root@BeagleBone:/home/debian# arecord -c 8 -r 128 -f S32 -t raw -D hw AD7771_rec1.raw
Recording raw data 'AD7771_rec1.raw' : Signed 32 bit Little Endian, Rate 128000 Hz, Channels 8
Warning: rate is not accurate (requested = 128000Hz, got = 96000Hz)
         please, try the plug plugin (-Dplug:hw)
^CAborted by signal Interrupt...

xxd -e AD7771_rec1.raw
00000000: 82ffff36 a2ffff92 cc000049 ebffffbc  6.......I.......
00000010: 95ffffdd b7ffff9f d1ffffe9 f4fffffc  ................
00000020: 8affffdf acffffe3 c0ffff5e e1000043  ........^...C...
00000030: 9100007a b9ffff7d dfffff71 f0ffff67  z...}...q...g...
00000040: 8dffffd8 a600001d cdffffcd e4ffffee  ................
00000050: 930000b8 b9ffff29 d3ffff73 f4ffff62  ....)...s...b...
00000060: 89fffffd a2ffff86 c000001c eaffffd0  ................
00000070: 93000072 b2ffffbb d4ffff76 f1000026  r.......v...&...
00000080: 8effff56 ab000066 c3ffff9c e80000d5  V...f...........
00000090: 9e00007a b6ffff88 d3ffffbf f7000011  z...............
000000a0: 8bffffff a2ffffdd c8ffffc0 ef000051  ............Q...
000000b0: 92ffffad b4fffec0 d5fffef2 f2ffffa7  ................
000000c0: 890000d2 abffffb4 cc00007b ec0000e0  ........{.......
000000d0: 93ffffbc beffff45 d2fffefb f4ffff85  ....E...........
000000e0: 8dffffb5 a4000005 c200000d e3fffefa  ................
000000f0: 99ffffa8 b1ffff8f deffffcc f3ffff84  ................
00000100: 88ffffca a900000e c2fffffe e500002c  ............,...
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00000130: 90000092 bdffff63 d6ffffc4 fd00002f  ....c......./...
00000140: 8c000006 a1fffef5 c4ffffa0 ed000019  ................
00000150: 900000fd bfffffe3 d6ffffac f4000069  ............i...
00000160: 87ffffb9 acffff99 c4000032 e00000b0  ........2.......
00000170: 91000039 b7ffff55 d000001f f7ffffe6  9...U...........
00000180: 86000029 a9000076 c4ffff69 e70000ca  )...v...i.......
00000190: 93000033 bcfffe97 d0000011 f7ffffdc  3...............
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000001b0: 97ffff05 b8fffeda d4ffff9a fbffff5f  ............_...
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00000230: 94ffffee bdffff32 d6ffff37 f1ffffc1  ....2...7.......
00000240: 8dffff48 acffff9c ce000038 efffffb4  H.......8.......
00000250: 95ffffe2 bffffeac d4fffffc f6ffff80  ................
00000260: 88ffffb5 a0ffffa9 ca00008a e7000063  ............c...
00000270: 97ffffdb b8fffef2 deffff98 fdffff86  ................
00000280: 86ffffc7 a5ffffe4 c4ffff7b e20000a9  ........{.......
00000290: 9d000091 b2ffff9c d8ffffba f9ffff3a  ............:...
000002a0: 8700006d a9ffff9c c7ffff89 e600003b  m...........;...
000002b0: 92ffffa3 b4ffff6c dcffff94 fd000054  ....l.......T...
000002c0: 86000004 abfffecb c9ffff42 e90000db  ........B.......
000002d0: 91ffffa1 b7ffff2f dbffffb7 f10000b4  ..../...........
000002e0: 8dffffed a3ffffef cd000019 e5000011  ................
000002f0: 9cffff59 b0000044 dfffff16 f7ffffa9  Y...D...........
00000300: 8cffffcc a10000be c4fffffb e7ffff83  ................
00000310: 9400009a bdffff29 d100002d fb000014  ....)...-.......
00000320: 85ffffa8 adfffff2 c0000080 eb000065  ............e...
00000330: 9a00005a beffff7b de000016 f0000048  Z...{.......H...
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00000360: 85000016 a3fffff0 cb00001f e7000049  ............I...
00000370: 9f000000 bdfffe73 ddffffc5 faffffe3  ....s...........
00000380: 8100002c a2000069 c0ffffa3 e7ffffdb  ,...i...........
00000390: 91ffff96 bcffffbb daffff38 f7ffffc2  ........8.......
000003a0: 8f000024 a600003f c9000008 e700003e  $...?.......>...
000003b0: 9f00009b b9ffff46 d8ffff61 f8ffff53  ....F...a...S...
000003c0: 89ffffc4 a1fffffd c700003b e40000c1  ........;.......
000003d0: 9dffffc7 b1ffff8d d4000009 f6000019  ................
000003e0: 8fffffbc a1ffff8c ce0000c5 e1ffffda  ................
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00000470: 990000b3 b4ffff96 d1ffffad fefffeed  ................
00000480: 8ffffff8 adffff84 c1ffff87 e9ffff06  ................
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000004a0: 8cffffaf ad000025 c6ffffd4 ef000055  ....%.......U...
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000004d0: 980000d3 befffffd d3fffff0 f0ffff8d  ................
000004e0: 86000011 a6000019 c700000d e60000be  ................
000004f0: 96ffff92 b9fffea8 d9ffffbc f9ffff89  ................
00000500: 87ffff58 acffff7b cd00008a e5ffffdb  X...{...........
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00000520: 85ffffad a6000026 ceffffc5 e8ffffc9  ....&...........
00000530: 90000011 b9fffff9 db000054 fd00004f  ........T...O...
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000005d0: 9e000098 baffffa5 d8ffff78 f000004c  ........x...L...
000005e0: 81000008 a1ffffee c3000066 eb00006b  ........f...k...
000005f0: 99ffffe6 bfffff78 d6ffff3b f2000033  ....x...;...3...
00000600: 86ffffcf ad00003a c4ffffc1 effffff8  ....:...........
00000610: 9600002c b5ffff84 d600005e f4ffffe0  ,.......^.......
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00000660: 81000034 aaffff9d c5000020 e2ffffe9  4....... .......
00000670: 9c0000c1 b8ffffab dfffff06 f1000036  ............6...
00000680: 8dffff31 a0000094 cf000016 ec000007  1...............
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000006a0: 8d000029 a0000040 c2000024 e90000d9  )...@...$.......
000006b0: 9700000f befffeed da000000 f1ffffd3  ................
000006c0: 81000089 a9ffffff c800002f ea00000b  ......../.......
000006d0: 98000009 bcffff23 ddffff2d f5ffffd1  ....#...-.......
000006e0: 87ffffed ae00000c c8ffff8c ec00000d  ................
000006f0: 9cffffbb bbffffab d0ffff94 f4ffff6e  ............n...
00000700: 83ffffce a4000045 cf000022 ed000026  ....E..."...&...
00000710: 9a000048 bbffffb8 d8ffffa6 f0ffff76  H...........v...
00000720: 8c0000de a6000006 c1000070 e00000da  ........p.......
00000730: 9f0000d3 b3ffffba d2ffffe4 f4ffffb6  ................
00000740: 88ffffdb acfffff6 c2ffffe8 eeffffee  ................
00000750: 9800009e b0ffff4c d6ffff5c f40000a4  ....L...\.......
00000760: 8bffff99 a4fffffc c1ffffcf ec00004b  ............K...
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000007a0: 82ffffbf a3ffff6b cdffffd4 e7000051  ....k.......Q...
000007b0: 98ffffaa b1ffff8f d9ffffa3 f5000001  ................
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00000810: 9effffe9 b7ffff67 dcffff6c faffffa0  ....g...l.......
00000820: 8b00000e a7ffff9b cf00000a e2ffffb0  ................
00000830: 95000052 baffff29 dfffff80 faffff43  R...).......C...
00000840: 83ffffe7 a7ffffb7 cb000008 e4000086  ................
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00000880: 8f000090 a3ffffe7 c5ffffda ef000037  ............7...
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000008a0: 86000004 a2ffffd3 c800009d e7000028  ............(...
000008b0: 9900005f b7ffff65 deffff88 f7ffff5b  _...e.......[...
000008c0: 89ffffdd a3ffffcb c3000017 e0000049  ............I...
000008d0: 9d00005c beffffc8 d7ffff22 f3fffff0  \.......".......
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