Patent ID: 9159337
Filing Date: 2015-10-13
Classification: G10L

Abstract:
1. Apparatus for generating a high frequency audio signal, comprising: an analyzer for analyzing an input signal to determine a transient information, wherein a first portion of the input signal has associated the transient information, and a second later portion of the input signal does not comprise the transient information; a spectral converter for converting the input signal into an input spectral representation; a spectral processor for processing the input spectral representation to generate a processed spectral representation comprising values for higher frequencies than the input spectral representation; and a time converter for converting the processed spectral representation to a time representation, wherein the spectral converter or the time converter are controllable to perform a frequency domain oversampling for the first portion of the input signal having associated the transient information and to not perform the frequency domain oversampling for the second later portion of the input signal or to perform a frequency domain oversampling with a smaller oversampling factor compared to the first portion of the input signal.