Speech Modulator Pitch Phase Differential Attention
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Solution Overview
Problem
Conventional car navigation systems and emergency broadcasting methods fail to effectively draw attention and notify dangers due to increased stimulation, leading to delayed user responses and restricted actions.
Innovation Solution
A speech processing apparatus that modulates the pitch and phase of speech output between speakers placed at different angles to enhance user attention without changing the intensity of speech signals, utilizing a specifier and modulator to identify and emphasize specific parts of speech for attention drawing and danger alerts.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of information
If stimulation intensity is increased for attention drawing and danger notification, then the noticeability of critical messages is improved, but user response time is delayed and actions are restricted
Solution Approach 1:
The patent changes acoustic parameters (pitch and phase) of the speech signal to enhance noticeability. The pitch modulation shifts the fundamental frequency by ±10-20 Hz and phase modulation applies ±90° phase shifts to specific time segments, creating noticeable acoustic variations that draw attention without requiring intensity increases.
Solution Approach 2:
The patent utilizes acoustic vibration through pitch and phase modulation to create attention-drawing effects. The modulated speech signals produce audible vibrational patterns that naturally capture user attention, replacing the need for high-intensity stimulation while maintaining effectiveness.
2Loss of information
If high intensity stimulation is used for emergency broadcasting, then the clarity of critical information is improved, but the user experience deteriorates due to surprising and uncomfortable effects
Solution Approach 1:
The patent applies pitch modulation (±10-20 Hz) and phase modulation (±90°) to enhance the clarity of critical information segments. These parameter changes create distinct acoustic signatures for emphasis without the harmful side effects of high-intensity stimulation, maintaining user comfort while improving information delivery.
3Loss of information
If pitch and phase modulation is applied to speech signals, then user attention and clarity are enhanced, but the complexity of the speech processing system increases
Solution Approach 1:
The patent implements pitch and phase modulation using signal processing techniques that generate modulated speech signals. The pitch modulation unit shifts frequency by ±10-20 Hz and the phase modulation unit applies ±90° phase shifts, achieving enhanced attention and clarity through relatively simple acoustic parameter adjustments.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The apparatus effectively increases user attention and clarity by using differential pitch and phase modulation, allowing for smoother and more immediate responses to critical situations without surprising the user.
Implementation Method 1
a modulator that modulates the emphasis part of at least one of first speech to be output to the first output unit and second speech to be output to the second output unit so that a pitch is different between an emphasis part of the first speech and an emphasis part of the second speech
Implementation Method 2
at least one of a pitch and a phase is different between the emphasis part of the first speech and the emphasis part of the second speech
Data Source
AI summary
A speech processing apparatus includes a specifier, and a modulator. The specifier specifies any one or more of one or more speeches included in speeches to be output, as an emphasis part based on an attribute of the speech. The modulator modulates the emphasis part of at least one of first speech to be output to the first output unit and second speech to be output to the second output unit such that at least one of a pitch and a phase is different between the emphasis part of the first speech and the emphasis part of the second speech.