[Please Help] 24bit to 16bit truncation dithering and noise shaping soundstage test

Author
parco
Max Output Level: -89 dBFS
  • Total Posts : 92
  • Joined: 2013/06/01 05:49:24
  • Location: Hong Kong
  • Status: offline
2013/08/24 05:02:20 (permalink)

[Please Help] 24bit to 16bit truncation dithering and noise shaping soundstage test

There are 11 wav lossless files for the test this time, contained one 24bit master file and 10 down sampled + dithered 16bit wav files. Guaranteed there are absolutely no any other additional processes to those 10 16bit files except ditherings, noise shapings and truncations. And the music inside is a public open free copyright orchestra music.
 
 
Ditherings, noise shapings and softwares in-used for this test are: Cakewalk Sonar x2a: Rectangular, Triangular, POW-R 1, POW-R 2, POW-R 3 Sony Soundforge 11: Izotope MBit+ (normal, high, ultra), Waves IDR (normal, ultra)
 
 
All the wav files can be downloaded from this folder:
https://skydrive.live.com/redir?resid=938DD3AA274D60D7!475&authkey=!AGx-nZTzkFzcFr8
If it is too trouble or inconvenient for you to download all of them one by one individually, you may download a zip file here that contained all 11 wav files inside:
https://docs.google.com/file/d/0B9lH7xOnWXVhR2Nrc00zRk9wVmM/edit?usp=sharing


 
This test want you all to help finding and answering these following 5 questions after you've listened and examined them all:
 
1. Which 16bit file(s) of them have/has the most nearest sound quality and fidelity details to the original 24bit master? 2. Are the soundstage stereo widths of all the 16bit files changed comparing to the original 24bit master, whatever how much or how less difference? 3. Are the soundstage near-far depths of all the 16bit files changed comparing to the original 24bit master, whatever how much or how less difference? 4. Which 16bit file(s) of them have/has the most nearest soundstage stereo width(s) to the original 24bit master, or even exactly the same width(s)? 5. Which 16bit file(s) of them have/has the sound(s) or color(s) you love the most in personal?
 
 
The answers of question 1, 4 and 5 can be only one 16bit file or multiple files ranked exactly.
 
 
Thank you all for your precious opinion.
 
Regarded!

#1

2 Replies Related Threads

    bitflipper
    01100010 01101001 01110100 01100110 01101100 01101
    • Total Posts : 26036
    • Joined: 2006/09/17 11:23:23
    • Location: Everett, WA USA
    • Status: offline
    Re: [Please Help] 24bit to 16bit truncation dithering and noise shaping soundstage test 2013/08/25 21:47:58 (permalink)
    Sorry you couldn't get anybody to take you up on this, parco. But I'll tell you why that is. First of all, we're all lazy buggars who can't be bothered. Secondly, the dither question has been answered long ago: it really doesn't matter which algorithm you choose. The differences are so trivial you might as well worry about the effect of humidity on the speed of sound for latency calculations. It won't affect the soundstage to any perceptible degree.


    All else is in doubt, so this is the truth I cling to. 

    My Stuff
    #2
    Cactus Music
    Max Output Level: 0 dBFS
    • Total Posts : 8424
    • Joined: 2004/02/09 21:34:04
    • Status: offline
    Re: [Please Help] 24bit to 16bit truncation dithering and noise shaping soundstage test 2013/08/25 22:53:14 (permalink)
    I'm still working on keeping my guitar in tune...If I started thinking about how this stuff works I think my brain would implode. 

    Johnny V  
    Cakelab  
    Focusrite 6i61st - Tascam us1641. 
    3 Desktops and 3 Laptops W7 and W10
     http://www.cactusmusic.ca/
     
     
    #3
    Jump to:
    © 2025 APG vNext Commercial Version 5.1