"oserror: No Default Input Device Available" On Google Colab

I installed pyaudio using 'pip3 install pyaudio' on Google Colab based on this answer from angelokh's. Then, I got this error, OSError: No Default Input Device Available on Google

Solution 1:

You can't use the mic from Google Colab directly as you do with your own machine. You have to use JavaScript to let the browser enable the mic. This can be done using the following code found here:

# all importsfrom io import BytesIO
from base64 import b64decode
from google.colab import output
from IPython.display import Javascript

RECORD = """
const sleep  = time => new Promise(resolve => setTimeout(resolve, time))
const b2text = blob => new Promise(resolve => {
  const reader = new FileReader()
  reader.onloadend = e => resolve(e.srcElement.result)
  reader.readAsDataURL(blob)
})
var record = time => new Promise(async resolve => {
  stream = await navigator.mediaDevices.getUserMedia({ audio: true })
  recorder = new MediaRecorder(stream)
  chunks = []
  recorder.ondataavailable = e => chunks.push(e.data)
  recorder.start()
  await sleep(time)
  recorder.onstop = async ()=>{
    blob = new Blob(chunks)
    text = await b2text(blob)
    resolve(text)
  }
  recorder.stop()
})
"""defrecord(sec=3):
  print("Speak Now...")
  display(Javascript(RECORD))
  sec += 1
  s = output.eval_js('record(%d)' % (sec*1000))
  print("Done Recording !")
  b = b64decode(s.split(',')[1])
  return b #byte stream

Now you can use the record() function to record the audio. This function returns the audio as byte-stream. You can try it yourself on colab following this link: