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Audio encoders
There are 3 audio encoders: one G.7xx encoder, one AAC encoder and one Linear PCM encoder.
Up to 3 encoders can be used providing that they are requiring the same sampling rate. This is
tested and enforced by the web service layer, that will not allow simultaneous use of two
encoders requiring conflicting sampling rates.
WARNING:
important side-effect: producing G.711 out of de-embedded audio might thus be
available only when embedded audio is sampled by the source at 8kHz.
Audio outputs set
The audio stream can feed:
n
Two digital audio channels of the HDMI Output
n
Left and Right channels of the analog audio output through a stereo DAC converter.
Note:
HDMI audio output is not available in firmware version 1.0
AUDIO INPUTS
Characteristics
Description
Type
Stereo line-level analog input
Level control
Fixed
Sampling rate
Fixed: 48 kHz
Analog Audio Input Port
Characteristics
Description
Encoding standard
PCM G.711 µ-law
Sampling rate
8 kHz
Bit rate
64 kbps
G.711 encoder
Characteristics
Description
Encoding standards
AAC-LC
Sampling rate
selectable: ***TBD***
Bit rate
140 kbps
AAC encoder
Picolo.net
Handbook
Functional Specifications
