AES Store

Journal Forum

Audibility of a CD-Standard A/DA/A Loop Inserted into High-Resolution Audio Playback - September 2007
10 comments

Reflecting on Reflections - June 2014
1 comment

Quiet Thoughts on a Deafening Problem - May 2014
1 comment

Access Journal Forum

AES E-Library

Spectral Analysis of Heart Sounds in Children

Spectral analysis of the first and second heart sound in 69 normal children varying in age from newborn to eighteen years was done to determine the normal relationship between intensity of sound (measured in decibels) with the frequency octave. The frequency octaves used had center frequencies of 31.5, 63, 125 and 250 Hz. With these normal values established, 12 children with primary cardiomyopathies were studied with spectral phonocardiography to determine if various pathologies are reflected in changes in the frequency contents of the heart sounds. Preliminary evidence in adults, formulated by others, and now in children, compiled by us, indicates that the heart sounds are indeed quite effected by the mass and elasticity of the oscillating ventricles. As this technique is refined in the future, the diagnostic value in a modern clinical setting of spectral analysis may even be overshadowed by the value of using spectral techniques as part of mass screening programs for the detection of heart disease in children and hence the early treatment of as yet undiagnosed pathology.

Authors:
Affiliation:
AES Convention: Paper Number:
Publication Date:

Click to purchase paper or login as an AES member. If your company or school subscribes to the E-Library then switch to the institutional version. If you are not an AES member and would like to subscribe to the E-Library then Join the AES!

This paper costs $20 for non-members, $5 for AES members and is free for E-Library subscribers.

Learn more about the AES E-Library

E-Library Location:

Start a discussion about this paper!


 
Facebook   Twitter   LinkedIn   Google+   YouTube   RSS News Feeds  
AES - Audio Engineering Society