There is only one file type that uses the .VQF extension:
TwinVQ Audio File
Audio format developed by the Nippon Telegraph and Telephone Corporation (NNT Labs); uses transform-domain weighted interleaved vector quantization to compress audio data; can be encoded in 80, 96, 112, 128, 160, and 192 kbps bitrates.
The VQF format has also been marketed by Yamaha under the name "SoundVQ."
Updated: May 26, 2007