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Engineering Insights

Audiological Technology & Acoustic Research

Peer-reviewed educational whitepapers on on-chip AI neural networks, low-latency audio transmission, psychoacoustics, and tinnitus management.

Deep neural networks in hearing aid chips
Artificial Intelligence • 8 min read

Deep Neural Networks (DNN) in Modern Hearing Aids

Traditional DSP filters rely on hardcoded acoustic thresholds. Modern DNN co-processors analyze 500+ independent frequency channels simultaneously, comparing sound against 12 million real-world audio scenes to prioritize speech phonemes while damping background din.

Topic: Machine Learning • Acoustic Classification
Bluetooth LE Audio Auracast broadcast
Wireless Standards • 6 min read

Bluetooth LE Audio & Auracast Broadcast Revolution

Replacing legacy telecoil induction loops, Auracast enables direct broadcast streaming to an unlimited number of hearing aids in public venues, airports, conference halls, and theaters with sub-20ms latency and high-fidelity LC3 codec audio.

Topic: Bluetooth 5.4 • Public Assistive Listening
Audiogram interpretation air and bone conduction
Diagnostic Audiometry • 10 min read

How to Read and Interpret Your Audiogram

Understanding the critical differences between Air Conduction (headphones) and Bone Conduction (mastoid oscillator) thresholds. Learn how the speech banana reveals why missing high frequencies (/s/, /f/, /th/) destroys word clarity.

Topic: Pure-Tone Audiometry • Speech Banana
Tinnitus sound therapy and notch acoustic filtering
Tinnitus Support • 7 min read

Tinnitus Sound Therapy & Acoustic Notch Filtering

Explores how neural reorganization in the auditory cortex creates phantom tinnitus perceptions, and how digital hearing aids use wideband ocean sound generators, fractal tones, and notch filtering to promote neuroplastic habituation.

Topic: Psychoacoustics • Habituation Protocols

Audiological Terminology Quick Glossary

Real-Ear Measurement (REM)

Probe microphone placed inside the ear canal to verify that acoustic output matches the patient's prescriptive target (NAL-NL2 or DSL v5).

Occlusion Effect

The sensation of one's own voice sounding boomy or hollow, caused by bone-conducted vibrations trapped in an acoustically sealed ear canal.

Frequency Lowering / Transposition

Algorithm shifting inaudible high-frequency consonant cues into lower, healthier acoustic octaves where the patient retains functional hearing.

Sound Pressure Level (dB SPL)

Physical acoustic measurement of sound pressure relative to the human auditory threshold of 20 micropascals.

Telecoil (T-Coil)

A tiny copper induction coil that detects electromagnetic audio signals from compatible telephones and looped auditorium venues.

Speech Reception Threshold (SRT)

The minimum decibel level at which a listener can accurately recognize and repeat 50% of two-syllable spondee words.