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Miniaturized Noise Generation System—A Simulation of a Simulation

In the speech recognition industry, there is an everlasting need for evaluation of products in environments imitating real use cases. A wide-spread solution is to build a setup compliant with ETSI EG 202 396-1 standard, which defines a unified artificial laboratory environment to simulate real use scenarios of products to be tested. For space and cost reduction, a method is being developed to miniaturize the standard setup and simulate its behavior in a soundproof enclosure. In order to achieve high fidelity a number of spectral and temporal qualities of sound are measured in a laboratory and replicated in a box. The performance is evaluated using metrics specific to speech recognition.

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