Noise Removal
Posted: Tue Jul 31, 2018 10:34 pm
Those of us who grew up before the digital revolution remember tape or cassette recorders. Home recording in the pre DAW era consisted in bouncing tracks while playing along adding stuff. The result was, by todays standards, of a totally inacceptable quality. Each bounce added noise and degraded the payload. I have some such historical recordings with a terrible SNR, and I was curious to try to rescue what was possible. My attempts were not very successful.
Thre tricky part of NR is not to add color to the residual noise. I have been experimenting a lot and finally got something I consider useful. The architecture is similar to a vocoder, where the same audio is supplied to both the carrier and the modulator. Each frame is analyzed and a filter is constructedwhic keeps the strong spectral components and discards the rest.
Have fun.
Thre tricky part of NR is not to add color to the residual noise. I have been experimenting a lot and finally got something I consider useful. The architecture is similar to a vocoder, where the same audio is supplied to both the carrier and the modulator. Each frame is analyzed and a filter is constructedwhic keeps the strong spectral components and discards the rest.
Have fun.