LoFi: A TURBOchannel Audio Module
Thomas M. Levergood · 1993
LoFi is a single-slot TURBOchannel module designed as a research prototype to interface to a variety of audio sources and sinks. LoFi contains two 8 KHz CODECs, a digital signal processor with 32K words of static memory, a 44.1 KHz stereo digital-to-analog converter, and analog and digital telephone line interfaces. This report is the technical reference for the LoFi module and includes descriptions of the hardware design and programming interface. A source code kit containing LoFi support software is available by anonymous FTP. Keywords: audio hardware, digital signal processor, multimedia, telephone interface c flDigital Equipment Corporation 1993. All rights reserved. Touch-Tone is a trademark of AT&T. UNIX is a trademark of Unix Systems Laboratories. IOM-2 is a trademark of Siemens AG. Digital Subscriber Controller is a trademark of Advanced Micro Devices, Inc. The following are trademarks of Digital Equipment Corporation: Alpha AXP, DEC, DECaudio, DECstation, DECtalk, TURBOchann...