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musicinformationretrieval-com
Commit 312f83ee authored by Steve Tjoa's avatar Steve Tjoa
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pitch transcription, lsh

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notebooks/lsh_fingerprinting.ipynb
View file @ 312f83ee
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"../train/brahms_s1_1_perlman_02.wav 8.69369369369\n",
"../train/bach_p3_1_perlman_01.wav 8.22522522523\n",
"../train/Beethoven_vln_sonata5_Francescatti_05.wav 8.22413793103\n",
"../train/Beethoven_vln_sonata5_Francescatti_03.wav 7.79518072289\n",
"../train/brahms_s1_1_perlman_04.wav 7.40540540541\n",
"../train/brahms_s1_1_perlman_01.wav 7.31531531532\n",
"../train/Beethoven_vln_sonata5_Zukerman_03.wav 6.53684210526\n",
"../train/brahms_s1_1_perlman_05.wav 6.18918918919\n",
"../train/Beethoven_vln_sonata5_Zukerman_01.wav 6.15094339623\n",
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"../train/brandenburg3_01.wav 5.37688442211\n",
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"../train/konstantine.wav 4.87072243346\n",
"../train/Bach Vln Partita3 - Milstein 1955 - 01.wav 4.81233933162\n",
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"../train/Beethoven_vln_sonata5_Zukerman_04.wav 4.57391304348\n",
"../train/dont_stop_believin.wav 4.57256461233\n",
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"../train/bach_p3_1_heifetz_03.wav 3.02702702703\n",
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......
notebooks/pitch_transcription_answer.ipynb
View file @ 312f83ee
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notebooks/pitch_transcription_exercise.ipynb
View file @ 312f83ee
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"input": [
"import essentia.standard as ess\n",
"loader = ess.MonoLoader(filename='default.wav', sampleRate=44100)\n",
"loader = ess.MonoLoader(filename='../test/test.wav', sampleRate=44100)\n",
"signal_in = loader()"
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"from IPython.display import Audio\n",
"Audio(data=signal_in, rate=44100)"
"#Audio(data=signal_in, rate=44100)"
],
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......@@ -55,6 +57,80 @@
"Find each note and its pitch."
]
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"input": [
"def get_onsets(signal_in):\n",
" onset_times, onset_rate = ess.OnsetRate()(signal_in)\n",
" return onset_times"
],
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"yin = ess.PitchYinFFT()\n",
"spectrum = ess.Spectrum()\n",
"\n",
"def get_pitch(segment):\n",
" if len(segment) < 4096:\n",
" N = len(segment) if len(segment) % 2 == 0 else len(segment) - 1\n",
" else:\n",
" N = 4096\n",
" pitch, pitch_conf = yin(spectrum(segment[:N]))\n",
" return pitch"
],
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"input": [
"def generate_sine(pitch, n_duration):\n",
" #print midi, f0\n",
" n = arange(n_duration)\n",
" return 0.2*sin(2*pi*pitch*n/44100.0)"
],
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"input": [
"def transcribe_pitch(signal_in):\n",
" \n",
" signal_out = zeros(len(signal_in))\n",
" \n",
" # get onsets\n",
" onsets = get_onsets(signal_in)\n",
" \n",
" # get pitches\n",
" for i in range(len(onsets)-1):\n",
" n0 = int(onsets[i]*44100)\n",
" n1 = int(onsets[i+1]*44100)\n",
" pitch = get_pitch(signal_in[n0:n1])\n",
" \n",
" signal_out[n0:n1] = generate_sine(pitch, n1-n0)\n",
" \n",
" return signal_out\n",
" "
],
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......@@ -63,7 +139,8 @@
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......@@ -77,11 +154,24 @@
"cell_type": "code",
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"input": [
"Audio(data=signal_out, rate=44100)"
"import essentia\n",
"#Audio(data=signal_out, rate=44100)\n",
"signal_out = sum([signal_out, signal_in], axis=0)\n",
"ess.MonoWriter(filename='../test/out.wav')(essentia.array(signal_out))"
],
"language": "python",
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......
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