clean-up

scan/dft_detect.c

@@ -168,8 +168,6 @@ static float *ws_lpIQ[2];
 static int dsp__lpIQtaps; // ui32_t
 static float complex *lpIQ_buf;
 
-static float complex *iq_buf;
-
 
 static void dft_raw(float complex *Z) {
     int s, l, l2, i, j, k;
@@ -981,8 +979,6 @@ static int free_buffers() {
         }
         if (Y) { free(Y); Y = NULL; }
 
-        if (iq_buf) { free(iq_buf); iq_buf = NULL; }
-
         for (j = 0; j < 1; j++) {
             if (ws_lpIQ[j]) { free(ws_lpIQ[j]); ws_lpIQ[j] = NULL; }
         }

scan/scan_fft_pow.c

@@ -610,7 +610,12 @@ int main(int argc, char **argv) {
         if ( mag < 0 ) mag = 0;
         if (1 || option_verbose) fprintf(fpout, " ; %d", mag);
 
-        if (mag0 > 0 && mag == 0) fprintf(OUT, "peak: %+9.6f = %+9.1fHz\n", bin2fq(&DFT, max_db_idx), bin2freq(&DFT, max_db_idx));
+        if (mag0 > 0 && mag == 0) {
+            if ( fabs(bin2fq(&DFT, max_db_idx)) < 0.425 ) // 85% bandwidth
+            {
+                fprintf(OUT, "peak: %+9.6f = %+9.1fHz\n", bin2fq(&DFT, max_db_idx), bin2freq(&DFT, max_db_idx));
+            }
+        }
         if (mag0 == 0 && mag > 0) {
             max_db_loc = sympeak;
             max_db_idx = j % DFT.N;