The APT AoIP Codec Module offers audio encoding/decoding, IP transport, management and auxiliary data on a single, plug-in module. This enhances the Audio over IP performance of the APT Multi-Channel Codec System as well as increasing its scalability and flexibility.
Fully compatible with the many hundreds of existing units already deployed worldwide, each AoIP card can deliver two independent stereo audio channels on multiple IP streams using multiple unicast or multicast.
The APT AoIP codec module offers the entire range of audio formats and modes meeting the audio industry’s requirements: simplex, duplex, AES/EBU, AES/EBU with analog backup, analog with HI/LO or 600Ω impedance.
The module offers the same broadcast-grade audio for which the Multi-Channel Frame is renowned with support for a wealth of standards such as: Linear PCM 16/24Bit, aptX® Enhanced16/24Bit, MPEG1/2 LII, MPEG2 HE-AAC & HE-AACv2, MPEG4 AAC LC/LD/ELD, HE-AACv1/v2, OPUS.
The APT AoIP Codec Module is also able to support 85kHz of audio bandwidth and scale the sample rate to 192/128kHz, enabling a digital MPX signal to be sent on an AES stream. The output of the audio codec can therefore be transferred directly to the modulator of the exciter. This 100% digital path eliminates D/A and A/D conversions which may cause degradation of signal quality and could introduce distortion.
