[Bink Audio] - Bink not playing back wave files with 8000Hz Sample Rate

Wav files with 8000Hz sample rates can be imported into the editor, but fail to play with the Bink compression setting. PCM, ADPCM, and Vorbis work as expected. 

LogAudioDerivedData: Warning: Cooking sound failed: SoundWave /Game/Developers/funky_groove_stereo_8000Hz_16b.funky_groove_stereo_8000Hz_16b 

8000Hz files play back with Bink in Release-5.0 without issue. This appears to be a recent regression.

1) Open any project
2) Import a .wav file with a 8000Hz sample rate (see attached file)
3) Play the file in the content browser

Expected Result:
 File plays

Actual Result:
 Sound fails to play