AC-3 AUDIO SYSTEM FOR PULSE CODE MODULATION AUDIO SIGNALS

摘要

Purpose: the AC-3 sound system audio signals for PCM (pulse-code modulation) are provided to decline mixing, and audio signal is with 5.It converts and exports result as a digital signal in 1 channel. Construction: the AC-3 sound systems for pulsewidth modulation audio signals include an AC-3 audio decoders (10), once downmix closes (20), a selector (50), a digital output format (40) and a controller (60). AC-3 audio decoders (10) compression input sound bit stream signal enters its stream signal of an AC-3, with 5.1 channel signal decodes result audio bitstream signal. Decline mixing (20) combines 5.Twin-channel, the output combination all 5. of 1 channel signalThe overall digital audio signal of 1 channel signal. Selector (50) selects one of the AC-3 bit stream signals of overall digital audio signal and a compression. Selected signal is converted to a digital form by digital output format (40). Controller (60) control selections device is to select the signal of user preference.