✎ pocketsphinx [Wiki ubuntu-fr]

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====== Pocketsphinx ======

**Pocketsphinx** est une librairie permettant d'intégrer la reconnaissance vocale dans vos projets écrit en language C à l'aide des fonctionnalités du projet open source [[http://cmusphinx.sourceforge.net/|CMUSphinx]].

===== Installation =====
==== À partir des dépôts ====

[[:tutoriel:comment_installer_un_paquet|Installer les paquets]] **[[apt>python-pocketsphinx libpocketsphinx1 gstreamer0.10-pocketsphinx python-pyaudio]]**.

Ou dans un [[:terminal]] avec les droits [[:sudo|administrateurs]] :
<code>
sudo apt-get install python-pocketsphinx libpocketsphinx1 gstreamer0.10-pocketsphinx python-pyaudio
</code>

==== À partir des sources ====
D'abord il faut installer les dépendances dans un [[:terminal]] avec les droits [[:sudo|administrateurs]] :
<code>
sudo apt-get build-dep pocketsphinx
sudo apt-get install bison python-pyaudio
</code>

=== sphinxbase ===

On récupère ensuite les sources de **sphinxbase-0.8**
<code>
wget -O sphinxbase-0.8.tar.gz http://sourceforge.net/projects/cmusphinx/files/sphinxbase/0.8/sphinxbase-0.8.tar.gz/download
</code>
On les décompresse
<code>
tar -xvzf sphinxbase-0.8.tar.gz
</code>
On compile

<code>
./configure --prefix=/usr/local
make
sudo make install
</code>

<note important>
Si vous avez l'erreur :
<code>
    import pocketsphinx as ps
  File "sphinxbase.pxd", line 150, in init pocketsphinx (pocketsphinx.c:7935)
ValueError: PyCapsule_GetPointer called with invalid PyCapsule object
</code>
il faut régénérer le fichier  python/sphinxbase.c [[http://sourceforge.net/p/cmusphinx/bugs/284/#b6ea|ref]]
<code>
sudo apt-get install cython
mv python/sphinxbase.c ~
</code>
puis relancer la compilation a partir de ./configure
</note>

<note tip>Par défaut au moment de la configuration de sphinxbase, si les librairies de compilation de pulseaudio sont installées elles seront utilisées.
Si comme moi vous devez utiliser Alsa, il faut supprimer la librairie pulseaudio :
<code>
sudo apt-get remove libpulse-dev

</code>
</note>

=== pocketsphinx ===
<code>
wget -O pocketsphinx-0.8.tar.gz http://sourceforge.net/projects/cmusphinx/files/pocketsphinx/0.8/pocketsphinx-0.8.tar.gz/download
tar -xvzf pocketsphinx-0.8.tar.gz
cd pocketsphinx-0.8
./configure --prefix=/usr/local
make
sudo make install
</code>

=== Modèles français ===

Téléchargement:
<code>
wget -O lium_french_f0.tar.gz http://sourceforge.net/projects/cmusphinx/files/Acoustic%20and%20Language%20Models/Archive/French%20F0%20Broadcast%20News%20Acoustic%20Model/lium_french_f0.tar.gz/download
tar -xvzf lium_french_f0.tar.gz
cd lium_french_f0/
sudo mkdir -p `pkg-config --variable=modeldir pocketsphinx`/hmm/fr_FR/french_f0
sudo mv * `pkg-config --variable=modeldir pocketsphinx`/hmm/fr_FR/french_f0

wget -O french3g62K.lm.dmp http://sourceforge.net/projects/cmusphinx/files/Acoustic%20and%20Language%20Models/French%20Language%20Model/french3g62K.lm.dmp/download
sudo mkdir -p `pkg-config --variable=modeldir pocketsphinx`/lm/fr_FR/
sudo mv french3g62K.lm.dmp `pkg-config --variable=modeldir pocketsphinx`/lm/fr_FR/

wget -O frenchWords62K.dic http://sourceforge.net/projects/cmusphinx/files/Acoustic%20and%20Language%20Models/French%20Language%20Model/frenchWords62K.dic/download
sudo mv frenchWords62K.dic `pkg-config --variable=modeldir pocketsphinx`/lm/fr_FR/

wget -O lium_french_f2.tar.gz http://sourceforge.net/projects/cmusphinx/files/Acoustic%20and%20Language%20Models/Archive/French%20F2%20Telephone%20Acoustic%20Model/lium_french_f2.tar.gz/download

</code>

===== Bon alors, est ce que ça marche ? =====
==== pocketsphinx_continuous ====
<code>
pocketsphinx_continuous -dict /usr/share/pocketsphinx/model/FR/frenchWords62K.dic -hmm /usr/share/pocketsphinx/model/FR/ -lm /usr/share/pocketsphinx/model/FR/french3g62K.lm.dmp
</code>

==== scripts python ====
=== lister tous les périphériques audio ===

[[http://people.csail.mit.edu/hubert/git/?p=pyaudio.git;a=blob;f=test/system_info.py;h=3c81432d7ffa3feaae06fa9804f41ffa03d4865d;hb=HEAD#l49|ref]]
<code language='python'>
#!/usr/bin/python
"""
PyAudio Example:

Query and print PortAudio HostAPIs, Devices, and their
support rates.
"""

import pyaudio

standard_sample_rates = [8000.0, 9600.0, 11025.0, 12000.0,
                         16000.0, 22050.0, 24000.0, 32000.0,
                         44100.0, 48000.0, 88200.0, 96000.0,
                         192000.0]

p = pyaudio.PyAudio()
max_apis = p.get_host_api_count()
max_devs = p.get_device_count()

print("\nPortAudio System Info:\n======================")
print("Version: %d" % pyaudio.get_portaudio_version())
print("Version Text: %s" % pyaudio.get_portaudio_version_text())
print("Number of Host APIs: %d" % max_apis)
print("Number of Devices  : %d" % max_devs)

print("\nHost APIs:\n==========")

for i in range(max_apis):
    apiinfo = p.get_host_api_info_by_index(i)
    for k in list(apiinfo.items()):
        print("%s: %s" % k)
    print("--------------------------")

print("\nDevices:\n========")

for i in range(max_devs):
    devinfo = p.get_device_info_by_index(i)

# print out device parameters
    for k in list(devinfo.items()):
        name, value = k

# if host API, then get friendly name

if name == 'hostApi':
            value = str(value) + \
                    " (%s)" % p.get_host_api_info_by_index(k[1])['name']
        print("\t%s: %s" % (name, value))

# print out supported format rates

input_supported_rates = []
    output_supported_rates = []
    full_duplex_rates = []

for f in standard_sample_rates:

if devinfo['maxInputChannels'] > 0:
            try:
                if p.is_format_supported(
                    f,
                    input_device = devinfo['index'],
                    input_channels = devinfo['maxInputChannels'],
                    input_format = pyaudio.paInt16):
                    input_supported_rates.append(f)
            except ValueError:
                pass

if devinfo['maxOutputChannels'] > 0:
            try:
                if p.is_format_supported(
                    f,
                    output_device = devinfo['index'],
                    output_channels = devinfo['maxOutputChannels'],
                    output_format = pyaudio.paInt16):
                    output_supported_rates.append(f)
            except ValueError:
                pass

if (devinfo['maxInputChannels'] > 0) and \
           (devinfo['maxOutputChannels'] > 0):
            try:
                if p.is_format_supported(
                    f,
                    input_device = devinfo['index'],
                    input_channels = devinfo['maxInputChannels'],
                    input_format = pyaudio.paInt16,
                    output_device = devinfo['index'],
                    output_channels = devinfo['maxOutputChannels'],
                    output_format = pyaudio.paInt16):
                    full_duplex_rates.append(f)
            except ValueError:
                pass

if len(input_supported_rates):
        print("\tInput rates: %s" % input_supported_rates)
    if len(output_supported_rates):
        print("\tOutput rates: %s" % output_supported_rates)
    if len(full_duplex_rates):
        print("\tFull duplex: %s" % full_duplex_rates)

print("\t--------------------------------")

print("\nDefault Devices:\n================")
try:
    def_index = p.get_default_input_device_info()['index']
    print("Default Input Device : %s" % def_index)
    devinfo = p.get_device_info_by_index(def_index)
    for k in list(devinfo.items()):
        name, value = k
        if name == 'hostApi':
            value = str(value) + \
                    " (%s)" % p.get_host_api_info_by_index(k[1])['name']
        print("\t%s: %s" % (name, value))
    print("\t--------------------------------")
except IOError as e:
    print("No Input devices: %s" % e[0])

try:
    def_index = p.get_default_output_device_info()['index']
    print("Default Output Device: %s" % def_index)
    devinfo = p.get_device_info_by_index(def_index)
    for k in list(devinfo.items()):
        name, value = k
        if name == 'hostApi':
            value = str(value) + \
                    " (%s)" % p.get_host_api_info_by_index(k[1])['name']
        print("\t%s: %s" % (name, value))
    print("\t--------------------------------")
except IOError as e:
    print("No Output devices: %s" % e[0])

p.terminate()

</code>
=== essayer de faire une reconnaissance vocale ===

[[http://pythonism.wordpress.com/2013/06/06/pocketsphinx-voice-recognition-with-python/|ref]]

<code language='python'>
#!/usr/bin/python

import sys,os
import pyaudio
import wave

hmdir = "/usr/share/pocketsphinx/model/FR/"
lmd = "/usr/share/pocketsphinx/model/FR/french3g62K.lm.dmp"
dictd = "/usr/share/pocketsphinx/model/FR/frenchWords62K.dic"

def decodeSpeech(hmmd,lmdir,dictp,wavfile):

import pocketsphinx as ps
    import sphinxbase

speechRec = ps.Decoder(hmm = hmmd, lm = lmdir, dict = dictp)
    wavFile = file(wavfile,'rb')
    wavFile.seek(44)
    speechRec.decode_raw(wavFile)
    result = speechRec.get_hyp()

return result[0]

#CHUNK = 1024
CHUNK = 512
#FORMAT = pyaudio.paInt16
FORMAT = pyaudio.paALSA
CHANNELS = 1
RATE = 16000
#RATE = 44100
RECORD_SECONDS = 10

for x in range(10):
    fn = "o"+str(x)+".wav"
    p = pyaudio.PyAudio()
    stream = p.open(format=FORMAT, channels=CHANNELS, rate=RATE, input=True, frames_per_buffer=CHUNK)
    print("* recording")
    frames = []
    print str(RATE / CHUNK * RECORD_SECONDS) + " size\n"
    for i in range(0, int(RATE / CHUNK * RECORD_SECONDS)):
        data = stream.read(CHUNK)
        frames.append(data)
    print("* done recording")
    stream.stop_stream()
    stream.close()
    wf = wave.open(fn, 'wb')
    wf.setnchannels(CHANNELS)
    wf.setsampwidth(p.get_sample_size(FORMAT))
    p.terminate()
    wf.setframerate(RATE)
    wf.writeframes(b''.join(frames))
    wf.close()
    wavfile = fn
    recognised = decodeSpeech(hmdir,lmd,dictd,wavfile)
    print recognised
    cm = 'espeak "'+recognised+'"'
    os.system(cm)
</code>
===== Références =====

* Site officiel : http://cmusphinx.sourceforge.net/wiki/download/
  * Python audio : http://people.csail.mit.edu/hubert/pyaudio/docs/
  * Exemple en python: http://pythonism.wordpress.com/2013/06/06/pocketsphinx-voice-recognition-with-python/
  * http://stackoverflow.com/questions/8567366/geting-ioerror-errno-input-overflowed-9981-when-setting-pyaudio-stream-input
  * installer sur raspberry pi :http://stackoverflow.com/questions/17778532/raspberrypi-pocketsphinx-ps3eye-error-failed-to-open-audio-device

Merci de recopier le code ci-contre pour prouver que vous êtes humain : J W M B E Merci de laisser ce champ vide :

Résumé

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