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# Things to Consider When Working with Dolby E

When working with Dolby E encoded audio tracks in Smoke you must take into account the following considerations:

- A Dolby E audio stream must not be altered in any way during capture, output, or in the timeline. For example, there can be no gain, EQ, phase, or soft-effects applied to the encoded audio tracks.
- There can be no gaps between Dolby E encoded audio segments.
- Sub-frame editing is not possible.
- Scrubbing of Dolby E-encoded audio is only possible at normal playback speed.
- When working with a mix of Dolby E tracks and standard audio tracks, you must ensure that the microfades between the audio segments in standard audio tracks are set to 10 microseconds or less. This will avoid transition pops from occurring in the standard audio tracks without breaking the Dolby E stream.
- The Dolby E DP-571 Encoder and DP-572 Decoder each have a 1-frame audio delay between input and output. Therefore, editing of the Dolby E stream must be done accordingly.