In theory, with Stemoscope you can hear most of the sounds that can be heard with a traditional stethoscope.
If you are using Apple’s iPhone/iPad/iPod Touch, you can search “Stemoscope” in the App Store of your iPhone/iPad/iPod Touch and install. Please note if you are using iPad, you should choose “only for iPhone” when you do the search. If you are using Android phones, you can search “Stemoscope” in Google Play and install.
Stemoscope is designed from hardware to software to protect your data and privacy. Firstly, there is a physical switch on Stemoscope. When it is switched off, the power supply is cuff off physically and there is no opportunity for the Stemoscope to sense sounds when it is off. Secondly, the data transfer between a Stemoscope and your phone is encrypted. Thirdly, the data are saved in your phone or pad and you have full control on your audio data. It is similar to those photos you take and you have full control on them.
No. Each time, a phone can only receive sounds from a single Stemoscope. If you want to record from multiple Stemoscopes, you may need to use multiple phones.
Yes. The Stemoscope provides many options for you to share or export the audio files.
The audio signals are saved in a non-compressed “.wav” file.
Compared with digital stethoscopes on the market, Stemoscope has many advantages. Firstly, Stemoscope is much smaller, and measures only 38 mm in diameter and 11 mm thick. Secondly, Stemoscope is wearable. Thanks to the compact design and strap accessory, you can wear it on your body, your pets or anywhere you are interested. Thirdly, Stemoscope is powered by a great App. Last but important, Stemoscope is very affordable.
The Stemoscope audio quality is very good! You may refer to independant third party reviews to see how professionals said about Stemoscope. You may also listen to those audio samples we recorded with Stemoscope on our Youtube channel https://www.youtube.com/channel/UCO5TlYi3dtdA7Yfp_6KdW8A.
No. Stemoscope is not designed as a medical device. On the contrary, Stemoscope is designed for STEM education and recreations.
Currently the App only runs on iOS and Android. If you want to connect Stemoscope to a computer, you need to use a phone/pad to bridge. By doing so, the Stemoscope transmits signals to your phone and the phone can transmit the processed signals to your computer via your phone audio jack and an audio cable.
Yes. The sounds will be sensed and transferred from your Stemoscope to your phone/tablets and then your phone/tablet will transmit the audio signal to your Bluetooth earphones. Bluetooth earphones can’t be connected to a Stemoscope directly.
No. Stemoscope transmits the audio signals to a phone or a pad via Bluetooth and then the signals are processed and played on the phone or the pad, so a phone or a pad is needed to use a Stemoscope.
No. The diaphragm can’t be removed. The diaphragm, together with the chamber, amplifies the sounds. If you remove it, you may hear very low volume or even no body sounds.
Generally, the bell mode is good for listening to heartbeats which are mainly made of very low frequency sounds. The diaphram mode is good for listening to breath sounds because the heartbeats sounds are weaken in this mode.
When your Stemoscope is working, use your finger to tap/knock the diaphragm. If you can hear a loud dub sound with your earphones and high volume when you tap/knock, the Stemoscope works well. Heart sounds are easy to be detected. You may listen to your heartbeats. If you can hear your heartbeats clearly, your Stemoscope works well. Please don’t forget to wear your earphones and increase your phone volume if necessary.
Since most sounds sensed by Stemoscope have a very low frequency, earphones favoring bass sounds (low frequency sounds or low pitch sounds) are prefered. Most headphones that generally cover the ears perform very well. While for earphones, the original earphones coming with the iPhones or Samsung phones also perform well.
When you hold the Stemoscope on an object you want to listen, there can be multiple sources of noise. One source is from the non-stable hand. You may try to hold the Stemoscope as stable as possible and avoid friction between the Stemoscope and the object surface. Another option is to use a strap accessary, which can totally remove such friction induced noise.
You can open the Stemoscope App and tap “settings” on the home screen. In settings, tap “Device management”. You can find “Add a new stemoscope”, and then you can add a new Stemoscope the same as the first one you added.
You can use your registered email address to retrieve the QR codes of all the Stemocopes you have registered. Please use this email address to send an email to firstname.lastname@example.org, and tell us that your QR code is broken. We will email the QR code to your email address.
A stable Bluetooth working distance depends on a lot of factors such as the environment and your phone. In a “busy” wireless environment where there are many phones and WIFI devices, the Bluetooth connection could be interfered. Our recommended working distance is 2 meter, within which Stemoscope normally works well based on our test. For the best Bluetooth performance, you may minimize the distance between your phone and Stemoscope and minimize the obstacles between them.
The loudness or the volume is determined by several factors. Firstly, the source of the sounds can be weak, depending on what you are listening to. Secondly, different phones have different audio output power level. For example, an iPod touch outputs higher power level than an iPhone. Thirdly, the performance of earphones varies quite a lot. You may try a headphone for better performance.
Human ears have different sensitity to different audio frequency. This is generally described by a hearing curve. In generally, human ears are less sensitive to very low frequency (pitch) sounds. With the same power level (Phone volume level), we feel the low frequency sounds are less loud. We may increase the phone volume to feel the low frequency sounds are loud enough and when we do not use Stemoscope adjust the phone volume to the orignal level.
Human body sounds are most times full of bass (low pitch or low frequency) elements. The builtin speaker in a phone is generally not good at playing these bass sounds. Earphones performs much better than builtin speakers.
Firstly, you need to give the Stemoscope App access to your phone camemra to read the QR code. Seconly, you may try different light environment and shoot angles. Thirdly, you may screw down the diaphram cover and put the diaphram on a white background such as a white paper to shoot the QR code.
It generally takes around two weeks depending the shipping destiny. If you want fast shipping, please contact us. Additional shipping cost may be needed.