Intel Corporation

Intel Corportation

Damian Koszewski

Przemyslaw Maziewski

Jan Banas

Piotr Klinke

Pawel Trella

Pawel Pach

Adam Kupryjanow

Paweł Trella

Paweł Pach

Kuba Łopatka

A method of audio device performance testing generates virtual audio device data packages.

Method and system of audio device performance testing

Apparatus, systems, methods, and articles of manufacture are disclosed for acoustic signal processing adaptive to microphone distances. An example system includes a microphone to convert an acoustic signal to an electrical signal and one or more processors to: estimate a distance between a source of the acoustic signal and the microphone; select a signal processing mode based on the distance; and process the electrical signal in accordance with the selected processing mode.

Acoustic signal processing adaptive to user-to-microphone distances

Techniques are provided for audio capture path evaluation of microphones incorporated into a device under test (DUT). A methodology implementing the techniques according to an embodiment includes estimating impulse responses (IRs) of the DUT microphones based on a comparison of a test audio signal received through the DUT microphones, at a selected measurement angle, to the test audio signal received through a reference microphone. The method also includes calculating group delays for the DUT microphones based on phase responses of the estimated IRs and calculating an average of the group delays. The method further includes calculating a distance, projected onto the measurement angle, between the DUT microphones and a geometric center of the DUT microphones. The distance is calculated as a product of the speed of sound and a difference between the average delay and the group delays for the DUT microphones. The process is repeated for additional measurement angles.

Open-loop multichannel audio impulse response measurement and capture path evaluation

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Gdansk, Poland

Damian Koszewski