Abstract: The invention relates to a method for attaching a micromechanical microphone (1) to be used in connection with a mobile station to a substrate (2), in which a diaphragm (4) and back electrode (6) for the microphone (1) are placed within a distance of each other, wherein an air gap (7) is formed between the diaphragm (4) and the back electrode (6). An insulation ring (12) is placed between the microphone (1) and the substrate, wherein the back electrode (6), the substrate (2) and the insulation ring (12) define a back chamber (13). The microphone (1) is attached to the substrate (2) with fixing means (11a, 11b), wherein the volume (Vb) of the back chamber (13) is adjusted by adjusting the height of the fixing means (11a, 11b).