Svantek SV 977D - Date and Time (Example Decoding Procedure)

237
SV 977D User Manual - Appendixes
Word
number
Name
Comment
i*4+3
F1_index[i]
left boundary of the critical bandwidth, line index
i*4+4
F2_index[i]
right boundary of the critical bandwidth, line index
i*4+5
Lt[i]
tone level in the format 0.01 dB
i*4+6
Ls[i]
averaged signal level of the tone in the format 0.01 dB
i*4+7
Lg[i]
noise level of the tone in the format 0.01 dB
i*4+8
av[i]
masking index of the tone in the format 0.01 dB
i*4+9
Kt[i]
Spectrum level tuning in dB
i*4+10
sigma[i]
measurement uncertainty in the format 0.01 dB
…
reserved
Table B.56. Tonality partial results for postprocessing (ISO 20065:2016)
Word
number
Name
Comment
0
0073h
73h = block identifier
1
BlockLength
block length in words
2
L[maxToneIndex]
partial L(max) result for post-processing, 0.01 dB
3
sigma[maxToneIndex]
partial sigma result (max) for post-processing, 0.01 dB
B.4. DATE AND TIME (EXAMPLE DECODING PROCEDURE)
Following function written in C explain how the date and time are coded:
void ExtractDateTime(int date, unsigned int time, int dt[])
{
dt[0] = time % 30; /* sec */
dt[1] = (time/30) % 60; /* min */
dt[2] = time/1800; /* hour */
dt[3] = date & 0x001F; /* day */
dt[4] = (date>>5) & 0x000F; /* month */
dt[5] = ((date>>9) & 0x007F) + 2000; /* year */
}