QV400D Quadravox Inc, QV400D Datasheet - Page 44

• Manufacturer Part Number: QV400D
• Description: CHIPCORDER PROTOTYPE TOOL KIT
• Manufacturer: Quadravox Inc
• Series: ChipCorder®r
• Type: Quadravox Prototyping Kitr

Specifications of QV400D

• Contents: Programmer Board with two empty ZIF Sockets, Cable, Power Supply, Software and Documentation
• For Use With/related Products: Winbond ChipCorder® Devices
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

Chapter 5. Universal Speech Tools : ISD Programming
Parameters Dialog
1999
This dialog appears when the “Parameters” button is pressed in the SetUp dialog.
Control
Frequency
Recording
Level
Quadravox, Inc
Quadravox, Inc
.
:
:
This is the “carrier frequency” used to communicate with the QV400D on the
“control channel” of the stereo cable. From board ISDPRG04 onwards, this
number is fixed at 3500 or 4500Hz. The dialog reference is retained for use
with earlier PCBs.
The user can vary the recording level from 0 (mute) to 15. If this level is too
low, the quality of the ISD recordings will be noisy. If it is too high, the
recordings will be saturated.
System Name
Epsilon1 and Epsilon2 :
For now, one system only is available: iQbox.
The Quadravox QV400D product does not
drive
Consequently, it has to deal with the range of
sampling frequencies defined in the ISD
spec to compute starting addresses that
eliminate the risk of overlap between
utterances. Epsilon1 is the uncertainty factor
(in percent) on the sound card sampling
frequency. It can usually be safely set to 0.
Epsilon2 is the uncertainty factor (in percent)
on the ISD chip sampling frequency. A safe
value seems to be 2.
These factors are used in the computation of
addresses whenever a project is recorded to
an ISD chip using the QV400D hardware.
The
Quadravox do not need these epsilon
factors, since they drive the ISD chip clock.
Consequently, the table creation program will
temporarily set these two coefficients to 0
when
QV4xxP.
QV4xxP
the
computing
:
clock
gang
QV400D User’s Guide
a
of
table
programmers
the
address
ISD
44
chips.
from
for