CPC G10L 25/66 (2013.01) [A61B 5/024 (2013.01); A61B 5/02405 (2013.01); A61B 5/7217 (2013.01); A61B 5/7253 (2013.01); A61B 7/04 (2013.01)] | 20 Claims |
1. An electronic system for calculating cardiovascular heartbeat information from an electronic audio signal, wherein the electronic audio signal comprises information representative of a human voice signal in the time-domain, the human voice signal comprising a vowel audio sound of a certain duration and a fundamental frequency (F0); and wherein the electronic system comprises:
a signal receiving module configured to receive the electronic audio signal;
an audio processing module configured to generate a power spectral profile of a section of the electronic audio signal, and to detect the fundamental frequency (F0) in the generated power spectral profile;
a denoising module configured to filter the received audio signal within a band around at least the detected fundamental frequency (F0) to thereby generate a denoised audio signal;
a signal transformation module configured to generate a time-domain intermediate signal that captures one or more of: a frequency, an amplitude, or phase of the denoised audio signal; and
a beat detection module configured to detect and calculate heartbeat information, within a human cardiac band, in the intermediate signal.
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