IPB

Welcome Guest ( Log In | Register )

IMA ADPCM encoding
Megaman
post Oct 21 2005, 04:52
Post #1





Group: Members
Posts: 148
Joined: 27-October 02
From: Buenos Aires
Member No.: 3626



Hi, I recently acquired a cheap chinese MP3 Player with voice recording/encoding capability.

The max voice quality you can get from this is "IMA ADPCM 16bit 32kbps mono".

I downloaded some voice encodings from the player and opened them with Adobe Audition, edited useless parts and saved as the same format.

There is supposedly a re-encoding process going on, but I can´t notice any quality degradation. I really don´t want to save to plain PCM because, correct me if I´m wrong, the files would be 4 times bigger (I already tried with approximately 4x size increase).

What would you do to preserve as much quality as possible without increasing the size (I mean keeping it around the same bitrate)?

Thanks.

Edit: it was actually 32kbps

This post has been edited by Megaman: Oct 23 2005, 01:40


--------------------
No se porqué
imaginé
que estabamos unidos
y me sentí mejor
pero aquí estoy
tan solo en la vida
que mejor me voy
Go to the top of the page
+Quote Post
 
Start new topic
Replies
frank10
post Oct 31 2005, 12:44
Post #2





Group: Members
Posts: 5
Joined: 21-January 05
Member No.: 19200



I'm, making something similar to Megaman, but I can reach also 128kbps.

I don't have Audition. So I'm searching a free program that can cut IMA files without recompress them, like that excellent prog I use for cutting mp3: Mp3DirectCut.

Also I'm not sure I understand why you don't loose quality on recompress IMA while you will have if you recompress mp3 or other lossy codecs.
Go to the top of the page
+Quote Post

Posts in this topic


Reply to this topicStart new topic
1 User(s) are reading this topic (1 Guests and 0 Anonymous Users)
0 Members:

 



RSS Lo-Fi Version Time is now: 18th September 2014 - 22:57