sˈʌbbˈænd fˈiːdbæk kˌænsɪlˈeɪʃən ɪz ɐ tˈaɪp ʌv ɐdˈæptɪv fˈiːdbæk kˌænsɪlˈeɪʃən ðæt ɹᵻlˈaɪz lˈɛs ˌɔn kˌɑːmpjuːtˈeɪʃənz ænd ˈælɡɚɹˌɪθəmz, bˌʌt ɹˈæðɚ jˈuːsᵻz ðə sˈɪɡnəlz ɔːlɹˌɛdi ɪnðə dɪvˈaɪs tʊ ˈɑːptɪmˌaɪz ðə fˈiːdbæk kˌænsɪlˈeɪʃən.
Sub-band feedback cancellation is a type of adaptive feedback cancellation that relies less on computations and algorithms, but rather uses the signals already in the device to optimize the feedback cancellation.