tom@syssoft.com (Rodentia) (12/21/90)
Programs such as Reply, Remac (both for DOS), and Sounder (for
Windows) use pulse width modulation (PWM) about 6 bits deep at
22KHz for high quality sound on the PC speaker. Another package
commonly distributed as DIGITIZE.ARC, uses one bit deep sampling
at about 16KHz.
A friend of a friend supposedly wrote some shareware program
that include speech as a secondary feature. He later received
a letter from some company claiming a patent on some aspect of
the sound generation technology he was using. I do not know
if he used digitized sound exclusively or composed from
text and/or phonemes.
My question is this: Does anyone know of patents on either
of the digital playback techniques described above? I have
tried to track down the original FOAF, but he's in another
state, etc. Please copy me e-mail on all replies as we've
just changed newsfeeds and I'm not confident that all news
is getting through. Thank you.
--
Thomas Roden tom@syssoft.com
Systems and Software, Inc. Voice: (714) 833-1700 x454
FAX: (714) 833-1900