ISCA Archive Eurospeech 1999
ISCA Archive Eurospeech 1999

Noise subtraction with parametric recursive gain curves

Klaus Linhard, Tim Haulick

A well known technique for speech enhancementis spectral subtraction. This technique is attractivedue to its simplicity and its low computational cost.We have proposed a simple modification of the filtercoeficient calculation in form of a recursion of theprevious filter coeficient. Because of this recursionthe subtraction rule (gain curve) consists of twodifferent paths, one for increasing signal-to-noise-ratio and another for the decreasing ratio. In thispaper we will introduce a parametric version of thisrecursive approach with two parameters controllingthe crossover behaviour of the two paths. Althoughthis recursive version is a very simple algorithm itis easily adjusted to produce no musical noise andadditionally to get low speech distortion and/or lowresidual noise.


doi: 10.21437/Eurospeech.1999-575

Cite as: Linhard, K., Haulick, T. (1999) Noise subtraction with parametric recursive gain curves. Proc. 6th European Conference on Speech Communication and Technology (Eurospeech 1999), 2611-2614, doi: 10.21437/Eurospeech.1999-575

@inproceedings{linhard99_eurospeech,
  author={Klaus Linhard and Tim Haulick},
  title={{Noise subtraction with parametric recursive gain curves}},
  year=1999,
  booktitle={Proc. 6th European Conference on Speech Communication and Technology (Eurospeech 1999)},
  pages={2611--2614},
  doi={10.21437/Eurospeech.1999-575}
}