DISADVANTAGE :
? Even the best speech recognition systems sometimes make errors. If there is noise or some other sound in the room (e.g. the television or a kettle boiling), the number of errors will increase.
? Speech Recognition works best if the microphone is close to the user (e.g. in a phone, or if the user is wearing a microphone). More distant microphones (e.g. on a table or wall) will tend to increase the number of errors.
? In Speech recognition system, there is a possibility of unauthorized usage. Since this doesn’t depends upon which person is speaking. No password protection.