| 摘要 |
A speech communications unit is provided. The speech communications unit includes a speech processor for receiving an input speech signal having a periodic noise interferer (50, 70), the speech processor being operably coupled to a noise determining means (52, 72) for determining an amplitude of the periodic noise interferer a gaussian noise generator (54, 74) for generating a known gaussian noise sequence and combining the speech signal with the known gaussian noise sequence to provide a resultant signal, and inputting the resultant signal into a noise suppression procedure to provide a noise suppressed speech signal. The speech processor determines an amplitude level of the suppressed gaussian noise and subtracts a respective level of suppressed gaussian noise from the resultant signal thereby reducing the periodic noise content in the speech signal. <IMAGE> |
