It is a different story for the competitors’ top-port microphones. For a top-port microphone the sound inlet is moved from the bottom of the package to the top of the package. The competition mounts the sensor in the same location on the bottom of the package, resulting in a large front chamber and a small back chamber. This hurts performance in terms of sensitivity, signal-noise ratio, and frequency response. This is the reason bottom-port microphones have traditionally had better performance than top-port microphones, causing concern for customers that prefer top-port microphones. It is easier to protect the microphone from contamination during the assembly process or manufacturing process, plus there are instances where a top-port microphone makes more sense in an application. However, users like the better performance of the bottom-port microphones and they have had to make a choice between performance or manufacturability.