This Win95/98/NT/2000/XP/Vista/Win7/Win8 32-bit Windows application can be used to decode or scale Scala bitstreams and evaluate the coding efficiency of Scala's scalable technology. The software includes a bit error simulator in order to evaluate error resilience when decoding corrupt bitstreams.
Both single-channel and stereo bitstreams are now supported across a range of sample rates. Details regarding program operation are contained in the help.txt file included within the .zip archive.
download winsac 1.2 (winsac.zip, 165 kb, updated 2 November 2005)
The following sound files demonstrate the coding quality of Scala's error-resilient scalable audio codec, relative to two fixed-bitrate and two scalable reference codecs:
MPEG-1 Layer 3 (MP3) - FhG mp3 codec - fixed bitrate
MPEG-4 AAC Low Complexity Profile (AAC) - Apple Quicktime Pro 6.5 - fixed bitrate
MPEG-4 Bit Sliced Arithmetic Coding (BSAC) - scalable
Microsoft Embedded Audio Coder (EAC) - scalable
All files are approximately 6 seconds in length with 44.1 kHz sample rate. Samples are presented both as compressed bitstreams and uncompressed (decoded) .wav files.
Note that the Scala .sab bitstreams can be scaled or decoded at bitrates lower than the nominal encoded bitstream rates using the demonstration decoder software.
Contact Scala to request .sab bitstreams for alternative source material.
|Scalable bitstreams ?||no||no||yes||yes||yes|
|Scalable bitstreams ?||no||no||yes|