System and method for transmitting an oral message in a vehicle

A method for allowing at least one passenger to hear an oral message uttered by an authorized person in a transport means, said at least one passenger wearing a personal listening means associated or not associated with a mobile terminal and broadcasting an audio signal into the hearing apparatus of said at least one passenger, the oral message being uttered to the at least one passenger, said at least one passenger hearing a perceived audio signal comprising the audio signal, the oral message and stray noise, said method comprising the following steps:

• detecting the oral message intended to be made audible to said at least one passenger,
• recording the oral message,
• encoding said recorded oral message as a voice signal,
• configuring a “payload signal to noise” ratio in the perceived audio signal, in which the payload signal consists of the oral message and in which the audio signal and the stray noise form part of the noise, at a value greater than a predetermined threshold, so as to make the oral message audible to the at least one passenger, at the expense of the audio signal,
• broadcasting said voice signal on a wireless communication network, to a mobile terminal connected to the personal listening means or directly to the personal listening means in order to broadcast it into the hearing apparatus of said at least one passenger using said personal listening means.