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For Windows Vista, and later versions of Windows, Microsoft's new Driver Test Manager (DTM) must be used for all Windows Logo submissions. This new testing framework includes an all new audio fidelity test which verifies that the system under test (SUT) provides the end user with a Universal Audio Architecture (UAA)-compliant hardware solution. This means that the system must not only conform to the relevant industry specifications supported by the UAA initiative, but it must also meet all applicable requirements outlined by the Windows Logo Program.

To ensure a Windows Vista Logo certification, OEMs and ODMs should validate their systems audio solution for UAA compliance with relevant specifications early in their design and test cycles. SEZZO Labs can help with this by providing both on-site and off-site testing, with specialized staff that can assist with audio Logo Program issues and submissions.

Microsoft's DTM, which is part of the new Windows Driver Kit (WDK), requres the use of an Audio Precision System Two analyzer for conducting all audio related testing. SEZZO Labs conducts all fidelity tests using the Audio Precsion 2722 line of analyzers.

Click here for more detailed information regarding our audio fidelity testing.

 



192 kHz digital sampling

200 kHz analog bandwidth

S-AES17 and A-weighting filters

DSP analysis of digital and analog signals

Low-distortion, hardware generated signals


To verify that the SUT meets the requirements for a high-fidelity audio playback experience it must pass the following tests:

Output Level Test - A digital full-scale signal measurement (Output Voltage requirement)
Dynamic Range Test - A noise floor measurement (w/ AES-17)
THD+N Test - A THD+N measurement (WLP Device Fidelity Requirements)
Magnitude Response Test - Measures the frequency response (Magnitude Response requirement.)
Phase Delay Test - Measures phase differences between channels of multichannel streams.


Questions? Click here for detailed information regarding our audio fidelity testing services
 
   
 
 
 
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