rephrase error message

        result_stdout = result.stdout.decode("utf-8")

        if "-rms" not in result_stdout:

            raise RuntimeError(

                "An old version of bs1770demo binary was detected. Use the new one. See bin/README.md for details."

                'An bs1770demo executable without RMS support (cmdl option "-rms") was detected. Please update the bs1770demo executable. See bin/README.md for details.'

            )

    if not isinstance(input, audio.BinauralAudio) and not isinstance(