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Track peak RMS location in seconds #5

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Track peak RMS location in seconds #5

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14 changes: 9 additions & 5 deletions src/stats.c
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Original file line number Diff line number Diff line change
Expand Up @@ -23,9 +23,9 @@ typedef struct {
int scale_bits, hex_bits;
double time_constant, scale;

double last, sigma_x, sigma_x2, avg_sigma_x2, min_sigma_x2, max_sigma_x2;
double last, sigma_x, sigma_x2, avg_sigma_x2, min_sigma_x2, max_sigma_x2, max_sigma_x2_time;
double min, max, mult, min_run, min_runs, max_run, max_runs;
off_t num_samples, tc_samples, min_count, max_count;
off_t num_samples, tc_samples, min_count, max_count, peak_rms_time;
uint32_t mask;
} priv_t;

Expand Down Expand Up @@ -98,8 +98,10 @@ static int flow(sox_effect_t * effp, const sox_sample_t * ibuf,
p->avg_sigma_x2 = p->avg_sigma_x2 * p->mult + (1 - p->mult) * sqr(d);

if (p->num_samples >= p->tc_samples) {
if (p->avg_sigma_x2 > p->max_sigma_x2)
p->max_sigma_x2 = p->avg_sigma_x2;
if (p->avg_sigma_x2 > p->max_sigma_x2) {
p->peak_rms_time = p->num_samples;
p->max_sigma_x2 = p->avg_sigma_x2;
}
if (p->avg_sigma_x2 < p->min_sigma_x2)
p->min_sigma_x2 = p->avg_sigma_x2;
}
Expand Down Expand Up @@ -162,7 +164,7 @@ static int stop(sox_effect_t * effp)

if (!effp->flow) {
double min_runs = 0, max_count = 0, min = 2, max = -2, max_sigma_x = 0, sigma_x = 0, sigma_x2 = 0, min_sigma_x2 = 2, max_sigma_x2 = 0, avg_peak = 0;
off_t num_samples = 0, min_count = 0, max_runs = 0;
off_t num_samples = 0, min_count = 0, max_runs = 0, max_sigma_x2_time = 0;
uint32_t mask = 0;
unsigned b1, b2, i, n = effp->flows > 1 ? effp->flows : 0;

Expand All @@ -174,6 +176,7 @@ static int stop(sox_effect_t * effp)
q->min_sigma_x2 = q->max_sigma_x2 = q->sigma_x2 / q->num_samples;
min_sigma_x2 = min(min_sigma_x2, q->min_sigma_x2);
max_sigma_x2 = max(max_sigma_x2, q->max_sigma_x2);
max_sigma_x2_time = max(max_sigma_x2_time, q->peak_rms_time);
sigma_x += q->sigma_x;
sigma_x2 += q->sigma_x2;
num_samples += q->num_samples;
Expand Down Expand Up @@ -240,6 +243,7 @@ static int stop(sox_effect_t * effp)
priv_t * q = (priv_t *)(effp - effp->flow + i)->priv;
fprintf(stderr, "%10.2f", linear_to_dB(sqrt(q->max_sigma_x2)));
}
fprintf(stderr, "\nRMS Pk s %9.3f", max_sigma_x2_time / effp->in_signal.rate);

fprintf(stderr, "\nRMS Tr dB ");
if (min_sigma_x2 != 1)
Expand Down