CPC H04R 3/02 (2013.01) [G10K 11/02 (2013.01)] | 45 Claims |
1. Impedance matching device for matching a characteristic acoustic impedance comprising:
an impedance matching body comprising a first side and an opposite second side,
the impedance matching device being configured to match a characteristic acoustic impedance of a medium contacted on the second side to a characteristic acoustic impedance of a sound transducer contacted on the first side;
wherein the impedance matching body comprises microstructures comprising structural extents of at most 500 nm along at least one spatial direction
wherein the microstructures are formed to comprise a first impedance matching material, wherein a second impedance matching material is disposed in intermediate regions between the microstructures; or
wherein the impedance matching body is formed in several layers comprising at least a first layer comprising a first layer characteristic impedance and a second layer comprising a second layer characteristic impedance different from the first layer characteristic impedance.
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