Patent ID: 7317958
Filing Date: 2008-01-08
Classification: G10H

Abstract:
1. A computer readable medium encoded with computer executable instructions comprising: a first set of executable instructions to receive digital audio signal frames wherein each digital audio signal frame has a set of specified frequency values expressed as a bit sequence; a second set of executable instructions to Re-Map said bit sequence to represent lower frequencies with more significant bits and higher frequencies with less significant bits; and a third set of executable instructions to facilitate additive synthesis of said digital audio signal frames in a reduced-precision recursive digital oscillator wherein said recursive digital oscillator generates frequency f lying in the range from zero to one-half of a sampling frequency f and wherein said Re-Mapping biases the generating frequency of said oscillator, whereby ε is represented by an unsigned mantissa, m, combined with an unsigned exponent, e, biased so that the actual represented value is ε=2