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DTS-HD Master Audio Suite™,

User Guide

v 2.5

Confidential - Do NOT Duplicate 26 DTS Document No.: 9301F55800D

17781 v1

7.2.10 Constant Bit Rate Parameters

The Constant Bit Rate Parameters section allows the user: to specify the bit rate to be used in the core

substream, to select Rear Ch -3 dB attenuation, to perform ES phase shifting and to inform the encoder

that the input material for a 6.1 ES Matrixed channel layout has been pre-mixed (indicated by selecting

the ES Pre-Mixed button). Figure 7-8 depicts the interface for these settings.

For DTS-HD Master Audio and DTS-HD High Resolution Audio stream types, the encoded file that is

created consists of a core substream and an extension substream. The core substream is that part of the

DTS-HD stream that can be decoded by all current DTS Digital Surround decoders. Whenever a DTS-

HD Master Audio stream is created, the selectable bit rate on the user interface applies to the core

substream. For DTS-HD High Resolution Audio streams, internal to the encoder, the core substream bit

rate will be set to the maximum value (typically 1.5 Mbps but varies by channel count) and the extension

substream bit rate encoded will be the difference between the core substream bit rate and the value

specified in the user interface.

Figure 7-8 Constant Bit Rate Parameters

7.2.10.1 Supported Bit Rates

Depending on the parameters and spectral content of the input source material, DTS-HD Master Audio

utilizes variable bit rate coding (VBR) for its extension substream component. As such, the bit rates

referred to in this table for DTS-HD Master Audio applies only to the DTS Digital Surround constant bit

rate (CBR) core substream.

For the selectable destination format, stream type, channel layout and sample rate (Fs), the supported bit

rates are identified in Table 7-5 below. The user interface will always default to the highest available bit

rate for the selected destination format, stream type, channel layout and sample rate such that the default

settings can create the highest quality DTS audio stream.

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DTS PRO Series Guia do Utilizador Página 34