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.
The probable origin of the word manager comes from the Latin manus, meaning hand. A good manager provides the necessary hand, guiding others. The Italian maneggiare means to control, and was especially used with reference to training horses, a job for which certain managers you've worked for might be better suited.