func toBytes(l, r []int16) []byte {
	if len(l) != len(r) {
		panic("len(l) must equal to len(r)")
	}
	b := make([]byte, len(l)*4)
	for i := range l {
		b[4*i] = byte(l[i])
		b[4*i+1] = byte(l[i] >> 8)
		b[4*i+2] = byte(r[i])
		b[4*i+3] = byte(r[i] >> 8)
	}
	return b
}
func toBytes(l, r []int16) []byte {
	if len(l) != len(r) {
		panic("len(l) must equal to len(r)")
	}
	b := make([]byte, len(l)*4)
	for i := range l {
		b[4*i] = byte(l[i])
		b[4*i+1] = byte(l[i] >> 8)
		b[4*i+2] = byte(r[i])
		b[4*i+3] = byte(r[i] >> 8)
	}
	return b
}
func toBytes ( l , r [ ] int16 ) [ ] byte { if len ( l ) != len ( r ) { panic ( " " ) } b := make ( [ ] byte , len ( l ) * 4 ) for i := range l { b [ 4 * i ] = byte ( l [ i ] ) b [ 4 * i + 1 ] = byte ( l [ i ] >> 8 ) b [ 4 * i + 2 ] = byte ( r [ i ] ) b [ 4 * i + 3 ] = byte ( r [ i ] >> 8 ) } return b }
// toBytes returns the 2ch little endian 16bit byte sequence with the given left/right sequence.
toBytes returns the 2ch little endian 16bit byte sequence with the given left / right sequence .