Lines Matching defs:peak
42 /* calculate peak-to-average amplitude */
62 * @return 0 if peak detected at right frequency,
63 * 1 if peak detected somewhere else
66 int check_peak(struct bat *bat, struct analyze *a, int end, int peak, float hz,
70 float hz_peak = (float) (peak) * hz;
75 fprintf(bat->log, _("Detected peak at %2.2f Hz of %2.2f dB\n"), hz_peak,
76 10.0 * log10f(a->mag[peak] / mean));
81 fprintf(bat->err, _(" WARNING: Found low peak %2.2f Hz,"),
109 int i, start = -1, end = -1, peak = 0, signals = 0;
130 /* find peak start points */
132 start = peak = end = i;
135 if (a->mag[i] > a->mag[peak])
136 peak = i;
141 /* Check if peak is as expected */
142 err |= check_peak(bat, a, end, peak, hz, mean,
150 err = -ENOPEAK; /* No peak detected */
154 err = -EBADPEAK; /* Bad peak detected */
156 err = 0; /* Correct peak detected */