Broadcast Receiver Acoustic Transition Control
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Solution Overview
Problem
Conventional broadcast receiving apparatuses inadequately control the switching of acoustic characteristics between digital and analog broadcasts, leading to rapid changes that can cause unpleasant listening experiences due to insufficient consideration of both signal reception intensity and state.
Innovation Solution
A broadcast receiving apparatus with a reception unit, sound controlling unit, and determination unit that gradually adjusts the acoustic characteristics of the digital broadcast to match those of the analog broadcast based on the reception intensity of the analog broadcast signal, while continuously assessing the digital broadcast's reception state to determine the necessity and timing of the switching control.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the broadcast receiving apparatus switches the output from digital broadcast to analog broadcast when digital reception deteriorates, then the reliability of broadcast reception is improved, but the acoustic characteristic changes rapidly causing unpleasant listening experience
Solution Approach 1:
The sound controlling unit performs switching control of acoustic characteristics in advance before the actual broadcast switching occurs. When the determination unit detects that digital broadcast reception has deteriorated to a level requiring switching to analog broadcast, the sound controlling unit gradually adjusts the acoustic characteristics to match the analog broadcast profile beforehand, so that when the broadcast source switches, the acoustic characteristic transition is smooth and imperceptible to listeners
Solution Approach 2:
The sound controlling unit dynamically adjusts acoustic characteristics based on real-time reception conditions. It continuously monitors digital broadcast reception quality and progressively modifies equalization parameters, volume levels, and other acoustic parameters to transition from digital to analog characteristics, creating a dynamic adaptation process that ensures smooth transitions regardless of when switching is required
2Object-affected harmful factors
If the sound controlling unit performs switching control to gradually approach analog acoustic characteristics, then the listening experience is improved, but the switching control accuracy is insufficient
Solution Approach 1:
The determination unit continuously monitors the actual reception state of digital broadcasts and provides feedback to the sound controlling unit. Based on this feedback, the sound controlling unit adjusts the progression of acoustic characteristic switching, accelerating or decelerating the transition as needed to ensure both smooth listening experience and precise control timing
Solution Approach 2:
The sound controlling unit precisely controls multiple acoustic parameters including equalization frequency and gain settings, volume levels, and bandwidth characteristics. By independently adjusting each parameter with high precision and coordinating their changes, the system achieves accurate switching control that faithfully reproduces analog broadcast acoustic characteristics while maintaining optimal listening experience
Data Source
AI summary
A broadcast receiving apparatus includes a reception unit, sound controlling unit, and determination unit. The reception unit receives a signal of an analog broadcast and a signal of a digital broadcast having the same broadcast content. The sound controlling unit performs, when an output of the broadcast receiving apparatus switched into the analog broadcast from the digital broadcast, a switching control of switching the output into the analog broadcast from the digital broadcast so that an acoustic characteristic of the output digital broadcast gradually approaches an acoustic characteristic of the analog broadcast based on a reception intensity of the signal of the analog broadcast. The determination unit determines, after the sound controlling unit starts the switching control, whether or not the switching control performed by the sound controlling unit is to be continued, based on reception state of the signal of the digital broadcast.