Below you can see some of the techniques and objects I used for the creation of a hyper realistic heart beat.
01. Real Heartbeat
To record my heartbeat I used a small ultrasound device.
02. Air Pump
To record a detailed air flow sound I used a foot air pump. I imagined I would hear something like this if I could put my ear right next to a beating heart.
03. Manual Machine
This is a percussive instrument I built a while ago, it was meant to create the sound of an electronic drum machine, but in a acoustic form (why not just using a drum machine you might wonder?).
Here's a video of the Manual Machine played my my friend Wally.
04. Water Deep Beat
To create a deep sound to extend the low end of the real heart beat, I half filled up a big plastic bottle and hit it with a soft mallet.
05. Heart Balloon
This didn't make the cut in the BTS video, but it was a fun element to record. I held a balloon from the bottom so that it could resonate freely, and pushed it against the microphone to capture a close perspective. Played with a big soft mallet.
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