Czasopismo | ELEKTRONIKA - KONSTRUKCJE, TECHNOLOGIE, ZASTOSOWANIA | Rocznik 2017 - zeszyt 4

Intelligent equalizer solution employing music genre and the room characteristics analysis

10.15199/13.2017.4.3

nr katalogowy: 105319
10.15199/13.2017.4.3

The paper presents an intelligent equalizer solution based on room acoustic conditions and music genre analysis. A series of acoustic characteristic measurements are performed for checking the concept proposed. White noise (reference signal) and audio excerpts belonging to six music genres are utilized as excitation signals in measurements. This results in registration of frequency responses of rooms and reverberation times. Signals recorded in the listener’s receiver position are used to obtain room equalization characteristics. Pilot subjective tests are performed to obtain information on listeners’ preference on spectral characteristics of reproduced music depending on music genre. Keywords: Room acoustic equalization, LUFS (Loudness Unit, referenced to Full Scale), music genre.In recent years rapid development of mobile technologies is observed. They are growing in functionality and computing power. This results in wider availability of mobile services and improvement of performance in commonly used handheld devices. Moreover the users, attracted to high-definition standards, would like to obtain high quality of the multimedia content, which cannot always be achieved even if computational capabilities of mobile devices enable this. The ability to provide high-quality reception of the content playback on mobile devices is a difficult task because changing acoustical conditions is very demanding for the algorithm which task is to follow these changes. There are known ways to reduce the effect of noise on the quality of the content playback. However, they are limited mostly to the removal of additional tones from the signal that occurred in the signal. Active Noise Cancelation (ANC) is an example of methods that work this way, i.e. noise that appears in an environment is detected and subtracted from the final signal which positively affects audio heard by the listener. The ANC method is perfectly suited for place[...]

Bibliografia

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