Voice Recognition Whilst Playing Music?

konnichiwa · 09-19-2005, 04:55 AM

Okay, first post here, been a lurker for a bit, but decided to come out of the wood work to post an idea.

Voice recognition whilst playing music is a hard one, as the computer will listen to all the sound it can hear, music + your voice, i have an idea that may help this, but i'm not sure, as i've not done alot of work with speech recognition!

Basically, your computer is controlling your speakers, so it knows what sound should be in the car at any one point. Now, it constantantly listens to this, and compares the sound it hears, to the sound that its playing, and takes away the sound its playing from the sound it hears, therefore your are left with the sound that should not be in the car. This you perform the speech recognition on.

Is this possible?

Appologies if i just wasted 2 mins of your time!!

edit: another quick question.

Is there a GPS software with an SDK so i can ask it if i'm within 100m of a petrol station, if so, dont shutdown on next engine off?

ElKeeed · 09-19-2005, 06:27 AM

If you try the noise cancelling mic from logitech you will find that practically no music/engine noise comes through even with it up quite loud on the motorway.

Getting it to recognise your voice properly is another problem :P

evandude · 09-19-2005, 07:02 AM

Quote: Originally Posted by konnichiwa

Basically, your computer is controlling your speakers, so it knows what sound should be in the car at any one point. Now, it constantantly listens to this, and compares the sound it hears, to the sound that its playing, and takes away the sound its playing from the sound it hears, therefore your are left with the sound that should not be in the car. This you perform the speech recognition on.

this has been discussed before... it seems like a great plan, but the problem is that "taking away the sound it's playing from the sound it hears" is way more difficult than it sounds, and even if you managed to write a program to do this signal processing, it would probably take more processing power than you could spare in a carPC; that is, if you could do it at all.

you're better off experimenting with the "noise-cancelling" microphones, which have vents behind the mic element so that background noise (which would be present both behind and in front of the mic) doesn't get picked up as much as your voice, which would only be present in front of the mic.

konnichiwa · 09-19-2005, 09:23 AM

very clever

thank you for the info.

IntellaWorks · 09-19-2005, 10:45 AM

Or since the computer is controlling the audio. Just mute the audio for a second while the command is being said. Onstar uses this technique. Which seems to get rid of irraneaus commands.

Have 1 trigger command that when heard mutes the playing audio and listens for its real directive. for example (you say "Computer", the computer ::mutes system:: , you say "play Cemetary Gates by Pantera", computer ::ack or nacks::

This coupled with a noise canceling mic is your best chance at a successful voice reco. system.

gizak · 09-20-2005, 12:05 AM

imo, somebody needs to invent a bluetooth throat mic. Versatile, can be used anywhere with multiple PC's (as long as they have bt dongle). Only hears YOU. You can use it for voice recognition, or you can use to to kick your friend's arse in Halo and be able to tell them how much they suck whilst you have your 5.1 surround system blasting away and he's stuck using his lil headset.

Mad Ad · 09-20-2005, 06:03 PM

Heres a thread explaining it a bit better

http://www.mp3car.com/vbulletin/showthread.php?t=55817

xs10x · 09-30-2005, 01:54 PM

I Would recommend that a external button. preferably on the wheel that can be pressed to mute all music or video.

:button:....Computer...:ring sound:......GPS......:ring sound: