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Anaconda's portaudio fails to detect default input device ...
https://github.com/ContinuumIO/anaconda-issues/issues/4139
import pyaudio pa = pyaudio.PyAudio () pa.get_default_input_device_info () Looking through PyAudio's source code, this command seems to almost directly call PortAudio. So I suspect this is an issue with Anaconda's PortAudio configuration, rather than with PyAudio.
ubuntu - Portaudio select input device for capturing ...
https://stackoverflow.com/questions/50248813/portaudio-select-input-device-for-capturing
I face some problems with set up input device for portaudio. I have 2 cards 0 and 1, and I want to configure: card 0 for capturing, card 1 for playing. So, I edit asound.conf like this: pcm!.default { type asym playback.pcm "plughw:1" capture.pcm "plughw:0" } I realize portaudio can not record audio file, it's always 0 byte in record file.
PortAudio: Opening a Stream Using Defaults
http://files.portaudio.com/docs/v19-doxydocs/open_default_stream.html
PortAudio. The next step is to open a stream, which is similar to opening a file. You can specify whether you want audio input and/or output, how many channels, the data format, sample rate, etc. Opening a ''default'' stream means opening the default input and output devices, which saves you the trouble of getting a list of devices and choosing one from the list.
PortAudio: PaHostApiInfo Struct Reference
http://www.portaudio.com/docs/v19-doxydocs/structPaHostApiInfo.html
PaDeviceIndex PaHostApiInfo::defaultInputDevice. The default input device for this host API. The value will be a device index ranging from 0 to ( Pa_GetDeviceCount () -1), or paNoDevice if no default input device is available. Definition at line 316 of file portaudio.h. PaDeviceIndex PaHostApiInfo::defaultOutputDevice.
PortAudio: Enumerating and Querying PortAudio Devices
http://www.portaudio.com/docs/v19-doxydocs/querying_devices.html
Querying Devices. It is often fine to use the default device as we did previously in this tutorial, but there are times when you'll want to explicitly choose the device from a list of available devices on the system. To see a working example of this, check out pa_devs.c in the tests/ directory of the PortAudio source code. To do so, you'll need to first initialize PortAudio and Query for the …
PortAudio Panic and No Devices Found - Eddy Luten
https://eddyluten.com/portaudio-panic-and-no-devices-found
Leaving this here for the poor souls on Linux systems that run into errors accessing the default input or output devices using PortAudio and get nothing back. Maybe you’re using rust-portaudio and your application panics after accessing default_output_device or default_intput_device even though you clearly have default audio devices set:
PortAudio: Blocking Read/Write Functions
http://portaudio.com/docs/v19-doxydocs/blocking_read_write.html
The example below, excepted from patest_read_write_wire.c, shows how to open the default device, and pass data from its input to its output for a set period of time. Note that we use the default high latency values to help avoid underruns since we are usually reading and writing audio data from a relatively low priority thread, and there is ...
Audio::PortAudio - metacpan.org
https://metacpan.org/pod/Audio::PortAudio
my $device = $api->default_input_device; Get the default device for this API. default_output_device my $device = $api->default_output_device; Get the default device for this API. Audio::PortAudio::Device name my $name = $device->name; Returns the human readable name of this device. host_api my $api = $device->host_api; The API that provides this device. …
PortAudio: portaudio.h File Reference
http://files.portaudio.com/docs/v19-doxydocs/portaudio_8h.html
The default output device index for the default host API, or paNoDevice if no default output device is available or an error was encountered. Note On the PC, the user can specify a default device by setting an environment variable. For example, to use device #1. set PA_RECOMMENDED_OUTPUT_DEVICE=1
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