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fix #39

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Make the two point for hash with little delta of time
This commit is contained in:
suxianbaozi 2014-03-04 16:44:35 +08:00
parent 1e3dbe8eaf
commit f41d036d45
1 changed files with 2 additions and 2 deletions
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4
dejavu/fingerprint.py
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@ -18,7 +18,7 @@ DEFAULT_FAN_VALUE = 15
DEFAULT_AMP_MIN = 10 DEFAULT_AMP_MIN = 10
PEAK_NEIGHBORHOOD_SIZE = 20 PEAK_NEIGHBORHOOD_SIZE = 20
MIN_HASH_TIME_DELTA = 0 MIN_HASH_TIME_DELTA = 0
MAX_HASH_TIME_DELTA = 200
def fingerprint(channel_samples, Fs=DEFAULT_FS, def fingerprint(channel_samples, Fs=DEFAULT_FS,
wsize=DEFAULT_WINDOW_SIZE, wsize=DEFAULT_WINDOW_SIZE,
@ -108,7 +108,7 @@ def generate_hashes(peaks, fan_value=DEFAULT_FAN_VALUE):
t_delta = t2 - t1 t_delta = t2 - t1
if t_delta >= MIN_HASH_TIME_DELTA: if t_delta >= MIN_HASH_TIME_DELTA and t_delta <= MAX_HASH_TIME_DELTA:
h = hashlib.sha1( h = hashlib.sha1(
"%s|%s|%s" % (str(freq1), str(freq2), str(t_delta)) "%s|%s|%s" % (str(freq1), str(freq2), str(t_delta))
) )