A beamforming microphone system comprising: a plurality of microphone units; a signal processing unit configured to process a sound pickup signal from each of the plurality of microphone units at each predetermined time; and a storage configured to associate, for each sound pickup area where the plurality of microphone units is able to pick up sound as a sound signal, sound pickup area information indicating a sound pickup area with individual-sound-pickup-area position information indicating a position of at least one of individual sound pickup areas freely set within the sound pickup area, and store the associated information, wherein the signal processing unit includes: a position information identification unit configured to identify sound source position information indicating a sound source position of a sound source in an individual sound pickup area of the at least one of individual sound pickup areas, based on the sound pickup signal from each of the plurality of microphone units; a signal generation unit configured to generate the sound signal corresponding to the sound from the sound source position, based on the sound pickup signal from each of the plurality of microphone units; and a channel assignment unit configured to assign, to the individual sound pickup area, one output channel from which the sound signal is output, from among a plurality of output channels, based on the individual-sound-pickup-area position information indicating the individual sound pickup area to which the sound source position belongs. a plurality of microphone units; a signal processing unit configured to process a sound pickup signal from each of the plurality of microphone units at each predetermined time; and a storage configured to associate, for each sound pickup area where the plurality of microphone units is able to pick up sound as a sound signal, sound pickup area information indicating a sound pickup area with individual-sound-pickup-area position information indicating a position of at least one of individual sound pickup areas freely set within the sound pickup area, and store the associated information, wherein the signal processing unit includes: a position information identification unit configured to identify sound source position information indicating a sound source position of a sound source in an individual sound pickup area of the at least one of individual sound pickup areas, based on the sound pickup signal from each of the plurality of microphone units; a signal generation unit configured to generate the sound signal corresponding to the sound from the sound source position, based on the sound pickup signal from each of the plurality of microphone units; and a channel assignment unit configured to assign, to the individual sound pickup area, one output channel from which the sound signal is output, from among a plurality of output channels, based on the individual-sound-pickup-area position information indicating the individual sound pickup area to which the sound source position belongs. a position information identification unit configured to identify sound source position information indicating a sound source position of a sound source in an individual sound pickup area of the at least one of individual sound pickup areas, based on the sound pickup signal from each of the plurality of microphone units; a signal generation unit configured to generate the sound signal corresponding to the sound from the sound source position, based on the sound pickup signal from each of the plurality of microphone units; and a channel assignment unit configured to assign, to the individual sound pickup area, one output channel from which the sound signal is output, from among a plurality of output channels, based on the individual-sound-pickup-area position information indicating the individual sound pickup area to which the sound source position belongs.