US 12,308,038 B2
Audio compression for low overhead decompression
Andrew P. Weir, Malvern, PA (US)
Assigned to The ADT Security Corporation, Boca Raton, FL (US)
Filed by The ADT Security Corporation, Boca Raton, FL (US)
Filed on Feb. 7, 2024, as Appl. No. 18/435,725.
Application 18/435,725 is a continuation of application No. 18/193,761, filed on Mar. 31, 2023, granted, now 11,935,550.
Prior Publication US 2024/0331710 A1, Oct. 3, 2024
Int. Cl. G10L 19/00 (2013.01); G10L 19/022 (2013.01); G10L 19/032 (2013.01)
CPC G10L 19/032 (2013.01) [G10L 19/022 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A system comprising:
an audio compression device comprising processing circuitry configured to:
receive a plurality of samples;
quantize the plurality of samples to generate a plurality of quantized samples;
determine a plurality of time windows for the plurality of quantized samples;
determine a first number of delta bits and a first sample count for a first time window of a plurality of time windows, the first time window comprising a first group of time-domain consecutive samples of the plurality of quantized samples according to the first sample count;
for each sample of the first group of time-domain consecutive samples, encode the sample into a corresponding set of delta bits using the first number of delta bits where each delta bit of the first number of delta bits corresponds to a computed difference between a respective previous quantized sample and the quantized sample being encoded to generate a first stream of delta bits; and
encode the first sample count and the first number of delta bits in a corresponding first header for the first time window.