Patent ID: 7561076

Claim:
A NICAM encoding method comprising: performing NICAM processing; and coupling front-end processing to the NICAM processing, wherein the front-end processing synchronizes the front-end processing and the NICAM processing with timing derived from integer divisions of a single system clock, wherein the front-end processing comprises a front-end input processing and a front-end output processing, the front-end input processing being coupled to an input of the NICAM processing and the front-end output processing being coupled to an output of the NICAM processing, and wherein the front-end input processing comprises one of: (a) use of an interpolator by factor N, a first decimator by factor M, a pre-emphasis filter, and a second decimator by factor P, wherein the interpolator couples to the first decimator, the first decimator couples to the pre-emphasis filter, and the pre-emphasis filter couples to the second decimator, or (b) use of a dual-channel analog-to-digital converter (ADC), an interpolator by factor N, a first decimator by factor M, a pre-emphasis filter, and a second decimator by factor P, wherein the ADC couples to the interpolator, the interpolator couples to the first decimator, the first decimator couples to the pre-emphasis filter, and the pre-emphasis filter couples to the second decimator.