KWCH 12 is now testing the secondary audio program (SAP) on selected CBS programs.
The secondary audio is a descriptive video service (DVS) in English which makes visual media more accessible to people who are blind or otherwise visually impared.
CBS currently provides descriptive video on four programs: CSI, Criminal Minds, NCIS & NCIS Los Angeles.
Some other CBS programs have Spanish language dialogue on the SAP channel including the program The Bold and The Beautiful.
The FCC will soon require broadcast stations to pass SAP if a program provider includes that service with their program.
If you're listening to the secondary audio during programs, you can return to regular program audio by turning off the SAP feature on your TV or your remote control. The remote control may designate the button as MTS which stands for multichannel television sound.