Back to results
US 2012/0008724 A1Published application
Nicam decoder with output resampler
AssigneeTHAT Corporation
InventorsRoger R. Darr, Matthew F. Easley, Matthew S. Barnhill
Life of this patent
Estimating the term…
Abstract
A NICAM audio signal re-sampler may include a non-linear interpolator configured to interpolate in a non-linear manner between sequential digital samples that are based on a stream of demodulated NICAM audio samples. A phase differential calculator may be included that compares phase information at different resolutions.
Claims14
A phase differential calculator comprising:
- a first phase accumulator configured to generate information indicative of the phase of a local sample clock at a first resolution;
- a clock generator configured to generate a generated clock and information indicative of the phase of the generated clock at a second resolution that is lower than the first resolution as a function of a phase comparison and in synchronism with a remote sample clock;
- and
- a phase comparator configured to generate the phase comparison based on a phase difference between the information indicative of the phase of the local sample clock and the information indicative of the phase of the generated clock.
1 more element
A NICAM audio signal re-sampler comprising a non-linear interpolator configured to interpolate in a non-linear manner between sequential digital samples that are based on a stream of demodulated NICAM audio samples.
Dependencies are inferred from the claim text.