech_end": 18.884999999999998, "audible_start": 13.874999999999998, "audible_end": 18.705, "duration": 5.11, "gap_from_previous": null, "trimmed_lead": 0.185, "trimmed_tail": 0.43, "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": 19.404999999999998, "speech_end": 24.584999999999997, "scene_end": 25.104999999999997, "duration": 5.699999999999999, "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": 0.88, "speed_multiplier": 1.0, "effective_speed": 0.88, "sentences": [ { "sentence": 1, "speech_start": 19.404999999999998, "speech_end": 24.584999999999997, "audible_start": 19.505, "audible_end": 24.404999999999998, "duration": 5.18, "gap_from_previous": null, "trimmed_lead": 0.16, "trimmed_tail": 0.435, "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": 25.104999999999997, "speech_end": 31.464999999999996, "scene_end": 31.984999999999996, "duration": 6.879999999999999, "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": 0.88, "speed_multiplier": 1.0, "effective_speed": 0.88, "sentences": [ { "sentence": 1, "speech_start": 25.104999999999997, "speech_end": 27.025, "audible_start": 25.205, "audible_end": 26.844999999999995, "duration": 1.92, "gap_from_previous": null, "trimmed_lead": 0.13, "trimmed_tail": 0.25, "text": "Build a structured filter.", "speech_text": "Build a structured filter.", "phonemes": "bˈɪld ɐ stɹˈʌkʧəɹd fˈɪltəɹ." }, { "sentence": 2, "speech_start": 27.144999999999996, "speech_end": 31.464999999999996, "audible_start": 27.244999999999997, "audible_end": 31.284999999999997, "duration": 4.32, "gap_from_previous": 0.4, "trimmed_lead": 0.195, "trimmed_tail": 0.435, "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": 31.984999999999996, "speech_end": 36.87499999999999, "scene_end": 37.394999999999996, "duration": 5.41, "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": 0.88, "speed_multiplier": 1.0, "effective_speed": 0.88, "sentences": [ { "sentence": 1, "speech_start": 31.984999999999996, "speech_end": 36.87499999999999, "audible_start": 32.084999999999994, "audible_end": 36.69499999999999, "duration": 4.89, "gap_from_previous": null, "trimmed_lead": 0.185, "trimmed_tail": 0.45, "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": 37.394999999999996, "speech_end": 44.105, "scene_end": 44.625, "duration": 7.230000000000004, "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": 0.88, "speed_multiplier": 1.0, "effective_speed": 0.88, "sentences": [ { "sentence": 1, "speech_start": 37.394999999999996, "speech_end": 41.19499999999999, "audible_start": 37.495, "audible_end": 41.01499999999999, "duration": 3.8, "gap_from_previous": null, "trimmed_lead": 0.175, "trimmed_tail": 0.425, "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": 41.315, "speech_end": 44.105, "audible_start": 41.41499999999999, "audible_end": 43.925, "duration": 2.79, "gap_from_previous": 0.4, "trimmed_lead": 0.16, "trimmed_tail": 0.375, "text": "The source database remains unchanged.", "speech_text": "The source database remains unchanged.", "phonemes": "ðə sˈɔɹs dˈæTəbˌAs ɹəmˈAnz ˌʌnʧˈAnʤd." } ] } ] }