Ich führe das folgende Python-Skript aus mit ./test.py:
#!/usr/bin/python3
import snowboydecoder
import sys
import signal
import speech_recognition as sr
import cec
import os
"""
This demo file shows you how to use the new_message_callback to interact with
the recorded audio after a keyword is spoken. It uses the speech recognition
library in order to convert the recorded audio into text.
Information on installing the speech recognition library can be found at:
https://pypi.python.org/pypi/SpeechRecognition/
"""
interrupted = False
def audioRecorderCallback(fname):
print("converting audio to text")
r = sr.Recognizer()
f = open("key.json")
key = f.read()
f.close()
with sr.AudioFile(fname) as source:
audio = r.record(source) # read the entire audio file
# recognize speech using Google Speech Recognition
try:
print(r.recognize_google_cloud(audio, key, "hu-HU"))
except sr.UnknownValueError:
print("Google Speech Recognition could not understand audio")
except sr.RequestError as e:
print("Could not request results from Google Speech Recognition service; {0}".format(e))
os.remove(fname)
def detectedCallback():
print('recording audio...', end='', flush=True)
def signal_handler(signal, frame):
global interrupted
interrupted = True
def interrupt_callback():
global interrupted
return interrupted
if len(sys.argv) == 1:
print("Unspecified model, defaulting to snowboy.umdl")
print("Usage: test.py your.model")
model = "/mnt/samba/shared/snowboy/snowboy.umdl"
else:
model = sys.argv[1]
cec.init()
cec_devices = cec.list_devices()
# capture SIGINT signal, e.g., Ctrl+C
signal.signal(signal.SIGINT, signal_handler)
detector = snowboydecoder.HotwordDetector(model, sensitivity=0.7, audio_gain=1)
print('Listening... Press Ctrl+C to exit')
# main loop
detector.start(detected_callback=detectedCallback,
audio_recorder_callback=audioRecorderCallback,
silent_count_threshold=4,
recording_timeout=10,
interrupt_check=interrupt_callback,
sleep_time=0.01)
detector.terminate()
Die Ausgabe entspricht weitgehend meinen Erwartungen. Elemente wie diese [[[sind mein Kommentar]]] sehen folgendermaßen aus:
Unspecified model, defaulting to snowboy.umdl
Usage: test.py your.model
Listening... Press Ctrl+C to exit
Expression 'alsa_snd_pcm_hw_params_set_period_size_near( pcm, hwParams, &alsaPeriodFrames, &dir )' failed in 'src/hostapi/alsa/pa_linux_alsa.c', line: 924
Expression 'alsa_snd_pcm_hw_params_set_period_size_near( pcm, hwParams, &alsaPeriodFrames, &dir )' failed in 'src/hostapi/alsa/pa_linux_alsa.c', line: 924
Expression 'alsa_snd_pcm_hw_params_set_period_size_near( pcm, hwParams, &alsaPeriodFrames, &dir )' failed in 'src/hostapi/alsa/pa_linux_alsa.c', line: 924
ALSA lib confmisc.c:1281:(snd_func_refer) Unable to find definition 'cards.bcm2835_hdmi.pcm.front.0:CARD=0'
ALSA lib conf.c:4568:(_snd_config_evaluate) function snd_func_refer returned error: No such file or directory
ALSA lib conf.c:5047:(snd_config_expand) Evaluate error: No such file or directory
ALSA lib pcm.c:2565:(snd_pcm_open_noupdate) Unknown PCM front
ALSA lib pcm.c:2565:(snd_pcm_open_noupdate) Unknown PCM cards.pcm.rear
ALSA lib pcm.c:2565:(snd_pcm_open_noupdate) Unknown PCM cards.pcm.center_lfe
ALSA lib pcm.c:2565:(snd_pcm_open_noupdate) Unknown PCM cards.pcm.side
ALSA lib confmisc.c:1281:(snd_func_refer) Unable to find definition 'cards.bcm2835_hdmi.pcm.surround51.0:CARD=0'
ALSA lib conf.c:4568:(_snd_config_evaluate) function snd_func_refer returned error: No such file or directory
ALSA lib conf.c:5047:(snd_config_expand) Evaluate error: No such file or directory
ALSA lib pcm.c:2565:(snd_pcm_open_noupdate) Unknown PCM surround21
ALSA lib confmisc.c:1281:(snd_func_refer) Unable to find definition 'cards.bcm2835_hdmi.pcm.surround51.0:CARD=0'
ALSA lib conf.c:4568:(_snd_config_evaluate) function snd_func_refer returned error: No such file or directory
ALSA lib conf.c:5047:(snd_config_expand) Evaluate error: No such file or directory
ALSA lib pcm.c:2565:(snd_pcm_open_noupdate) Unknown PCM surround21
ALSA lib confmisc.c:1281:(snd_func_refer) Unable to find definition 'cards.bcm2835_hdmi.pcm.surround40.0:CARD=0'
ALSA lib conf.c:4568:(_snd_config_evaluate) function snd_func_refer returned error: No such file or directory
ALSA lib conf.c:5047:(snd_config_expand) Evaluate error: No such file or directory
ALSA lib pcm.c:2565:(snd_pcm_open_noupdate) Unknown PCM surround40
ALSA lib confmisc.c:1281:(snd_func_refer) Unable to find definition 'cards.bcm2835_hdmi.pcm.surround51.0:CARD=0'
ALSA lib conf.c:4568:(_snd_config_evaluate) function snd_func_refer returned error: No such file or directory
ALSA lib conf.c:5047:(snd_config_expand) Evaluate error: No such file or directory
ALSA lib pcm.c:2565:(snd_pcm_open_noupdate) Unknown PCM surround41
ALSA lib confmisc.c:1281:(snd_func_refer) Unable to find definition 'cards.bcm2835_hdmi.pcm.surround51.0:CARD=0'
ALSA lib conf.c:4568:(_snd_config_evaluate) function snd_func_refer returned error: No such file or directory
ALSA lib conf.c:5047:(snd_config_expand) Evaluate error: No such file or directory
ALSA lib pcm.c:2565:(snd_pcm_open_noupdate) Unknown PCM surround50
ALSA lib confmisc.c:1281:(snd_func_refer) Unable to find definition 'cards.bcm2835_hdmi.pcm.surround51.0:CARD=0'
ALSA lib conf.c:4568:(_snd_config_evaluate) function snd_func_refer returned error: No such file or directory
ALSA lib conf.c:5047:(snd_config_expand) Evaluate error: No such file or directory
ALSA lib pcm.c:2565:(snd_pcm_open_noupdate) Unknown PCM surround51
ALSA lib confmisc.c:1281:(snd_func_refer) Unable to find definition 'cards.bcm2835_hdmi.pcm.surround71.0:CARD=0'
ALSA lib conf.c:4568:(_snd_config_evaluate) function snd_func_refer returned error: No such file or directory
ALSA lib conf.c:5047:(snd_config_expand) Evaluate error: No such file or directory
ALSA lib pcm.c:2565:(snd_pcm_open_noupdate) Unknown PCM surround71
ALSA lib confmisc.c:1281:(snd_func_refer) Unable to find definition 'cards.bcm2835_hdmi.pcm.iec958.0:CARD=0,AES0=4,AES1=130,AES2=0,AES3=2'
ALSA lib conf.c:4568:(_snd_config_evaluate) function snd_func_refer returned error: No such file or directory
ALSA lib conf.c:5047:(snd_config_expand) Evaluate error: No such file or directory
ALSA lib pcm.c:2565:(snd_pcm_open_noupdate) Unknown PCM iec958
ALSA lib confmisc.c:1281:(snd_func_refer) Unable to find definition 'cards.bcm2835_hdmi.pcm.iec958.0:CARD=0,AES0=4,AES1=130,AES2=0,AES3=2'
ALSA lib conf.c:4568:(_snd_config_evaluate) function snd_func_refer returned error: No such file or directory
ALSA lib conf.c:5047:(snd_config_expand) Evaluate error: No such file or directory
ALSA lib pcm.c:2565:(snd_pcm_open_noupdate) Unknown PCM spdif
ALSA lib confmisc.c:1281:(snd_func_refer) Unable to find definition 'cards.bcm2835_hdmi.pcm.iec958.0:CARD=0,AES0=4,AES1=130,AES2=0,AES3=2'
ALSA lib conf.c:4568:(_snd_config_evaluate) function snd_func_refer returned error: No such file or directory
ALSA lib conf.c:5047:(snd_config_expand) Evaluate error: No such file or directory
ALSA lib pcm.c:2565:(snd_pcm_open_noupdate) Unknown PCM spdif
ALSA lib pcm.c:2565:(snd_pcm_open_noupdate) Unknown PCM cards.pcm.hdmi
ALSA lib pcm.c:2565:(snd_pcm_open_noupdate) Unknown PCM cards.pcm.hdmi
ALSA lib pcm.c:2565:(snd_pcm_open_noupdate) Unknown PCM cards.pcm.modem
ALSA lib pcm.c:2565:(snd_pcm_open_noupdate) Unknown PCM cards.pcm.modem
ALSA lib pcm.c:2565:(snd_pcm_open_noupdate) Unknown PCM cards.pcm.phoneline
ALSA lib pcm.c:2565:(snd_pcm_open_noupdate) Unknown PCM cards.pcm.phoneline
Cannot connect to server socket err = No such file or directory
Cannot connect to server request channel
jack server is not running or cannot be started
JackShmReadWritePtr::~JackShmReadWritePtr - Init not done for -1, skipping unlock
JackShmReadWritePtr::~JackShmReadWritePtr - Init not done for -1, skipping unlock
[[[Program waits here for verbal input]]]
INFO:snowboy:Keyword 1 detected at time: 2020-12-02 12:09:45
recording audio...converting audio to text
[[[Likely unrelated googleapi timeout error]]]
Wenn ich das Skript jedoch in ein systemd-Skript umwandle mit /etc/systemd/system/test.service:
[Unit]
Description=Super user test service
After=sound.target network.target
Requires=sound.target
Wants=network.target
StartLimitIntervalSec=0
[Service]
Type=simple
Restart=always
RestartSec=1
User=pi
WorkingDirectory=/home/pi/snowboy
ExecStart=/mnt/samba/shared/snowboy/test.py
[Install]
WantedBy=multi-user.target
Ich erhalte eine unerklärlicherweise andere Ausgabe vonjournalctl -u test.service -f
Dec 02 12:00:59 ARPI systemd[1]: Started Super user test service.
Dec 02 12:01:08 ARPI test.py[25846]: Expression 'alsa_snd_pcm_hw_params_set_period_size_near( pcm, hwParams, &alsaPeriodFrames, &dir )' failed in 'src/hostapi/alsa/pa_linux_alsa.c', line: 924
[[[Identical ALSA lib messages]]]
Dec 02 12:01:08 ARPI test.py[25846]: JackShmReadWritePtr::~JackShmReadWritePtr - Init not done for -1, skipping unlock
[[[Program waits here for verbal input]]]
Dec 02 12:04:47 ARPI test.py[25846]: INFO:snowboy:Keyword 1 detected at time: 2020-12-02 12:04:47
Dec 02 12:04:47 ARPI test.py[25846]: Unspecified model, defaulting to snowboy.umdl
Dec 02 12:04:47 ARPI test.py[25846]: Usage: test.py your.model
Dec 02 12:04:47 ARPI test.py[25846]: Listening... Press Ctrl+C to exit
Dec 02 12:05:49 ARPI test.py[25846]: recording audio...WARNING:googleapiclient.http:Sleeping 1.39 seconds before retry 1 of 1 for request: GET https://www.googleapis.com/discovery/v1/apis/speech/v1/rest, after timed out
Dec 02 12:06:51 ARPI test.py[25846]: converting audio to text
[[[Likely unrelated googleapi timeout error]]]
Dec 02 12:06:51 ARPI systemd[1]: test.service: Main process exited, code=exited, status=1/FAILURE
Dec 02 12:06:51 ARPI systemd[1]: test.service: Failed with result 'exit-code'.
Dec 02 12:06:52 ARPI systemd[1]: test.service: Service RestartSec=1s expired, scheduling restart.
Dec 02 12:06:52 ARPI systemd[1]: test.service: Scheduled restart job, restart counter is at 2.
Dec 02 12:06:52 ARPI systemd[1]: Stopped Super user test service.
Ich habe es versucht, sudo journalctl --syncwährend der Dienst auf eine Eingabe wartete, aber die erwarteten Zeilen (Nicht angegebenes Modell, Zuhören, bla bla …) erschienen nicht im Journal.
Antwort1
Ich habe gefundendieser Artikelüber journald, in dem darauf hingewiesen wurde, dass es möglicherweise Probleme mit dem Puffern gibt.
Es führte mich zudiese Python-spezifische Unix StackExchange-Fragemit einer Lösung.
Das Hinzufügen von Environment="PYTHONUNBUFFERED=1"„under“ [Service]in der systemd-Servicedatei hat das Problem gelöst.