[sdiy] Amplifying Pulse (Slightly OT)

Ben Bradley ben.pi.bradley at gmail.com
Fri Aug 10 04:07:32 CEST 2018

An amplified version of the 'real' pulse/heartbeat sound may be what
they SAY they want, but it perhaps won't be once they hear it.

Also, things like the oxygen sensor and Pulsar chest strap give out a
pulse (the electrical, rectangular kind) for each heartbeat that's
just a 'click' in a speaker, also likely not acceptable. Once you have
a reliable trigger, you can then generate the sound you want, maybe
something like (for one example) a muffled kick drum.

The sound to generate depends on the purpose for this - if it's to
generate SOME sound for every pulse so the person can have a gross but
easily audible idea of their heart reate, it may just as well be a
short tone from a 555 timer.

As for faking it, there's this recording you might could sample (not
saying anything about the legality here), it starts off, oh, what was
the name of that album ... oh yeah, "The Dark Side Of The Moon."

On Thu, Aug 9, 2018 at 9:39 PM, Michael Zacherl <sdiy-mz01 at blauwurf.info> wrote:
>> On 10 Aug 2018, at 03:23, Quincas Moreira <quincas at gmail.com> wrote:
>> fake it with the modular, nobody will know :)
> mhm, you just gave it away! ;)
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