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(11) | EP 4 325 895 A3 |
| (12) | EUROPEAN PATENT APPLICATION |
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| (54) | SPECTRAL CORRECTION USING SPATIAL CALIBRATION |
| (57) Example techniques may involve performing aspects of a spectral calibration using
an applied spatial calibration. An example implementation may include receiving data
representing spatial filters that correspond to respective playback configurations.
The implementation may also involve causing the audio drivers to output calibration
audio that is divided into a repeating set of frames, the set of frames including
a respective frame for each playback configuration. Causing the audio drivers to output
the calibration audio may involve causing an audio stage to apply, during each frame,
the spatial filter corresponding to the respective playback configuration. The implementation
may also include receiving data representing spectral filters that correspond to respective
playback configurations, the spectral filters based on the calibration audio output
by the audio drivers. When playing back audio content in a given playback configuration,
the audio stage may apply a particular spectral filter corresponding to that configuration.
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