Butterworth: An analog Butterworth filter provides a 'maximally flat' passband (ie.

Note that moving either slider may change the horizontal position of the 0 dB line.

Vertical scale sliders: By default the vertical scale reads from 0 dB to -10 dB, but these two sliders to left of the scale let you adjust the upper and lower dB values so as to change the visible range on the graph.

Dragging the Classic Filters window wider displays some additional points on the scale.

Horizontal Scale: This shows the frequencies in Hz to which volume adjustments will be applied.

Vertical Scale: This scale is in dB and shows the amount of gain (amplification above 0 dB or attenuation below 0 dB) that will be applied to the audio at any given frequency.

VLC Player does not like that and puts the audio on only one speaker.Accessed by: Effect > Classic Filters. Handbrake is acting strangely with the mono audio track, though. Multi Band Compressor (preset: Enhance Hights) Noise reduction with sample (20%, other options at default)Ħ. Automatic Click Remover (limit: 30 / complexity: 16 - default settings)ĥ. FFT Filter, cutting everything below 40 Hz and above 8KHz.Ĥ. This is pretty much what I am looking for, except for the noise.ģ. The second is just the Bright Hype preset. The first one is exciter on 80%, reverb 10%, loudness maximizer 20%. Unfortunatelly, the hiss is also enhanced. The result is a lot brighter than anything that could be stored on tapes without HiFi. The Exciter effect, on the other hand, seems to try to reconstruct high frequencies from the low frequencies. Equalizers and compressors will raise something that is not there, they are basically only bringing back the noise that the high pass filter faded. I'm trying to rebuild high frequencies which were lost as the are out of the tape response. I tried multi-compressor, but either I can't find the right setup or it's not really what I was looking for. Clicks are annoying and there is only noise above ~8 KHz. I'll keep the automatic click remover and the low pass and high pass filters, though. It doesn't worth due to the artifacts and losts.

Try the 'raise vocals' preset as a starting point. The attached sample has no noise reduction (obviously!) and just applies some mid range boost and compression from the Audition Multi-compressor. Just applying some mid range boost and compression should help to extract a bit more 'presence' from what is - as you say - a pretty muffled source.

Fft filter audacity download