I have a question in regards to latency increasing? I have an embedded system that is using pulseaudio 1.1 (sorry, this is what is supported at the moment for our platform). We have connected two sound card devices using loopback. One is a GSM modem with a sink/source and the other is a audio codec (AIC3104). Using loopback module to connect the sink/source and source/sink GSM and Codec. The delay is primarily from the Codec Mic source to the GSM sink. So over the GSM I hear delayed audio from the mic of the codec. After waiting some time after pulse has been running the delay becomes more significant (several secs, minutes even) The GSM device uses a fixed sample spec: s16le 1ch 8000Hz, the codec is at sample spec: s16le 2ch 44100Hz. (which is programmable according to the datasheet) The codec can sample at different rates.
