Audio Sample Rate Converter
Resample decoded audio to a selected sample rate in your browser using OfflineAudioContext, then export 16-bit PCM WAV.
What sample-rate conversion does
Sample rate is the number of audio samples represented per second. Build 105 renders the decoded signal into a browser OfflineAudioContext configured for the selected target rate, then exports those rendered samples as WAV.
When to use it
Resampling can help make files compatible for merging/crossfading, prepare speech for systems that expect a particular rate, or standardize project assets. 44.1 kHz is common for music distribution workflows and 48 kHz is common in video workflows, but the correct rate depends on the destination.
Quality limitations
Upsampling does not create missing high-frequency detail, and repeatedly resampling audio is unnecessary. Browser resampling quality is provided by the active browser/runtime and is not claimed to be identical to a particular professional mastering resampler. Build 105 does not change playback duration or pitch intentionally.
Privacy and metadata
Processing is local when OfflineAudioContext is available. Output is 16-bit PCM WAV and does not preserve ID3/artwork or codec-specific metadata.
FAQ
Does 44.1 kHz to 96 kHz improve MP3 quality? No. It changes the sample representation but cannot restore information already lost. Is this time-stretch? No. Duration is preserved within normal render rounding.
Related tools
Use Audio Crossfade or Audio Merger after standardizing sample rate, and Mono/Stereo Converter when channel counts differ.