Patent ID: 11877884
Assignee: SPARROW ACOUSTICS INC.
Field: Measurement (Instruments)
Classification: CPC A  G | IPC A  G

Claim 0:
1. A method of time-domain processing of a waveform signal for generating a modified waveform signal, the waveform signal being representative of bodily sounds, the method executable by an electronic device having a processor, the waveform signal being available to the processor, the method comprising:
filtering, by the processor, employing one or more cut-off frequency values, the waveform signal for generating a first portion of the waveform signal and a second portion of the waveform signal, the first portion being in a first frequency range, the second portion being in a frequency range that is inside a human-audible frequency range;
acquiring, by the processor, a frequency shift value indicative of a frequency range by which the first portion is to be shifted to frequencies above the first frequency range;
generating, by the processor, a modulated signal using the first portion and a modulation signal, the modulation signal having a frequency equal to the frequency shift value and a time-length equal to a time-length of the waveform signal,
the modulated signal comprising a first frequency portion being in a frequency range that is above the frequency shift value and a second frequency portion being in a frequency range that is below the frequency shift value,
the one or more cut-off frequency values having been determined so that the first frequency portion and the second frequency portion are in substantially non-overlapping frequency ranges of the modulated signal,
the first frequency portion being a modified representation of the first portion of the waveform signal, the frequency range of the first frequency portion being inside the human-audible frequency range; and

generating, by the processor, the modified waveform using the first frequency portion of the modulated signal; and
triggering, by the processor, generation of sound representative of the modified waveform signal for a human operator.