WWSNR

WWSNR calculates audio signal to noise ratio (SNR). It reads two files: Signal file and Signal+Noise file.

How to use

Download program from following location:
https://sourceforge.net/projects/playpcmwin/files/others/WWSNR101.zip/download

Specify signal file and signal+noise file (WAV or FLAC) using browse button and press Process to calculate SNR.

A-weighting and ITU-R 468-4 weighting is available.

Notes

Signal file and signal+noise file should be the same duration (the same sample count).

Signal file and signal+noise file should be level-matched and in-phase : existence of any phase difference results worse SNR value.

SNR calculation summation is performed from the start to the end of file.

44.1kHz, 48kHz, 88.2kHz, 96kHz, 176.4kHz, 192kHz, 352.8kHz, 384kHz, 705.6kHz (WAV), and 768kHz (WAV) PCM sound files are supported.

WWSNR uses straightforward method to calculate SNR. To measure performance of ADC, different method is used. Please refer this document :
http://www.analog.com/media/en/training-seminars/tutorials/MT-003.pdf

Uninstall

Delete WWSNR programs to uninstall.

License

MIT License

Source code

https://sourceforge.net/p/playpcmwin/code/HEAD/tree/PlayPcmWin/WWSNR/MainWindow.xaml.cs

Changelog

Version 1.0.1

• Added 352.8kHz, 384kHz, 705.6kHz (WAV), and 768kHz (WAV) support.

Version 1.0.0

• Initial release