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Time to share my setup here and bump this thread. The microphone I use is a Rode SmartLav+ Lavalier Microphone that I just plug into my PC. The mic end is small enough to fit in the connection end of a soft Littmann earpiece. Fits snug and never need to tape it down. You can find it or similar lav mics that work well for steth earpieces and tubing off Amazon for fairly cheap. I've seen some around $10.
All of the software I use to improve clarity and quality is free. When sharing or recording I do some preprocessing with EqualizerAPO. Free and not too hard to setup. Doesn't cause any latency issues and pretty responsive on Windows for applying filters to audio devices in real time. You are able to download and install some custom plugins, which I have a few. I use EqualizerAPO reduce recording hiss with a low-pass filter (around 1000 to 1200 HZ). I can also increase the gain on the mic if needed. Some live-compression seems to have helped recently with my custom plugins.
All audio editing, even for videos, is done in Audacity. Where I add any needed noise reduction, compression, limiters etc. I used to use the ThinkLabs version of Audacity for some of their preset filters but I don't like them so much anymore. I try to record and have my mic input rate at 48000hz. Then export to the best quality and format I can. Render it out to something smaller if I need to upload it somewhere with small file limits.
With videos I record everything in OBS. In the settings I try to export at my native resolution and scale up any inputs to match. In the recording settings I have two audio tracks. One being the stethmic and the other is what else may be going on, such as a video game. That way I can export and edit each track separately. OBS is also handy for some pre-editing tweaks. I can capture everything I want and lay it all into frame. This includes layering Cardia over the gameplay or cropping video inputs before it records. Very useful IMO. Lastly, OBS can start a virtual camera which some programs recognize as a webcam. I use this to help stream things live or stream my ultrasound live.
To track my Zephyr HRM: I just connect it to my PC via Bluetooth and use Cardia to simulate an ECG and get the monitor's heart rate.
Once everything is recorded and ready for final edits I dump it all into DeVinci Resolve. Export the audio tracks individually for further editing in Audacity if needed. After exporting a video I use HandBrake to reduce file sizes for uploading or to convert formats.
I also remember that they took me to the doctor to see if I had problems with my thyroid, because I was very thin, they listened to my chest and because of the nerves I had a pulse of 120 beats per minute to what I remember, I was a teenager, also in the last check-up in who had already ruled out thyroid problems, a woman who seemed to be a medical student listened to me, and listened to my heartbeat I was very nervous I saw how my heart moved the stethoscope, I watched the student check her watch, while she listened, perhaps counting my beats per minute, at the end of the auscultation, she then went to talk to the family doctor, and I told him something, later that doctor listened to me again, my heart and then said that everything was normal, I think maybe she I noticed that my heart was racing, because of nerves, I was a teenager, the GP later told my parents that my thin complexion was normal, and that everything was in order.
the last time they examined me it was for a cold, they listened to my lungs through my back and said that they could hear my heart, it was beating strongly and maybe a little fast, auscultations or visits to the doctor always make me nervous for this reason Since I was a child, once the female doctor told me that my little heart was racing, but because maybe I had a fever, it was also due to a cold or when she touched my abdomen to see the reason for my stomach pain and felt my heartbeat in my abdomen, and she was surprised saying, scared, that my heart was beating very fast, and she asked me if I was nervous and I told her yes, in fact I was very nervous, I think that is what I remember when they listened to me.
That's a heck of a neck pulse... coming from a powerful, capacious heart, no doubt. I could hear the murmur just a little bit. Systolic, right? Circumstances?
Crazy loud S3, it seems louder than S2! Love it, thank you! :heart:
Yeah... now you know why I was shocked by those amplitude lines.
Crazy loud S3, it seems louder than S2! Love it, thank you! :heart:
@PlatonicSteths You are 100% in the clear. Around here, we look out for each other - and each other's hearts.
I obtained another data point for the hypothesis by asking my other online friend to record when his blood pressure was high. He also noticed an S3. Or were you asking for the scientific reasoning behind the hypothesis?
Yes, that is indeed a very pronounced third heart sound. I do have an S3 sometimes; I've noticed it when I've been sick and occasionally when lying on my left side. From what I've read (well, watched) on the subject, its presence is not pathological in young and athletic people (at least one of which applies to me, I think). I hypothesize that its volume positively correlates with my blood pressure, which I didn't measure on Friday night when I got this file but was probably through the roof at the time. I've recorded since then and not captured that crazy S3, so whatever was going on is over now. In terms of long-term OK-ness, I might present this recording at my next doctor's appointment if the topic comes up.
2 years ago at the doctor. My heart was beating too fast while having an ekg, so the doctor was concerned and decided to take a listen.
Was it for psychological reasons?
It was in 2019 at an urgent care clinic. I don't remember if it was when I thought I had meningitis (it was a bad cold) or when I had chest pain from stress and low potassium. I definitely got stethed the former time; I'm not sure about the latter.
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For me I find my own heartbeat really soothing. Often pretty slow when I listen to it myself. I usually just self-steth when I need to meditate or have some quiet time. Sometimes falling asleep while doing this.
As for why yours speeds up, could be a number of things. Obviously your cardio interest gets you excited for one reason or another. Hearing your own could cause sudden self-awareness of your body that your mind has subconsciously suppressed. Hopefully it doesn't make you anxious but cardiophobia surrounding one's own heart is a thing for a lot of people. My BF loves listening to mine but gets weird feelings when listening to his own. Hopefully you can work around this and get to listen some of your own calm beats.
beautiful pulse
... I like that description.
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Amazing heartbeat!
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I could have sworn I left something here.