ResearchBenchmarksBandwidth Extension on VCTKBandwidth Extension on VCTKFollow3.6CSIGDisSR3.05923.19963.343.4804Feb 13, 2026Evaluation resultsMethodMethodLinksCSIGCBAKCOVLDisSRTarget Frequency=4kHzTarget Frequency=4kHz2026.023.62.773.19HIFI++Target Frequency=4kHzTarget Frequency=4kHz2026.023.512.73.14DisSRTarget Frequency=2kHzTarget Frequency=2kHz2026.023.222.493.03HIFI++Target Frequency=2kHzTarget Frequency=2kHz2026.023.082.262.87