pub trait SampleParser<T> {
    fn parse(data: &[u8]) -> T;
}

pub struct Signed16PCM;
impl SampleParser<f64> for Signed16PCM {
    fn parse(chunk: &[u8]) -> f64 {
        (chunk[0] as i16 | (chunk[1] as i16) << 8) as f64
    }
}