Very low mic signal

[Guest]

Yesterday I was trying voice recognition. The tutorial seems to work fine but
then I have lots of trouble using it.

I've noticed that the signal bar is very low so I've tryied to set input
signal volume but is set to 100 already.

Anyone noticed low sound signals under Windows Vista? On XP with same sound
hardware and mic I don't have any problems.

 

[Robert Robinson]

It is my understanding from the Microsoft Speech Group that the current
beta contains changes that corrected problems with Vista's audio signal
handling. We have had the reverse experience to yours. With build 5308,
Vista Speech required a much higher audio input than that of other
vendor's speech applications. Currently, Vista Speech's audio level
requirements are similar to those of other programs and the audio sounds
clear.
There are, unfortunately, two problems. Vista Speech recognition
accuracy is now terrible compared with the performance under build 5308.
Adjusting the audio level does not correct this problem. The best way to
test it is to train some new words and check to see if the program then
properly recognizes these words.
A second, and relatively minor issue, is that the three Vista Speech VU
displays show markedly different levels.
We are using a Creative X-Fi sound card with a driver that was last
updated in 11/2005. It is possible that all of us are having problems
that are related to changes in Vista that impact the sound card driver
functions.
Also, I would check to see if the 20db boast is set properly for your
application.
Robbie

 

[Angel Massa]

I've checked on the audio settions for the boost option but it's not there.
I thinks this option is driver dependent as I remember to see this on my
previous SB Live! card. Now I have a C-media on board sound on my ASUS P5GD2
Deluxe motherboard.

Until I find a solution for the low mic input signal I can't try voice
recognition. :-(

Regards,
Angel.