Re: 60 Hz hum causing problems with speech recognition

[Laszlo Toth <tothl@xxxxxxxxxxxxxxx>]

On Tue, 16 Jun 2009, Tarun Pruthi wrote:

> 2. Is there a standard way to get rid of the 60 Hz hum and ensure clean
> recordings for the purposes of speech recognition?

You didn't mention what sort of speech recognizer you are using, but the
spectral analysis step of such systems usually ignore _everything_ below
100-150 Hz. (Some harmonics may still remain then, of course).

               Laszlo Toth
        Hungarian Academy of Sciences         *
  Research Group on Artificial Intelligence   *   "Failure only begins
     e-mail: tothl@xxxxxxxxxxxxxxx            *    when you stop trying"
     http://www.inf.u-szeged.hu/~tothl        *