Patent ID: 9076425
Filing Date: 2015-07-07
Classification: G10K,G10L

Abstract:
1. An apparatus for reducing digital noise of an audio signal, comprising: a clarified signal generator configured to generate a clarity improvement pattern for increasing an energy ratio of an early reflection region with respect to all reverberations for a received audio source signal, to convolve the clarity improvement pattern with the audio source signal, and to output the result of the convolution as an audio source signal to which the clarity improvement pattern has been applied; an early reflection generator configured to convolve the audio source signal convolved with the clarity improvement pattern with an early reflection pattern, and to output the result of the convolution as an early reflection signal to which the clarity improvement pattern has been applied; a late reverberation generator configured to receive the audio source signal, and to generate a late reverberation signal for attenuating digital noise of the audio source signal; and a noise attenuator configured to add the early reflection signal and the late reverberation signal to the audio source signal, and to output the result of the addition as an audio source signal from which digital noise has been attenuated.