speexdsp is a Golang bindings for libspeexdsp, provides PCM sample rate converter for PCM coding.
Linux:
sudo apt-get install libspeexdsp-dev
go get -v github.com/aam335/speexdsp
macOS:
brew install speexdsp
go get -v github.com/aam335/speexdsp
r, err := speexdsp.ResamplerInit(2, 48000, 44100, speexdsp.QualityDefault)
if err != nil {
panic(err)
}
defer r.Destroy()
var inpcm []int16
// fill "inpcm"
if readed, outpcm, err := r.PocessIntInterleaved(inpcm); err != nil {
panic(err)
}
// "readed" contains number of int16 values read from "inpcm"/
// "outpcm" contains resampling result (length may differ from "inpcm")You can find more examples in tests.