SPACE AUDIO PROCESSOR AND METHOD FOR PROVIDING SPATIAL PARAMETERS BASED ON ACOUSTIC INPUT SIGNAL

摘要

1. A spatial audio processor to provide spatial parameters (102, φ (k, n), Ψ (k, n)) based on the input audio signal (104), including a module for determining signal characteristics (108, 308, 408, 508, 608, 808, 908, which is configured to determine the signal characteristic (110, 710, 810) of the input audio signal (104), while the input audio signal (104) includes at least one directional component; and a controlled parameter determination module (106, 306, 406, 506, 606, 606a, 606b, 806, 906) for calculating spatial parameters (102, φ (k, n), Ψ (k, n)) for the input audio signal (10 4) in accordance with the rule for calculating the variable spatial parameter; in this case, the controlled parameter determination module (106. 306, 406, 506, 606, 606a, 606b, 806, 906) is configured to modify the rule for calculating the variable spatial parameter in accordance with a certain signal characteristic ( 110, 710, 810). 2. The spatial audio processor according to claim 1, wherein the spatial parameters (102) include the direction of sound, and / or the blurriness of the sound, and / or statistical measurement of the direction of sound. The spatial audio processor according to claim 1, wherein the controlled parameter determination module (106, 306, 406, 506, 606, 606a, 606b, 806, 906) is configured to calculate spatial parameters (102, φ (k, n), Ψ (k, n)) as the parameters of directional audio coding, including the blur parameter Ψ (k, n) for the time syllable (n) and the frequency subband (k) and / or the parameter of the sound direction φ (k, n) for the time slot (n) and frequency sub-band (k), or as parameters of a spatial microphone system. 4. The spatial audio processor according to claim 1, wherein the signal characterization module (308) is configured to