![](https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEj0cA1_28rtXbekFmHnUtWJk_xSSazmFcMLac9cV4bW3A8gHcFuvxOWJQztLgnaW3on3vxdumIYrZCaN8128Qh64UjxZ6BuX0x3h63lv7PMYzlc_epxayMJSq8Gar3h7v4oY2CXGm3pJkoG/s400/heartbeatspectrum_Page_2.jpg)
![](https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgF9Fr9aA5BTpDhcmE1pUyoYmgwZ1xEvyS4EUsaHRLq-Q8G6Tb7RaUSbGiLWDMp5fnCxunhXyqxY8ZP8VaxihfUiq9-O4p3RZtjbiMQ10i0pAbVDex8q5w48fFskKfurnx7u2WhxbFiG499/s400/heartbeatspectrum_Page_1.jpg)
In developing the Tangible time project I altered the frequency of my alarm clock to match a human heartbeat whilst rested and during high-stress. The result of this is inaudible to the human ear without amplification however FFT can produce these spectrums to be experienced visually.
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