Inconsistency with audio segment duration on silence or Sine

[nikolas-loris-ai]

Hello, I'm facing the following issue.

Any help is appreciated

Steps to reproduce

In [48]: beep_segment = Sine(1000, sample_rate=8000).to_audio_segment(duration=4095)

In [49]: beep_segment.duration_seconds
Out[49]: 4.094875


In [52]: silence_segment = AudioSegment.silent(duration=4095, frame_rate=8000)

In [53]: silence_segment.duration_seconds
Out[53]: 4.094875

I'm trying to later replace parts of audio file with this segments and getting the error

ValueError('attempt to assign array of size 186399 to extended slice of size 186400')

Expected behavior

I would expect duration_seconds to be 4095

Actual behavior

Some milliseconds are missing

Your System configuration

• Python version: 3.11.8
• Pydub version: 0.25.1
• ffmpeg or avlib?: ffmpeg
• ffmpeg/avlib version: 4.3.6-0+deb11u1

Is there an audio file you can include to help us reproduce?

not needed