Which direction should I point the UMIK-1?

The UMIK-1 comes with two unique calibration files: 
- 0deg: Point the microphone towards the sound source being measured. This calibration is so called on-axis calibration file.
- 90deg: Point the microphone towards the ceiling. This calibration file is only to be used for surround sound measurement (i.e. audio coming from multiple directions). For Dirac Live applications (e.g. DDRC-88A, nanoAVR DL), you should always use the 90deg file.

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