Sound · MP3 · M4A for iPhone
The sound of someone knocking on a metal door
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Need the sound on iPhone? Download M4A for iPhone — iOS opens the file without a converter or iTunes.
Free for video, games, clips, iPhone and any creative projects. Credit is optional.
Download and playback
“Download for free” saves the MP3. For playback on an iPhone, choose “Download for iPhone” and save the M4A file in Files.
The player shows the duration after loading the audio. Use the loop button to repeat the recording before downloading.
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