From 5c4849be1c44555834fcfaf77103ccaeb885de96 Mon Sep 17 00:00:00 2001 From: Roman Zeyde Date: Fri, 16 Jan 2015 12:46:29 +0200 Subject: [PATCH] detect: remove unused code since we now compensate for frequency drift, these estimates may be too pessimistic. --- amodem/detect.py | 9 ++------- 1 file changed, 2 insertions(+), 7 deletions(-) diff --git a/amodem/detect.py b/amodem/detect.py index 978ab68..31e2db4 100644 --- a/amodem/detect.py +++ b/amodem/detect.py @@ -54,14 +54,9 @@ class Detector(object): length = (self.CARRIER_THRESHOLD - 1) * self.Nsym begin = offset - length - x = np.concatenate(tuple(bufs)[-self.CARRIER_THRESHOLD:-1]) - Hc = dsp.exp_iwt(-self.omega, len(x)) - amplitude = np.abs(np.dot(Hc, x) / (0.5 * len(x))) start_time = begin * self.Tsym / self.Nsym - log.info('Carrier detected at ~%.1f ms @ %.1f kHz:' - ' coherence=%.3f%%, amplitude=%.3f', - start_time * 1e3, self.freq / 1e3, - np.abs(dsp.coherence(x, self.omega)) * 100, amplitude) + log.info('Carrier detected at ~%.1f ms @ %.1f kHz', + start_time * 1e3, self.freq / 1e3) log.debug('Buffered %d ms of audio', len(bufs))