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10. If you feel that the output signal is not enough loud increase volume watching the left and
right level meters. If you realize that the most highest red LEDs shine the volume is already
too high; you have reached so called clipping level which may results in audible
distortions.
11. It is possible to smoothly increase (+) or decrease (-) the amount of high and/or low
frequencies in the final output signal according to your sound timbre preferences using
bass and treble sliders. It is possible that the raising of the bass or treble controls
increases output signal volume up to the clipping level. In such case you need to lower the
volume slider until clipping disappears (the most highest red LEDs does not shine
anymore).
12. Low-cost sound cards used for A-D/D-A conversion may themselves introduce severe
artefacts and noise to an audio signal. For professional applications, use high-quality
audio cards like the TerraTec EWX 24/96.
13. If you record and process your audio files using 48 kHz or even 96 kHz sampling
frequency, you have to be sure to use a high-quality conversion tool if going down to the
CD sampling rate frequency, 44.1 kHz.
14. For the best results, use your own ears in combination with the difference feature of
Playback Section. Switch between the original input signal and the input/output
difference, i.e., the part of the signal taken out by the descratching and denoising
algorithms. This difference signal normally should not contain any parts of the original
signal you want to preserve.
Important Remark:
The Sound Laundry™ TerraTec Edition is a very fast and very effective tool. You will be
amazed by how dramatically the audio quality of old records and problematic audio files can
be improved. But please do not expect miracles if you process material with long gaps or
jumps. The information theory says that once the information is lost and there is not enough
redundancy in the remaining material, the restoration process for the original material is
impossible. In such hopeless cases, experienced mastering engineers try to transfer similar
recording parts into gaps using very precise audio editors. The same is if you process material
containing so much noise that the original signal is no longer distinguishable. Also here the
information theory says that once the information is sunk in noise (very bad signal-to-noise
ratio) and there is not enough information about the properties of the original signal, or even
worse, the original signal is in addition non-linearly distorted, the denoising process can
deliver only limited-quality results.
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Algorithmix® Sound Laundry™ TerraTec Edition (English)
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