Typhoon frequency set when muting the device (kHz)

configname: CONFIG_RADIO_TYPHOON_MUTEFREQ

Linux Kernel Configuration
└─>Device Drivers
└─>Multimedia support
└─>Media drivers
└─>Radio Adapters
└─>ISA radio devices
└─>Typhoon frequency set when muting the device (kHz)
In linux kernel since version 2.6.20 (release Date: 2007-02-04)  
Enter the frequency used for muting the radio. The device is never
completely silent. If the volume is just turned down, you can still
hear silent voices and music. For that reason, the frequency of the
radio device is set to the frequency you can enter here whenever
the device is muted. There should be no local radio station at that
frequency.