A METHOD OF EMBEDDED LOW SPEED SIGNALING IN BAND LIMITED VOCODER APPLICATIONS
Original Publication Date: 1994-Feb-01
Included in the Prior Art Database: 2002-Feb-27
Presented is a method of embedding low speed digital information in a band limited digital vocoder data stream. Advantages of the method are 1) an orthogonality between the vocoder data and the embedded signal which allows the both signals to occupy the data channel simultaneously without increasing the signal bandwidth, and 2) recovery of the vocoder stream without degradation.