EA codec type 0x19 in Battlefield Hardline

[daemon1]

I recently took a quick look at BF Hardline beta, and it has about 3000+ audio files, most of them in XAS ADPCM, but they also have 4 files with codec ID = 0x19, which is also seen in 2012 post about FIFA. They have an interesting repeating pattern in the middle. Any ideas about that codec since then?

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EA codec types
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2 - PCM
3 - Xbox XMA
4 - XAS ADPCM
5 - EALayer3 MPEG Layer 3
6 - EALayer3 variant 2
7 - EALayer3 variant 3
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and the same with B header:
----------------------------
12 - PCM
13 - Xbox XMA
14 - XAS ADPCM
15 - EALayer3 MPEG Layer 3
16 - EALayer3 variant 2
17 - EALayer3 variant 3
19 - ???

Here's the start of a normal chunk, which has 0x1983 samples encoded to 0x238 bytes


And here's a silent chunk, which has 0x1900 samples encoded to only 0xA8 bytes

[Apollo]

Speex codec and that pattern has nothing to do with the codec on particular