Wireless Receiver Tuning Assisting Unit
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Solution Overview
Problem
Existing wireless systems for musical instruments lack an integrated solution for assisting the tuning process, often requiring external devices and separate amplifiers, which can lead to operational errors and inconvenience during concerts or audio recordings.
Innovation Solution
A wireless receiver with a built-in tuning assisting unit that converts analog signals from musical instruments into digital signals, using operational amplifiers, resistors, and capacitors to determine zero crossings and provide frequency information, eliminating the need for external cables and amplifiers.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a wireless receiver uses an integrated tuning assisting unit, then the ease of operation is improved and operational errors are reduced, but the device complexity increases due to additional circuit components
Solution Approach 1:
The patent combines the tuning assisting unit and audio amplifier into a single integrated circuit within the wireless receiver housing. The tuning unit shares the audio amplifier circuitry with the main audio processing function, eliminating the need for separate external amplifiers and cables. This merging reduces operational complexity while maintaining the dual functionality of audio transmission and instrument tuning assistance
Solution Approach 2:
The audio amplifier circuit serves dual purposes: it amplifies audio signals for wireless transmission and simultaneously amplifies weak instrument signals for tuning detection. This multi-functional use of the same hardware components allows the device to perform both audio transmission and tuning assistance without requiring additional dedicated amplifiers, thereby improving ease of operation without proportionally increasing device complexity
2Measurement precision
If the tuning assisting unit uses an audio amplifier, then the measurement precision of frequency is improved, but the use of energy increases due to additional amplification circuitry
Solution Approach 1:
The audio amplifier is used for both its primary function of amplifying audio signals for transmission and a secondary function of amplifying weak instrument signals for frequency detection. By reusing the same amplifier circuitry for both purposes, the patent avoids the energy cost of adding a separate dedicated amplifier for tuning, thus improving measurement precision without proportionally increasing power consumption
Data Source
AI summary
A wireless receiver for receiving a wireless transmitted audio signal from a wireless transmitter is provided. The wireless receiver comprises a tuning assisting unit for assisting in the tuning of a music instrument coupled to the wireless transmitter. The tuning assisting unit indicates whether the audio signal from the music instrument corresponds to a specified frequency. The wireless receiver furthermore comprises an audio amplifier for amplifying the received audio signal. The wireless receiver furthermore comprises a housing which incorporates the tuning assisting unit and the audio amplifier.