go-equalizer provides equalizers based on the Robert Bristow-Johnson's audio EQ cookbook.
This package supports the following digital filters:
- Low-pass
- High-pass
- All-pass
- Band-pass
- Band-reject
- Low-shelf
- High-shelf
- Peaking
$ go get -u github.com/moutend/go-equalizerSee the example directory.
package main
import "github.com/moutend/go-equalizer/pkg/equalizer"
func main() {
// Audio signal
input := []float64{ /* ... */ }
output := make([]float64, len(input))
// Create the band-pass filter.
bpf := equalizer.NewBandPass(44100, 440, 0.5)
for i := range input {
output[i] = bpf.Apply(input)
}
}NOTE: go-equalizer does not provide the way to read the audio file as a float64 slice.
MIT