References for Digital Signal Processors

• UC Berkeley CS 252 Spring 1998 Lecture Slides
  CS 252 is UC Berkeley's version of ECE 1739 at the University of Toronto. These are David Patterson's lecture slides when he gave the course during the Spring '98 semester. Lectures 8 and 9 cover DSP processors. Lecture 8 is Patterson's overview of DSP processors and comparison of the DSP and general-purpose MPU cultures. Lecture 9 consists of two presentations by guest lecturers:
  • Introduction to Architectures for Digital Signal Processing, Bob Brodersen, Infopad
    A more detailed description of DSP processors and DSP applications.
  • The Evolution of DSP Processors, Jeff Bier, Berkeley Design Technology Inc.
    A history of DSP processors and comparison of architectural details with general-purpose microprocessors.

Applications

• ITU G7xx Standards
  In the middle of this Web page is a summary of the five major ITU-T audio and speech compression recommendations:
  • G.711: conversions among mu-law, A-law and linear Pulse Code Modulation (PCM) samples
  • G.722: 16-bit audio compression using a sub-band adaptive PCM (SB-ADPCM) algorithm
  • G.726: speech compression/decompression using an ADPCM algorithm; for mu-law and A-law telephone samples
  • G.727: embedded ADPCM algorithm supporting 5-, 4-, 3-, and 2-bits per sample
  • G.728: speech coding at 16kbps using a low-delay code excited linear prediction (LD-CELP) algorithm; computationally intensive but provides excellent speech quality; low-delay feature makes it ideal for teleconferencing applications

• International Telecommunication Union
  The governing body for coordinating global telecom networks and services among governments and the private sector. Has complete on-line list of all the ITU recommendations such as the ITU-T Series G Recommendations for Transmission systems and media, digital systems and networks, which include the G7xx standards for audio and speech compression. But only paid subscribers can obtain actual descriptions and test vectors.