This question is primarily aimed @Bernt. First please watch this video
"Intersample clipping is the biggest problem with PCM systems." - John SiauOversampled sigma-delta D/A converters and fixed-point sample rate converters can ...
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So my question is; does AL suffer from this problem ?
OR, does it depend on the convolver being used to deploy the AL generated filters?
Hi lansr,
I’m well aware of the phenomenon.
Audiolense isn’t a key player here. It’s got more to do with the dac. And hot mixed recordings.
Intersample clipping is foremost a high frequency issue, there can be a substantial rise in the signal between two samples around e.g 20 kHz. Anything that flirs away between the samples is a high frequency issue….
Most Audiolense corrections tend to add energy in the Schroeder region and perhaps somewhere in the bass too, typical 6 -10 dB. Because that’s where most speakers lack energy. But this is achieved by attenuating everything else, including the top end.
So typically, the overall attenuation in the correction wil give headroom against intersample clipping at high frequencies, simce the hig frequencies are attenuated accordingly..
You can monitor sample clipping if you use the Audiolense convolver, and you can probably go to plus 3 dB or higher before it becomes audible. On hot recordings I tend to hear clipping somewhere between +3 and +6 dB, but this number is highly dependent on the music you listen to and how the correction attenuates various frequency regions.
Nevertheless I think it is worthwhile to play a bit with the convolver here, to experience when clipping starts … and when you start to hear distortion.
