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I am looking for an Android application that records the sound all the time and stores it for a few days. What I want exactly :

  • Always record the sound (as soon as the phone is on or I launch the app until the phone is off)
  • Store the sound in log files by pieces (e.g. of 1 hour)
  • Delete the files after some time (e.g. 3 days)
  • No format preference
  • Storage limit : no more than 2GB par day (which is possible in MP3 according to this website)
  • No real quality limit

I don't want to spy anyone, it is for personnal use only. I want to be able to listen something again if it was important, funny, unclear...
I don't want a dedicated device because I think I would be easier to manage the audio files on my phone (save and listen the ones I want, delete the others)

  • What do you mean by record the sound 'permanently', when you want it to automatically delete it after a period of time? – user151841 Jul 20 '16 at 16:49
  • @user151841 I mean that the audio is recorded all the time – Fabich Jul 20 '16 at 16:54
  • You might want to change that to 'continuous' or 'always-on' – user151841 Jul 20 '16 at 16:56
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    Couple of quick notes: 1) you'll have to have the phone "on", not sleeping, for that whole period, so you'll probably want it plugged in. And 2) This is doable (e.g., the uncompressed file usage for the lowest quality of sound (16 bit 44.1 KHz) is around 7.6 Gigabytes per day), but you'll want compression too. Personally, I have to ask: why don't you just buy a dedicated eavesdropping (sorry, surveillance) device? – CPerkins Jul 20 '16 at 19:13
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    @CPerkins Leaving politics out (mentioning the implications is of course good! Like to let people know you're recording), there are legal and legit uses for this. Imagine you "hear things" and everyone's claiming you're just imagining it, this gives you a change for an "independent source". A baby monitor (heh! power-source attached! :) or security-surveillance of your home (again with power attached – and here a 24/7 absolutely makes sense) are other options. Plus many more. So shall we concentrate on the "solution" now? :D – Izzy Jul 22 '16 at 15:26

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