From: "Alexander E. Patrakov" <patrakov@gmail.com>
To: David Henningsson <david.henningsson@canonical.com>,
"Nikita N." <nikitan@operamail.com>,
Clemens Ladisch <clemens@ladisch.de>,
alsa-devel@alsa-project.org, Takashi Iwai <tiwai@suse.de>
Subject: Re: Speaker burnout
Date: Tue, 31 Mar 2015 15:57:15 +0500 [thread overview]
Message-ID: <551A7D8B.4030107@gmail.com> (raw)
In-Reply-To: <551A7A4D.203@canonical.com>
31.03.2015 15:43, David Henningsson wrote:
> 2) From the person with the hardware, we will need alsa-info (
> https://wiki.ubuntu.com/Audio/AlsaInfo ), and also the max volume where
> this does not happen. Is -6 dB good enough? -12 dB? I don't know - this
> is something someone with the hardware must tell us, it cannot simply be
> guessed.
Another useful piece of information would be what Windows does here.
Please generate a -36 dB 1000 Hz sine wave in Audacity, save as a wav
file, play at the maximum volume in Windows, record with a mobile phone
(you can use software such as Tape Machine which turns AGC off in the
phone). Ideally, the mobile phone should be placed on the table to avoid
movements. Play the same wav file in linux (with a known safe
attenuation), also record the sound without moving the mobile phone.
Compare the recordings in Audacity to find out the attenuation done by
Windows.
--
Alexander E. Patrakov
next prev parent reply other threads:[~2015-03-31 10:56 UTC|newest]
Thread overview: 36+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-03-28 14:03 bug Nikita N.
2015-03-30 7:19 ` bug Clemens Ladisch
2015-03-30 10:27 ` bug Nikita N.
2015-03-30 11:13 ` bug Clemens Ladisch
2015-03-30 14:37 ` bug Nikita N.
2015-03-31 7:18 ` bug Eliot Blennerhassett
2015-03-31 8:19 ` bug Nikita N.
2015-03-31 8:38 ` bug Clemens Ladisch
2015-03-31 9:05 ` bug Nikita N.
2015-03-31 12:42 ` bug Clemens Ladisch
2015-03-31 8:41 ` potential speaker burnout Eliot Blennerhassett
2015-03-31 8:24 ` bug Ricard Wanderlof
2015-03-31 8:56 ` bug Nikita N.
2015-03-31 9:14 ` bug Ricard Wanderlof
2015-03-31 10:26 ` bug Maarten de Boer
2015-03-31 10:49 ` bug Nikita N.
2015-03-31 11:05 ` bug Maarten de Boer
2015-03-31 11:44 ` bug Ricard Wanderlof
2015-03-31 8:54 ` bug Eliot Blennerhassett
2015-03-31 9:34 ` Speaker burnout David Henningsson
2015-03-31 10:06 ` Nikita N.
2015-03-31 10:43 ` David Henningsson
2015-03-31 10:57 ` Alexander E. Patrakov [this message]
2015-03-31 11:23 ` Nikolay Dimitrov
2015-03-31 11:31 ` Ricard Wanderlof
2015-03-31 11:45 ` David Henningsson
2015-03-31 13:47 ` Torsten Schenk
2015-03-31 19:14 ` Nikita N.
2015-04-05 16:36 ` Takashi Iwai
2015-04-05 16:11 ` Takashi Iwai
2015-04-07 5:30 ` Eliot Blennerhassett
2015-04-07 7:09 ` David Henningsson
2015-04-07 7:26 ` Clemens Ladisch
2015-04-07 7:49 ` Eliot Blennerhassett
2015-04-07 10:55 ` David Henningsson
2015-04-07 11:29 ` Ricard Wanderlof
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