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US 2024/0404543 A1Published application
Joint far-end and near-end speech intelligibility enhancement
AssigneeRtx A/S
InventorAndreas Jonas FUGLSIG
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AssigneeRtx A/S
InventorAndreas Jonas FUGLSIG
Estimating the term…
The invention relates to a computer implemented method for generation of a speech intelligibility enhancement algorithm for a wireless two-way communication system to enhance speech intelligibility in noise at both a near-end and a far-end taking into account joint near-end and far-end noise and audio inputs at the far-end from multiple microphones to capture speech and noise. First, determining (D_SI_OT) a speech intelligibility optimization target, taking into account noise at the near-end and noise at the far-end. Next, determining (D_MVDR) a Minimum Variance Distortionless Response (MVDR) beamformer with a plurality of inputs by optimizing a cost function according to the speech intelligibility optimization target to determine a global optimum. Next, determining (D_FB_G) a set of frequency band dependent gains by optimizing a cost function according to the speech intelligibility optimization target to determine a global optimum of a concave optimization formulation. Finally, generating (G_SIE_A) the speech enhancement processing algorithm as a linear processor with the determined MVDR beamformer followed by the determined set of frequency band dependent gains. In this way, a simple technical-mathematical formulation has been achieved, and the resulting speech intelligibility enhancement is similar to related but complex prior art solutions. The resulting algorithm is suited for wireless two-way communication devices, such as intercom devices to be used in noisy environments. e.g. for firefighters, rescue personnel etc.
A computer implemented method for providing a speech enhancement processing algorithm for enhancement of speech intelligibility in a wireless two-way communication system between a far-end and a near-end, with multiple microphones at least at the far-end and at least one audio output, the method comprises
A computer program code arranged to cause, when executed on a device with a processor, causes the processor to perform steps comprising:
A wireless audio device comprising a processor system programmed to process a plurality of audio inputs for providing a speech enhancement processing algorithm, the processor configured to:
-28. (canceled)
Dependencies are inferred from the claim text.