The following options are available in the Audio panel of the Export Movie Settings dialog box and the Export Audio Settings dialog box:

Compressor

Specify the codec for Adobe Premiere Pro to apply when compressing audio. The codecs available depend on the File Type you specified in the General panel in the Export Movie Settings or Export Audio Settings dialog box. Some file types and capture cards support only uncompressed audio, which has the highest quality, but uses more disk space. Check with your capture card’s documentation before choosing an audio codec.

Advanced Settings

Click to access codec‑specific options. This option is not available for all codecs. Consult the codec’s documentation or its developer’s website for more guidance on choosing advanced settings.

Sample Rate

Choose a higher rate to increase the frequency at which audio is converted into a discrete digital value, or sampled. Higher sample rates increase audio quality and file size; lower sample rates decrease quality and file size. However, setting the sample rate higher than the audio’s sample rate at the time of recording will not increase quality. Setting a different rate than the source files’ audio, or resampling, requires additional processing time. You can avoid resampling by capturing audio at the same rate at which you want to export it.

Sample Type

Choose a higher bit depth to increase accuracy of audio samples, which can improve dynamic range and reduce distortion, especially if the audio undergoes additional processing, such as filtering or resampling. Higher bit depths also increase processing time and file size; lower bit rates reduce processing time and file size. However, setting the bit depth higher than the audio’s bit depth at the time of recording will not increase quality.

Channels

Specify how many audio channels are in the exported file (see About channels in audio clips). If you choose fewer channels than are in the sequence’s master track, the audio will be downmixed (see About audio tracks in a sequence).

Interleave

Specify how often audio information is inserted among the video frames in the exported file. See your capture card documentation for the recommended setting. A value of 1 frame means that when a frame is played back, the audio for the duration of that frame is loaded into RAM so that it can play until the next frame appears. If the audio breaks up when playing, the interleave value may be causing the computer to process audio more frequently than it can handle. Increasing the value lets Adobe Premiere Pro store longer audio segments that need to be processed less often, but higher interleave values require more RAM. Most current hard disks operate best with a 1/2‑ to 1‑second interleave value.