LASTAR : a batch audio processor for loudness adjustment and file splitting
LASTAR
Logiciel Automatisé Simple de Traitement Audio Rapide
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 :
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to split, equalize and normalize digitized analog tapes or vinyls,
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to split, equalize and normalize live recordings from microphones (ex ZOOM H2 recordings),
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fast and homogeneous normalization of a group of files (compilation for instance),
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loudness and dynamic reduction for listening in a noisy environment (car...)
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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).
It embeds :
- an automatic RMS normalizer,
- an Automatic Gain Controller (compressor)
- a 10 bands automatic equalizer
- a 3 bands semi-parametric equalizer
- a file splitter
- a noise gate
- preset management
- a preview function.
For interactive audio edition, please use instead an audio editor like Audacity.
DOWNLOAD LASTAR
If you need some help or request new feature, please use this forum.
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) and full directory trees
- Automatic file analysis to set up the best parameters
- RMS Amplifier with fast lookahead limiter to prevent clipping
- Left/right channel automated balancing
- 10 bands automatic equalizer
- 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
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