style(imports): simplify soundfile imports

benchmarks/audio/run_microphone_benchmark.py

@@ -20,7 +20,7 @@ from pathlib import Path
 
 import matplotlib.pyplot as plt
 import numpy as np
-import soundfile as sf
+from soundfile import read
 
 from lerobot.microphones.configs import MicrophoneConfig
 from lerobot.microphones.portaudio import PortAudioMicrophone, PortAudioMicrophoneConfig
@@ -97,8 +97,8 @@ def main(
             recorded_audio_chunks = all_audio_chunks[i][microphone_key]
 
             # Load recorded file
-            recorded_data, _ = sf.read(recording_dir / f"{microphone_key}_recording_{i}.wav")
-            if len(recorded_data.shape) == 1:
+            recorded_data, _ = read(recording_dir / f"{microphone_key}_recording_{i}.wav")
+            if recorded_data.ndim == 1:
                 recorded_data = np.expand_dims(recorded_data, axis=1)
 
             record_length[i, j] = recorded_data.shape[0]

src/lerobot/microphones/portaudio/microphone_portaudio.py

@@ -26,7 +26,7 @@ from typing import Any
 
 import numpy as np
 import sounddevice as sd
-import soundfile as sf
+from soundfile import SoundFile
 
 from lerobot.utils.errors import (
     DeviceAlreadyConnectedError,
@@ -196,7 +196,7 @@ class PortAudioMicrophone(Microphone):
         Thread/Process-safe loop to write audio data into a file.
         """
         # Can only be run on a single process/thread for file writing safety
-        with sf.SoundFile(
+        with SoundFile(
             output_file,
             mode="w",
             samplerate=sample_rate,