The issue is with libarchive, installed libarchive-tools and trying to extract the archive with bsdtar gives that
'# bsdtar -xf TestWavFile.7z
TestWavFile/Sweep_1Hz_44000Hz_-3dBFS_30s.wav: 7-Zip bad CRC: 0x5f2fe0a4 should be 0x2a268c5a
TestWavFile/Sweep_1Hz_48000Hz_-3dBFS_30s.wav: 7-Zip bad CRC: 0x48c4d6a2 should be 0xb05eb55d
TestWavFile/Sweep_1Hz_88000Hz_-3dBFS_30s.wav: 7-Zip bad CRC: 0x3f9e0eb1 should be 0xc82c61f7
TestWavFile/Sweep_1Hz_96000Hz_-3dBFS_30s.wav: 7-Zip bad CRC: 0xef123101 should be 0x79650d07
TestWavFile/cuts_like_a_knife_44KHz_16bit_stereo_SMALL.wav: 7-Zip bad CRC: 0x9c17a479 should be 0x2aed26ef
bsdtar: Error exit delayed from previous errors.'
installing p7zip-full and extracting with it indeed gives different file content (which is what file-roller is doing)
The issue is with libarchive, installed libarchive-tools and trying to extract the archive with bsdtar gives that
'# bsdtar -xf TestWavFile.7z Sweep_1Hz_ 44000Hz_ -3dBFS_ 30s.wav: 7-Zip bad CRC: 0x5f2fe0a4 should be 0x2a268c5a Sweep_1Hz_ 48000Hz_ -3dBFS_ 30s.wav: 7-Zip bad CRC: 0x48c4d6a2 should be 0xb05eb55d Sweep_1Hz_ 88000Hz_ -3dBFS_ 30s.wav: 7-Zip bad CRC: 0x3f9e0eb1 should be 0xc82c61f7 Sweep_1Hz_ 96000Hz_ -3dBFS_ 30s.wav: 7-Zip bad CRC: 0xef123101 should be 0x79650d07 cuts_like_ a_knife_ 44KHz_16bit_ stereo_ SMALL.wav: 7-Zip bad CRC: 0x9c17a479 should be 0x2aed26ef
TestWavFile/
TestWavFile/
TestWavFile/
TestWavFile/
TestWavFile/
bsdtar: Error exit delayed from previous errors.'
installing p7zip-full and extracting with it indeed gives different file content (which is what file-roller is doing)