Tieline Bridge-IT, User Manual

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172 Bridge-IT Manual v4.0
© Tieline Research Pty. Ltd. 2019
AAC-LD
AAC-LD (Low Delay AAC), AAC-ELD (Enhanced Low Delay AAC) and AAC-ELDv 2 are
optimized for low latency real-time communication. AAC-LD is suited to bit rates of 96kbps or
higher for stereo audio.
AAC-ELD
AAC-ELD is optimised for high quality stereo connections from 48 - 96kbps and performs
better at these bit rates when compared with AAC-LD.
AAC-ELD v 2
For stereo connections below 48kbps AAC-ELD v2 will deliver better performance than AAC-
ELD down to 24kbps.
Overview of aptX® Enhanced Audio Coding
Important Notes: aptX® Enhanced is only available if the aptX® Enhanced license has
been purchased and uploaded into the codec. For more information see Installing Software
Licenses .
aptX® Enhanced audio coding is used by thousands of radio stations to deliver very low delay
audio for studio to transmitter links, audio distribution and remote broadcasts. It delivers
outstanding audio quality with exceptionally low delay across a range of IP networks. It is ideal for
high quality studio-to-transmitter links and audio distribution.
32kHz, 44.1kHz or 48kHz sampling 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.
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
http://www.opus-codec.org for more
info.
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)
Configuring an Algorithm in the Codec
1. Press the HOME button to return to the Home screen.
2. Use the navigation buttons on the front panel to select Connect and press the button.
3. Select IP and press the button.
4. Select your preferred IP Session mode and press the button.
5. Use the down navigation button to select Setup and press the button.
6. Navigate to Algor'm and press .
7. Select the mono or stereo algorithm that you want to connect with and press .