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Re: SNR estimation from noisy data
I assume you are referring to a speech signal in a somewhat
more stationary background noise? In this case, the
general idea is to estimate the noise level from the long term average level of
the speech + noise mixture. Then short term fluctuations from this average are
the signal component. Thus you can estimate the SNR.
For a good algorithm, I would start with this
are also lots of noise estimators you might find in the hearing aid
The difficulty occurs when
the signal and noise become similar, such as a competing voice. In fact,
consider the unfortunate cocktail party situation where a single competing
talker ("background noise") might be saying something more interesting than
the actual target speaker, and so the SNR spontaneously inverts. There is little
chance of estimating SNR in this situation.
Could anyone point me to the best algorithms available to estimate SNR from
Senior Research Engineer
Think A Move, Ltd.