当我尝试录制某些内容时出现 Pyaudio 错误

Question

Am working on a distant server (ubuntu) via Ssh, and i want to record using pyaudio module, i have it

already installed.

My code:

import pyaudio
import wave

CHUNK = 1024
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)

print("* recording")

frames = []

for i in range(0, int(RATE / CHUNK * RECORD_SECONDS)):
    data = stream.read(CHUNK)
    frames.append(data)

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()

When i run i get the following errors:

Traceback (most recent call last):
  File "record.py", line 13, in <module>
    stream = p.open(format=FORMAT,
  File "/usr/local/lib/python3.8/dist-packages/PyAudio-0.2.11-py3.8-linux-x86_64.egg/pyaudio.py", line 750, in open
    stream = Stream(self, *args, **kwargs)
  File "/usr/local/lib/python3.8/dist-packages/PyAudio-0.2.11-py3.8-linux-x86_64.egg/pyaudio.py", line 441, in __init__
    self._stream = pa.open(**arguments)
OSError: [Errno -9996] Invalid input device (no default output device)

I tried to change channels number to 1 but didn't work

Answer 1

Am working on a distant server (ubuntu) via Ssh, and i want to record using pyaudio module, i have it

already installed.

My code:

import pyaudio
import wave

CHUNK = 1024
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)

print("* recording")

frames = []

for i in range(0, int(RATE / CHUNK * RECORD_SECONDS)):
    data = stream.read(CHUNK)
    frames.append(data)

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()

When i run i get the following errors:

Traceback (most recent call last):
  File "record.py", line 13, in <module>
    stream = p.open(format=FORMAT,
  File "/usr/local/lib/python3.8/dist-packages/PyAudio-0.2.11-py3.8-linux-x86_64.egg/pyaudio.py", line 750, in open
    stream = Stream(self, *args, **kwargs)
  File "/usr/local/lib/python3.8/dist-packages/PyAudio-0.2.11-py3.8-linux-x86_64.egg/pyaudio.py", line 441, in __init__
    self._stream = pa.open(**arguments)
OSError: [Errno -9996] Invalid input device (no default output device)

I tried to change channels number to 1 but didn't work