Even if you choose a lower Default Sample Format than 32-bit float, Audacity will never downconvert a file that has a higher bit depth, as shown in the following table for WAV and AIFF imports using the standard uncompressed files importer. Therefore by default an imported file will show in the Track Control Panel as 32-bit float, even if its original bit depth is lower. Generally, Audacity imports files at the sample format (bit depth) specified at Default Sample Format in Quality Preferences. However, once there is already an audio track of any origin in the project (either an imported file, a recording or generated audio), importing an audio file will never change the project rate. The Project Rate determines the sample rate a file will be exported at, so no further adjustment is needed to export that file at its original rate. as described below), the Project Rate control in Selection Toolbar changes if necessary to reflect the rate of the file. When importing a file into an empty project window (as always happens when using File > Open. Sample Rate and Sample Format of imported filesĪudacity always imports files at their original sample rate, as displayed in the Track Information Area of the Track Control Panel.
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