Thinklabs One User Manual page 29

Your Thinklabs One digital stethoscope is designed to produce very clear,
undistorted sound. If you're not getting clear sound, possible problems and
solutions:
- Volume is too high. Reduce Volume level.
- Excessive pressure is being applied when listening. Decrease pressure for loud
sounds.
- For in-ear headphones, your headphones might not be sealed in your auditory
canals, so the speaker cones are moving with no resistance and the One's power
is driving them hard. Try sealing your in-ear headphones.
- For on-ear or over-the-ear headphones, your headphones might not be up to
the task of reproducing the One's bass. Even high-priced headphones aren't
always designed for strong bass. Think hip-hop, not classical music when
considering what your headphones can handle.
- One is not being held in a firm and steady position, or is not being held with a
steady pressure against the patient. Changing pressure is akin to vibration.
Thinklabs EmD diaphragm can sense frequencies down to the sub-sonic range, in
order to cover the whole audio spectrum for murmur detection. Vibrations caused
by patient or user hand movement are also sometimes sensed as loud signals
that distort body sounds. Hold One steady with a light but consistent pressure
against the patient. If in a moving situation (ambulance, aircraft) it sometimes
helps to hold the One stethoscope so that the fingers holding your stethoscope
also touch the patient chest wall, so that stethoscope and chest wall move in
unison.
● I work in a noisy environment and I can hear ambient sound.
Thinklabs stethoscopes are designed to attenuate ambient noise. The EmD
Diaphragm and acoustic design of the One naturally reduce ambient noise.
However, this works best when you have good skin contact.
- First thing to do is get good skin contact rather than listening through clothing.
- Consider your filter settings. We provide filter settings that cut out higher
frequencies, especially for heart sounds. Play with the various filters and find the
ones you like best for your work environment. See the Filters section for more
advice on this.
- Consider the volume level. Don't over-amplify if you don't need to.
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