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AUDIO ZOOM FOR SMARTPHONES BASED ON MULTIPLE ADAPTIVE BEAMFORMERS

Abstract

Some recent smartphones have offered the so-called audio zoom feature which allows to focus sound capture in the front direction while attenuating progressively surrounding sounds along with video zoom. This paper proposes a complete implementation of such function involving two major steps. First, targeted sound source is extracted by a novel approach that combines multiple adaptive beam-formers having different look directions with a post-processing algorithm. Second, spatial zooming effect is created by leveraging the microphone signals and the enhanced target source. Subjective test with real-world audio recordings using a mock-up simulating an usual shape of the smartphone confirms the rich user experience obtained by the proposed system.
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Dates and versions

hal-01288219 , version 1 (15-03-2016)

Identifiers

  • HAL Id : hal-01288219 , version 1

Cite

Ngoc Q. K. Duong, Pierre Berthet, Sidkieta Zabre, Michel Kerdranvat, Alexey Ozerov, et al.. AUDIO ZOOM FOR SMARTPHONES BASED ON MULTIPLE ADAPTIVE BEAMFORMERS. 13th International Conference on Latent Variable Analysis and Signal Separation, Feb 2017, Grenoble, France. ⟨hal-01288219⟩
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