Dolby Laboratories DP564 - page 97

DP564 Multichannel Audio Decoder Appendix B: Latency Values
B-3
Table B-2 IEC 61937 Specified Latency, with Respect to Beginning of Dolby Digital (AC-3) burst payload
Latency in Milliseconds
Data
Rate
in kbps Sample Rate:
48 kHz Sample Rate: 44.1 kHz Sample Rate: 32 kHz
56 6.11 6.73 9.75
64 6.22 6.86 10.00
80 6.44 7.12 10.50
96 6.67 7.38 11.00
112 6.89 7.65 11.50
128 7.11 7.91 12.00
160 7.56 8.44 13.00
192 8.00 8.96 14.00
224 8.44 9.49 15.00
256 8.89 10.02 16.00
320 9.78 11.07 18.00
384 10.67 12.12 20.00
448 11.56 13.18 22.00
512 12.44 14.23 24.00
576 13.33 15.28 26.00
640 14.22 16.34 28.00
PCM Latency
The DP564 offers two Bitstream Detection modes, Normal and Silent Switch, for
automatically identifying bitstream type. In the Silent Switch mode, an additional
latency is applied to an incoming PCM signal in order to detect bitstream type prior to
decoding. This allows the DP564 to minimize any audio artifacts that may occur
when switching between different bitstream types.
Table B-3 shows the additional latency applied to PCM bitstreams when decoded
using Silent Switch mode.
Table B-3 Additional Latency in Silent Switch Mode
Sample Rate Additional Latency in
Silent Switch Mode
48 kHz 32 ms
44.1 kHz 34.83 ms
32 kHz 48 ms