Frequently Asked Question (FAQs)

This page contains frequently asked questions for sherpa-onnx.

在线、离线、流式、非流式的区别

此项目中，在线 等同于流式，离线 等同于非流式。

在线 即流式，是边说边识别；响应速度快、延迟小。

离线 即非流式，是把所有待识别的数据，一次性送给模型；特点是需要等待所有的数据都到齐, 然后才能开始识别。

不管是 离线 还是 在线, 我们这个项目，都不需要访问网络，都可以在本地处理；即使断网，也能正常工作。

Cannot open shared library libasound_module_conf_pulse.so

The detailed errors are given below:

Cannot open shared library libasound_module_conf_pulse.so
(/usr/lib64/alsa-lib/libasound_module_conf_pulse.so: cannot open shared object file: No such file or directory)
ALSA lib pcm.c:2722:(snd_pcm_open_noupdate) Unknown PCM

If you use Linux and get the above error when trying to use the microphone, please do the following:

Locate where is the file libasound_module_conf_pulse.so on your system

find / -name libasound_module_conf_pulse.so 2>/dev/null

If the above search command prints:

/usr/lib/x86_64-linux-gnu/alsa-lib/libasound_module_conf_pulse.so
/usr/lib/i386-linux-gnu/alsa-lib/libasound_module_conf_pulse.so

Please run:

sudo mkdir -p /usr/lib64/alsa-lib
sudo ln -s /usr/lib/x86_64-linux-gnu/alsa-lib/libasound_module_conf_pulse.so /usr/lib64/alsa-lib

Now your issue should be fixed.

TTS 中文模型没有声音

Please see How to enable UTF-8 on Windows. You need to use UTF-8 encoding for your system.

./gitcompile: line 89: libtoolize: command not found

If you are using Linux and get the following error:

./gitcompile: line 89: libtoolize: command not found

Please run:

sudo apt-get install libtool

OSError: PortAudio library not found

If you have the following error on Linux (Ubuntu),

Traceback (most recent call last):
  File "/mnt/sdb/shared/sherpa-onnx/./python-api-examples/vad-microphone.py", line 8, in <module>
    import sounddevice as sd
  File "/mnt/sdb/shared/py311/lib/python3.11/site-packages/sounddevice.py", line 71, in <module>
    raise OSError('PortAudio library not found')
OSError: PortAudio library not found

Then please run:

sudo apt-get install libportaudio2

and then re-try.