Apparatus and method for generating a signal environment from an audio signal, apparatus and method for a multi-audio signal channel from an audio signal, and computer program

摘要

Apparatus (100; 200; 300; 510) for generating a signal environment (132; 252, 254; 342; 512) from an audio signal (108; 208; 308; 508) comprising: means (110 ; 220; 320) for lossy compression of a spectral representation (108; 212; 316) of the audio signal to obtain a compressed representation (112; 222; 322) of the audio signal; means (122; 230; 330) for calculating a difference between the compressed representation (112; 222; 322) of the audio signal and the spectral representation (108; 212; 316) of the audio signal to obtain a representation of discrimination (122; 232; 332); and means (130, 240, 340) to provide the signal environment (132; 252, 254; 342) using the representation of discrimination; wherein the means (110; 220; 320) for lossy compression are configured to compress a spectral representation (108; 212; 316) describing a spectrogram of the audio signal (108; 208; 308; 508) for as compressed representation (112; 222; 322) a spectral representation of the compressed audio signal.