Rockbox mail archive
Subject: Re: High kbps/Low kbps power consumption
From: Chris Holt (amiga2k_at_cox.net)
On Fri, 06 Jun 2003 14:45:27 -0700, Brent Geery wrote:
>On Thu, 05 Jun 2003 17:37:12 -0400, Neon John <johngd_at_bellsouth.net>
>>I have very good ears and I can't hear the difference between the
>>original CD and 192kbps even on my mid-level home system playing
>>directly from the computer. I certainly can't hear the difference once
>>the sound goes through the Archos' audio output circuit and then
>>through headphones, even my PortaPros. It is a waste of space and
>>processing power to put anything above 128kbps on the Archos, unless
>>perhaps you're using the digital out to a high end system.
>If 128kb/s is transparent to you, your ears are far from "very good".
John said that 192 was transparent to him.
>>I store all my rips at 192kbps on my computer. I downsample to 128kbps
>>for the Archos using CDex and LAME. On this 2 gig machine the process
>>is quite rapid. Since I have the disc space I simply maintain two file
>>trees, one for the original rips and one for the archos.
>If 128kb/s transcoded again from 192kb/s is transparent to you, your
>ears are *really* far from "very good"!
I believe his reasoning is based on the less than audiophile quality
output amp in the Archos, and the typical listening environment. My ears
are "good" according to my last audiogram, and I can hear the difference
128/192 on the Archos with Portapros in a quiet room, but not in my
vehicle. 31in. All Terrain tires tend to kill a lot of the "detail". :)
Page was last modified "Jan 10 2012" The Rockbox Crew