US 12,255,671 B2
Separable, intelligible, single channel voice communication
Hyman David Chantz, Scarsdale, NY (US); Robert Lynch, Bedminster, NJ (US); and Elijah Swift, Poughkeepsie, NY (US)
Assigned to International Business Machines Corporation, Armonk, NY (US)
Filed by INTERNATIONAL BUSINESS MACHINES CORPORATION, Armonk, NY (US)
Filed on Mar. 16, 2023, as Appl. No. 18/122,272.
Prior Publication US 2024/0313807 A1, Sep. 19, 2024
Int. Cl. H04B 1/00 (2006.01)
CPC H04B 1/001 (2013.01) [H04B 1/0075 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A method of audio communication comprising:
setting, by a processor, a transmitter device to a first subchannel of a communication channel, wherein the first subchannel comprises a first portion of a bandwidth of the communication channel;
receiving, by the processor, an audio signal as input to the transmitter device;
converting, by the processor, a time-series waveform of the audio signal into a frequency-series waveform;
determining, by the processor, that the transmitter device is set to the first subchannel;
in response to determining the transmitter device is set to the first subchannel, filtering, by the processor, the frequency-series waveform through a series of steep shoulder digital bandpass filters set to bandpass the first portion of the bandwidth of the communication channel; and
transmitting, by the processor and the transmitter device, the audio signal as the filtered frequency-series waveform through the first portion of the bandwidth of the communication channel.