Patent ID: 11935550
Assignee: THE ADT SECURITY CORPORATION
Field: Computer technology (Electrical engineering)
Classification: CPC G  H | IPC G

Claim 2:
3. A system comprising:
an audio compression device comprising processing circuitry configured to:
receive a plurality of pulse code modulated (PCM) samples encoded with N bits per each of the plurality of PCM samples;
quantize the plurality of PCM samples with M bits per each of the plurality of PCM samples to generate a plurality of quantized PCM samples, M being less than N;
determine a plurality of time windows for the plurality of quantized PCM 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 PCM 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 based on a difference from a previous sample to the 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.