Patent ID: 9088858
Filing Date: 2015-07-21
Classification: H04S

Abstract:
1. A method of rendering depth in an audio output signal, the method comprising: receiving a plurality of audio signals; identifying first depth steering information from the audio signals at a first time, the first depth steering information responsive to a first decorrelation of the audio signals; applying nonlinear processing to the first depth steering information to produce second depth steering information, the nonlinear processing configured to accentuate a magnitude of the first depth steering information with a greater than linear increase that nonlinearly emphasizes the first decorrelation of the audio signals such that relatively faster changes in the magnitude of the first decorrelation are emphasized more than relatively slower changes in the magnitude of the first decorrelation; identifying subsequent depth steering information from the audio signals at a second time; decorrelating, by one or more processors, the plurality of audio signals by a first amount that depends at least partly on the second depth steering information to produce first decorrelated audio signals, wherein said decorrelating comprises applying greater decorrelation responsive to the second depth steering information being relatively higher and applying less decorrelation responsive to the second depth steering information being relatively lower; outputting the first decorrelated audio signals for playback to a listener; subsequent to said outputting, decorrelating the plurality of audio signals by a second amount different from the first amount, the second amount depending at least partly on the subsequent depth steering information to produce second decorrelated audio signals; and outputting the second decorrelated audio signals for playback to the listener.