Make sure that the codecs are compatible – do they both have an audio coding protocol in common?
Try setting each codec manually to use exactly the same bit rate, sample rate, mono/stereo mode and audio coding protocol. i.e. over-ride the ‘auto’ settings. Try a different protocol. The two almost universal ones are: MPEG Layer II at 64 kbits mono and G.722. If neither of these work, there’s something very wrong. If this is a regular problem for you, then you should take a look at our page on the ISYS Pro system, which features a unique ‘auto-detect’ algorithm. As far as we’ve seen it in operation, if it’s going to connect, ISYS Pro tends to get it right first time very nearly all of the time. Live connections and coding delays The shortest possible codec delay is obtained using G.722 or APTx. MPEG-2 delays at FM broadcast quality are around 200ms each way. ISYS Pro reduces that delay by around half. However, the really clever thing to do is to split-code. That is, you send ‘cue’ via G.722 and receive the audio via the higher-quality MPEG-2. The very latest software update enables t
