Installation for controlling the playing time of a sporting event

A portable system for acquisition and detection of a refereeing acoustic signal signaling a stop and/or resumption of playing time of a sporting event, the portable system comprising:

• an acoustic sensor designed to measure external acoustic signals and deliver raw analog measuring signals in response to the measure of the external acoustic signals;
• an analog/digital converter connected to the acoustic sensor and designed to convert the raw analog measuring signals into digital measuring signals;
• a digital processor connected to the analog/digital converter and designed to process and analyze the digital measuring signals so as to detect transmission or non-transmission of the refereeing acoustic signal among the external acoustic signals measured by said acoustic sensor, said digital processor delivering to a transmitter a digital refereeing signal in response to the detection of the refereeing acoustic signal;
• and
• the transmitter connected to the digital processor and designed to transmit said digital refereeing signal;
• wherein the digital processor is designed to process and analyze the digital measuring signals so as to detect, among the acoustic signals measured by said acoustic sensor, a specific vocal order emitted by the referee to signal the resumption of the playing time, said digital processor delivering to the transmitter a digital signal for restarting the playing time in response to the detection of said vocal order;
• and
• the transmitter is designed to transmit said digital signal for restarting the playing time.