diff --git a/notebooks/NB4a - Alternative Model (Preprocessing).ipynb b/notebooks/NB4a - Alternative Model (Preprocessing).ipynb
index 79d8d1fd..ab628b5a 100644
--- a/notebooks/NB4a - Alternative Model (Preprocessing).ipynb	
+++ b/notebooks/NB4a - Alternative Model (Preprocessing).ipynb	
@@ -20,7 +20,8 @@
     "import math, pickle, os, glob\n",
     "import numpy as np\n",
     "from utils.display import *\n",
-    "from utils.dsp import *"
+    "from utils.dsp import *\n",
+    "import soundfile as sf"
    ]
   },
   {
@@ -157,7 +158,7 @@
    "metadata": {},
    "outputs": [],
    "source": [
-    "librosa.output.write_wav(DATA_PATH + 'test_quant.wav', x, sr=sample_rate)"
+    "sf.write(DATA_PATH + 'test_quant.wav', x, sample_rate, subtype='PCM_24')"
    ]
   },
   {
diff --git a/requirements.txt b/requirements.txt
index aa7140a6..b0326613 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,6 +1,7 @@
 numpy==1.16.2
-librosa==0.6.3
+librosa
+soundfile
 matplotlib
 unidecode
 inflect
-nltk
\ No newline at end of file
+nltk
diff --git a/utils/dsp.py b/utils/dsp.py
index 885d34db..00c4384e 100644
--- a/utils/dsp.py
+++ b/utils/dsp.py
@@ -1,6 +1,7 @@
 import math
 import numpy as np
 import librosa
+import soundfile as sf
 from utils import hparams as hp
 from scipy.signal import lfilter
 
@@ -20,7 +21,7 @@ def load_wav(path):
 
 
 def save_wav(x, path):
-    librosa.output.write_wav(path, x.astype(np.float32), sr=hp.sample_rate)
+    sf.write(path, x.astype(np.float32), hp.sample_rate, subtype='PCM_24')
 
 
 def split_signal(x):