INTERNATIONAL BUSINESS MACHINES CORP. (IBM) - continued
Armonk, New York
SSSHP 163 IBM TASS-III ELECTRONIC CHARACTERIZATION
(Pages 40 - 43z)
CONTENTS
Page Description
No.
40. Diphone Library 5B
File format, data format, hexadecimal to decimal conversion, byte
assignment to synthesizer control channels, staggered byte-transfer,
graphic display of control data.
40B-C. TASS-III block diagram and level calibration
Discussion of page 40H.
40D-E. Hex-to-decimal conversion charts
40F-G. IBM 2250 Graphic Display, control data
40H. TASS-III Block Diagram
41A-H. TASS-III transfer functions
Complex-plane transfer functions for the TASS-III circuits.
Fricative filter tuning formulas. Simplified circuit drawings of
Hiss Gen, summers, digital attenuators, formant filters, and
fricative zero.
42A. HISS Low Pass Filter response
42B. Filter KH transfer function measurement.
KH compensates for missing formants above F4, making first four
formant amplitudes about the same (see attachment 42D).
42C-F. Formant-chain transfer function measurements
42G-H. Measurement of Fn-phase importance
Attachments 42G and 42H show the importance of the phase relation-
ship between FN and the formant chain. If the phase of FN is in-
verted (42H), a zero appears in the transfer function as AN is
increased from "00".
42I. Fricative Filter transfer function measurement
Attachment 42I is the transfer function of fricative filter with 3
kHz high-pass filter temporarily bypassed.
42J-K. TASS-II & TASS-II noise spectrum measurement
Attachments 42J and 42K show spectral measurements of the TASS-II
and TASS-III noise sources, each made through a 4-pole 10 kHz
maximally-flat filter.
43A-Z. TASS-III circuit diagram photocopies
Most of the TASS-III circuit diagrams were copied from 25-year old
faded blueprints. If a particular item is unreadable on one page,
it may be readable on another page.
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