File:Dither demo.ogg

From Wikimedia Commons, the free media repository
Jump to navigation Jump to search

Dither_demo.ogg ‎(Ogg Vorbis sound file, length 14 s, 52 kbps, file size: 91 KB)

Captions

Captions

Add a one-line explanation of what this file represents

Summary

[edit]
Description
English: dither_demo.ogg (mono 48000Hz 16 bit ogg vorbis)

3 java program generated pings. Frequency : 2477 Hz (a prime number) Amplitude : 0dB FS to 0, exponential; -60 dB FS after de 3 s.

  • Ping #1 16 bits code.
  • Ping #2 requantized to 4 bits (16 levels) no dither
  • Ping #3 ping #1 requantized to 4 bits (16 levels) TPDF dither
Français : Le fichier dither_demo.ogg (mono 48000Hz 16 bit ogg vorbis)

fait entendre 3 pings générés par un programme java. Fréquence : 2477 Hz (un nombre premier) Amplitude : de 0dB FS (pleine échelle) à 0, décroissance exponentielle; -60 dB FS (1/1000) au bout de 3 s.

  • Ping #1 codé normalement sur 16 bits.
  • Ping #2 requantifié sur 4 bits sans inquiéter le signal (no dither)
  • Ping #3 ping #1 requantifié sur 4 bits avec inquiétude TPDF
Date
Source Own work
Author PolBr

Licensing

[edit]
I, the copyright holder of this work, hereby publish it under the following license:
w:en:Creative Commons
attribution share alike
This file is licensed under the Creative Commons Attribution-Share Alike 3.0 Unported license.
You are free:
  • to share – to copy, distribute and transmit the work
  • to remix – to adapt the work
Under the following conditions:
  • attribution – You must give appropriate credit, provide a link to the license, and indicate if changes were made. You may do so in any reasonable manner, but not in any way that suggests the licensor endorses you or your use.
  • share alike – If you remix, transform, or build upon the material, you must distribute your contributions under the same or compatible license as the original.

File history

Click on a date/time to view the file as it appeared at that time.

Date/TimeThumbnailDimensionsUserComment
current10:43, 6 May 201214 s (91 KB)PolBr (talk | contribs)corrected error which caused DC offset in ping 3 (requantized with dither)
10:38, 6 May 201214 s (91 KB)PolBr (talk | contribs)Reverted to version as of 21:08, 3 May 2012 wrong encoding
10:37, 6 May 201214 s (1.32 MB)PolBr (talk | contribs)corrected error which caused DC offset in dithered ping
21:08, 3 May 201214 s (91 KB)PolBr (talk | contribs)

You cannot overwrite this file.

There are no pages that use this file.

Transcode status

Update transcode status
Format Bitrate Download Status Encode time
MP3 80 kbps Completed 16:46, 7 December 2017 1.0 s

File usage on other wikis

The following other wikis use this file:

Metadata

This file contains additional information such as Exif metadata which may have been added by the digital camera, scanner, or software program used to create or digitize it. If the file has been modified from its original state, some details such as the timestamp may not fully reflect those of the original file. The timestamp is only as accurate as the clock in the camera, and it may be completely wrong.

Retrieved from "https://commons.wikimedia.org/w/index.php?title=File:Dither_demo.ogg&oldid=465301598"