Factory supply all final audio mixes for TV as 48.0khz / 16 bit / Stereo wav files to sync with first frame of picture. Current level specifications are as follows: — PPM To peak at 6 on a Standard PPM (Type IIa) Broadcast Meter with a reference tone of –18db. — ITU Loudness measurement in accordance with ITU Rec. BS.1770 and BS.1771. Peak level at a minimum of -3db not exceeding 0db, with reference level of -18dBFS and a 4 second rolling integration window. Unless specified by the client, Factory will supply PPM6 mixes as standard. Factory cannot be held responsible for any changes to mix specifications upon delivery to client or external facility.