From: Paul Brossier <piem@piem.org>
Date: Fri, 9 Nov 2018 18:14:26 +0000 (+0100)
Subject: [filterbank] add a warning for duplicate freqs, improve nyquist warning
X-Git-Tag: 0.4.8~61
X-Git-Url: https://git.aubio.org/?p=aubio.git;a=commitdiff_plain;h=9ef3c6e531d0b937f18abc3aacd550946c682ace

[filterbank] add a warning for duplicate freqs, improve nyquist warning
---

diff --git a/src/spectral/filterbank_mel.c b/src/spectral/filterbank_mel.c
index b340a137..8a8d85af 100644
--- a/src/spectral/filterbank_mel.c
+++ b/src/spectral/filterbank_mel.c
@@ -60,11 +60,14 @@ aubio_filterbank_set_triangle_bands (aubio_filterbank_t * fb,
       return AUBIO_FAIL;
     } else if (freqs->data[fn] > samplerate / 2) {
       AUBIO_WRN("filterbank_mel: freqs should contain only "
-          "values > samplerate / 2.\n");
+          "values < samplerate / 2.\n");
     } else if (fn > 0 && freqs->data[fn] < freqs->data[fn-1]) {
       AUBIO_ERR("filterbank_mel: freqs should be a list of frequencies "
           "sorted from low to high, but freq[%d] < freq[%d-1]\n", fn, fn);
       return AUBIO_FAIL;
+    } else if (fn > 0 && freqs->data[fn] == freqs->data[fn-1]) {
+      AUBIO_WRN("filterbank_mel: set_triangle_bands received a list "
+          "with twice the frequency %f\n", freqs->data[fn]);
     }
   }