Specifications

5.1-Channel Production Guidelines Preparing the Source Delivery Master
6-2
channel is not used, track 4 may contain a mono Surround (S) signal. Alternative
practices exist within various industries, so it is imperative to check the source and
accompanying documentation.
Table 6-1 Channel-to-Track Layout Example
Channel L R C LFE LS RS Lt Rt
Track 12345678
6.2 Channel Levels
Relative channel levels should assume each speaker delivers identical acoustic sound
pressure levels to the listener, excluding the LFE channel which is intended for
reproduction at +10 dB SPL (with respect to the main channels within the same 3–
120 Hz passband). Assuming that a Surround (S) signal is delivered to a single
speaker and two Surround signals (LS, RS) are each delivered to individual speakers,
Surround levels should be identical to the front channels.
In film sound practice, stereo Surround channel levels are typically recorded +3 dB
relative to the front channels. This is done to compensate for the -3 dB Surround
levels (relative to the front channels) encountered in cinema monitor systems. In such
cases, select the 3 dB Attenuation option for the LS and RS channels in the Dolby
Digital encoder.