birding-aus

RFI Sound player/recording.

To:
Subject: RFI Sound player/recording.
From: (Russell Woodford)
Date: Thu, 10 Oct 2002 15:14:30 +1000
Hi all

I'm not going to attempt to do a sound / recording summary, but the following 
info might be useful - when I get a chance I'll find some URLs about the topic.

File Format              Size per minute        Comments
                 
CD digital audio     10Mb                        one of the formats for storing 
music
                                                                     on a CD - 
high quailty, big files

MP3                           1Mb                           Compressed format, 
loses data        
(mpeg layer 3)                                            CD-like quality for 
music, but higher freqs 
                                                                       
compromised

RA (Real Audio)       140Kb                       Compressed format, loses a 
lot of data, so
                                                                        sounds 
more like FM radio in quality

WAV                           10Mb                          Standard Windows 
sound format
                                                                         High 
quality & file size

AIFF                             10Mb                      Standard industry 
format - high quality &
                                                                      large 
files - originally for Macs but now others

ACC                            700Kb                    New compression format 
- better compression
(Advanced Audio Compression)            than MP3 but similar audio quality

MIDI                           5Kb-500Kb             File format for electronic 
instruments and
                                                                      
sequencers, etc - irrelevant for recorded sound
                                                                      although 
some software convert to/from MIDI

          

I would think that only WAV AIFF and CD-DA are suitable for recording birdsong.

There's a freeware utility for Macs called SoundApp which converts to & from a 
wide variety of sound files formats.  A far better and more expensive option is 
Sound Edit 2, now sold by Macromedia (Dreamweaver, Director, Flash, etc) which 
allows you to edit various parameters of sound files.



---
Russell Woodford
Music & Info Systems
Sacred Heart College Geelong

http://web.shc.melb.catholic.edu.au/music/auralonline.html
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