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Sampling Frequency
The following table shows the most common sampling frequencies of digital inputs and the
uses with which they are most often associated.
Listening Mode Options and Usage
Listening Mode Options
The SSP 200 listening modes allow users to upmix or downmix audio content to match
their speaker configuration. By default, all listening modes are set to Auto. The auto setting
maximizes source formats to the required speaker configuration based on what is available
in the room. For example, Dolby Atmos or DTS:X downmixes to 5.1 if there are only 5 full
range speakers and a sub‑woofer in the speaker configuration.
Source formats that natively use fewer speakers such as an analog source or the original
5.1 release of older DVDs can be upmixed so all of the speaker channels are utilized.
Auto
The SSP 200 selects an appropriate output mode based on input format and available
ouput channels. The encoded channels pass through to the outputs if the required output
channels have been enabled in the speaker configuration. Otherwise, the encoded channels
are downmixed accordingly.
Stereo
This mode plays a stereo source in its pure, unprocessed form. Multichannel formats are
downmixed to a stereo output signal.
Mono
This mode plays mono source material or stereo source material that has been mixed to
a mono form. It can be used to downmix a multichannel source format into a single mono
output signal.
Additionally, the user can select whether the mono signals are output to the center channel
(Center Only) or a dual mono signal is sent to the right and left front channels (Front L+R
Only). The default option is Front L+R Only.
Sampling
Frequency
(kHz)
32
Used for some cassette recordings, speech, and all other audio where
smaller files are desired, with only slight compromise on sound quality. In
the past, used with products such as NICAMs.
44.1
Audio CD, also commonly used with MPEG‑1 audio (VCD, SVCD, MP3).
Adopted from the PCM adaptor using PAL video tapes (294 lines by 3
samples by 50 frames per second).
48
Digital sound used for mini DV, digital TV, DVD, DAT, films, and professional
audio.
88.2
Sampling rates used by professional recording equipment when the
destination is CD (multiple of 44.1 kHz).
96
DVD‑Audio, some LPCM DVD tracks, DTS 96/24, and DTS 96/24
ES Matrix 6.1 source formats always output this sampling frequency.
192
Blu‑ray and HD‑DVD, Dolby TrueHD and DTS‑HD Master Audio output
this sampling frequency when there are six discrete channels.
Use
SSP 200 • Reference
27
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