ANALYSIS OF ALL-PASS FILTERS APPLICATION TO ELIMINATE NEGATIVE EFFECTS OF LOUDNESS WAR TREND

Marcin Maciejewski

m.maciejewski@pollub.pl
Lublin Univeristy of Technology, Department of Electronics and Information Technologies (Poland)
https://orcid.org/0000-0001-9116-5481

Wojciech Surtel


Lublin Univeristy of Technology, Department of Electronics and Information Technologies (Poland)
https://orcid.org/0000-0003-1166-4083

Krzysztof Nowak


Lublin Univeristy of Technology, Department of Electronics and Information Technologies (Poland)
https://orcid.org/0000-0002-3117-7998

Abstract

In this paper the influence of all-pass filters on musical material with applied hypercompression dynamics (loudness war trend) was analyzed. These filters are characterized by shifting phase in selected frequency band of signal, not by change of their amplitude levels. Because a lot of music information is present in music tracks, the dynamic range was tested together with influence of other sound parameters like selectivity or instruments’ arrangement on scene, by running subjective tests on a group of respondents.


Keywords:

all-pass filters, digital filters, loudness war, dynamics compression

Adobe Audition CC, https://www.adobe.com/pl/products/audition.html (access: July 2018).
  Google Scholar

Altunian G.: The Difference Between a Graphic and a Parametric Equalizer. https://www.lifewire.com/graphic-vs-parametric-equalizer-3134842 (access: July 2018).
  Google Scholar

Berners D.: Q: What are allpass filters and what are they used for? https://www.uaudio.com/blog/allpass-filters/ (access: July 2018).
  Google Scholar

Dynamic Range DB, http://dr.loudness-war.info/ (access: July 2018).
  Google Scholar

EBU R 128, Loudness normalisation and permitted maximum level of audio signals. https://tech.ebu.ch/docs/r/r128.pdf (access: July 2018) Geneva 2014.
  Google Scholar

EBU Technical Review 274, Subjective assessment of audio quality – the means and methods within the EBU. https://tech.ebu.ch/docs/techreview/trev_274-hoeg.pdf (access: July 2018) Geneva 1997.
  Google Scholar

EBU Tech 3342: Zakres głośności: Deskryptor uzupełniający normalizację głośności zgodnie z zaleceniem EBU R 128. https://tech.ebu.ch/docs/tech/tech3342_PL.pdf (access: July 2018) Geneva 2010.
  Google Scholar

Jeffs R., Holden S., Bohn D.: Dynamics Processors -- Technology & Applications https://www.rane.com/note155.html (access: July 2018).
  Google Scholar

Orpheus R.: EBU R128 – The important audio breakthrough you’ve never heard of https://www.iconnectivity.com/blog/2017/6/10/ebu-r128-the-important-audio-breakthrough-youve-never-heard-of (access: July 2018).
  Google Scholar

Smith J.O.: Physical Audio Signal Processing, http://ccrma.stanford.edu/~jos/pasp/, online book, 2010 (access: July 2018).
  Google Scholar

TC Electronics, Loudness Explained. https://www.tcelectronic.com/brand/tcelectronic/loudness-explained (access: July 2018).
  Google Scholar

Vickers E.: The Loudness War: Background, Speculation and Recommendations. 129th AES Convention, San Francisco 2010.
  Google Scholar

Download


Published
2020-06-30

Cited by

Maciejewski, M., Surtel, W., & Nowak, K. (2020). ANALYSIS OF ALL-PASS FILTERS APPLICATION TO ELIMINATE NEGATIVE EFFECTS OF LOUDNESS WAR TREND. Informatyka, Automatyka, Pomiary W Gospodarce I Ochronie Środowiska, 10(2), 8–11. https://doi.org/10.35784/iapgos.568

Authors

Marcin Maciejewski 
m.maciejewski@pollub.pl
Lublin Univeristy of Technology, Department of Electronics and Information Technologies Poland
https://orcid.org/0000-0001-9116-5481

Authors

Wojciech Surtel 

Lublin Univeristy of Technology, Department of Electronics and Information Technologies Poland
https://orcid.org/0000-0003-1166-4083

Authors

Krzysztof Nowak 

Lublin Univeristy of Technology, Department of Electronics and Information Technologies Poland
https://orcid.org/0000-0002-3117-7998

Statistics

Abstract views: 463
PDF downloads: 339


Most read articles by the same author(s)