Ajout training nofold + base test google

TEST_GOOGLE_representation.ipynb

+%% Cell type:code id:israeli-hometown tags:
+
+``` python
+import numpy as np
+import os
+import pandas as pd
+from scipy.io import wavfile
+import matplotlib.pyplot as plt
+```
+
+%% Cell type:code id:waiting-today tags:
+
+``` python
+samplerate, data = wavfile.read('./7061-6-0-0.wav')
+```
+
+%% Cell type:code id:computational-europe tags:
+
+``` python
+import leaf_audio.frontend as frontend
+
+leaf = frontend.Leaf()
+melfbanks = frontend.MelFilterbanks()
+tfbanks = frontend.TimeDomainFilterbanks()
+sincnet = frontend.SincNet()
+sincnet_plus = frontend.SincNetPlus()
+```
+
+%%%% Output: stream
+
+    WARNING:absl:Lingvo does not support eager execution yet. Please disable eager execution with tf.compat.v1.disable_eager_execution() or proceed at your own risk.
+
+%% Cell type:code id:disciplinary-brain tags:
+
+``` python
+type(data)
+```
+
+%%%% Output: execute_result
+
+    numpy.ndarray
+
+%% Cell type:code id:compound-diesel tags:
+
+``` python
+data = data.astype('float')
+```
+
+%% Cell type:code id:sustained-default tags:
+
+``` python
+data.dtype
+```
+
+%%%% Output: execute_result
+
+    dtype('float64')
+
+%% Cell type:code id:developmental-lounge tags:
+
+``` python
+leaf_representation = leaf(data)
+melfbanks_representation = melfbanks(data)
+```
+
+%% Cell type:code id:fuzzy-helmet tags:
+
+``` python
+type(melfbanks_representation)
+```
+
+%%%% Output: execute_result
+
+    tensorflow.python.framework.ops.EagerTensor
+
+%% Cell type:code id:funny-emperor tags:
+
+``` python
+leaf_representation
+t= melfbanks_representation.numpy
+```
+
+%% Cell type:code id:raising-stephen tags:
+
+``` python
+t
+```
+
+%%%% Output: execute_result
+
+    <bound method _EagerTensorBase.numpy of <tf.Tensor: shape=(99225, 1, 40), dtype=float32, numpy=
+    array([[[-11.512925, -11.512925, -11.512925, ..., -11.512925,
+             -11.512925, -11.512925]],
+    
+           [[-11.512925, -11.512925, -11.512925, ..., -11.512925,
+             -11.512925, -11.512925]],
+    
+           [[-11.512925, -11.512925, -11.512925, ..., -11.512925,
+             -11.512925, -11.512925]],
+    
+           ...,
+    
+           [[-11.512925, -11.512925, -11.512925, ..., -11.512925,
+             -11.512925, -11.512925]],
+    
+           [[-11.512393, -11.512265, -11.512299, ..., -11.507828,
+             -11.507522, -11.507188]],
+    
+           [[-11.512925, -11.512925, -11.512925, ..., -11.512925,
+             -11.512925, -11.512925]]], dtype=float32)>>
+
+%% Cell type:code id:dressed-present tags:
+
+``` python
+```