download the audio file 14.wav.gz

hints :

• No need to gunzip this file since baudline can automatically uncompress files.
• Setup baudline to be a Web Browser helper application as described in the FAQ.
• Use the Color Aperture window to focus and maximize the color resolution to the -94 dB to -136 dB range. 
• Make an accurate Hz measurement of the main fundamental frequency.

Click here for the answer.