| 摘要 |
The present invention is directed to wireless analog audio systems for transmission and reception of a signal from an electric analog audio signal-generating device to an electric analog audio signal-receiving device. Examples of electric analog audio signal-generating devices are radio players, tape players, CD players, mp3 players, computers, television audio, electric guitars, electric music keyboards, video cassette recorders (VCR) and the like. Examples of electric analog audio signal-receiving devices are electric-guitar amplifiers, headphones and speaker systems. In the following and for the sake of simplicity, electric analog audio signal-generating devices may be referred to as signal-generating devices, and electric analog audio signal-receiving devices may be referred to as signal-receiving devices. Some devices, such as guitar multieffects, may have both functions i.e. the reception as well as the transmission of electric analog (or digital) signals. This type of devices may be an intermediate device between a signal-generating device and a signal-receiving device. An audio transceiver may include a standard 6.3, 3.5 or 2.5-inch audio jack-plug or standard 6.3, 3.5 or a 2.5-inch audio jack-socket to facilitate the connection to the signal-generating device or to the signal-receiving device. The audio transceiver system may contain a front end either on chip or as an external component. The front end may use a direct conversion scheme to facilitate the broadcast. This front end may be specially adapted to transmit audio signals by using a low pass filter to filter out undesired frequencies. The low pass filter output signal may be in communication with an A/D converter whose output may be in communication with a baseband processing system to carry out typical baseband tasks such as digital low pass filtering, encoding and decoding etc. The front-end output may be in communication with an antenna for wireless transmission/reception of a signal. The transmitted signal may be transmitted to a signal-receiving device. In particular, for the case of electric guitars, a method is presented of converting a conventional guitar into a wireless digital guitar. The guitar is adapted to generate analog audio signals, convert those signals into digital signals, format the digital signals according to a digital communication protocol, and to output the formatted signals. The guitar may include a novel multi-signal guitar pickup that generates some of the analog audio signals. The interface device of the present invention is adapted to wirelessly and in real time receive digital signals, convert those signals into analog signals representing what is being played at the guitar, and output the analog signals to a standard guitar amplifier. Moreover, the system presented here does not require any modification of standard electric guitars or standard electric guitar amplifiers to make this happen. It is emphasized that this abstract is provided to comply with the rules requiring an abstract that will allow a searcher or other reader to quickly ascertain the subject matter of the technical disclosure. It is submitted with the understanding that it will not be used to interpret or limit the scope or meaning of the claims.
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