Noise suppression

A noise suppressor for suppressing noise in a first microphone signal, the noise suppressor comprising:

• a first transformer for generating a first frequency domain signal from a frequency transform of a first microphone signal, the first frequency domain signal being represented by time frequency tile values;
• a second transformer for generating a second frequency domain signal from a frequency transform of a second microphone signal, the second frequency domain signal being represented by time frequency tile values;
• a gain unit for determining time frequency tile gains as a non-negative monotonic function of a difference measure being indicative of a difference between a first monotonic function of a magnitude time frequency tile value of the first frequency domain signal and a second monotonic function of a magnitude time frequency tile value of the second frequency domain signal;
• and
• a scaler for generating an output frequency domain signal by scaling time frequency tile values of the first frequency domain signal by the time frequency tile gains;
• the noise suppressor further comprising:
• a designator for designating time frequency tiles of the first frequency domain signal as speech tiles or noise tiles;
• and
• the gain unit is arranged to determine the time frequency tile gains in response to the designation of the time frequency tiles of the first frequency domain signal as speech tiles or noise tiles such that a lower gain value for a time frequency tile gain of a time frequency tile is determined when the time frequency tile is designated as a noise tile than when the time frequency tile is designated as a speech tile.