03-13-2019, 03:27 AM
@DRONE7
I expect that's because the RIAA playback equalization strongly rolls back treble frequencies---by about -20dB at 20kHz compared to 1kHz---in order to reverse the effect of the RIAA recording equalization, resulting in a nominally flat response.
This is great for listening because it reduces high frequency hiss and clicks generated in the playback process. However, this makes it harder for the declicker program to detect the noise signature it's designed to look for. Hence, declick first, then equalize.
Or at least that's how it seems to me.
Regards,
Kent
Quote:Having the files recorded without riaa compensation I then run them through the declicker which seems to do a much better find and kill process than if the files were flat response.
I expect that's because the RIAA playback equalization strongly rolls back treble frequencies---by about -20dB at 20kHz compared to 1kHz---in order to reverse the effect of the RIAA recording equalization, resulting in a nominally flat response.
This is great for listening because it reduces high frequency hiss and clicks generated in the playback process. However, this makes it harder for the declicker program to detect the noise signature it's designed to look for. Hence, declick first, then equalize.
Or at least that's how it seems to me.
Regards,
Kent
