| 摘要 |
A speech processing apparatus acquires pseudo speech from a mixture of sound including desired speech and noise. A first microphone inputs a first mixture sound, including desired speech and noise, and outputs a first mixture signal. A second microphone opens to the sound space and is disposed at a focus position of an interface, that is part of a boundary of the sound space and has one of a quadratic surface shape and a pseudo surface shape approximating a quadratic surface, inputs a second mixture sound including the desired speech reflected by the interface and the noise reflected by the interface at a ratio different from the first mixture sound, and outputs a second mixture signal. A noise suppression circuit suppresses an estimated noise signal based on the first mixture signal and the second mixture signal and outputs a pseudo speech signal. |
