Audiophile encoding of digital audio data using 2-bit polarity/magnitude indicator and 8-bit scale factor for each subband

Abstract

A method, system and product are provided for loss-less encoding of a digital signal representing an audible sound. The method includes dividing the digital signal into a plurality of frames, dividing each of the plurality of frames into a plurality of subbands, and assigning each of the plurality of subbands an indicator selected from the group consisting of positive, zero, and negative, wherein the indicator selected is based on a polarity and a magnitude of the subband. The method further includes assigning each of the plurality of subbands one of a plurality of scale factors, wherein each scale factor represents a sound level range of at most two decibels, and generating a digital word for each of the plurality of frames, each digital word having a scale factor section including the scale factors for the plurality of subbands in the frame, and a sample data section including the indicators for the plurality of subbands in the frame. The system includes a sampler, a filter and control logic for performing the method. The product includes a storage medium having computer readable programmed instructions for performing the method.

Dependencies are inferred from the claim text.