ISO 2969:2015 PDF
Cinematography — B-chain electro-acoustic reponse of motion-picture control rooms and indoor theatres — Specifications and measurements
Cinematography — B-chain electro-acoustic reponse of motion-picture control rooms and indoor theatres — Specifications and measurements
- Статус документа:
- Действующий
- Формат:
- Электронный (PDF)
- Количество страниц:
- 18
- Дата публикации:
- 2 июня 2015 г.
- Издание:
- ISO IS 2969 edition 3 version 1
- ICS:
- 37.060.99
ISO 2969:2015 specifies the measurement methods and characteristic electroacoustic frequency response of the B-chain of motion-picture dubbing theatres (mixing rooms), screening rooms, and indoor theatres whose room volume exceeds 125 m3 (4,414 ft3). It is intended to assist in standardization of monitoring and reproduction of motion-picture sound in such rooms. The goal is to have constant perceived loudness and frequency response from installation to installation, and from position-to-position within an installation. This International Standard does not cover that part of the motion-picture sound system extending from the transducer to the input source audio selector.
Abstract
Overview
ISO 2969:2015 - Cinematography - specifies the measurement methods and the characteristic electro-acoustic frequency response of the B‑chain used in motion‑picture dubbing theatres (mixing rooms), screening rooms, and indoor theatres with a room volume greater than 125 m3. The standard is intended to standardize monitoring and reproduction of motion‑picture sound so perceived loudness and frequency response are consistent from installation to installation and across listening positions within a room. It applies to the B‑chain (from the input source audio selector to the listening area) and does not cover the A‑chain (transducer to source selector).
Key topics and technical requirements
- Scope & definitions: Clarifies A‑chain vs B‑chain, pink noise, wide‑range tracks, Curve‑X (X‑Curve) and Curve‑N.
- Measurement method:
- Use wide‑band pink noise as the test signal and compute a spatial and temporal average of SPL in 1/3‑octave bands.
- Measure at principal listening positions (mixing personnel, producer) or a set of positions that reduce position‑to‑position response standard deviation to
Технические детали
- Технический комитет
- ISO/TC 36 - Cinematography
- SKU
- ISO 2969:2015
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