WAD62;611268 Wrote: 
> Firstly apologies if this has been done elsewhere, please point me in
> the correct direction if it has.
> 
> I'm running 3 SBs (1 SB3, and 2 Receivers), along with a PC/Winamp
> combo against the same FLAC library (QNAP TS-119/SqueezeCenter 7.3.3).
> 
> I've been messing around with Winamp, in particular FFSoX, and ASIO,
> which has spawned a few questions about the possible effects of some SB
> functionality.
> 
> Volume; I set my SB receivers to 100% volume based on the supplied
> documentation, is this better quality because I'm avoiding the DSP, or
> as I vaguely recall reading something about the data being padded out
> to 24 bits prior to playing? As I said I use the volume on my amps so
> this isn't an issue for me.
> 
> ReplayGain; I use 'Album' gain with my players, as I stated earlier
> I've been messing around with FFSoX as an input plugin for Winamp. One
> of it's claims is that it improves sound quality by applying ReplayGain
> to the input stream rather than at playback, thus avoiding the DSP at
> playback. Has anyone done any research into the effects of using
> Album/Audiophile ReplayGain on playback quality, and could the SoX
> claim be valid, or too trivial to notice...I do like and use the
> ReplyGain functionality.
> 
> Crossfade; Again if I'm playing back a random collection, crossfade is
> a nice option, however for me not as important as ReplayGain. I'd
> imagine that crossfade must invoke some DSP processing or other. Again
> has anyone checked out it's effects on sound quality? I've just started
> using Winamp/ASIO as the route to my M-Audio soundcard on my PC, and
> noticed that crossfade is no longer functional (it requires direct
> sound for that), but the quality is improved, marginally...this is
> probably due to the direct link to my soundcard but it did make me
> wonder.
> 
> Sorry for the rambling head dump, anyone with experience in these
> areas?

There is no "DSP" going on in any of the examples - at least not in the
sense you mean. The volume-based functions are all extremely
lightweight.

RG for example simply adds/subtracts a fixed value from each sample.
Likewise the volume control. Crossfade subtracts a slowly increasing
amount.

Although these are technically "DSP" functions they aren't the sort of
thing you typically use SOX for.


-- 
Phil Leigh

You want to see the signal path BEFORE it gets onto a CD/vinyl...it
ain't what you'd call minimal...
Touch(wired/XP) - Audiolense 3.3/2.0+INGUZ DRC - MF
x-dacv3/x-10/x-psu(Audiocom full mods) - Linn 5103 - full Aktiv 5.1
system (6x LK140's, ESPEK/TRIKAN/KATAN/SEIZMIK 10.5), Pekin Tuner,
Townsend Supertweeters, Blue Jeans Belden Digital,Kimber 8TC Speaker &
Chord Signature Plus Interconnect cables
Stax4070+SRM7/II phones
Kitchen Boom, Outdoors: SB Radio, Harmony One remote for everything.
------------------------------------------------------------------------
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