public static boolean isAudioHeader(int h1, int h2, int h3, int h4) {
        if (h1 == -1 || h2 == -1 || h3 == -1 || h4 == -1) {
            return false;
        }
        // Check for the magic 11 bits set at the start
        // Note - doesn't do a CRC check
        if (h1 == 0xff && (h2 & 0x60) == 0x60) {
            return true;
        }
        return false;
    }
Does this appear to be a 4 byte audio frame header?
tika-parsers/tika-parsers-standard/tika-parsers-standard-modules/tika-parser-audiovideo-module/src/main/java/org/apache/tika/parser/mp3/AudioFrame.java