First words after pauses cut off in audiobooks on iPhone with some Bluetooth and wired devices

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ChatGPT says:

It’s not the iPhone’s audiobook app itself causing it — it’s the way certain Bluetooth or wired audio devices wake up from idle or engage processing after silence.

Understand why it happens

• Bluetooth devices: Many have a power-saving mode where the audio stream is muted during silence and reactivates when sound returns, but with a slight delay.
• Wired devices (like car radios): Some head units also apply a “mute when idle” or have an AGC / noise gate that kicks in after pauses.
• Certain audio codecs (e.g., SBC, AAC over Bluetooth) can add buffering delays when the stream restarts.

On an iPhone, you can listen to audiobooks from several sources. Which one is giving you the trouble?

• Audible – Amazon’s audiobook service with a massive catalog.
• Apple Books – Apple’s built-in store for purchasing and listening to audiobooks.
• Libby – Free audiobook borrowing from public libraries (requires a library card).