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Genie Distribution WNET Manual v3
© Tieline Research Pty. Ltd. 2020
Overview of aptX Enhanced Audio Coding
aptX® Enhanced audio coding is used by thousands of radio stations to deliver very low delay audio
for IP broadcasts and is ideal for high quality studio-to-transmitter links and audio distribution. It
delivers outstanding audio quality with exceptionally low delay across a range of IP networks.
32kHz or 48kHz sample rates are available at either 16 bit or 24 bits per sample. aptX Enhanced
has a minimum connection bit rate of 128kbps per channel and offers 10Hz to 24kHz frequency
response. 24 bit, 48kHz aptX Enhanced at the maximum bit rate of 576kbps delivers >120dB of
dynamic range.
aptX® Enhanced is supported over ISDN at the following sample and bit rates:
Encoding
Bit rate Required
B Channels Required
aptX® Enhanced Mono 16 bit, 32 kHz
128 kbps
2
aptX® Enhanced Mono 16 bit, 48 kHz
192 kbps
3
aptX® Enhanced Mono 24 bit, 32 kHz
192 kbps
3
aptX® Enhanced Stereo 16 bit, 32 kHz
256 kbps
4
Overview of Opus Algorithm
Opus is a highly versatile open source audio coding algorithm. It incorporates technology from the
well-known SILK and CELT codecs to create a low latency speech and audio codec. It is a variable
bit rate algorithm ideal for live broadcast situations because of its capacity to deliver high quality,
real-time Audio over IP (AoIP) at low bit rates. Visit
There are three Opus algorithm configurations available:
Algorithm
Recommended connection for on-air use
Opus Voice
High quality low bit rate remotes (9.6kbps -64kbps)
Opus Mono
Very high quality mono remotes, STLs and audio distribution (48kbps -128kbps)
Opus Stereo
Very high quality stereo remotes, STLs and audio distribution (64kbps -256kbps)