mode such as providing the input signal as including one or more waveforms via one mode and command information e g scheduling and programming information via another mode the communication system 14 can be capable of bi directional communications such as also including a transmitter or transceiver circuitry the transmitter and receiver portions of the communication system 14 can employ the same or different communication modes the memory 12 can be implemented as an analog memory such as is capable of storing an analog version of the waveform that is received by the communication system 14 the memory can also be implemented as digital memory that stores a digital representation or sample of the input waveform or stores a digitally encoded version of the waveform for instance the memory 12 can store the sample waveform as a digital sample such as using pulse code modulation pcm or adaptive differential pulse code modulation adpcm or pulse width modulation pwm although other modulation techniques can be utilized the digital sample of the waveform further may be stored in a compressed format according to one or more codecs e g mp3 aac 3gpp wav etc although compression is not required there are a multitude of varying standards that can be grouped in three major forms of audio codecs including for example direct audio coding perceptual audio coding and synthesis coding any one or more of which can be employed to store a digital representation of waveforms in the memory 12 a playback system 16 is configured to retrieve and play back one or more waveforms according to selected waveform data stored in the memory 12 the playback system 16 can be implemented as hardware e g.