Ignore background noise?

Question

I am making a voice recognition software for my computer but I have some problems: 1) Is there a way to ignore background noise? I want the program to end when there is x amount of time without noise but background noise could keep it awake indefinitely. 2) same thing but reverse, I want it to start when it hears a voice but loud enough background noise will start it as well.

For your 2nd problem I searched "pyaudio threshold" and found this: http://stackoverflow.com/questions/2668442/detect-and-record-a-sound-with-python — chrki, Dec 23 '14 at 22:29

score 0 · Accepted Answer · answered Dec 23 '14 at 22:39

0

Sorry, I can't provide any code, only pseudocode. You can create en enum, or a list, of possible phonemes spoken. Activate the program only when the ADSR pattern of the phoneme is recognized, with volume as a secondary indicator, to separate "background" phonemes. If the background noise is so loud that it interferes with the recognition of the phoneme, then it shouldn't be considered a background sound in the first place.

Aah = 1
Ahh = 2
Ehh = 3 
...
if soundEvent == true:

    if phoneme.type = Aah:
    what_i_said = "a"
...

answered Dec 23 '14 at 22:39

Orange Mushroom

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You don't need to write down what they said, but as long as a phoneme is spoken, you know someone is talking. – Orange Mushroom Dec 23 '14 at 22:43
Who ever voted this down had better have a better answer for me – Queue21 Dec 26 '14 at 00:03
I know, probably rogue or accidental voting, did you vote up to neutralize it? – Orange Mushroom Dec 26 '14 at 00:05

Ignore background noise?

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