USE OF A FLUID FLOW MEASURING DEVICE AS A MICROPHONE AND SYSTEM COMPRISING SUCH A MICROPHONE

摘要

Use of a fluid flow measuring device as a microphone for detecting acoustic waves, said fluid flow measuring device comprising at least one heating element (H), at least a first temperature sensor (S1) arranged at a first predetermined spacing (r1) from the heating element (H), for generation of a first electrical signal which corresponds to the temperature (T1) of the first temperature sensor (S1), wherein the predetermined first spacing (r1) is less than 300 mu m.