ScoopTeam - User manual - Draft 0002
9
2.2. Audio encoding and decoding
ScoopTeam features several coding algorithms. Their availability depends on the configuration for
transmission: network used and single/double codec mode.
2.2.1. Single codec mode
In this configuration, the selected network interface (ISDN or IP) is used to set up a link with a single
remote device. A single encoder/decoder processes one or two mono audio channels:
With a
mono
codec, only the program channel is processed and transmitted over the selected
network.
However, when the mobile option is installed, the mobile voice channel can be used for the
Coordination channel.
With a
dual mono
codec, two audio channels are transmitted (Program and Coordination).
The table below synthetically describes the capabilities in the different cases:
Table 2 – Single codec - Available coding depending on network
Note 1: the “IP” case does not depend whether a wired interface (Ethernet) or mobile interface (3G/LTE)
is used for the network access.
16
24
48
Mono
Dual
Mono
Dual
G711
64
NYA
G722
64
G722-H221
64
NYA
G722-H242
64
NYA
MPEG L2
NYA
64
MPEG L2
NYA
128
NYA
NYA
MPEG L2
192
MPEG L2
256
AAC-LC
16 => 56
NYA
AAC-LC
64
NYA
AAC-LC
96
NYA
AAC-LC
128
NYA
NYA
NYA
AAC-LC
192
NYA
AAC-LC
256
NYA
HE-AAC
16 => 56
NYA
HE-AAC
64
NYA
HE-AAC
96
NYA
HE-AAC
128
NYA
NYA
NYA
AAC-LC LOAS
64
HE-AAC LOAS
64
OPUS
12 => 192
Linear L16
768/1536
Linear L20
960/1920
Linear L24
1152/2304
Codec
Frequency (kHz) Net bit rate
(kbit/s)
IP
ISDN