Commit 2cd201c

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Update chapter 11

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+14

-9

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+14

-9

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Lines changed: 7 additions & 6 deletions

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Original file line number	Diff line number	Diff line change
`@@ -14,6 +14,7 @@`
`14`	`14`	`"outputs": [],`
`15`	`15`	`"source": [`
`16`	`16`	`"from io import BytesIO\n",`
	`17`	`+ "import tempfile\n",`
`17`	`18`	`"import requests\n",`
`18`	`19`	`"import numpy as np\n",`
`19`	`20`	`"import scipy.signal as sg\n",`
`@@ -32,9 +33,10 @@`
`32`	`33`	`"def speak(data):\n",`
`33`	`34`	`" # We convert the mp3 bytes to wav.\n",`
`34`	`35`	`" audio = pydub.AudioSegment.from_mp3(BytesIO(data))\n",`
`35`		`- " wave = audio.export('_', format='wav')\n",`
`36`		`- " wave.seek(0)\n",`
`37`		`- " wave = wave.read()\n",`
	`36`	`+ " with tempfile.TemporaryFile() as fn:\n",`
	`37`	`+ " wavef = audio.export(fn, format='wav')\n",`
	`38`	`+ " wavef.seek(0)\n",`
	`39`	`+ " wave = wavef.read()\n",`
`38`	`40`	`" # We get the raw data by removing the 24 first bytes\n",`
`39`	`41`	`" # of the header.\n",`
`40`	`42`	`" x = np.frombuffer(wave, np.int16)[24:] / 2.**15\n",`

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`@@ -114,8 +114,10 @@`
`114`	`114`	`" # in a dedicated Output widget.\n",`
`115`	`115`	`" with widgets.Output():\n",`
`116`	`116`	`" synth(f)\n",`
	`117`	`+ "\n",`
`117`	`118`	`" button.on_click(partial(on_button_clicked, f))\n",`
`118`	`119`	`" buttons.append(button)\n",`
	`120`	`+ "\n",`
`119`	`121`	`"# We place all buttons horizontally.\n",`
`120`	`122`	`"widgets.Box(children=buttons)"`
`121`	`123`	`]`

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