An object information acquiring apparatus comprises an irradiation unit that irradiates an object with light； a receiving unit including detection elements that receives acoustic waves generated from the object and outputs analog signals； a conversion unit that performs A/D conversion on the analog signals to generate first digital signals； a memory that stores the first digital signals； a correction unit that generates second digital signals by correcting the first digital signals using different frequency filter in accordance with a positional relation between a position in which characteristic information of the object is acquired and each of the detection elements； and an acquiring unit that acquires the characteristic information of the object based on the second digital signals.
