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[Cellar] Last call on FLAC specification

Martin Leese <martin.leese@stanfordalumni.org> Thu, 29 September 2022 15:39 UTC

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From: Martin Leese <martin.leese@stanfordalumni.org>
Date: Thu, 29 Sep 2022 09:39:20 -0600
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Subject: [Cellar] Last call on FLAC specification
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> Date: Wed, 28 Sep 2022 16:56:52 +0200
> From: Martijn van Beurden <mvanb1@gmail.com>
> To: flac-dev@xiph.org
> Subject: [flac-dev] Last call on FLAC specification
>
> Hi all,
>
> A working group of the IETF started working on turning the FLAC
> specification into an RFC a few years ago. The document as published on the
> FLAC website was taken as starting point and improved upon.

I have a couple of comments.

1.  Section 9.6.2, Page 22, the line:
    WAVEFORMATEXTENSIBLE_CHANNEL_MASK=0x12004.

    should read:
    WAVEFORMATEXTENSIBLE_CHANNEL_MASK=0x12104.

2.  Section 9.6.2, Table 7, Page 20.  FLAC files do not
    necessarily contain speaker feeds.  Examples of such
    files are a collection of audio stems or an Ambisonic
    B-Format recording.  Could we therefore please include
    a Channel description of SPEAKER_NONE with:
    WAVEFORMATEXTENSIBLE_CHANNEL_MASK=0x0

    Given the way Table 7 is organised, It is not immediately
    clear to me how to include this.

Regards,
Martin
-- 
Martin J Leese
E-mail: martin.leese  stanfordalumni.org
Web: http://members.tripod.com/martin_leese/

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