US 11,721,358 B2
System and method for calculating cardiovascular heartbeat information from an electronic audio signal
Carlos Agell, Eindhoven (NL); Evelien Hermeling, Soerendonk (NL); and Vojkan Mihajlovic, Eindhoven (NL)
Assigned to Stichting IMEC Nederland, Eindhoven (NL)
Filed by Stichting IMEC Nederland, Eindhoven (NL)
Filed on Jun. 17, 2020, as Appl. No. 16/903,895.
Claims priority of application No. 19180559 (EP), filed on Jun. 17, 2019.
Prior Publication US 2020/0395040 A1, Dec. 17, 2020
Int. Cl. A61B 5/00 (2006.01); G10L 25/66 (2013.01); A61B 5/024 (2006.01); A61B 7/04 (2006.01)
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
OG exemplary drawing
 
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.