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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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https://hal.inria.fr/hal-01288219
Contributor : Ngoc Duong <>
Submitted on : Tuesday, March 15, 2016 - 11:03:21 AM
Last modification on : Wednesday, November 23, 2016 - 10:57:02 AM
Long-term archiving on: : Thursday, June 16, 2016 - 10:38:38 AM

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  • HAL Id : hal-01288219, version 1

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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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