24/48 v 24/96
in [DSP]
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From: Dirk Bruere at NeoPax on 29 Jul 2010 09:50 If we have a 24 bit input signal at 48kHz is there any benefit to be had processing it at 24/96?
From: Rune Allnor on 29 Jul 2010 09:55 On 29 Jul, 15:50, Dirk Bruere at NeoPax <dirk.bru...(a)gmail.com> wrote: > If we have a 24 bit input signal at 48kHz is there any benefit to be > had processing it at 24/96? The data sampling parameters at the ADC decide what can be done with the data. There are no benefits to cranking up the processing speed unless you already have a processing chain specifically tuned to deal with 24bit / 96 kHz data. Rune
From: Dirk Bruere at NeoPax on 29 Jul 2010 09:57 On 29 July, 14:55, Rune Allnor <all...(a)tele.ntnu.no> wrote: > On 29 Jul, 15:50, Dirk Bruere at NeoPax <dirk.bru...(a)gmail.com> wrote: > > > If we have a 24 bit input signal at 48kHz is there any benefit to be > > had processing it at 24/96? > > The data sampling parameters at the ADC decide what can be done > with the data. There are no benefits to cranking up the processing > speed unless you already have a processing chain specifically > tuned to deal with 24bit / 96 kHz data. > > Rune So interpolating to 96kHz will not preserve any extra information during subsequent arithmetic?
From: Greg Berchin on 29 Jul 2010 09:57 On Thu, 29 Jul 2010 06:50:06 -0700 (PDT), Dirk Bruere at NeoPax <dirk.bruere(a)gmail.com> wrote: >If we have a 24 bit input signal at 48kHz is there any benefit to be >had processing it at 24/96? Possibly. Does your processing include anything that can be considered modulation, such as dynamic range compression? If so, then it generates modulation products that can alias to audible frequencies if the sampling rate is too low. Greg
From: Rune Allnor on 29 Jul 2010 10:26
On 29 Jul, 15:57, Dirk Bruere at NeoPax <dirk.bru...(a)gmail.com> wrote: > On 29 July, 14:55, Rune Allnor <all...(a)tele.ntnu.no> wrote: > > > On 29 Jul, 15:50, Dirk Bruere at NeoPax <dirk.bru...(a)gmail.com> wrote: > > > > If we have a 24 bit input signal at 48kHz is there any benefit to be > > > had processing it at 24/96? > > > The data sampling parameters at the ADC decide what can be done > > with the data. There are no benefits to cranking up the processing > > speed unless you already have a processing chain specifically > > tuned to deal with 24bit / 96 kHz data. > > > Rune > > So interpolating to 96kHz will not preserve any extra information > during subsequent arithmetic? If done right, interpolation would *preserve* what is already there. You would not *gain* anything, though. Rune |