Operation Manual

Roxio Toast 10 User Guide
www.roxio.com
110
6 If you selected Custom, choose the audio encoding options:
■
Audio Format: Choose Dolby Digital or uncompressed PCM. In
almost all cases, Dolby Digital is the best choice. It uses less disc
space, so you can fit more video on the DVD, and the sound
quality is almost the same as PCM.
■
Data Rate: Choose the bit rate to encode the Dolby Digital
audio. Higher bit rates can produce slightly better sounding
audio, but use more disc space. Toast uses 192 kbps by default.
■
Dynamic Range Compression: Enabling dynamic range
compression reduces the range between loud and soft sounds in
order to make dialogue more audible, especially when listening at
low volume levels.
PCM audio should be used if you want to maintain 100% fidelity
and only if the audio source is already uncompressed PCM, such
as tracks on an audio CD or a high quality audio recording. If the
audio files are already compressed (such as MP3 or AAC songs in
your iTunes library) do not use PCM—it will not improve the
sound quality.
Toast records PCM at 48 kHz / 16 bit levels or 48 KHz / 24 bit
levels, which are higher than standard CD quality. Audio that has
been recorded at 96 kHz / 24 bit is downsampled automatically
unless you choose the 96 kHz / 24 bit option, which maintains
the higher quality but significantly reduces disc space.
When you choose PCM, any existing Dolby Digital audio files
will be “passed through” without reconverting to PCM.
7 Click OK.
Note You can also click Reset Defaults if you want to reset the
video and audio encoding to the default settings when Toast was
first installed.
The Toast Preferences contains options for setting the appropriate TV
standard for your video discs.