diff options
| -rw-r--r-- | util/spkmodem_recv/spkmodem-recv.c | 6 |
1 files changed, 2 insertions, 4 deletions
diff --git a/util/spkmodem_recv/spkmodem-recv.c b/util/spkmodem_recv/spkmodem-recv.c index 5f06b3b7..0614d103 100644 --- a/util/spkmodem_recv/spkmodem-recv.c +++ b/util/spkmodem_recv/spkmodem-recv.c @@ -23,9 +23,7 @@ signed short frame[2 * SAMPLES_PER_FRAME]; signed short pulse[2 * SAMPLES_PER_FRAME]; -int ringpos = 0; int f1, f2; -int amplitude = 0; int lp = 0; int ascii_bit = 7; char ascii = 0; @@ -77,14 +75,14 @@ handle_audio(void) void fetch_sample(void) { - amplitude -= abs(frame[ringpos]); + static int ringpos = 0; + f1 -= pulse[ringpos]; f1 += pulse[(ringpos + SAMPLES_PER_FRAME) % (2 * SAMPLES_PER_FRAME)]; f2 -= pulse[(ringpos + SAMPLES_PER_FRAME) % (2 * SAMPLES_PER_FRAME)]; if (fread(frame + ringpos, 1, sizeof(frame[0]), stdin) != sizeof(frame[0])) err(errno = ECANCELED, "Could not read frame."); - amplitude += abs(frame[ringpos]); if (abs(frame[ringpos]) > THRESHOLD) { /* rising/falling edge(pulse) */ pulse[ringpos] = 1; |