The Acoustic Science of
Notch Filtering
How tailored acoustic notch filters and procedural nature sound relieve auditory hyper-fixation without blasting destructive broadband noise into your ears.
1. Lateral Inhibition
When neurons adjacent to the tinnitus frequency are stimulated by pleasant ambient sound while the tinnitus frequency itself is quieted, neighboring healthy neurons inhibit hyperactive signaling in the auditory cortex.
2. De-Fixation & Attention
Tinnitus distress is largely maintained by cognitive vigilance. By softly bridging the contrast between dead room silence and your internal ringing, your brain stops treating the ringing as an urgent alarm signal.
3. Soften vs. Cover Modes
Soften carves out the notch (ideal for sleep without added noise fatigue). Cover introduces subtle band-pass noise directly around the pitch for active daytime masking during intense spikes.
Fit Sound to My Ears: Calibration EQ
Human ears do not perceive all audio frequencies with equal loudness. According to the ISO 226 equal-loudness contours (Fletcher-Munson curves), human hearing is naturally less sensitive at ultra-low bass and very high treble, especially in ears with mild sensorineural hearing dips.
Tinnora includes an optional Fit Sound to My Ears calibration procedure. Through gentle threshold beeps, the engine establishes a custom per-ear compensation profile so that your sound mix sounds perfectly balanced, warm, and natural across both ears.
Acoustic DSP Route Optimization
Tinnora automatically detects how you are listening and shapes the DSP output accordingly:
Headphones / Earbuds
Full dynamic range and high-frequency resolution. Preserves subtle spatial stereo panning and head-tracked scatter placement on supported devices.
Built-In Phone Speaker
Compensates for the small transducer acoustics. Gently rolls off sub-bass distortion below 120 Hz and enhances lower-mid warmth for bedside nightstands.
Bluetooth & Pillow Speakers
Tailored frequency curves to ensure ambient sound remains smooth and non-piercing when muffled under pillows or played across low-power room speakers.