Har den senaste tiden roat mig med att göra enkla ljudupptagningar av levande musik med en Zoom H1n. Ibland kan resultatet bli riktigt bra och hävda sig väl mot köpeinspelningar.
T ex i går gjorde jag en upptagning på Cello i ett ganska hårt rum och med kort avstånd till instrumentet.
Fundering: Om man vill ha med applåderna i inspelningen så måste nivån på dessa tas ner.
Använder Audacity för redigeringen. Dess Limiter har fyra varianter. Är det Soft Clipping som är bäst att använda för detta ändamål?
Soft Limit (default) progressively reduces the gain as the amplitude of the waveform approaches the "Limit to (dB)" threshold and prevents the waveform from exceeding that level.
Hard Limit makes no change to the audio until the peaks reach the "Limit to (dB)" threshold. Where the input level (after applying optional input gain) exceeds the threshold, an equal amount of negative gain is applied so that the peaks never exceed the threshold.
Hard Clipping is the simplest method for reducing peaks. It just chops off the peaks at the "Limit to" threshold. Note that clipping causes distortion. Hard clipping may be useful for purposefully introducing distortion on high peaks, for example to add high harmonics to percussive sounds. Excessive use of hard clipping creates a harsh distortion that is usually unpleasant. For heavier use of distortion the "Soft Clipping" option may be preferable. Hard clipping may also be useful for producing synthetic signals for scientific purposes.
Soft Clipping works in much the same way as "Hard Clipping", but is less fierce in that it "squashes" the peaks rather than cutting them off flat. Soft clipping starts to reduce the peaks a little below the threshold level and progressively increases its effect as the input level increases such that the threshold is never exceeded. When applied heavily, the effect is similar to a "Fuzz Box" effect.