I am trying to record from my microphone while i press down a button, problem
is that the library I am using is not able to detect on hold event. It only
detect on press, which happens once, which means that the microphone only
records one sample..
import pyaudio
import wave
from pynput import keyboard
CHUNK = 8192
FORMAT = pyaudio.paInt16
CHANNELS = 2
RATE = 44100
RECORD_SECONDS = 5
WAVE_OUTPUT_FILENAME = "output.wav"
p = pyaudio.PyAudio()
stream = p.open(format=FORMAT,
channels=CHANNELS,
rate=RATE,
input=True,
frames_per_buffer=CHUNK)
frames = []
def on_press(key):
if key == keyboard.Key.cmd_l:
print('- Started recording -'.format(key))
try:
data = stream.read(CHUNK)
frames.append(data)
except IOError:
print 'warning: dropped frame' # can replace with 'pass' if no
message desired
else:
print('incorrect character {0}, press cmd_l'.format(key))
def on_release(key):
print('{0} released'.format(
key))
if key == keyboard.Key.cmd_l:
print('{0} stop'.format(key))
keyboard.Listener.stop
return False
print("* recording")
with keyboard.Listener(on_press=on_press, on_release=on_release) as listener:
listener.join()
print("* done recording")
stream.stop_stream()
stream.close()
p.terminate()
wf = wave.open(WAVE_OUTPUT_FILENAME, 'wb')
wf.setnchannels(CHANNELS)
wf.setsampwidth(p.get_sample_size(FORMAT))
wf.setframerate(RATE)
wf.writeframes(b''.join(frames))
wf.close()
I am using pynput <https://pypi.python.org/pypi/pynput> for keyboard events and
pyaudio for recording. I am pretty sure that this should be the error, as the
example script for recording, picks up samples in a for loop, which works.
So does any of you know any libraries that monitors state of the keyboard, or
any ideas on how to get this working?.. I tried with a while look inside the
on_press callback but that resulted in me getting stuck that callback.
How can i fix this?
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