Heart Sounds

This website provides several types of learning resources for heart auscultation. We offer courses, reference guides and repetition training. Each of these resources is described below. If you are a new visitor, we generally recommend starting with the Heart Sounds Lessons, moving from the normal cardiac sounds (mini) course through murmurs and then congenital abnormalities.


Cardiac Auscultation Reference Guide

Our auscultation reference guide includes over a hundred heart sounds, both real and simulated. Use these buttons to view sounds by auscultation area.










Heart Sounds Lessons

Learn cardiac auscultation by taking our free courses. These courses cover abnormal heart sounds including heart murmurs, third (S3) and fourth (S4) heart sounds and congenital conditions. Learn these sounds by selecting a topic from the table of contents below. If you are new to cardiac auscultation, we recommend this one page Introduction to Heart Sounds and Murmurs.


Normal Heart Sounds
This course will teach you about auscultation of normal heart sounds including split and unsplit second heart sounds heard at various heart rates and auscultation points.
Lesson List
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First Heart Sounds
This course will teach you about first heart sound auscultation. Before you take this course you should have finished the Normal Heart Sounds course and feel comfortable with your ability to listen and recognize normal heart sounds.
Lesson List


Second Heart Sounds
This course will teach you about the second heart sound. Before you take this course you should have finished the Normal Heart Sound and First Heart Sound courses. You should feel comfortable with the material presented.
Lesson List


Extra Heart Sounds (S3 and S4)
This course will teach you about auscultation of the third and fourth heart sounds. Before you take this course you should have finished the Normal, First, and Second Heart Sound courses. You should feel comfortable with the material presented.
Lesson List


Systolic Murmurs
This course will teach you about Systolic Murmurs. Before you take this course you should have finished our auscultation courses titled Normal, First and Second Heart Sound, and Extra Heart Sound. You should feel comfortable with the material presented.
Lesson List
Diastolic Murmurs
This course will teach you about auscultation of Diastolic Murmurs. Before you take this course you should have finished the Normal, First and Second Heart sound, and Extra Heart Sound courses. You should feel comfortable with the material presented.
Lesson List


Complex Conditions
This course will teach you about complex conditions where there are murmurs in both systole and diastole. Before taking this auscultation course you should be familiar with the previous material on systolic murmurs, diastolic murmurs, extra heart sounds, etc.
Lesson List


Congenital Abnormalities
This course will teach you how to identify the auscultatory sounds associated with congenital heart conditions. Before taking this course you should have completed the courses concerning heart sounds and murmurs and be comfortable with the material.
Lesson List


Cardiac Conditions Associated with Sudden Death
This course will teach you how to identify sounds associated with conditions leading to sudden death. Before taking this course you should have completed the courses concerning heart sounds and murmurs and be comfortable with the material.
Lesson List


Auscultation in Primary Care
This course is a survey of normal and abnormal heart sounds and murmurs encountered in primary care . The course starts with normal heart sounds and continues with extra heart sounds and murmurs.
Lesson List

Repetition Training

As a supplement to our courses and reference guides, we provide auscultation repetition training. This training is available using courses or quick lessons.


EKG Lessons

After completing auscultation training, your may be interested in EKG lessons and drills. We recommend these two websites:




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