G An analog voice signal, sampled at the rate of 8 kHz (8000 samples/second), is to be transmitted by using binary frequency shift keying (FSK). The modulator uses two frequencies 1 MHz and 1.2 MHz for signaling the logical bit values 0 and 1. The receiver uses envelope detection. Determine the maximum possible resolution (bits per sample) with which the sampled voice signal can be quantized at the input to the modulator.