A vehicle mounted control apparatus comprising: a speech recognition section adapted to recognize a speech command input by a user via a speech input device; and a control section adapted to select a user from among a list of a plurality of users previously registered in a memory according to the user's input by the present user, to compare a standard pattern of speech of the selected user previously stored with the pattern of input speech of the selected user, to analyze a plurality of features of the speech and to determine a cause of incapability of recognition of the speech command when the speech command cannot be recognized by the speech recognition section, and to give a notice on a result of the analysis, wherein the control section is adapted to identify which command of a plurality of speech commands uttered by the user is input and, if the control section determines that the state of the speech command is good, to execute a processing corresponding to the identified speech command, and if the control section cannot identify the speech command, to determine that the state of the speech command is not good and to analyze the state of the speech command, the control section is adapted such that said notice is given by changing a display on a screen on the basis of a display format associated with the result of the analysis, wherein the display format is a color displayed on the screen, wherein for different analysis results for one and the same item of analysis, a colour of the same colour group is used in such a manner that, when a level of the item of analysis is higher than a standard, a dark colour of this colour group is used, whereas when a level of the item of analysis is lower than a standard, a light colour of this colour group is used. a speech recognition section adapted to recognize a speech command input by a user via a speech input device; and a control section adapted to select a user from among a list of a plurality of users previously registered in a memory according to the user's input by the present user, to compare a standard pattern of speech of the selected user previously stored with the pattern of input speech of the selected user, to analyze a plurality of features of the speech and to determine a cause of incapability of recognition of the speech command when the speech command cannot be recognized by the speech recognition section, and to give a notice on a result of the analysis, wherein the control section is adapted to identify which command of a plurality of speech commands uttered by the user is input and, if the control section determines that the state of the speech command is good, to execute a processing corresponding to the identified speech command, and if the control section cannot identify the speech command, to determine that the state of the speech command is not good and to analyze the state of the speech command, the control section is adapted such that said notice is given by changing a display on a screen on the basis of a display format associated with the result of the analysis, wherein the display format is a color displayed on the screen, wherein for different analysis results for one and the same item of analysis, a colour of the same colour group is used in such a manner that, when a level of the item of analysis is higher than a standard, a dark colour of this colour group is used, whereas when a level of the item of analysis is lower than a standard, a light colour of this colour group is used.