Speech recognition system and a method for providing a speech recognition service

A speech recognition system comprising:

• a processor configured to
• extract information, required to perform a control intended by a user, from a voice signal of the user in a vehicle, and
• generate a control signal for performing the control intended by the user;
• and
• a memory configured to map and store a tap signal and a command corresponding to the tap signal,
• wherein, the processor is further configured to
• when the tap signal stored in the memory is included in an audio signal input through a microphone, generate the control signal based on the command corresponding to the tap signal stored in the memory,
• store a tap signal input through the microphone and generate, in a registration mode where the tap signal is stored in the memory and based on a characteristic component of the tap signal input through the microphone being identical to a characteristic component of the tap signal stored in the memory, guide information so that numbers different from a number of characteristic components of the tap signal stored in the memory are registered,
• generate guide information in the registration mode so that the user inputs another tap signal when the characteristic component of the tap signal input through the microphone is identical to the characteristic component of the tap signal stored in the memory, and when tap signals from a tap signal including a single number of the characteristic component to a tap signal including an N number of the characteristic components are stored in the memory, N being an integer greater than or equal to 2 and representing a threshold number, and output the guide information through a display or a speaker, and
• register in the registration mode a smallest number among the numbers different from the number of characteristic components of the tap signal stored in the memory when the characteristic component of the tap signal input through the microphone is identical to the characteristic component of the tap signal stored in the memory, and when tap signals from a tap signal including a single number of the characteristic component to a tap signal including an N number of the characteristic components are not stored in the memory.