pa.py

#!/usr/bin/env python

# File: pa.py
# This program prints out your system's audio input configuration as seen 
# by pyaudio (PortAudio).

# Copyright 2013-2014 Martin Ewing

import pyaudio as pa

print("""First, you will receive a number of ALSA warnings about unknown PCM cards, etc.
This is an annoying but harmless feature of PortAudio.""")
print()
print("-------------------------")
x = pa.PyAudio()
print("-------------------------")
print()
print("API'S FOUND (TYPICALLY ALSA and OSS):")
for i in range(x.get_host_api_count()):
    print("API %d:" % i)
    print(x.get_host_api_info_by_index(i))
print()
print("DEFAULT HOST API INFO:", x.get_default_host_api_info()['name'])
print()
print("DEVICE COUNT =", x.get_device_count())
print()
print("ALL DEVICE INFO: (For iq.py, choose one of these as 'index'.)")
print()
for i in range(x.get_device_count()):
    di = x.get_device_info_by_index(i)
    print("DEVICE: %d; NAME: '%s'" % (i, di['name']))
    for j in ['defaultSampleRate', 'maxInputChannels', 'maxOutputChannels']:
        print(j, ":", di[j])
    print()
print("DEFAULT INPUT DEVICE FULL INFO:")
ddi = x.get_default_input_device_info()
print(ddi)
print()
print("DEFAULT INDEX =", ddi['index'])