let abuf = alloc_audio_buffer(ainfo, duration, bsi.acmod.get_channel_map(bsi.lfeon))?;
let mut adata = abuf.get_abuf_f32().unwrap();
let abuf = alloc_audio_buffer(ainfo, duration, bsi.acmod.get_channel_map(bsi.lfeon))?;
let mut adata = abuf.get_abuf_f32().unwrap();