See https://xsltfiddle.liberty-development.net/jxNakAJ/57
From Statement of Work document:
Data embedded in the CodingHistory field must follow EBU Technical Recommendation R98-1999 (https://tech.ebu.ch/docs/r/r098.pdf).
Additionally, NYPR further specifically requires that the free-text (T=) parameter of the first line follows the following format:
T= [Technical information] ; [Engineer’s comments]
i.e., the technical info and engineer’s comments will be separated by a space, a semicolon, and a space.
The Technical information needed depends on the carrier format:
Analog discs
Example for a microgroove RIAA disc with fused grooves:
T=[St] 0.7 ET [RF] 50 Hz [TO] 500 Hz [RO] 13.7 dB [Sp] 33.3 rpm [Ca] 0dBFS=+18dBu ; Some fused grooves
Include the following information in this order:
Stylus size and shape, preceded by [St] and a space, expressed in thousands of an inch, followed by shape indicator.
E. g.
[St] 2.0 ET for 2 mil elliptical truncated stylus
[St] 3.5 FCR for 3.5 mil full conical radius stylus
Compensation EQ low frequency rolloff or “rumble filter”, preceded by [RF] and a space, expressed as its corner frequency. Enter 0 if no LF rolloff or rumble filter are applied (e.g. 2-point compensation EQ).
E.g.
[RF] 50 Hz for a 50 Hz low-frequency rolloff
Compensation EQ turnover, preceded by [TO] and a space, expressed as its corner frequency.
E.g.
[TO] 500 Hz for NAB EQ turnover
Compensation EQ high frequency rolloff, preceded by [RO] and a space, expressed as attenuation in dB at 10000 Hz.
E.g.
[RO] 12 dB for AES EQ rolloff (-12 dB at 10kHz)
Analog tapes
Example for a standard, 15 ips NAB tape with no noise reduction and no issues:
T=[EQ] NAB [NR] None [Sp] 15 ips [Ca] 0dBFS=+18dBu
Compensation EQ, preceded by [EQ] and a space, expressed as its common name.
E.g.
[EQ] NAB
Noise reduction, preceded by [NR] and a space, expressed as its common name. Enter ‘None’ if no noise reduction is applied.
E.g.
[NR] Dolby SR
Digital tapes and discs
Preemphasis, preceded by [PE] and a space, expressed as its common name (EIAJ). Enter ‘None’ if no emphasis is applied.
E.g.
[PE] EIAJ
All formats
Playback speed, preceded by [Sp] and a space, expressed in the standard US format such as 15 ips or 33.3 rpm
Calibration, analog sources, preceded by [Ca] and a space, expressed as dBFS=dBu to indicate the calibration of the converter in its analog-to-digital interface mode.
E.g.
[Ca] 0dBFS=+18dBu
Calibration, digital sources, preceded by [Ca] and a space, expressed as Slave to indicate the calibration of the converter in its digital-to-digital interface mode.
E.g.
[Ca] Slave
Widespread transfer issues, after a space, a semicolon and a space, named following a consistent controlled vocabulary such as the AV Artifact Atlas (https://www.avartifactatlas.com/tags.html#audio).