Mastering Book 2nd Edition Errata and Online Links


The printing of the book can be identified on page 4 at the bottom in the series of numbers. It begins with 09 (for the year 2009) and ends with a number for the printing. Some of the corrections mentioned below are already corrected in the third printing:

1. Page 177: Paragraph starting with: "The calibrated monitor...". This sentence should read: "Despite that, the perceived loudness is a little less than in the home theatre because we have only 14 dB headroom, and 6 dB of transients have been removed by compression or limiting." (this has been updated in the 3nd printing)

Page 200. To clarify that ONLY when producing productions for the large theatre (typically motion pictures) the surrounds may be calibrated to -3 dB, the second paragraph on this page now reads:

Repeat this procedure for each of the 5 main loudspeakers, sending pink noise one channel at a time. For all productions intended for domestic use, all channels should be calibrated to the same gain (except the LFE). Only when producing recordings to be used in the large theatre (e.g. motion pictures) should the surrounds be calibrated 3 dB lower than the fronts.

Page 204. Footnote #10: In fact, when theatrical motion pictures are made into DVDs or Television broadcasts, the surrounds are turned down 3 dB during dubbing.

Page 242. Rich Tozzoli. We are using equal level calibration for concerts with video. In broadcast, that is the fine line again where you will have to mix for the consumer. Bob turned my surrounds up 3 dB and compared to film practice, I usually print them hot. It was definitely the right call.


2. Page 180: K-System Meter Manufacturers. I have not tested all of these meters and cannot guarantee their accuracy. Please bring any errors to my attention. Thanks. Bob Katz

Avid Pro Tools 11. Pro Tools 11 now includes the three K-System meter modes on all channel strips.

Audio Pluggers. A MacIntosh plugin suitable for Pro Tools. Also includes loudness measurement to ITU BS.1770 in LKFS to conform with the EBU broadcast initiative.

Audiofile Engineering Spectre Peak Meter

Izotope Ozone - Available for mac and PC. This is a "complete" mastering system (please take this terminology with great caution). The manual is missing the info. Go to the options menus I/O tab (or right click on the output meter) and you will see the input/output meter options. From the Type drop down menu you can choose K-System. Then K-12, K-14, and K-20 are available. This was a new addition in Ozone 4.

KVR Meter. A free implementation of the K-System by Martin Zuther.

Martin Zuther K-System Meter. A free implementation in VST or standalone which also makes available ITU BS.1770-1 loudness meter weighting.

Metric Halo Spectrafoo

N-Track Studio

Nugen Audio



PSP Xenon precision limiter with K-System metering

RME Digicheck

Roger Nichols Digital Inspector XL


Reaper: Forum

Steinberg Wavelab (ver. 6)

Toneboosters. A K-System meter with EBU R.128 gating available and ITU compliance, a variable target level.... 

Universal Audio limiter with K-System metering

University of York MRC meter by David Malham


VSonics VMeters. Includes K-System and also LKFS (LUFS) weighted EBU loudness metering.


Links to sites mentioned or good sites relevant to chapters

Chapter 14 CRC Loudness Meter article on the CRC Loudness meter

Chapter 14 (pages 170-) DR Database Dynamic range Database. This is actually a database of recordings mentioning their peak-to-loudness ratios. I also call this the "microdynamic" measure. But this database is not a measure of macrodynamic range or loudness range---so I disagree with calling this a database of dynamic range. Although it is highly likely that material with good microdynamics will also have good macrodynamics, this is not always the case.

Page 308. Online Audio Calculators