AES Store

Journal Forum

Reflecting on Reflections - June 2014

Audibility of a CD-Standard A/DA/A Loop Inserted into High-Resolution Audio Playback - September 2007

Quiet Thoughts on a Deafening Problem - May 2014
1 comment

Access Journal Forum

AES E-Library

Frequency Weighting and Ballistics for Program Loudness Modelling

There has been both experimental and anecdotal evidence that the low-frequency performance in the ITU-R Recommendation BS.1770 program loudness measurement algorithm could be improved. A listening test with an emphasis on low frequency content was therefore conducted. An attempt was made to analyse the results in octave bands by multiple regression, but larger than expected variability precluded any useful outcome from this method. A simpler regression analysis was therefore performed using several fixed weighting curves and asymmetric integration with a range of time constants. Although the results largely support the present low frequency weighting curve, they also indicate that asymmetric integration provides better program loudness assessment than symmetric integration or high level gating.

AES Convention: Paper Number:
Publication Date:

Click to purchase paper or login as an AES member. If your company or school subscribes to the E-Library then switch to the institutional version. If you are not an AES member and would like to subscribe to the E-Library then Join the AES!

This paper costs $20 for non-members, $5 for AES members and is free for E-Library subscribers.

Learn more about the AES E-Library

E-Library Location:

Start a discussion about this paper!

Facebook   Twitter   LinkedIn   Google+   YouTube   RSS News Feeds  
AES - Audio Engineering Society