Re: [LAU] 48k vs. 44.1k

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To: <len@...>
Cc: linux audio users <linux-audio-user@...>
Date: Monday, January 7, 2013 - 1:56 am

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>

Mainly, clocking issues. If for some reason an application thinks it is
running in 44.1 but the system is at 48, there will be playback issues like
pops and the likes.. I know I ran into this working with Reaper using Wine.

Perhaps not much of a 21st century issue, but if you are making projects
that you intend to put onto CD, you will have to downsample to 44.1hz at
16-bit, as this is the Red Book specification for CD quality audio. A
trivial task, but still time consuming and an extra step to think about.

Speaking as one of the devs for the Ubuntu Studio distro, I'm wondering

It really depends on what the target audience for the audio software. In
the pro audio-music world, 44.1khz is still more widely used because it has
been a standard for years in digital audio for CD, and I honestly don't see
it changing to 48khz anytime soon (96/24 would be the next "level" you
would typically find.) A 48khz sample rate is used (almost exclusively) in
the film industry for synching audio to visual media rather than pure
audio. Games, movie, and television audio are in a 48khz format at minimal.

>From a recording standpoint, it would be much more beneficial to change the
bitrate at 24 bits instead of the default 16, as you get more dynamic range
and headroom in the recording process.

On Sat, Jan 5, 2013 at 10:38 PM, Len Ovens wrote:

> From earlier talk about sample rates, it appears that for recording audio,

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Having decided that, what other issues cross mypath if=
I default my audio rate to 48k?=A0
Mainly, clocking issues. If for some reason an applicat=
ion thinks it is running in 44.1 but the system is at 48, there will be pla=
yback issues like pops and the likes.. I know I ran into this working with =
Reaper using Wine.=A0
Perhaps not much of a 21st century issue, but if you ar=
e making projects that you intend to put onto CD, you will have to downsamp=
le to 44.1hz at 16-bit, as this is the Red Book specification for CD qualit=
y audio. A trivial task, but still time consuming and an extra step to thin=
k about.=A0
Spea=
king as one of the devs for the Ubuntu Studio distro, I'm wondering
how much trouble I'm going to ge=
t for asking for 48k default sample rate
in audio.It really depends on what the target audience for the audio so=
ftware. In the pro audio-music world, 44.1khz is still more widely used bec=
ause it has been a standard for years in digital audio for CD, and I honest=
ly don't see it changing to 48khz anytime soon (96/24 would be the next=
"level" you would typically find.) A 48khz sample rate is used (=
almost exclusively) in the film industry for synching audio to visual media=
rather than pure audio. Games, movie, and television audio are in a 48khz =
format at minimal.=A0
From a recording standpoint, it would be much more bene=
ficial to change the bitrate at 24 bits instead of the default 16, as you g=
et more dynamic range and headroom in the recording process.
On Sat, Jan 5, 2013 at 10:38 PM, Len Ovens <len@ovenwerks.net> wrote:

br>
48k is better than 44.1. Having decided that, what other issues cross my
path if I default my audio rate to 48k? All of my softsynths seem to
work... I do wonder about samplers though. Are the samples mostly in 44.1k<=
br>
if they come on a CD? Would that make them off-key when used? Would they
get rate-changed on the fly? Would that use more CPU? (questions,
questions, questions)

It does not seem to affect my desktop, flash, ogg, mp3, ac3 etc. all
playback fine. Pulse seems to be doing more work though at least when
playing a CD. I'm pushing it pretty hard though, I have it bridged to
jackdbus with -p64 so Pulse has to keep up.

I'm just wondering why Ubuntu (which presumably means Debian too),
qjackctl, Pulse and lots of other audio apps all seem to default to 44.1k.<=
br>

Speaking as one of the devs for the Ubuntu Studio distro, I'm wondering=

how much trouble I'm going to get for asking for 48k default sample rat=
e
in audio.

--
Len Ovens
www.OvenWerks.net

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Messages in current thread:
[LAU] 48k vs. 44.1k, Len Ovens, (Sun Jan 6, 11:54 am)
Re: [LAU] 48k vs. 44.1k, Ralph Bluecoat, (Mon Jan 7, 1:56 am)
Re: [LAU] 48k vs. 44.1k, Len Ovens, (Mon Jan 7, 4:37 am)
Re: [LAU] 48k vs. 44.1k, Fons Adriaensen, (Mon Jan 7, 10:03 pm)
Re: [LAU] 48k vs. 44.1k, Alf Haakon Lund, (Mon Jan 7, 5:01 pm)
Re: [LAU] 48k vs. 44.1k, Len Ovens, (Mon Jan 7, 9:34 pm)
Re: [LAU] 48k vs. 44.1k, David Olofson, (Sun Jan 6, 11:17 pm)
Re: [LAU] 48k vs. 44.1k, Len Ovens, (Mon Jan 7, 3:16 am)
Re: [LAU] 48k vs. 44.1k, Neil, (Sun Jan 6, 8:18 pm)