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# Background Noise

Background noise, including music, can significantly impact speech processing.

The SNR (signal-to-noise ratio) measures how much background noise is present in audio data. Typically, recordings with noticeable background noise can have an SNR as low as 10-15 dB. Good-quality recordings have an SNR above 25 dB.

HPE IDOL Speech Server provides an audio preprocessing module to measure various audio quality related metrics, including SNR. For more information, see Preprocess Audio.

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