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8.24 format

SigmaDSP & SigmaStudio alex239 Nov 29, 2018 00:00 1 replies Original on forum ↗
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alex239 Question
Nov 29, 2018 00:00

In wiki 8.24 format heve some different number of bytes.

Its from wiki 8.24

1111 1110 0000 0000 0000 0000 0000 = -0.25
28 bit in example

0000 0000 1000 0000 0000 0000 0000 0000 = 2^23 - 1 LSB = 0dBFS
Its from representation.

Ken.M Reply
Nov 29, 2018 00:00

Alex,

In the word:

1111 1110 0000 0000 0000 0000 0000 = -0.25
...there is one nibble missing from the front (there are seven shown instead of 8). The correct value is:

1111 1111 1110 0000 0000 0000 0000 0000 = -0.25
This puts 8 bits to the left of the binary point and 24 bits after (8.24). Note that the number is in 2's complement format, so the number is sign extended. i have fixed the wiki page.

Ken