393 lines
20 KiB
Plaintext
393 lines
20 KiB
Plaintext
{
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"cells": [
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{
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"cell_type": "markdown",
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"metadata": {},
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"source": [
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"**LIBARRY**"
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]
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},
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{
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"cell_type": "code",
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"execution_count": 9,
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"metadata": {},
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"outputs": [],
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"source": [
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"import librosa\n",
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"import numpy as np\n",
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"import os\n",
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"import joblib\n",
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"import pandas as pd"
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]
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},
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{
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"cell_type": "markdown",
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"metadata": {},
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"source": [
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"**PATH DATASET**"
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]
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},
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{
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"cell_type": "code",
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"execution_count": 10,
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"metadata": {},
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"outputs": [],
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"source": [
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"# Path dataset hasil preprocessing\n",
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"DATASET_PATH = \"preprocessing_data_v2\"\n",
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"OUTPUT_FOLDER = \"E:\\! KULIAHHH\\Ivano Kuliah\\!SEMESTER 8\\!SKRIPSI\\Data Suara\\!REVISI\\hasil_ekstrak_mfcc_v2\"\n",
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"\n",
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"# Buat folder output jika belum ada\n",
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"os.makedirs(OUTPUT_FOLDER, exist_ok=True)\n",
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"\n",
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"# Path penyimpanan file hasil ekstraksi\n",
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"OUTPUT_FEATURES = os.path.join(OUTPUT_FOLDER, \"X_train.npy\")\n",
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"OUTPUT_LABELS = os.path.join(OUTPUT_FOLDER, \"y_train.npy\")"
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]
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},
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{
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"cell_type": "markdown",
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"metadata": {},
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"source": [
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"**PARAMETER MFCC**"
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]
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},
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{
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"cell_type": "code",
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"execution_count": 11,
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"metadata": {},
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"outputs": [],
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"source": [
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"# Parameter MFCC\n",
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"SAMPLE_RATE = 48000\n",
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"N_MFCC = 40 # Jumlah koefisien MFCC yang diambil\n",
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"N_FFT = 4096 # Panjang FFT\n",
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"HOP_LENGTH = 512 # Hop size\n",
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"\n",
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"X = [] # Menyimpan fitur MFCC\n",
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"y = [] # Menyimpan label kata"
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]
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},
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{
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"cell_type": "markdown",
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"metadata": {},
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"source": [
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"**FUNGSI EKSTRASI MFCC**"
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]
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},
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{
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"cell_type": "code",
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"execution_count": 12,
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"metadata": {},
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"outputs": [
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{
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"name": "stdout",
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"output_type": "stream",
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"text": [
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"Ekstraksi MFCC selesai. Dataset tersimpan di folder 'E:\\! KULIAHHH\\Ivano Kuliah\\!SEMESTER 8\\!SKRIPSI\\Data Suara\\!REVISI\\hasil_ekstrak_mfcc_v2'.\n"
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]
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}
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],
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"source": [
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"def extract_mfcc(file_path):\n",
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" \"\"\"Ekstraksi fitur MFCC dari file audio.\"\"\"\n",
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" y_audio, sr = librosa.load(file_path, sr=SAMPLE_RATE)\n",
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" mfcc = librosa.feature.mfcc(y=y_audio, sr=sr, n_mfcc=N_MFCC, n_fft=N_FFT, hop_length=HOP_LENGTH, lifter=22)\n",
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" return np.mean(mfcc, axis=1) # Rata-rata per koefisien\n",
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"\n",
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"file_names = [] # Tambahan untuk menyimpan nama file\n",
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"\n",
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"# Looping folder Positif dan Negatif\n",
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"for label_folder in os.listdir(DATASET_PATH):\n",
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" label_path = os.path.join(DATASET_PATH, label_folder)\n",
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"\n",
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" if os.path.isdir(label_path):\n",
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" for file_name in os.listdir(label_path):\n",
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" if file_name.endswith(\".wav\"):\n",
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" file_path = os.path.join(label_path, file_name)\n",
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" mfcc_features = extract_mfcc(file_path)\n",
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"\n",
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" X.append(mfcc_features)\n",
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" y.append(label_folder)\n",
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" file_names.append(f\"{label_folder}/{file_name}\") # Simpan dengan labelnya biar mudah dilacak\n",
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"\n",
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" print(f\"Processed: {label_folder}/{file_name} → Label: {label_folder}\")\n",
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"\n",
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"# Konversi ke array numpy\n",
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"X = np.array(X)\n",
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"y = np.array(y)\n",
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"\n",
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"# Simpan hasil\n",
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"np.save(OUTPUT_FEATURES, X)\n",
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"np.save(OUTPUT_LABELS, y)\n",
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"np.save(os.path.join(OUTPUT_FOLDER, \"file_names.npy\"), np.array(file_names)) # Tambahan\n",
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"\n",
|
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"print(f\"Ekstraksi MFCC selesai. Dataset tersimpan di folder '{OUTPUT_FOLDER}'.\")"
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]
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}
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|
],
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"metadata": {
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"kernelspec": {
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"display_name": "Python 3",
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"language": "python",
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"name": "python3"
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},
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"language_info": {
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"codemirror_mode": {
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"name": "ipython",
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"version": 3
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},
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"file_extension": ".py",
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"mimetype": "text/x-python",
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"name": "python",
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"nbconvert_exporter": "python",
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"pygments_lexer": "ipython3",
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"version": "3.10.0"
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}
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},
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"nbformat": 4,
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"nbformat_minor": 2
|
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}
|