公开(公告)号：CA2007012A1

公开(公告)日：1990-08-14

申请号：CA2007012

申请日：1990-01-03

Applicant: MOTOROLA INC

Inventor： ERICKSON PAUL M ,  MATZ JOHN E ,  GROCH TIM J ,  STEDMAN ROBERT B ,  SHAUGHNESSY MARK L ,  KANDAH TAISIR Y

IPC: H04H20/67

公开(公告)号：CA2007012C

公开(公告)日：1993-06-01

申请号：CA2007012

申请日：1990-01-03

Applicant: MOTOROLA INC

Inventor： ERICKSON PAUL M ,  MATZ JOHN E ,  GROCH TIM J ,  STEDMAN ROBERT B ,  SHAUGHNESSY MARK L ,  KANDAH TAISIR Y

IPC: H04H20/67 ,  H04B1/04

Abstract: A simulcast broadcast uses digital signal processing techniques to scale pulse coded modulation samples of a signal for broadcast. Samples are adjusted to fully utilize all quantization levels representable by an 8-bit word. Time delay is adjustable using digital techniques by writing and reading data into and out of a RAM. Signal amplitude is adjustable by multiplying samples by a numeric factor. A computer can be used to adjust processing delay and amplification of the digital signal processor.