a system , computer program , device and method for transmitting and receiving audio and video in various environments will now be disclosed in terms of various exemplary embodiments . this specification discloses one or more embodiments that incorporate features of the invention . the embodiment ( s ) described , and references in the specification to “ some embodiments ”, “ one embodiment ”, “ an embodiment ”, “ an example embodiment ”, etc ., indicate that the embodiment ( s ) described may include a particular feature , structure , or characteristic . such phrases are not necessarily referring to the same embodiment ( s ). when a particular feature , structure , or characteristic is described in connection with an embodiment , persons skilled in the art may effect such feature , structure , or characteristic in connection with other embodiments whether or not explicitly described . in the several figures , like reference numerals may be used for like elements having like functions even in different drawings . the figures are not to scale . the embodiments described , and their detailed construction and elements , are merely provided to assist in a comprehensive understanding of the invention . thus , it is apparent that the present invention can be carried out in a variety of ways , and does not require any of the specific features described herein . also , well - known functions or constructions are not described in detail since they would obscure the invention with unnecessary detail . any smartphone ( e . g . iphone ®, android ®, blackberry ®, etc ) or pda has the ability to receive signals from various transmitting devices . a new audio and / or video transmission and reception system employs smart phones ( and pdas ) as receivers for audio and / or video transmissions . the system enables users to listen and / or view the transmission in real time and / or record the transmission for later playback , either on the smartphone or a compatible computer to which the smartphone is docked . the system uses wireless communication between the transmitter and the receiving smartphone and is not dependent on the fidelity of sound in the vicinity of the receiver or the absence of visual obstructions between the user and the object of the video recording . in some embodiments , the smartphone or pda is configured to receive these signals by the installation of an “ application ” that lets the smartphone or pda recognize the source of the signal and enables the smartphone to perform as outlined above . smart phones or pda enable users to install applications beyond games and two way communication . in fact , in several embodiments smartphone applications , in conjunction with installed hardware ( i . e . transmitters ), transform the smartphone into a new business and entertainment tool . smartphone or pda devices can receive signals from various local wifi transmitters and / or repeaters ( slave transmitters ) and in conjunction with the appropriate application can discriminate and select between the various input signals and either provide real time audio and video output or store the transmission as an audio / video file to be played back or transcribed to a computer or other device at a later time . in one embodiment , users of a smartphone select an audio channel from a transmitter - equipped tv screen , such as are common in sports bars and other public places . in one embodiment , users are able to audit and record university class room lectures , business meetings and seminar presentations and live concerts and performances without worrying about sound fidelity or visual obstructions during the presentation . in one embodiment , an audio transmitter with a specific sending frequency is attached to the “ audio out ” of a tv set or tv control module . the transmitter wirelessly transmits the audio signal to the smartphone which , being enabled by the appropriate application , converts the transmitted signal into sound and / or allows the operator to record the audio transmission without interference from any other noise sources in the vicinity of the receiver . this system has applicability to sports bars where there are multiple tv screens but the sound is muted , as well as any other public or private venue where “ for public use ” tv is broadcast , but without the sound . the application enables a smartphone to discriminate between various signals assigned to each discrete channel / tv screen , and lets the operator select which channel to listen to . in some embodiments , each transmitter is assigned a different frequency so that the smartphone application can distinguish between the transmitted signals and the signals do not “ talk over each other ”. the transmitter in one embodiment is assigned its transmission frequency at the factory , and in one embodiment on installation . in some embodiments the audio signal , transmitted via the wifi receiver to the smartphone , is converted to text and displayed on the screen of the smartphone or pda . this text may be displayed in conjunction with accompanying visual materials , such as video or pictures or presentation materials . the smartphone may be programmed to process the audio signal in order to integrate it into or make it compatible with audio - to - text conversion software . fig1 shows a tv 5 with installed transmitter 3 transmitting the tv audio signal wirelessly to smart phones 1 programmed with a software application 2 that receives and manipulates the tv audio signal . this embodiment is typically used in an environment with several tv screens ( e . g . in sport bars ), where each tv has an individual installed transmitter . the transmitters send the muted audio output of the tv screen to the receiver in the - smartphone . the user activates the installed application and selects the appropriate transmitter of interest . the user may choose to listen to the broadcast event , either through an earpiece or the installed speaker of the smartphone . alternatively , a common selector box might be used to transmit the individual audio signals , each with its own assigned frequency , to the smartphone . in one embodiment , a transmitter with a specific sending frequency is attached to a microphone or video recording device such as might be used by a presenter in a lecture hall , a business seminar or at a business meeting or live concert or entertainment ( or any other performance or presentation or similar occasion ). the transmitter wirelessly transmits the audio and / or video signal to the smartphone which , being enabled by the appropriate application converts the transmitted signal into sound and / or video display and / or allows the operator to record the audio / video transmission without interference from any other noise sources or visual obstructions in the vicinity of the receiver . fig2 shows a microphone 9 and video camera 8 connected to a transmitter 3 transmitting an audio and video signal wirelessly to smart phones 1 programmed with a software application 2 that receives and manipulates the audio and video signal . this embodiment is useful for example in lecture hall setting , as might be found at any large university , at a business convention or any other live presentation . the lecturers or performers are equipped with a microphone that transmits the sounds via transmitter 3 to the smartphone . in some embodiments , the presentation is video recorded and the video signal is transmitted to the smartphone . the listener / viewer enables the smartphone , through the installed application , to record the proceedings . all transmissions can be code protected , accomplished within the application to allow only authorized users to access the audio / video presentations . if payment is required to view or record the proceedings , authorization to view or record the transmissions can be accomplished by payment through paypal or similar programs , activated at the time of the proceedings . fig3 shows a conference phone / microphone 13 and video recorder 8 connected to a transmitter 3 transmitting an audio and video signal wirelessly to smart phones 1 programmed with an application 2 that receives and manipulates the audio and video signal . this is useful for example at a business meeting with either a central microphone or strategically placed microphone or video recorder connected to a transmitter . the transmitter relays the audio and video presentation to anyone equipped with a smartphone . again , the installed application allows the user to listen to , and / or view and record the proceedings or to be replayed later or transcribed to a computer . further manipulation of the recording with other software is also possible . transmissions can be code protected , within the application , to allow only authorized users access to the transmissions . this system has applicability in a setting where a presenter might use a microphone or video recorder to address a large number of listeners , such as in a large lecture hall in a university . the system also has applicability in virtually any business setting , where the participants want to keep accurate record of the proceedings without having to be in a location critical to record the human voice without any noise interference . in certain embodiments , the application enables the user to identify by date , time and subject the recorded lecture or presentation . additionally , the application allows the user to bookmark sections of the recordings as well as make notations on a separately enabled notepad . these notations can be associated with the recording in a known fashion . fig4 is a diagram of a tv transmission and reception system . a tv signal from a satellite 15 , or directtv or another television provider 17 , is sent to audio / video control box 19 . from there , the signal is sent to televisions 21 . the audio portion of the signal is sent to an audio sending box 23 , which transmits the audio signal through the use of discrete frequencies to a smartphone 1 . fig5 is a diagram of a portion of an alternative tv transmission and reception system . in this diagram , instead of the audio sending box 23 transmitting the audio to a smartphone 1 , an audio signal transmitter 27 is attached to the individual tv , which in turn transmits the audio to smartphone 1 . fig6 is a diagram of a microphone and / or video recorder transmitting a signal to a smart phone . in this diagram , a microphone 9 and video camera 8 are connected to a transmitter 29 that transmits audio and video signals wirelessly to smartphone 1 . typically , only one device would be connected to the transmitter , the microphone if no video camera is present , the video camera if it is present , since it carries both audio and video signals . however , in certain circumstances multiple devices in the same area are connected to a single transmitter or to separate transmitters . in some embodiments where multiple devices are connected to a single transmitter , the transmitter combines the signals and transmits them as a single signal , in some embodiments the transmitter transmits the signals separately . in some embodiments , with one transmitter or multiple transmitters sending separate signals , the smartphone application combines the received signals . fig7 is a diagram of a microphone , phone , and video recorder transmitting a signal to a smartphone . the microphone 9 , video camera 8 , and phone 13 are connected to a transmitter 29 that signals wirelessly to smartphone 1 . an example of a situation in which a transmitter would receive multiple input signals is in the case of a teleconference , where some of the audio input to the transmitter is in one embodiment received over the telephone line , while other audio input is received by the transmitter from the phone &# 39 ; s microphone or another microphone closer to the speaker . fig8 is a diagram of multiple video recorders transmitting a signal to a smartphone . in this diagram , a video camera 8 is connected to a transmitter 29 that transmits audio and video signals wirelessly to smartphone 1 . this arrangement is repeated as many times as there are separate events to be monitored in one location . typically , only one device would be connected to the transmitter . however , in certain circumstances multiple devices in the same area are connected to a single transmitter or to separate transmitters . in some embodiments where multiple devices are connected to a single transmitter , the transmitter combines the signals and transmits them as a single signal , in some embodiments the transmitter transmits the signals separately . in some embodiments , with one transmitter or multiple transmitters sending separate signals , the smartphone application combines the received signals . the smartphone application will allow the user to switch between the various transmitters to view and record the activity that is video recorded at a specific location . in one exemplary embodiment , a transmitter is located at each hole on a golf course during a tournament . the user of the smartphone would be able to select any one of the transmitters to listen and / or view the action at that particular hole while at another location on the golf course . fig9 is a diagram of a single transmitter 29 providing content from a local restaurant / bar computer 30 to the smartphone 1 . the smartphone user can view the menu and order via the smartphone which communicates the order to the transmitter , which in turn transmits the order to the bar / restaurant register . in some embodiments this system can be used at resorts or on cruise ships to view activities and sign up for certain activities by using the smartphone and local transmitter . in an exemplary embodiment , a guest at a hotel equipped with a local wifi transmitter views the restaurant menu and orders food , all while sitting at the pool with a smartphone . fig1 is a diagram of a system of multiple tv screens 5 such as are found in sportsbooks or other legal gambling locales , providing audio via a local transmitter 29 to the smartphone 1 . the smartphone 1 can communicate bets via the local transmitter to the sportbook &# 39 ; s betting computer 31 . fig1 is a diagram of a system where two or more smart phones 1 , connected to the same transmitter 29 , recognize the presence of each other , if this function is enabled by the appropriate application , and allow communication via the local transmitter without revealing the phone numbers associated with each device . this provides a social networking functionality . fig1 is a simplified diagram of typical components that constitute the single channel transmitter . it is recognized that other similar components , code applications , libraries and connection devices may achieve the same results . k50 chip 31 includes left , right , and video audio / video (“ a / v ”) inputs 33 connected to analog - to - digital ( a / d ) converters 35 and high definition multimedia interface ( hdmi ) input 37 and media access controlled ( mac ) interface 39 . the k50 chip 31 is connected by ethernet 41 to mac interface 43 of x8787 chip 45 , from which a signal is transmitted . fig1 is a simplified diagram of a multi channel transmitter with multiple inputs . similar components , code applications , libraries , and connection devices could be used to achieve the same functionality as the components identified in this diagram . floating point x6748 dsps 47 have a / v inputs 49 connected to a / d converters 51 and connect via mac interfaces 53 with ethernet switch chip 55 . ethernet switch chip 55 connects via a custom interface 57 with a wifi chip 59 , such as an 802 . 3 b , g , n bluetooth ® 4 . 0 chip , from which a signal is transmitted . it should be understood that the invention is not limited to smart phones . any comparable electronic device such as personal digital assistants and / or other audio / video devices can be used to receive the transmitted signals and to display , record , and process them . wherever smart phones are referred to above , any computing device such as hand - held computing devices like pdas , laptops or netbooks , smart watches , smart viewers or other ip devices , or even desktop computers may be substituted . while the necessary software applications must be adapted for the hardware of various devices , such modifications are generally within the ability of a person skilled in the art . the smartphone applications and related technology are of great interest to users of smart phones who frequent sports bars , are students at universities or schools with large auditoriums or class rooms , or are participants in business seminars or large corporate meetings , and to sports bars , schools , and organizations , government entities , large corporations , and motivational speakers that put on business seminars / meetings . the system can be distributed through businesses that provide entertainment tv and audio packages to sports bars , and that specialize in selling business and av equipment to schools , universities , large business and government organizations and the entertainment industry . another distribution channel is entertainment production companies that record live performances for resale in the form of a cd . the invention is not limited to the particular embodiments described above in detail . those skilled in the art will recognize that other arrangements could be devised , for example , various tools for manipulating received audio and / or video on a smartphone or other device , various devices into which a transmitter is integrated , and various types of wireless signals that are transmitted . the invention covers any audio or video signal source , including but not limited to telephones , microphones , tvs , audio - video recorders , amplifiers , and similar systems . while the invention has been described with reference to specific illustrative embodiments , modifications and variations of the invention may be constructed without departing from the scope of the invention .