LASTAR

Logiciel Automatisé Simple de Traitement Audio Rapide

Pour une description en Français, visiter cette page.

LASTAR is a batch (non-interactive) audio processor for loudness adjustment and file splitting of a batch of audio recordings, using audio transparent maximizer.

At the opposite of usual available softwares, loudness normalization is done on signal power, which leads to a louder and more homogeneous result than a usual "peak" normalization, in particular on live recordings.

Its purposes are :

• to split and normalize digitized analog tapes or vinyls,

• to split and normalize live recordings from microphones (ex ZOOM H2 recordings),

• fast and homogeneous normalization of a group of files (compilation for instance),

• loudness and dynamic reduction for listening in a noisy environment (car...)

• and so on...

This software aims to be very fast and easy to use : the most efficient computing techniques have been implemented, and there are very few parameters to set (most of them are automatically adjusted by analyzing the file).

For interactive audio edition, please use instead an audio editor like Audacity.

DOWNLOAD LASTAR

Technical features

• This software is a freeware available under gpl licence.

• Available on Windows XP 32 bits and above, should be easily portable to Linux

• wav or mp3 input,

• wav or mp3 output

• support of id3 tags V1 & V2

• Design to process large files (several Go)

• Automatic file analysis to set up the best parameters

• RMS Amplifier with fast lookahead limiter to prevent clipping

• Left/right channel automated balancing

• 3 bands semi-parametric equalizer

• real time pre-listening function

• Transparent and fast 3 bands processing (using FIR implemented by multi-threaded FFT convolution)

• Automated amplifier gain adjustment and noise estimation for file splitting

• Smooth automatic gain control (AGC) to compress dynamic without "pumping" effect

• Output noise gate

• English or French GUI

• Comes with a simple user guide