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util/spkmodem-decode: guard against silence in tone-detect

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Signed-off-by: Leah Rowe <leah@libreboot.org>
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Leah Rowe
2026-03-12 23:18:26 +00:00
parent a81dde3d08
commit 7e29d53667
1 changed files with 3 additions and 1 deletions
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util/spkmodem_decode/spkmodem-decode.c
+3 -1
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@@ -482,7 +482,9 @@ auto_detect_tone(struct decoder_state *st)
f = st->freq_data;
if (st->freq_separator > 0 && st->freq_separator < f)
f = st->freq_separator;
if (f > 0) {
if (f > 0 || /* prevent noise from corrupting tone-learning */
st->freq_data > 2 || /* <--- stop from */
st->freq_separator > 2) { /* learning silence if no signal */
if (f < st->freq_min)
st->freq_min = f;