FAQ

(Q) When I start VIN software, it gives me “Your license is not for this application” error.

A: Check your license file (license.dat) by opening it in a text editor. Make sure the license contains records for all required modules. Please review the Licensing article for additional information.

If the issue still persists, please attach the licensing file (license.dat) to the support ticket at our Service Desk

(Q) When I start VIN software, it gives me “License expired” error.

A: Please check that the licensing file (license.dat) is stored next to VoiceInspector.exe application.

If the license.dat is already in the same directory as VoiceInspector.exe and you are still receiving this error, please contact the technical support at our Service Desk.

(Q) How do you calculate SNR in Speech Quality Estimation?

A: Signal-to-Noise Ratio (SNR) is a critical metric for determining whether a speech recording is suitable for further processing by other speech technologies. Consequently, it plays an integral role in our Speech Quality Estimation. However, automating SNR calculation is a non-trivial task.

Our approach leverages the distinct statistical properties of speech and noise. Specifically, the frequency distribution of speech waveforms follows a Gamma distribution, while noise typically exhibits a Gaussian distribution. By analyzing the frequency distribution within individual frames of the signal, we can estimate the SNR.