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coding: fix decoding of EFR triplicated bits 

In GSM 05.03 channel coding for EFR, there are 4 bits out of the
244-bit EFR codec frame that are triplicated before FR-like encoding,
and the decoder needs to apply a 2-out-of-3 majority voting function
to each of these triplicated bits after the FR-like decoding step.
For one of those 4 bits, this majority voting function was wrong
in the decoder implemented in gsm0503_tch_fr_decode() - fix it.

Change-Id: I47def75cdb066ed6372df4567404cc828589ed53
This commit is contained in:
Mychaela N. Falconia 2023-05-17 18:58:40 +00:00 committed by laforge
parent d9d61b0188
commit f3e4745603
1 changed files with 1 additions and 1 deletions
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2
src/coding/gsm0503_coding.c
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@ -1804,7 +1804,7 @@ static void tch_efr_unreorder(ubit_t *s, ubit_t *p, const ubit_t *w)
s[119] = (sum >= 2);
memcpy(s + 121, w + 125, 53);
sum = s[172] + w[178] + w[179];
s[172] = (sum > 2);
s[172] = (sum >= 2);
memcpy(s + 174, w + 180, 50);
sum = s[222] + w[230] + w[231];
s[222] = (sum >= 2);