Patent ID: 9503818
Filing Date: 2016-11-22
CPC Classification: H04R,H04S

Claim Text:
1. A method for processing microphone capsule signals of a spherical microphone array on a rigid sphere, said method comprising: converting said microphone capsule signals representing the pressure on the surface of said microphone array to a spherical harmonics or Ambisonics representation A computing per wave number k an estimation of the time-variant signal-to-noise ratio SNR(k) of said microphone capsule signals, using the average source power |P by using a time-variant Wiener filter for each order n designed at discrete finite wave numbers k from said estimation of the time-variant signal-to-noise ratio estimation SNR(k), multiplying a transfer function of said Wiener filter by an inverse transfer function of said microphone array in order to get an adapted transfer function F applying said adapted transfer function F