Construct the object
import ambeserver
svr = ambeserver.AmbeServer()
Open a connection
svr.open()
svr.reset()
svr.init()
Set some parameters
svr.set_chanfmt("always", "always")
svr.set_spchfmt("always", "never")
svr.set_ecmode(NS_ENABLE=True, DTX_ENABLE=True)
Decode AMBE audio
aud = svr.decode_ambe(ambe_bytes)
Encode AMBE to audio
ambe_bytes = svr.encode_speech(samples)
The USB interface API is the DVSI-3000R chip API
https://www.qsl.net/kb9mwr/projects/dv/codec/AMBE-3000R_manual.pdf