Method and system to play background music along with voice on a cdma network

An apparatus for compressing an audio signal, comprising:

• a readable medium for at least one of retrieving or archiving date;
• and
• a processor for performing a method, the method comprising:
• receiving a segment of an audio signal;
• selectively disabling noise suppression;
• if noise suppression is not disabled, filtering the segment in a noise-suppression module;
• calculating an autocorrelation coefficient and an line spectral pairs (LSP) coefficient;
• predicting a short-term coefficient according to the LSP coefficient;
• predicting long-term coefficients according to the LSP coefficient;
• calculating one or more bandwidth-expanded correlation coefficients;
• determining, according to the short-term, the long-term, and the bandwidth-expanded correlation coefficients, a type of packet in which to encode the segment;
• selecting an encoding rate from among a full rate encode, a half-rate encode, and an eight-rate encode based on the noise suppression setting, wherein the setting is at least one of enabled or disabled based on the type of network and wherein a higher encoding rate is selected for transmitting to a mobile device;
• and
• forming the segment into a packet of the determined type and selected rate.