Method and device for applying dynamic range compression to a higher order ambisonics signal

Abstract A method and an apparatus for applying dynamic range compression (DRC) to a Higher Order Ambisonics (HOA) signal in the time domain is disclosed. The method comprises receiving the HOA signal and one or more DRC gains Barc = 91, --,9(N+ )2 T , wherein N is an HOA order of the HOA signal; an...

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Bibliographische Detailangaben
Hauptverfasser:	KEILER, Florian, BOEHM, Johannes
Format:	Patent
Sprache:	eng
Schlagworte:	ACOUSTICS ELECTRIC COMMUNICATION TECHNIQUE ELECTRICITY MUSICAL INSTRUMENTS PHYSICS SPEECH ANALYSIS OR SYNTHESIS SPEECH OR AUDIO CODING OR DECODING SPEECH OR VOICE PROCESSING SPEECH RECOGNITION STEREOPHONIC SYSTEMS
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Beschreibung
Zusammenfassung:	Abstract A method and an apparatus for applying dynamic range compression (DRC) to a Higher Order Ambisonics (HOA) signal in the time domain is disclosed. The method comprises receiving the HOA signal and one or more DRC gains Barc = 91, --,9(N+ )2 T , wherein N is an HOA order of the HOA signal; and applying the one or more DRC gains Barc to the HOA signal based on: Cdrc = DL'diag(grc)DL c wherein c is a vector of one time sample of HOA coefficients (c E R(N+1) 2 x1) of the HOA signal, and wherein DL E R(N+1) 2 x (N+1) 2 and its inverse DL 1 are matrices related to a Discrete Spherical Harmonics Transform (DSHT) optimized for DRC purposes.