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Lower super_tone_rx DETECTION_THRESHOLD by a factor of 128

This commit is contained in:
Christopher Rienzo 2012-02-10 13:17:54 +00:00
parent 674dc9850b
commit fdaa155b99
1 changed files with 1 additions and 1 deletions
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2
libs/spandsp/src/super_tone_rx.c
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@ -60,7 +60,7 @@
#define TONE_TWIST 4 /* 6dB */
#define TONE_TO_TOTAL_ENERGY 64 /* -3dB */
#else
#define DETECTION_THRESHOLD 269338317.0f /* -42dBm0 [((128.0*32768.0/1.4142)*10^((-42 - DBM0_MAX_SINE_POWER)/20.0))^2 => 269338317.0] */
#define DETECTION_THRESHOLD 2104205.6f /* -42dBm0 [(((128.0*32768.0/1.4142)*10^((-42 - DBM0_MAX_SINE_POWER)/20.0))^2)/128 => 2104205.6] */
#define TONE_TWIST 3.981f /* 6dB */
#define TONE_TO_TOTAL_ENERGY 1.995f /* 3dB */
#define DTMF_TO_TOTAL_ENERGY 64.152f /* -3dB [BINS*10^(-3/10.0)] */