ANALOG AUDIO SIGNAL TRANSMITTER AND RECEIVER AS WELL AS ANALOG AUDIO SIGNAL TRANSMISSION METHOD

• Main Author: IWAKUNI KAORU
• Format: Patent
• Language: English
• Published: 09.12.2004
• Edition: 7
• Subjects: ELECTRIC COMMUNICATION TECHNIQUE; ELECTRICITY; TRANSMISSION

PROBLEM TO BE SOLVED: To provide an analog audio signal transmitter capable of efficiently applying band extension technology of an analog audio signal to analog audio transmission processing. SOLUTION: The analog audio signal transmitter 200a is provided with a carrier wave generation part 204 which generates carrier waves, a timing signal generation part 203 which generates timing signals by every prescribed time, an SBR parameter calculation part 201 which has frame structure and generates band extension information for restoring a band of the analog audio signal to be lost by transmission whenever the timing signal is received, a synchronization adjusting part 202 which adjusts transmission timing of the band extension information and the analog audio signal set as a target of the band extension information whenever the timing signal is received, a first modulation part 205a which modulates the carrier waves by a prescribed system with the band extension information and a second modulation part 206a which modulates the carrier waves outputted from the first modulation part 205a with the analog audio signal. COPYRIGHT: (C)2005,JPO&NCIPI