| HHAN-01 | Transducer Signal Port Location Key | Application Note | 
                        
                            | AN-02 | Direct mounting considerations for FG series cylindrical microphone | Application Note | 
                        
                            | AN-03 | The measurement and suppression of RF interference from TDMA phones | Tech Specs | 
                        
                            | AN-04 | Directional microphone applications | Application Note | 
                        
                            | AN-06 | Ferrofluid damped ED receivers | Application Note | 
                        
                            | AN-07 | Ferrofluid damped receiver part numbering system | Application Note | 
                        
                            | AN-08 | HC series high-output receivers | Application Note | 
                        
                            | AN-09 | Thin Mic family microphones | Application Note | 
                        
                            | AN-10 | Transducer warranty date code numbering system | Application Note | 
                        
                            | AN-11 | VEF Vibration Isolation receivers | Application Note | 
                        
                            | AN-13 | Soldering to Knowles Transducers | Application Note | 
                        
                            | AN-14 | Marking of Microphone Pairs | Application Note | 
                        
                            | AN-16 | A Passive Current Source for Two-Wire Microphones | Application Note |