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Groups > linux.debian.user > #239290
| From | Emanuel Berg <moasenwood@zoho.eu> |
|---|---|
| Newsgroups | linux.debian.user |
| Subject | Re: smart fans |
| Date | 2021-08-24 23:20 +0200 |
| Message-ID | <CPLZU-1lh-17@gated-at.bofh.it> (permalink) |
| References | (2 earlier) <CPqVr-4j8-3@gated-at.bofh.it> <CPsud-5kS-5@gated-at.bofh.it> <CPuml-6FW-5@gated-at.bofh.it> <CPv8J-7bR-1@gated-at.bofh.it> <CPyzE-MZ-7@gated-at.bofh.it> |
| Organization | linux.* mail to news gateway |
David Christensen wrote:
> These are the equations and conversion factors needed:
>
> Bel = log10(power)
>
> power = 10 ** Bel
>
> 1 Bel = 10 dB
>
> So, your calculation should be:
>
> 2021-08-23 23:42:34 dpchrist@dipsy ~
> $ perl -e '$p=0; $p += 10**($_/10) for @ARGV; print
> 10*log($p)/log(10), "\n"' 14.9 15.9 15.9 14.7 29.0
> 29.696732023509
OK, so then the data is
5 fans: 23.3 dB
5 fans and HDD: 30.0 dB
;;; -*- lexical-binding: t -*-
;;;
;;; this file:
;;; https://dataswamp.org/~incal/emacs-init/audio.el
(defun db (d &rest ds)
(let ((all (cons d ds))
(sum 0) )
(cl-loop for a in all do
(cl-incf sum (expt 10 (/ a 10.0))) )
(format "%.1f dB" (* 10 (/ (log sum) (log 10))) )))
;; (db 18.9 14.9 14.7 15.9 15.9) ; 23.3 dB
;; (db 18.9 14.9 14.7 15.9 15.9 29) ; 30.0 dB
> That said, I would just add the continuous fan noise [...]
> And consider the 29.0 dB HDD vibration separately.
Why?
--
underground experts united
https://dataswamp.org/~incal
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smart fans Emanuel Berg <moasenwood@zoho.eu> - 2021-08-22 02:00 +0200
Re: smart fans Polyna-Maude Racicot-Summerside <debian@polynamaude.com> - 2021-08-22 02:50 +0200
Re: smart fans Emanuel Berg <moasenwood@zoho.eu> - 2021-08-22 03:10 +0200
Re: smart fans Polyna-Maude Racicot-Summerside <debian@polynamaude.com> - 2021-08-22 05:00 +0200
Re: smart fans Emanuel Berg <moasenwood@zoho.eu> - 2021-08-22 05:10 +0200
Re: smart fans Polyna-Maude Racicot-Summerside <debian@polynamaude.com> - 2021-08-22 05:10 +0200
Re: smart fans Emanuel Berg <moasenwood@zoho.eu> - 2021-08-22 05:30 +0200
Re: FOSS "BIOS" (UEFI) (was: Re: smart fans) Reco <recoverym4n@enotuniq.net> - 2021-08-22 07:30 +0200
Re: FOSS "BIOS" (UEFI) (was: Re: smart fans) Emanuel Berg <moasenwood@zoho.eu> - 2021-08-22 08:30 +0200
Re: FOSS "BIOS" (UEFI) (was: Re: smart fans) Emanuel Berg <moasenwood@zoho.eu> - 2021-08-22 10:30 +0200
Re: FOSS "BIOS" (UEFI) The Wanderer <wanderer@fastmail.fm> - 2021-08-22 12:10 +0200
Re: FOSS "BIOS" (UEFI) Emanuel Berg <moasenwood@zoho.eu> - 2021-08-22 13:30 +0200
Re: FOSS "BIOS" (UEFI) (was: Re: smart fans) Polyna-Maude Racicot-Summerside <debian@polynamaude.com> - 2021-08-22 15:20 +0200
Re: FOSS "BIOS" (UEFI) (was: Re: smart fans) Emanuel Berg <moasenwood@zoho.eu> - 2021-08-22 16:30 +0200
Re: FOSS "BIOS" (UEFI) (was: Re: smart fans) Polyna-Maude Racicot-Summerside <debian@polynamaude.com> - 2021-08-22 18:50 +0200
FOSS "BIOS" (UEFI) (was: Re: smart fans) Emanuel Berg <moasenwood@zoho.eu> - 2021-08-22 07:30 +0200
Re: smart fans <tomas@tuxteam.de> - 2021-08-22 09:10 +0200
Re: smart fans Emanuel Berg <moasenwood@zoho.eu> - 2021-08-22 09:50 +0200
Re: smart fans <tomas@tuxteam.de> - 2021-08-22 10:00 +0200
Re: smart fans Emanuel Berg <moasenwood@zoho.eu> - 2021-08-22 10:10 +0200
Re: smart fans Polyna-Maude Racicot-Summerside <debian@polynamaude.com> - 2021-08-22 10:10 +0200
Re: smart fans Emanuel Berg <moasenwood@zoho.eu> - 2021-08-22 10:20 +0200
Re: smart fans Polyna-Maude Racicot-Summerside <debian@polynamaude.com> - 2021-08-22 10:30 +0200
Re: smart fans Emanuel Berg <moasenwood@zoho.eu> - 2021-08-22 10:50 +0200
Re: smart fans Polyna-Maude Racicot-Summerside <debian@polynamaude.com> - 2021-08-22 15:10 +0200
Re: smart fans Emanuel Berg <moasenwood@zoho.eu> - 2021-08-22 16:10 +0200
Re: smart fans The Wanderer <wanderer@fastmail.fm> - 2021-08-22 16:10 +0200
Re: smart fans Emanuel Berg <moasenwood@zoho.eu> - 2021-08-22 16:20 +0200
Re: smart fans Polyna-Maude Racicot-Summerside <debian@polynamaude.com> - 2021-08-22 18:50 +0200
Re: smart fans Hans <hans.ullrich@loop.de> - 2021-08-22 17:30 +0200
Re: smart fans Emanuel Berg <moasenwood@zoho.eu> - 2021-08-22 17:50 +0200
Re: smart fans David Christensen <dpchrist@holgerdanske.com> - 2021-08-22 09:50 +0200
Re: smart fans Emanuel Berg <moasenwood@zoho.eu> - 2021-08-22 10:00 +0200
Re: smart fans Polyna-Maude Racicot-Summerside <debian@polynamaude.com> - 2021-08-22 10:20 +0200
Re: smart fans <tomas@tuxteam.de> - 2021-08-22 10:30 +0200
Re: smart fans Emanuel Berg <moasenwood@zoho.eu> - 2021-08-22 10:40 +0200
Re: smart fans Polyna-Maude Racicot-Summerside <debian@polynamaude.com> - 2021-08-22 10:40 +0200
Re: smart fans Polyna-Maude Racicot-Summerside <debian@polynamaude.com> - 2021-08-22 10:40 +0200
Re: smart fans Emanuel Berg <moasenwood@zoho.eu> - 2021-08-22 10:50 +0200
Re: smart fans Emanuel Berg <moasenwood@zoho.eu> - 2021-08-22 11:30 +0200
Re: smart fans Emanuel Berg <moasenwood@zoho.eu> - 2021-08-22 11:50 +0200
Re: smart fans Polyna-Maude Racicot-Summerside <debian@polynamaude.com> - 2021-08-22 15:10 +0200
Re: smart fans didier gaumet <didier.gaumet@gmail.com> - 2021-08-22 11:50 +0200
Re: smart fans Polyna-Maude Racicot-Summerside <debian@polynamaude.com> - 2021-08-22 15:10 +0200
Re: smart fans didier gaumet <didier.gaumet@gmail.com> - 2021-08-22 11:30 +0200
Re: smart fans Emanuel Berg <moasenwood@zoho.eu> - 2021-08-22 11:00 +0200
Re: smart fans Polyna-Maude Racicot-Summerside <debian@polynamaude.com> - 2021-08-22 15:10 +0200
Re: smart fans <tomas@tuxteam.de> - 2021-08-22 15:50 +0200
Re: smart fans rhkramer@gmail.com - 2021-08-22 16:10 +0200
Re: smart fans Emanuel Berg <moasenwood@zoho.eu> - 2021-08-22 16:50 +0200
Re: smart fans Emanuel Berg <moasenwood@zoho.eu> - 2021-08-22 16:10 +0200
Re: smart fans <tomas@tuxteam.de> - 2021-08-22 16:30 +0200
Re: smart fans Polyna-Maude Racicot-Summerside <debian@polynamaude.com> - 2021-08-22 18:50 +0200
Re: smart fans Gene Heskett <gheskett@shentel.net> - 2021-08-22 23:10 +0200
Re: smart fans Gene Heskett <gheskett@shentel.net> - 2021-08-23 00:20 +0200
Re: smart fans "Thomas Schmitt" <scdbackup@gmx.net> - 2021-08-22 16:30 +0200
Re: smart fans Polyna-Maude Racicot-Summerside <debian@polynamaude.com> - 2021-08-22 18:50 +0200
Re: smart fans Polyna-Maude Racicot-Summerside <debian@polynamaude.com> - 2021-08-22 19:00 +0200
Re: smart fans David Christensen <dpchrist@holgerdanske.com> - 2021-08-22 23:10 +0200
Re: smart fans <tomas@tuxteam.de> - 2021-08-23 10:10 +0200
Re: smart fans Emanuel Berg <moasenwood@zoho.eu> - 2021-08-23 21:10 +0200
Re: smart fans <tomas@tuxteam.de> - 2021-08-23 21:10 +0200
Re: smart fans David Christensen <dpchrist@holgerdanske.com> - 2021-08-23 21:30 +0200
Re: smart fans <tomas@tuxteam.de> - 2021-08-23 21:40 +0200
Re: smart fans Emanuel Berg <moasenwood@zoho.eu> - 2021-08-23 22:30 +0200
Re: smart fans David Christensen <dpchrist@holgerdanske.com> - 2021-08-24 00:30 +0200
Re: smart fans David Christensen <dpchrist@holgerdanske.com> - 2021-08-22 22:30 +0200
Re: smart fans Emanuel Berg <moasenwood@zoho.eu> - 2021-08-22 23:20 +0200
Re: smart fans David Christensen <dpchrist@holgerdanske.com> - 2021-08-22 21:30 +0200
Re: smart fans Emanuel Berg <moasenwood@zoho.eu> - 2021-08-22 22:00 +0200
Re: smart fans didier gaumet <didier.gaumet@gmail.com> - 2021-08-22 23:20 +0200
Re: smart fans Emanuel Berg <moasenwood@zoho.eu> - 2021-08-22 23:40 +0200
Re: smart fans David Christensen <dpchrist@holgerdanske.com> - 2021-08-22 23:50 +0200
Re: smart fans Polyna-Maude Racicot-Summerside <debian@polynamaude.com> - 2021-08-23 00:40 +0200
Re: smart fans didier gaumet <didier.gaumet@gmail.com> - 2021-08-23 09:30 +0200
Re: smart fans Emanuel Berg <moasenwood@zoho.eu> - 2021-08-22 22:20 +0200
Re: smart fans David Christensen <dpchrist@holgerdanske.com> - 2021-08-22 23:10 +0200
Re: smart fans Emanuel Berg <moasenwood@zoho.eu> - 2021-08-22 23:30 +0200
Re: smart fans Emanuel Berg <moasenwood@zoho.eu> - 2021-08-22 23:50 +0200
Re: smart fans David Christensen <dpchrist@holgerdanske.com> - 2021-08-23 00:10 +0200
Re: smart fans Emanuel Berg <moasenwood@zoho.eu> - 2021-08-23 02:00 +0200
Re: smart fans Emanuel Berg <moasenwood@zoho.eu> - 2021-08-23 02:10 +0200
Re: smart fans Emanuel Berg <moasenwood@zoho.eu> - 2021-08-23 02:40 +0200
Re: smart fans Emanuel Berg <moasenwood@zoho.eu> - 2021-08-23 03:00 +0200
Re: smart fans David Christensen <dpchrist@holgerdanske.com> - 2021-08-23 03:30 +0200
Re: smart fans Emanuel Berg <moasenwood@zoho.eu> - 2021-08-23 21:00 +0200
Re: smart fans "Andrew M.A. Cater" <amacater@einval.com> - 2021-08-24 18:20 +0200
Re: smart fans Emanuel Berg <moasenwood@zoho.eu> - 2021-08-24 23:00 +0200
Re: smart fans Polyna-Maude Racicot-Summerside <debian@polynamaude.com> - 2021-08-23 03:30 +0200
Re: smart fans Emanuel Berg <moasenwood@zoho.eu> - 2021-08-23 21:00 +0200
Re: smart fans David Christensen <dpchrist@holgerdanske.com> - 2021-08-23 03:20 +0200
Re: smart fans Emanuel Berg <moasenwood@zoho.eu> - 2021-08-23 21:00 +0200
Re: smart fans "Thomas Schmitt" <scdbackup@gmx.net> - 2021-08-23 22:50 +0200
Re: smart fans Emanuel Berg <moasenwood@zoho.eu> - 2021-08-23 23:00 +0200
Re: smart fans "Thomas Schmitt" <scdbackup@gmx.net> - 2021-08-23 23:30 +0200
Re: smart fans David Christensen <dpchrist@holgerdanske.com> - 2021-08-24 00:50 +0200
Re: smart fans David Christensen <dpchrist@holgerdanske.com> - 2021-08-24 01:30 +0200
Re: smart fans Emanuel Berg <moasenwood@zoho.eu> - 2021-08-24 02:30 +0200
Re: smart fans Emanuel Berg <moasenwood@zoho.eu> - 2021-08-24 03:00 +0200
Re: smart fans David Christensen <dpchrist@holgerdanske.com> - 2021-08-24 04:30 +0200
Re: smart fans Emanuel Berg <moasenwood@zoho.eu> - 2021-08-24 05:20 +0200
Re: smart fans David Christensen <dpchrist@holgerdanske.com> - 2021-08-24 09:00 +0200
Re: smart fans Emanuel Berg <moasenwood@zoho.eu> - 2021-08-24 23:20 +0200
Re: smart fans Emanuel Berg <moasenwood@zoho.eu> - 2021-08-24 23:40 +0200
Re: smart fans David Christensen <dpchrist@holgerdanske.com> - 2021-08-24 00:40 +0200
Re: smart fans David Christensen <dpchrist@holgerdanske.com> - 2021-08-24 00:20 +0200
Re: smart fans Emanuel Berg <moasenwood@zoho.eu> - 2021-08-24 02:10 +0200
Re: smart fans David Christensen <dpchrist@holgerdanske.com> - 2021-08-24 04:00 +0200
Re: smart fans Emanuel Berg <moasenwood@zoho.eu> - 2021-08-24 07:30 +0200
Re: smart fans David Christensen <dpchrist@holgerdanske.com> - 2021-08-24 09:50 +0200
Re: smart fans Emanuel Berg <moasenwood@zoho.eu> - 2021-08-25 00:20 +0200
Re: smart fans David Christensen <dpchrist@holgerdanske.com> - 2021-08-25 01:30 +0200
Re: smart fans Emanuel Berg <moasenwood@zoho.eu> - 2021-08-29 01:00 +0200
Re: smart fans David Christensen <dpchrist@holgerdanske.com> - 2021-08-29 12:00 +0200
Re: smart fans Emanuel Berg <moasenwood@zoho.eu> - 2021-09-04 00:10 +0200
Re: smart fans David Christensen <dpchrist@holgerdanske.com> - 2021-09-04 03:50 +0200
Re: smart fans Emanuel Berg <moasenwood@zoho.eu> - 2021-09-04 04:50 +0200
Re: smart fans David Christensen <dpchrist@holgerdanske.com> - 2021-09-04 23:00 +0200
Re: smart fans Emanuel Berg <moasenwood@zoho.eu> - 2021-09-07 03:10 +0200
Re: smart fans David Christensen <dpchrist@holgerdanske.com> - 2021-09-07 23:20 +0200
Re: smart fans David Christensen <dpchrist@holgerdanske.com> - 2021-08-24 11:20 +0200
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