Separable, intelligible, single channel voice communication

A computer system for audio communication, the computer system comprising:

• one or more computer processors;
• one or more computer-readable storage media, and program instructions stored on the one or more computer-readable storage media, the one or more computer processors when executing the program instructions are configured to:
• set 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;
• receive an audio signal as input to the transmitter device;
• convert a time-series waveform of the audio signal into a frequency-series waveform;
• determine that the transmitter device is set to the first subchannel of the communication channel;
• in response to determining the transmitter device is set to the first subchannel, filter 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
• transmit the audio signal from the transmitter device as the filtered frequency-series waveform through the first portion of the bandwidth of the communication channel.

A computer-implemented method for audio communication, the computer-implemented method comprising:

• setting, by a processor, a receiving 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, on the receiving device a frequency-series waveform filtered through a series of steep shoulder digital bandpass filters that are set to multiple audible frequency segments corresponding to the first subchannel;
• converting, by the processor, the frequency-series waveform to a time-series waveform;
• converting, by the processor, the time-series waveform to an audible signal consistent with the multiple audible frequency segments of the bandwidth corresponding to the first subchannel of the communication channel, wherein a respective audible frequency segment includes at least a 50 Hz bandwidth interleaved with other 50 Hz bandwidths of other subchannels within a 300 hertz to 3000 hertz audible bandwidth of the communication channel;
• and
• receiving, by the processor, the audible signal at the receiving device.