A sound signal processing apparatus includes a sound acquisition unit, a processing unit, an output unit, and a control unit. The sound acquisition unit is configured to acquire sound data generated by collecting a sound from a sound-collecting target space. The processing unit is configured to execute, on the sound data acquired by the sound acquisition unit, signal processing corresponding to each of a plurality of areas included in the sound-collecting target space. The output unit is configured to output processed data generated based on the signal processing executed by the processing unit. The control unit configured to perform control such that an amount of processing performed by the processing unit does not exceed a predetermined amount of processing.