From: David Henningsson <david.henningsson@canonical.com>
To: alsa-devel@alsa-project.org
Subject: Re: Alsamixertest
Date: Thu, 21 Oct 2010 09:50:19 +0200 [thread overview]
Message-ID: <4CBFF0BB.5060900@canonical.com> (raw)
In-Reply-To: <AANLkTinJnCQvQmQL16-pWBhmaZjW1_nUayHVa-yaC3FO@mail.gmail.com>
On 2010-10-21 06:36, Raymond Yau wrote:
> 2010/10/4 David Henningsson<david.henningsson@canonical.com>
>
>>
>>
>> Exactly, this is a test tool that checks whether the mixer control names
>> and dB information live up to PulseAudio's expectations. That's the
>> tool's purpose.
>>
>> What's PulseAudio' s expectation ?
>
> PA 's developer seem expect max_dB of all HDA codec are 0dB
>
> Your alsamixertest program does not test any dB range above 0dB
That's correct, I don't really know how to deal with that, and I'm not
sure how PA deals with that either. I assume it goes above 0 dB on one
of the volume controls when a user wants it to.
But from alsamixertest's perspective, the question is: if you do, should
detected distortion cause an error or not?
Also alsamixertest could be expanded to trust playback and test
recording, and then I assume this question will be even more important
as most mic boost controls go from 0 dB to +20 dB or so (if they even
provide dB information).
--
David Henningsson, Canonical Ltd.
http://launchpad.net/~diwic
next prev parent reply other threads:[~2010-10-21 7:50 UTC|newest]
Thread overview: 27+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-09-26 15:17 how to mandate the use of PCM plugin? Stas Sergeev
2010-09-27 0:58 ` Mark Brown
2010-09-27 4:48 ` Stas Sergeev
2010-09-27 5:54 ` Mark Brown
2010-09-27 6:53 ` Stas Sergeev
2010-09-27 22:00 ` Mark Brown
2010-09-28 5:38 ` Stas Sergeev
2010-09-28 9:36 ` Raymond Yau
2010-09-27 14:40 ` Stas Sergeev
2010-09-27 17:57 ` Colin Guthrie
2010-09-28 1:01 ` Raymond Yau
2010-09-28 4:07 ` Raymond Yau
2010-09-29 9:28 ` David Henningsson
2010-10-02 2:11 ` Raymond Yau
2010-10-04 7:51 ` Alsamixertest (was: how to mandate the use of PCM plugin?) David Henningsson
2010-10-04 12:01 ` Alsamixertest Clemens Ladisch
2010-10-04 12:25 ` Alsamixertest David Henningsson
2010-10-04 12:34 ` Alsamixertest Clemens Ladisch
2010-10-06 4:08 ` Alsamixertest Raymond Yau
2010-10-05 1:50 ` Alsamixertest Raymond Yau
2010-10-12 14:33 ` Alsamixertest Raymond Yau
2010-10-21 4:36 ` Alsamixertest Raymond Yau
2010-10-21 7:50 ` David Henningsson [this message]
2010-10-22 1:53 ` Alsamixertest Raymond Yau
-- strict thread matches above, loose matches on Subject: below --
2010-09-29 9:42 Alsamixertest David Henningsson
2010-09-29 9:48 ` Alsamixertest Raymond Yau
2010-09-29 10:12 ` Alsamixertest David Henningsson
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