From: Clemens Ladisch <clemens@ladisch.de>
To: alsa-devel@alsa-project.org
Subject: Re: Question about Conversion to S24_LE from S24_3LE
Date: Fri, 10 Aug 2012 16:45:47 +0200 [thread overview]
Message-ID: <50251E9B.5010401@ladisch.de> (raw)
In-Reply-To: <1C2A10B55A8EFD41B703692DB3F435E40C23248A@G01JPEXMBYT21>
Fujikawa, Kazutoshi wrote:
>>> 0x00123456 (MSB 0(or 0xFF) padding)
>>
>> This is the correct S24_LE representation.
>
> I record a sound file by arecord command on Ubuntu.
> (% arecord -f S24_LE -r 48000 -c 2 ubuntu_rec_S24_LE_48000.wav )
>
> Then this file was created, and it was LSB 0 padding.
> So I think that S24_LE format is LSB 0 padding.
>
> % od -t x4 ubuntu_rec_S24_LE_48000.wav
> 0000000 46464952 003a9824 45564157 20746d66
> 0000010 00000010 00020001 0000bb80 0005dc00
> 0000020 00180008 61746164 003a9800 ffffbf00
> 0000030 ffffc300 ffffc600 ffffca00 ffffd300
> 0000040 ffffd600 ffffdc00 ffffe000 ffffe000
> 0000050 ffffe400 ffffea00 ffffeb00 fffff800
> 0000060 fffffa00 00000400 00000500 00001000
> 0000070 00000f00 00001600 00001700 00001500
>
> Do you know why this file is LSB 0 padding?
What hardware (driver) was this recorded from?
Does the hardware actually support S24_LE, or was this converted?
Regards,
Clemens
next prev parent reply other threads:[~2012-08-10 14:16 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-08-10 0:28 Question about Conversion to S24_LE from S24_3LE Fujikawa, Kazutoshi
2012-08-10 6:13 ` Takashi Iwai
2012-08-10 8:44 ` Fujikawa, Kazutoshi
2012-08-10 10:00 ` Takashi Iwai
2012-08-10 14:45 ` Clemens Ladisch [this message]
[not found] <13855858.72631345077438708.cxe06701@nifty.ne.jp>
2012-08-16 5:41 ` Takashi Iwai
[not found] ` <24633629.312801345103755036.cxe06701@nifty.ne.jp>
2012-08-16 9:16 ` Takashi Iwai
2012-08-16 9:41 ` Jaroslav Kysela
[not found] ` <11973478.303981345442271456.cxe06701@nifty.ne.jp>
2012-08-20 6:47 ` Takashi Iwai
-- strict thread matches above, loose matches on Subject: below --
2016-04-18 9:24 Tan, Seng Kai
2016-04-18 9:32 ` Clemens Ladisch
2016-04-18 9:54 ` Tan, Seng Kai
2016-04-18 12:01 ` Clemens Ladisch
2016-04-19 0:57 ` Tan, Seng Kai
2016-04-19 7:27 ` Clemens Ladisch
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