If we hit play on, say, a 192kHz hi-res lossless stream but the Audio MIDI Setup app is set to 44.1kHz, we lose data. Upsampling and downsampling are collectively referred to as resampling. audio samples are thrown away by the operating system when the incoming sample rate sits above the Audio MIDI app’s output setting.audio samples are interpolated by the operating system when the incoming sample rate sits below the Audio MIDI app’s output setting.Why? MacOS will adjust the data’s output according to the settings specified in the Audio MIDI Setup app. Unless we are extremely vigilant, the audio data that we pulled from Apple’s servers isn’t necessarily that which reaches our DAC. Running Apple Music on MacOS? For hi-res enthusiasts looking to get the very best from Apple’s lossless content, the gotcha is an absence of automatic sample-rate switching.
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