From 88ca9e6f033f9959d0a6ef3e47a81139a2dfdd1d Mon Sep 17 00:00:00 2001 From: Leah Rowe Date: Thu, 12 Mar 2026 23:18:26 +0000 Subject: util/spkmodem-decode: guard against silence in tone-detect Signed-off-by: Leah Rowe --- util/spkmodem_decode/spkmodem-decode.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) (limited to 'util') diff --git a/util/spkmodem_decode/spkmodem-decode.c b/util/spkmodem_decode/spkmodem-decode.c index 7e199430..6c7c03df 100644 --- a/util/spkmodem_decode/spkmodem-decode.c +++ b/util/spkmodem_decode/spkmodem-decode.c @@ -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; -- cgit v1.2.1