PyAudioWPatch 0.2.12.1

PortAudio fork with WASAPI loopback support

PyAudioWPatch

PyAudioW(indows|ASAPI)Patch

This fork will allow you to use the WASAPI device as loopback using PyAudio.

For whom?

If you want to record sound from your speakers in python, then this is the fork for you.

PyAudioW(indows|ASAPI)Patch come only with WMME, DirectX and WASAPI support if you need more -> create an issue

How

The Windows Audio Session API (WASAPI) allows you to use output devices (that support this API) in loopback mode. At the time of release, it was impossible to achieve this using the original version of PyAudio.

Note: Now WASAPI loopback devices are duplicated at the end of the list as virtual devices. That is, to record from speakers, you need to use not just a WASAPI device, but its loopback analogue. All loopback devices are input devices.

How to use

Read -> Install -> Enjoy!

Installation

pip install PyAudioWPatch

Wheels are currently only available for Windows x64 Python 3.{6,7,8,9,10,11}. I will try to add x32 before 09/11/22

In code

With new features:

import pyaudiowpatch as pyaudio

with pyaudio.PyAudio() as p:
    # Open PyA manager via context manager
    with p.open(...) as stream:
        # Open audio stream via context manager
        # Do some staf
        ...

Or in original PyAudio way:

import pyaudiowpatch as pyaudio

p = pyaudio.PyAudio()
stream = p.open(...)
# Do some staf

stream.stop_stream()
stream.close()

# close PyAudio
p.terminate()

Difference with PyAudio

• The behavior of all standard methods is unchanged
• Added several life-improving methods
• Fixed problem with name encoding

More detailed

• new methods:
  • get_host_api_info_generator - Iterate over all Host APIs
  • get_device_info_generator - Iterate over all devices
  • get_device_info_generator_by_host_api - Iterate over all devices, by specific Host API(index/type)
  • get_loopback_device_info_generator - Iterate over all devices(with loopback mode)
  • print_detailed_system_info - Print some info about Host Api and devices

• new features:
  • Context manager support, for PyAudio(manager) and Stream classes
  • Run python -m pyaudiowpatch to get list of devices(like print_detailed_system_info call)

Examples:

• Play sine, using 'new context manager'
• Record from audio from default speakers
• Cross-platform concept (Not example)

Sources

The following were taken as a basis:

• PortAudio v19 [8b6d16f26ad660e68a97743842ac29b939f3c0c1]
• PyAudio v0.2.12

How to build manually

• Build PortAudio (using the instructions in the README)
• Install python
• run in the PyAudioWPatch directory:

  python setup.py install
  

• ???
• Profit.

---

Origin README

PyAudio

PyAudio provides Python bindings for PortAudio v19, the cross-platform audio I/O library. With PyAudio, you can easily use Python to play and record audio on a variety of platforms, such as GNU/Linux, Microsoft Windows, and Apple macOS.

PyAudio is distributed under the MIT License.

• Homepage
• API Documentation
• PyPi

Installation

See the INSTALLATION file in the source distribution for details. In summary, install PyAudio using pip on most platforms.

Windows

python -m pip install pyaudio

This installs the precompiled PyAudio library with PortAudio v19 19.7.0 included. The library is compiled with support for Windows MME API, DirectSound, WASAPI, and WDM-KS. It does not include support for ASIO. If you require support for APIs not included, you will need to compile PortAudio and PyAudio.

macOS

Use Homebrew to install the prerequisite portaudio library, then install PyAudio using pip:

brew install portaudio
pip install pyaudio

GNU/Linux

Use the package manager to install PyAudio. For example, on Debian-based systems:

sudo apt install python3-pyaudio

Alternatively, if the latest version of PyAudio is not available, install it using pip. Be sure to first install development libraries for portaudio19 and python3.

Building from source

See the INSTALLATION file.

Documentation & Usage Examples

• Read the API Documentation, or generate it from the source using sphinx.

• Usage examples are in the examples directory of the source distribution, or see the project homepage.

License

PyAudio is distributed under the MIT License. See LICENSE.txt.