{
  "$schema": "/api/schemas/documents.schema.json",
  "apiVersion": "1.0.0",
  "generatedAt": "2026-06-23T16:57:17.111Z",
  "sourcePath": "src/main/data/docs",
  "docId": "SMPTE.RP104.2005",
  "document": {
    "abstract": "(1.1) This practice describes the cross-modulation method of measuring high-frequency distortion introduced during the production of variable-area audio motion-picture release prints. Through measurements of distortion at various negative densities, it is possible to choose negative densities that will produce audio prints having minimum distortion and optimum quality under the particular method of processing employed. (1.2) Cross-modulation tests are used extensively in establishing and maintaining photographic control of variable-area audio tracks. In consideration of waveform, output level, and noise reduction, it is necessary for variable-area prints to have high density contrast. At satisfactorily high track densities, an appreciable amount of image spread occurs, producing partial rectification of high frequencies. To compensate for this, an equal and opposite amount of image spread is introduced into the negative. Therefore, to establish the correct negative-and print-density combination, amplitude-modulated high frequencies are recorded and printed over a suitable density range. By measuring the rectified component from the prints, the correct density combinations are indicated.",
    "abstract$meta": {
      "confidence": "high",
      "note": "Parsed from sibling XML (_source/SMPTE/APTARA/DL Project Files/08242015 STANDARDS REVISED DEPOSIT/smptes_rp-104-2005_1/rp0104-2005.xml)",
      "source": "parsed",
      "updated": "2026-05-12T21:55:08.813Z"
    },
    "approvalDate": "2005-12-16",
    "approvalDate$meta": {
      "confidence": "high",
      "note": "Cross-filled from Zoho standards export (_source/SMPTE/Zoho/SMPTE Standards Document Zoho Export 2026-05-21.json); Zoho is canonical for SMPTE standards metadata, registry value overwritten",
      "originalValue": "2005",
      "overridden": true,
      "source": "parsed",
      "updated": "2026-06-15T20:27:42.872Z",
      "version": "smpte-zoho-standards@v1"
    },
    "copyright": {
      "holder": "Society of Motion Picture and Television Engineers, Inc.",
      "holder$meta": {
        "confidence": "high",
        "note": "Parsed from sibling XML (_source/SMPTE/APTARA/DL Project Files/08242015 STANDARDS REVISED DEPOSIT/smptes_rp-104-2005_1/rp0104-2005.xml)",
        "source": "parsed",
        "updated": "2026-05-12T21:55:08.813Z"
      },
      "year": "2005",
      "year$meta": {
        "confidence": "high",
        "note": "Parsed from sibling XML (_source/SMPTE/APTARA/DL Project Files/08242015 STANDARDS REVISED DEPOSIT/smptes_rp-104-2005_1/rp0104-2005.xml)",
        "source": "parsed",
        "updated": "2026-05-12T21:55:08.813Z"
      }
    },
    "copyright$meta": {
      "confidence": "high",
      "note": "Parsed from sibling XML (_source/SMPTE/APTARA/DL Project Files/08242015 STANDARDS REVISED DEPOSIT/smptes_rp-104-2005_1/rp0104-2005.xml)",
      "source": "parsed",
      "updated": "2026-05-12T21:55:08.813Z"
    },
    "docId": "SMPTE.RP104.2005",
    "docId$meta": {
      "confidence": "high",
      "note": "Calculated from parsed/inferred metadata",
      "originalValue": null,
      "source": "manual",
      "sourceUrl": "https://pub.smpte.org/doc/rp104/20051216-pub/",
      "updated": "2025-10-30T00:00:00Z"
    },
    "docLabel": "SMPTE RP 104:2005",
    "docLabel$meta": {
      "confidence": "medium",
      "source": "manual",
      "updated": "2025-07-01T00:00:00Z"
    },
    "docNumber": "104",
    "docNumber$meta": {
      "confidence": "medium",
      "source": "manual",
      "updated": "2025-07-01T00:00:00Z"
    },
    "docTitle": "Cross-Modulation Tests for Variable-Area Photographic Audio Tracks",
    "docTitle$meta": {
      "confidence": "medium",
      "source": "manual",
      "updated": "2025-07-01T00:00:00Z"
    },
    "docType": "Recommended Practice",
    "docType$meta": {
      "confidence": "medium",
      "source": "manual",
      "updated": "2025-07-01T00:00:00Z"
    },
    "doi": "10.5594/SMPTE.RP104.2005",
    "doi$meta": {
      "confidence": "medium",
      "source": "manual",
      "updated": "2025-07-01T00:00:00Z"
    },
    "familyId": "104",
    "familyId$meta": {
      "confidence": "high",
      "note": "Parsed from sibling XML (_source/SMPTE/APTARA/DL Project Files/08242015 STANDARDS REVISED DEPOSIT/smptes_rp-104-2005_1/rp0104-2005.xml)",
      "source": "parsed",
      "updated": "2026-05-12T21:55:08.813Z"
    },
    "group": "smpte-27c-tc",
    "group$meta": {
      "confidence": "medium",
      "excludeChanges": true,
      "note": "TRIAGE: Committee history: 20f-tc absorbed into 27c-tc. Registry has the modern merged committee",
      "source": "manual",
      "updated": "2026-05-13T21:25:53.974Z"
    },
    "href": "https://doi.org/10.5594/SMPTE.RP104.2005",
    "href$meta": {
      "confidence": "medium",
      "source": "manual",
      "updated": "2025-07-01T00:00:00Z"
    },
    "icsCodes": [
      {
        "code": "33.160.30",
        "description": "Audio systems"
      },
      {
        "code": "37.060",
        "description": "Cinematography"
      },
      {
        "code": "37.060.99",
        "description": "Other standards related to cinematography"
      }
    ],
    "icsCodes$meta": {
      "confidence": "high",
      "note": "Parsed from sibling XML (_source/SMPTE/APTARA/DL Project Files/08242015 STANDARDS REVISED DEPOSIT/smptes_rp-104-2005_1/rp0104-2005.xml)",
      "source": "parsed",
      "updated": "2026-05-12T21:55:08.813Z"
    },
    "isbn": "978-1-61482-131-1",
    "isbn$meta": {
      "confidence": "high",
      "note": "Parsed from sibling XML (_source/SMPTE/APTARA/DL Project Files/08242015 STANDARDS REVISED DEPOSIT/smptes_rp-104-2005_1/rp0104-2005.xml)",
      "source": "parsed",
      "updated": "2026-05-12T21:55:08.813Z"
    },
    "keywords": [
      "Film",
      "Projection",
      "Test & Measurement",
      "Audio",
      "Sound"
    ],
    "keywords$meta": {
      "confidence": "medium",
      "source": "manual",
      "updated": "2025-07-01T00:00:00Z"
    },
    "numberOfPages": "6",
    "numberOfPages$meta": {
      "confidence": "high",
      "note": "Cross-filled from Zoho standards export (_source/SMPTE/Zoho/SMPTE Standards Document Zoho Export 2026-05-21.json)",
      "source": "parsed",
      "updated": "2026-06-15T20:12:21.844Z",
      "version": "smpte-zoho-standards@v1"
    },
    "pages": "1–6",
    "pages$meta": {
      "confidence": "high",
      "note": "Parsed from sibling XML (_source/SMPTE/APTARA/DL Project Files/08242015 STANDARDS REVISED DEPOSIT/smptes_rp-104-2005_1/rp0104-2005.xml)",
      "source": "parsed",
      "updated": "2026-05-12T21:55:08.813Z"
    },
    "productNumber": "SSD001132",
    "productNumber$meta": {
      "confidence": "high",
      "note": "Parsed from sibling XML (_source/SMPTE/APTARA/DL Project Files/08242015 STANDARDS REVISED DEPOSIT/smptes_rp-104-2005_1/rp0104-2005.xml)",
      "source": "parsed",
      "updated": "2026-05-12T21:55:08.813Z"
    },
    "publicationDate": "2005-12-16",
    "publicationDate$meta": {
      "confidence": "medium",
      "source": "manual",
      "updated": "2025-07-01T00:00:00Z"
    },
    "publisher": "SMPTE",
    "publisher$meta": {
      "confidence": "medium",
      "source": "manual",
      "updated": "2025-07-01T00:00:00Z"
    },
    "publisherLocation": {
      "city": "White Plains, NY",
      "city$meta": {
        "confidence": "high",
        "note": "Parsed from sibling XML (_source/SMPTE/APTARA/DL Project Files/08242015 STANDARDS REVISED DEPOSIT/smptes_rp-104-2005_1/rp0104-2005.xml)",
        "source": "parsed",
        "updated": "2026-05-12T21:55:08.813Z"
      },
      "country": "USA",
      "country$meta": {
        "confidence": "high",
        "note": "Parsed from sibling XML (_source/SMPTE/APTARA/DL Project Files/08242015 STANDARDS REVISED DEPOSIT/smptes_rp-104-2005_1/rp0104-2005.xml)",
        "source": "parsed",
        "updated": "2026-05-12T21:55:08.813Z"
      }
    },
    "publisherLocation$meta": {
      "confidence": "high",
      "note": "Parsed from sibling XML (_source/SMPTE/APTARA/DL Project Files/08242015 STANDARDS REVISED DEPOSIT/smptes_rp-104-2005_1/rp0104-2005.xml)",
      "source": "parsed",
      "updated": "2026-05-12T21:55:08.813Z"
    },
    "references": {
      "bibliographic": [
        "10.5594-J14711",
        "10.5594-J07583",
        "10.5594-J07182"
      ],
      "bibliographic$meta": {
        "confidence": "medium",
        "source": "manual",
        "updated": "2025-07-01T00:00:00Z"
      }
    },
    "releaseTag": "20051216-pub",
    "releaseTag$meta": {
      "confidence": "high",
      "note": "Release tag parsed from URL folder structure",
      "originalValue": null,
      "source": "parsed",
      "updated": "2025-10-12T05:19:21.355Z"
    },
    "resolvedHref": "https://pub.smpte.org/doc/rp104/20051216-pub/",
    "resolvedHref$meta": {
      "confidence": "high",
      "note": "Final URL resolved via URL redirect verification",
      "originalValue": "https://my.smpte.org/s/product-details?id=a1BVR0000007NaD",
      "overridden": true,
      "source": "resolved",
      "updated": "2025-10-30T22:50:13.081Z",
      "version": "extractDocs.js@commit:ee2844fb1cf2"
    },
    "standardId": "20260",
    "standardId$meta": {
      "confidence": "high",
      "note": "Parsed from sibling XML (_source/SMPTE/APTARA/DL Project Files/08242015 STANDARDS REVISED DEPOSIT/smptes_rp-104-2005_1/rp0104-2005.xml)",
      "source": "parsed",
      "updated": "2026-05-12T21:55:08.813Z"
    },
    "status": {
      "active": true,
      "active$meta": {
        "confidence": "medium",
        "source": "manual",
        "updated": "2025-07-01T00:00:00Z"
      },
      "amended": false,
      "amended$meta": {
        "confidence": "high",
        "note": "Parsed from wrapper #amendments",
        "originalValue": null,
        "source": "parsed",
        "updated": "2025-10-12T05:19:21.355Z"
      },
      "latestVersion": true,
      "latestVersion$meta": {
        "confidence": "high",
        "note": "Calculated from the releaseTag(s)",
        "originalValue": null,
        "source": "resolved",
        "updated": "2025-10-12T05:19:21.355Z"
      },
      "reaffirmDate": "2010-07-01",
      "reaffirmDate$meta": {
        "confidence": "medium",
        "source": "manual",
        "updated": "2025-07-01T00:00:00Z"
      },
      "reaffirmed": true,
      "reaffirmed$meta": {
        "confidence": "medium",
        "source": "manual",
        "updated": "2025-07-01T00:00:00Z"
      },
      "stabilized": true,
      "stabilized$meta": {
        "confidence": "medium",
        "source": "manual",
        "updated": "2025-07-01T00:00:00Z"
      },
      "stabilizedDate": "2015-07-07",
      "stabilizedDate$meta": {
        "confidence": "high",
        "note": "Cross-filled from Zoho standards export (_source/SMPTE/Zoho/SMPTE Standards Document Zoho Export 2026-05-21.json); Zoho is canonical for SMPTE standards metadata, registry value overwritten",
        "originalValue": "2015-07-01",
        "overridden": true,
        "source": "parsed",
        "updated": "2026-06-15T20:17:48.985Z",
        "version": "smpte-zoho-standards@v1"
      },
      "superseded": false,
      "superseded$meta": {
        "confidence": "high",
        "note": "Calculated from the releaseTag(s)",
        "originalValue": null,
        "source": "resolved",
        "updated": "2025-10-12T05:19:21.355Z"
      }
    }
  }
}