A method of adaptively generating a directional output signal from sound received by at least two microphones arranged as microphone array, said method comprising: transforming the sound received by each of said microphones and represented by analog-to-digital converted time-domain signals provided by each of said microphones into corresponding complex-valued frequency-domain microphone signals each having a frequency component value for each of a plurality of frequency components; calculating from the complex-valued frequency-domain microphone signals a Beam Focus Spectrum, said Beam Focus Spectrum comprises, for each of the plurality of frequency components, a time-dependent, real-valued attenuation factor, by: calculating an Adaptive Spectrum as quotient of moving temporal averages of complex-valued products of the frequency-domain microphone signals; calculating, for each of the plurality of frequency components, a real-valued Beam Spectrum value from the complex-valued frequency-domain microphone signals by means of microphone-specific, complex-valued Transfer Functions being calculated from said Adaptive Spectrum, wherein, for each of the plurality of frequency components, said Beam Spectrum value is an argument of a Characteristic Function with values between zero and one, and providing said Beam Focus Spectrum from the Beam Spectrum values for a Beam Focus Direction; multiplying, for each of the plurality of frequency components, said attenuation factor with the frequency component value of the complex-valued frequency-domain microphone signal of one of said microphones to obtain a directional frequency component value; and forming a frequency-domain directional output signal from the directional frequency component values for each of the plurality of frequency components. transforming the sound received by each of said microphones and represented by analog-to-digital converted time-domain signals provided by each of said microphones into corresponding complex-valued frequency-domain microphone signals each having a frequency component value for each of a plurality of frequency components; calculating from the complex-valued frequency-domain microphone signals a Beam Focus Spectrum, said Beam Focus Spectrum comprises, for each of the plurality of frequency components, a time-dependent, real-valued attenuation factor, by: calculating an Adaptive Spectrum as quotient of moving temporal averages of complex-valued products of the frequency-domain microphone signals; calculating, for each of the plurality of frequency components, a real-valued Beam Spectrum value from the complex-valued frequency-domain microphone signals by means of microphone-specific, complex-valued Transfer Functions being calculated from said Adaptive Spectrum, wherein, for each of the plurality of frequency components, said Beam Spectrum value is an argument of a Characteristic Function with values between zero and one, and providing said Beam Focus Spectrum from the Beam Spectrum values for a Beam Focus Direction; multiplying, for each of the plurality of frequency components, said attenuation factor with the frequency component value of the complex-valued frequency-domain microphone signal of one of said microphones to obtain a directional frequency component value; and forming a frequency-domain directional output signal from the directional frequency component values for each of the plurality of frequency components. calculating an Adaptive Spectrum as quotient of moving temporal averages of complex-valued products of the frequency-domain microphone signals; calculating, for each of the plurality of frequency components, a real-valued Beam Spectrum value from the complex-valued frequency-domain microphone signals by means of microphone-specific, complex-valued Transfer Functions being calculated from said Adaptive Spectrum, wherein, for each of the plurality of frequency components, said Beam Spectrum value is an argument of a Characteristic Function with values between zero and one, and providing said Beam Focus Spectrum from the Beam Spectrum values for a Beam Focus Direction; multiplying, for each of the plurality of frequency components, said attenuation factor with the frequency component value of the complex-valued frequency-domain microphone signal of one of said microphones to obtain a directional frequency component value; and forming a frequency-domain directional output signal from the directional frequency component values for each of the plurality of frequency components.