The LV1100 is an audio signal-processing Bi-CMOS LSI that integrates input and output filters, a delay line (builtin memory), and a delay/reverb function with a maximum delay of 120 ms on a single chip. It also provides built-in fixed matrix (L+R, LR) and front mixing (with level and phase switching) functions. A full complement of surround modes can be easily implemented by combining these functions.