Sound Devices 833, User Manual

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Glossary
¼-inch jack
Common analog audio connector used as both an audio input and output. When a ¼-inch jack is described as TRS (tip-ring-sleeve)
it can be wired as either a balanced connection or as a two-channel connection. ¼-inch headphone jacks are typically wired as TRS
stereo jacks.
3.5 mm jack
Common small-format audio connector. Often used for headphones and -10 dBV signals for portable audio devices.
Advanced Audio Coding (AAC)
An audio coding standard for lossy digital audio compression. Designed to be the successor of the MP3 format, AAC generally
achieves better sound quality than MP3 at the same bit rate.
AES3
A standard for the exchange of digital audio signals between professional audio devices. An AES3 signal can carry two channels of
PCM audio over balanced, 110 ohm interconnections. AES3 is most commonly interconnected with XLR-3 cables.
AES42
A digital interface protocol for microphones and microphone inputs. Microphones conforming to this standard directly output digital
audio through an XLR or XLD male connector, rather than producing an analog output. AES42 microphones require powering.
Attenuation
A reduction in the level of an audio signal. Attenuation can be applied to both analog and digital signals. A fader is used primarily to
attenuate signals, though a small amount of positive gain is often available on a fader.
bEXT chunk
Broadcast WAV extension data added to the audio data in a WAV file. The bEXT chunk includes timecode and user bit data. For
systems that do not recognize the bEXT chunk this additional information is ignore
Bit depth
When converting between analog and PCM digital audio the amplitude of an analog signal is measured in finite steps, measured in
bits. Higher bit rates result in greater resolution of amplitudes, resulting in higher dynamic range. 24-bit audio, with a theoretical
maximum dynamic range of 144 dB, is the standard bit depth used throughout the audio chain for production.
Broadcast WAV, BWAV
Broadcast WAV files are WAV files with additional, non-audio data, such as bEXT chunk data. Broadcast WAV files offer timecode
support.
Bus
An audio path that is the destination of one or multiple (mixed) channels. A bus is typically routed to an output, a record track, or
both.
Camera return
An audio input on a mixer designed to receive the output, typically the headphone output, of a camera. Camera return inputs allow
the user to monitor the level and quality of the signal received at the camera. On the 833 the Aux In can be used as a source for
any channel.
CEDAR sdnx™
CEDAR Audio Ltd.’s highly-regarded noise suppression technology is available as an optional paid plugin from
store.sounddevices.com. Use CEDAR sdnx to reduce unwanted background noises so you can better capture dialog. CEDAR sdnx
has near-zero latency and one simple control for adjusting the amount of suppression. Up to 8 instances of CEDAR sdnx are
available per mixer-recorder/device. These instances can run on any combination of isolated channels (excluding 17-32 on Scorpio)
or bus.
Channel
A “slot” of a mixer that is controllable and routable. A given input feeds the channel and the channel’s settings process and route the
audio as required. It can also be thought of as the path its selected input signal takes on its way to its record track, a bus, or an
output.
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