Patent ID: 8977541
Filing Date: 2015-03-10
Classification: G10L

Abstract:
1. A speech processing apparatus comprising: an acquisition unit which acquires frequency domain coefficients of speech, signals of channels which are generated from speech signals which are speech time domain signals of a plurality of channels, and the number of which is less than a plurality of channels, and a parameter representing a relationship between the plurality of channels; a first transform unit which transforms the frequency domain coefficients acquired by the acquisition unit, into first time domain signals; a second transform unit which transforms the frequency domain coefficients acquired by the acquisition unit, into second time domain signals; and a synthesis unit which generates the speech signals of the plurality of channels by synthesizing the first time domain signals and the second time domain signals using the parameter, wherein a base of transform performed by the first transform unit and a base of transform performed by the second transform unit are orthogonal.