Home Forums Breakaway Professional Products – [discontinued] Processing for AM and NRSC Preemphasis

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  • #316
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    Hi , I’m trying this fantastic audio processor for a little AM radio station.

    I want to know witch preset is the best for this kind of media and if the NRSC preempasis will be available in the future.

    I have found the "new york" the most effective for AM broadcasting, becaude of his crisp hi end ( helpful in band limited media) and because of his density ,
    But the Bass and the midbass range can be optimized i think.

    Adiano.

    #7149
    Leif
    Keymaster

    Hi Adriano!

    It’s not so much a matter of preset, as a matter of what settings. NRSC is 75us pre-emphasis with high frequency roll-off. If you select 75us pre-emph, you can use the Transition Width and Transition Slope to adjust the high frequency filter shape.

    Pre-emphasis on AM is not as rigid as on FM — every receiver is different, and many have low pass filters with the cutoff so low that pre-emphasis barely makes a difference anyway. So, it’s just a matter of adjusting for taste.

    You can tweak the low-end by using the Bass slider! If you turn Bass Shape up, it will also affect the lower midrange.

    Best regards,
    //Leif

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