Automatic Tone/Bandwidth Control TRIZ Cases
- Personal Waveform Profile Audio Processing for Subjective Fidelity
Captured Personal Waveform Profiles adjust frequency and timing so listeners hear audio closer to the producer's intended perception.
- Loudspeaker Equalizer Filter With Independent Gain and Slope Control
Multiband shelving filters decouple band gain from break point slope, using gain correction to preserve base level during loudspeaker tuning.
- Audio Spectral Expansion Using Band Power Balancing
Band-pass filtering and RMS-based power adjustment boost low and high audio frequencies with fewer artifacts and low computation.
- Multi-Band Audio Signal Processing With Band-Specific Update Rates
Different update rates across audio bands prevent aliasing in high frequencies and avoid low-band oversampling to save computation.
- Equalization Control Curves to Prevent Frequency Response Ringing
Smooth control curves contour equalization across frequency bands to avoid sudden response steps and reduce audible ringing artifacts.
- Genetic Equalizer Tuning Through User Preference Comparisons
Binary listening comparisons guide a genetic algorithm to create personalized equalizer settings without time-consuming manual band adjustment.
- Equalizer Coefficient Interpolation for Headphone Response Compensation
A few user-controlled parameters interpolate preset EQ coefficients to compensate headphone frequency response without complex manual tuning.
- Multi-Sensor Microphone Equalization for Acoustic Resonance Control
Multiple microphone sensors and equalizer compensation stabilize resonator-induced frequency offsets for clear high-volume recording.
- Adaptive Bass Substitution Filtering for Small Loudspeakers
Variable gain and bandwidth bass substitution boosts perceived low bass in small loudspeakers while preserving natural timbre and limiting distortion.
- State Variable Equalizer Filter With Fine Corner Frequency Control
Discrete MDAC attenuation control lets a state variable equalizer tune corner frequency in fine steps while keeping digital control practical.
- Loudspeaker Equalization Using Room Gain and Multi-Point Sound Fields
Multi-point sound pressure measurements and room-gain compensation shape loudspeaker equalization for stable sound quality in cabins and rooms.
- Headset Equalizer Selection for Variable Voice Call Acoustics
Predetermined headset EQ options let mobile users adjust downlink call audio in real time to match ear shape and handset position.
- Dynamic Audio Enhancement Using Headroom-Based Gain Control
Dynamic headroom control boosts bass or treble while predicting clipping, preserving sound quality in compact low-cost audio devices.
- Automatic Equalizer Preference Transfer Across Audio Modes
User changes in one equalizer mode are mapped to other content-based modes, cutting repetitive setup and keeping sound tone consistent.
- Differential Amplifier Circuit With Independent Output Voltage Range
A two-stage voltage/current and current/voltage conversion scheme lets a differential amplifier set output range independently of input voltage.
- Multi-Stage Buffer Amplifier for Swing and Slew Rate Control
Selectable bias currents across serial buffer stages widen output swing choices and control slew rate to cut jitter in high-speed links.