Example Audio API

Example.ipynb

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      "/home/bmooreii/.local/lib/python3.7/site-packages/numba/errors.py:131: UserWarning: Insufficiently recent colorama version found. Numba requires colorama >= 0.3.9\n",
      "  warnings.warn(msg)\n"
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   "source": [
    "from librosa import load\n",
    "from soundfile import write"
   ]
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   "source": [
    "class Audio:\n",
    "    def __init__(self, samples, sample_rate):\n",
    "        self.samples = samples\n",
    "        self.sample_rate = sample_rate\n",
    "    \n",
    "    @classmethod\n",
    "    def from_file(cls, path, sample_rate=22050):\n",
    "        samples, sr = load(path, sr=sample_rate)\n",
    "        return cls(samples, sr)\n",
    "    \n",
    "    # from_bytesio -- for reading using Microsoft container\n",
    "    # other rarely used loading methods\n",
    "    \n",
    "    def trim(self, start_time, end_time):\n",
    "        start_sample = int(start_time * self.sample_rate)\n",
    "        end_sample = int(end_time * self.sample_rate)\n",
    "        samples_trimmed = self.samples[start_sample:end_sample]\n",
    "        return Audio(samples_trimmed, self.sample_rate)\n",
    "    \n",
    "    def save(self, fname):\n",
    "        write(fname, self.samples, self.sample_rate)"
   ]
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   "cell_type": "code",
   "execution_count": 3,
   "metadata": {},
   "outputs": [],
   "source": [
    "audio = Audio.from_file(\"voice_ringing.wav\") \\\n",
    "             .trim(0, 1) \\\n",
    "             .save(\"second.wav\")"
   ]
  }
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