filters

Documentation

Overview

filters implement easy to use audio filters.

Index

• func HighPass(buf *audio.PCMBuffer, cutOff float64) (err error)
• func LowPass(buf *audio.PCMBuffer, cutOffFreq float64) (err error)

Functions

func HighPass

func HighPass(buf *audio.PCMBuffer, cutOff float64) (err error)

HighPass is a basic LowPass filter cutting off the audio buffer frequencies below the cutOff frequency.

func LowPass

func LowPass(buf *audio.PCMBuffer, cutOffFreq float64) (err error)

LowPass is a basic LowPass filter cutting off CutOffFreq is where the filter would be at -3db. TODO: param to say how efficient we want the low pass to be. matlab: lpFilt = designfilt('lowpassfir','PassbandFrequency',0.25, ...

'StopbandFrequency',0.35,'PassbandRipple',0.5, ...
'StopbandAttenuation',65,'DesignMethod','kaiserwin');