+/// Converts the captcha to a base64 encoded wav audio file
+pub(crate) fn captcha_as_wav_base64(captcha: &Captcha) -> String {
+ let letters = captcha.as_wav();
+
+ let mut concat_letters: Vec<u8> = Vec::new();
+
+ for letter in letters {
+ let bytes = letter.unwrap_or_default();
+ concat_letters.extend(bytes);
+ }
+
+ // Convert to base64
+ base64::encode(concat_letters)
+}
+