if self.version == 500 {
abuf = alloc_audio_buffer(self.ainfo, COEFFS, self.chmap.clone())?;
let mut adata = abuf.get_abuf_f32().unwrap();
if self.version == 500 {
abuf = alloc_audio_buffer(self.ainfo, COEFFS, self.chmap.clone())?;
let mut adata = abuf.get_abuf_f32().unwrap();