Digigram Software for IQOYA SERV/LINK 88 (Upgrades from 8 Codecs to 16) - Manual (Page 119)

IQOYA SERV/LINK user manual
119
Click on “Apply” to confirm your choice.
9.3.1.3 Advanced settings −> System −> Audio setup
This page allows setting the processing granularity and the working sampling frequency value IQOYA SERV/LINK
Click on a parameter field to be able to change the values.
Note :
● From firmware 2.13, parameters for silence detection are configurable for each input program, and for
each decoding priority of an output program.
● From firmware 2.13, backup switching criteria can be configured for each output program
(Receive/Program). These criteria were global with previous firmware versions.
Click on “Apply” to confirm your changes.
Parameter Description
Processing granularity This is the smallest amount of data processed at a time by IQOYA. The lower the processing
granularity, the lower the latency. Possible values are 1ms, 2ms, 3 ms, 4 ms.
However, a value of 1ms may lead to audio underruns, depending on the features enabled on
IQOYA. In case this happens, it is necessary to increase the processing granularity value.
Not: the payload size of an IP frame is adjustable via parameter Payload size, from the Send
page (see paragraph Encoder parameters configuration).
Sampling frequency It defines the working sampling frequency of IQOYA. Note that received and generated IP
streams can carry audio at a different sampling frequencies (in which case a high quality
frequency change is applied).
When sampling frequency is set to 48 kHz, IP streams can be at 48 kHz, 32 kHz, 16 kHz (G722),
and 8 kHz (G711). Note that 44.1 kHz is allowed for a HTTP stream.
When sampling frequency is set to 44.1 kHz, IP streams must be at 44.1 kHz.