如何将NIST SPHERE格式音频转为RIFF格式适配wave库？

Absolutely, you can convert your NIST SPHERE format file to a standard RIFF WAV so you can use Python's built-in wave library with it. Here’s how to fix this issue:

Why the Error Happens #

The wave module only supports standard RIFF-format WAV files. Your 1a.wav is actually in NIST SPHERE format—even though it has a .wav extension, it uses a different file header (not starting with the RIFF identifier), hence the Error: file does not start with RIFF id.

Method 1: Convert with Python (No External Tools) #

Use scipy.io.wavfile (part of the SciPy library) which supports reading NIST SPHERE files, then save the audio as a RIFF WAV:

1. First, install SciPy if you haven’t:

   pip install scipy
   

2. Run this code to convert your file:

   from scipy.io import wavfile
   
   # Read the NIST SPHERE file
   sample_rate, audio_data = wavfile.read('/path/to/wavfile/1a.wav')
   
   # Save as a standard RIFF WAV
   wavfile.write('/path/to/converted/1a_riff.wav', sample_rate, audio_data)
   

Once converted, you can open the new 1a_riff.wav file with wave.open() without any issues.

Method 2: Convert with Command-Line Tool (Sox) #

If you prefer a quick command-line solution, use Sox (Sound eXchange), a popular audio processing tool:

1. Install Sox (on Debian/Ubuntu: sudo apt install sox; on macOS: brew install sox; on Windows, download from official sources).

2. Run this command to convert the file:

   sox /path/to/wavfile/1a.wav /path/to/converted/1a_riff.wav
   

This will automatically convert the NIST SPHERE file to a standard RIFF WAV, ready for use with Python’s wave library.

内容的提问来源于stack exchange，提问作者UrmLmn