From: Hui Wang <hui.wang@canonical.com>
To: Raymond Yau <superquad.vortex2@gmail.com>
Cc: Takashi Iwai <tiwai@suse.de>,
ALSA Development Mailing List <alsa-devel@alsa-project.org>,
David Henningsson <david.henningsson@canonical.com>
Subject: Re: 2 speakers are assigned to the same DAC, this can't support 4.0/2.1 channles
Date: Fri, 12 Jun 2015 11:32:04 +0800 [thread overview]
Message-ID: <557A52B4.3080505@canonical.com> (raw)
In-Reply-To: <CAN8ccib8K2c_DpDEY3rpE_VS+YY9pRqH-h9usfa0K0-k4yxHLA@mail.gmail.com>
On 06/12/2015 09:34 AM, Raymond Yau wrote:
>>>> The alsa-info.txt for that Dell machine is at
>>> http://pastebin.ubuntu.com/11667982/
>>>
>>> The subwoofer is also at mono pin complex, are there any low pass filter
>>> for the subwoofer or vendor coeff need to be set ?
>> I don't know it, I guess there is no hardware filter, it will work with
> the software low pass filter in the pulseaudio.
> The funcional block diagram indicate equaliser is only connected to port D
> This mean only the internal speaker can use high pass filter
>
> Do you mean your can hear high frequency from the subwoofer of alc255 ?
I am not sure about it, but enable/disable the SW lfe filter will make
the sound of subwoofer different
> _______________________________________________
> Alsa-devel mailing list
> Alsa-devel@alsa-project.org
> http://mailman.alsa-project.org/mailman/listinfo/alsa-devel
>
>
next prev parent reply other threads:[~2015-06-12 3:32 UTC|newest]
Thread overview: 28+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-06-09 9:38 2 speakers are assigned to the same DAC, this can't support 4.0/2.1 channles hwang4
2015-06-09 11:50 ` Raymond Yau
2015-06-09 13:20 ` Hui Wang
2015-06-10 1:30 ` Raymond Yau
2015-06-10 3:18 ` hwang4
2015-06-11 1:15 ` Raymond Yau
2015-06-11 2:15 ` Hui Wang
2015-06-11 7:37 ` Raymond Yau
2015-06-11 8:33 ` Hui Wang
2015-06-11 16:44 ` Raymond Yau
2015-06-10 4:59 ` Raymond Yau
2015-06-10 6:42 ` hwang4
2015-06-12 1:34 ` Raymond Yau
2015-06-12 3:32 ` Hui Wang [this message]
2015-06-09 11:51 ` Takashi Iwai
2015-06-09 13:26 ` Hui Wang
2015-06-10 4:19 ` hwang4
2015-06-10 10:28 ` Takashi Iwai
2015-06-11 15:10 ` Takashi Iwai
2015-06-12 1:07 ` Hui Wang
2015-06-12 1:22 ` Raymond Yau
2015-06-12 3:25 ` Hui Wang
2015-06-12 4:42 ` Raymond Yau
2015-06-12 6:07 ` David Henningsson
2015-06-12 9:40 ` Raymond Yau
2015-06-12 16:05 ` Takashi Iwai
2015-06-13 2:43 ` Raymond Yau
2015-06-14 6:48 ` Raymond Yau
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