Stereo Sound Gain Modulation for Brainwave Induction Without Pitch Shift
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Solution Overview
Problem
Current methods for inducing brainwave synchronization through sound, such as binaural beats, require frequency adjustments in music, altering the pitch and compromising the listening experience.
Innovation Solution
A sound adjusting device with a processor and two speakers, where the volume gain of input signals is adjusted to produce specific wave formats for each speaker, allowing brainwave induction without changing the pitch of the music, using a sound processing unit to output signals to each speaker independently.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If binaural beats are used to induce brainwave synchronization, then the brainwave frequency can be induced, but the pitch of the music must be changed which compromises the listening experience
Solution Approach 1:
The invention separates the brainwave induction function from the music playback function by processing left and right channel signals independently through different wave formats (first wave format and second wave format), allowing each channel to contribute to brainwave induction while preserving the original music pitch and quality
Solution Approach 2:
The invention changes the wave format parameter of the audio signals rather than the frequency parameter, applying different wave formats to left and right channels to induce brainwaves while maintaining the original music frequency and pitch intact
2Reliability
If the frequency of music is changed to generate binaural beats, then brainwave resonance can be induced, but the original pitch of the music is lost
Solution Approach 1:
The invention processes left and right channel signals separately through different wave formats, extracting the brainwave induction function from the music playback function, thereby preserving the original music pitch while still achieving brainwave resonance
Solution Approach 2:
The invention introduces wave format as an intermediary mechanism between the audio signal and the brain, using wave format modulation rather than frequency modulation to induce brainwaves, thus avoiding direct alteration of the music pitch
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
Enables brainwave frequency induction without affecting the pitch of the music, offering a broader range of induced frequencies and improved listening experience compared to traditional binaural beats.
Implementation Method 1
Brainwave synchronization (brainwave entrainment) refers to the provision of periodic external stimuli, such as aural, visual or tactile stimuli. The brain naturally synchronizes the brainwave frequency with such periodic external stimuli.
Implementation Method 2
The binaural beat occurs when the two ears of the human body receive similar but different frequencies of sound and the sound waves are integrated in the brain to produce a third sound from a sound difference between the two ears, making people feel the beat of the third sound.
Data Source
AI summary
A method for inducing brain waves by sound has the following steps: receiving a first channel input signal and a second channel input signal; adjusting a volume gain of the first channel input signal to form a first channel output signal, wherein a format of the volume gain of the first channel output signal is a first wave format; adjusting a volume gain of the second channel input signal to form a second channel output signal, wherein a format of the volume gain of the second channel output signal is a second wave format, wherein there is a phase difference between the first wave format and the second wave format, wherein the formats of the first wave format and the second wave format are the same; outputting the first channel output signal to a first speaker; and outputting the second channel output signal to a second speaker.