In summary, ST’s MEMS microphones use MEMS manufacturing technology that was developed for their motion MEMS devices such as accelerometers and gyroscopes. ST has unique packaging technology and high performance sensors that allow them to offer microphones with a high signal and noise ratio and wide frequency response. The frequency response is flat over the entire audio band, 20Hz to 20kHz. Another ST advantage is a large MEMS manufacturing capacity which means they can respond quickly to changes in volume, and have a cost-efficient manufacturing operation offering competitive pricing.