Thereâs a microphone built into each cup of the headphones that samples the ambient noise near the ear. That noise signal is fed into an electronic circuit that analyzes it and creates a mirror image of the noise, then adds the noise back into the music signal.
The job description of a manager varies from organization to organization. Here is more about what a manager does, the manager's job description. The manager's role and job description is at a pay grade or job classification level of the organization that integrates functions and departments for implementation success.
According to Theo Heimann, management has three different meanings, viz., 1  Management as a Noun : refers to a Group of Managers. 2  Management as a Process : refers to the Functions of Management i.e. Planning, Organising, Directing, Controlling, etc.  Management as a Discipline : refers to the Subject of Management.