I currently have the following code, which produces a sine wave of varying frequencies using the `pyaudio` module:

```
import pyaudio
import numpy as np

p = pyaudio.PyAudio()

volume = 0.5
fs = 44100
duration = 1

f = 440

samples = (np.sin(2 * np.pi * np.arange(fs * duration) * f / 
fs)).astype(np.float32).tobytes()

stream = p.open(format = pyaudio.paFloat32,
                channels = 1,
                rate = fs,
                output = True)

stream.write(samples)

```

However, instead of playing the sound, is there any way to make it so that the sound is written into an audio file?