Further Help - Vlsi VS1000+1003 User Manual

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Further Help

9
The VoIP Speaker Phone is a demonstration unit.
VLSI Solution Oy recognizes the needs to tune at least the following parameters for
actual, mass-produced units.
VoIP mode:
Software microphone sensitivity.
Sound pressure level (the default level has been set to be pleasant with the cur-
rent demonstration board and speaker combination at -9 dB of maximum sound
pressure).
Optional equalization to optimise speaker frequency response.
There are also other features that are to be added to the production version of the
software.
VLSI Solution is willing to help to tune these parameters for customers who intend to
start mass production of VS1000+1003 VoIP Speaker Phones.
NOTE! If you have excessive amount of acoustic echo, i.e. so much signal comes from
your speakers to the microphone that echo cancellation doesn't work properly, first read
the document VoIP Acoustic Design (VoipAcoustic.pdf), which is provided in the same
directory as this document!
Rev. 2.20
VS1000+1003 VoIP Speaker Phone
2009-12-07
VSMPG
9. FURTHER HELP
Page 29(30)