Project of the laboratory stand for the measurement of noise of microphones

Abstract

this project will be focused in other type of noise that is called electronic noise. This noise is a characteristic of all electronic circuits. Electronic noise can be defined as undesirable electrical signals, which distort or interfere with an original signal. Noise could be transient or constant. This noise is the responsible for the distortion in the sound when we listen to the radio or for the ¿snow¿ that we could watch in the analog televisions. It can be produced by many sources: temperature of the circuit, random statistical fluctuations of the electric current, the random trapping and release of charge carriers at thin film interfaces¿ [1] In addition, this project will be focused in electronic noise in microphones. There are many different types of microphones and each one has different features. Because of this, each microphone has a different response to the noise.