From 6d7be63f59bbc610c891edb8ac4593b6d75c3fa7 Mon Sep 17 00:00:00 2001
From: CarolinePascal <caroline8.pascal@gmail.com>
Date: Wed, 16 Apr 2025 19:03:52 +0200
Subject: [PATCH] [skip ci] fix(wav format): fix default WAV format for audio
 storage

---
 src/lerobot/microphones/portaudio/microphone_portaudio.py | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/src/lerobot/microphones/portaudio/microphone_portaudio.py b/src/lerobot/microphones/portaudio/microphone_portaudio.py
index 25f4a8a66..106f9060d 100644
--- a/src/lerobot/microphones/portaudio/microphone_portaudio.py
+++ b/src/lerobot/microphones/portaudio/microphone_portaudio.py
@@ -197,10 +197,11 @@ class PortAudioMicrophone(Microphone):
         # Can only be run on a single process/thread for file writing safety
         with sf.SoundFile(
             output_file,
-            mode="x",
+            mode="w",
             samplerate=sample_rate,
             channels=max(channels),
-            subtype=sf.default_subtype(output_file.suffix[1:]),
+            format="WAV",
+            subtype="FLOAT",  # By default, a much lower quality WAV file is created !
         ) as file:
             while not event.is_set():
                 try: