On 4/14/19 10:42 AM, Carl Zwanzig wrote:
On 4/14/2019 7:14 AM, Deron wrote:
What appears to happen is some audio timestamp drift error is
noticed, compensation is applied that perhaps has a math sign error,
a whole lot of silence is inserted, the incoming data is ignored
because of that silence, and the input buffer is overflowed.
I wonder, and this is just a WAG, if that stream has enough
uncorrected bit errors spread around that the demux/decoder can't
figure out where the data blocks start and then picks a likely spot
that's wrong. Can you pick out the error stats for different channels
and compare them?
z!
Could errors in the data stream produce such repeatable results?
I don't know how accurate azap's status is, but I see no uncorrected
blocks and reported signal strength is perfect.
status 1f | signal ffff | snr 0130 | ber ffffffff | unc 00000000 |
FE_HAS_LOCK
status 1f | signal ffff | snr 012a | ber ffffffff | unc 00000000 |
FE_HAS_LOCK
status 1f | signal ffff | snr 012a | ber ffffffff | unc 00000000 |
FE_HAS_LOCK
Here is some other station's output that do not suffer this problem.
status 1f | signal ffff | snr 0143 | ber ffffffff | unc 00000000 |
FE_HAS_LOCK
status 1f | signal ffff | snr 0143 | ber ffffffff | unc 00000000 |
FE_HAS_LOCK
status 1f | signal ffff | snr 0147 | ber ffffffff | unc 00000000 |
FE_HAS_LOCK
....
status 1f | signal eb84 | snr 00e3 | ber ffffffff | unc 00000000 |
FE_HAS_LOCK
status 1f | signal eb84 | snr 00e8 | ber ffffffff | unc 00000000 |
FE_HAS_LOCK
status 1f | signal eb84 | snr 00e8 | ber ffffffff | unc 00000000 |
FE_HAS_LOCK
....
status 1f | signal ffff | snr 0140 | ber ffffffff | unc 00000000 |
FE_HAS_LOCK
status 1f | signal ffff | snr 0140 | ber ffffffff | unc 00000000 |
FE_HAS_LOCK
status 1f | signal ffff | snr 0140 | ber ffffffff | unc 00000000 |
FE_HAS_LOCK
...
status 1f | signal ffff | snr 0117 | ber ffffffff | unc 00000000 |
FE_HAS_LOCK
status 1f | signal ffff | snr 0116 | ber ffffffff | unc 00000000 |
FE_HAS_LOCK
status 1f | signal ffff | snr 0119 | ber ffffffff | unc 00000000 |
FE_HAS_LOCK
Thanks for your WAG. Anyone with another?
Deron
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