Audio Enhancement
Audio Enhancement Package

Products  / Audio Enhancement   / Audio Enhancement Package

Audio Enhancement Package







The Audio Enhancement Package (AEP) is a set of digital signal processing technologies that enhance the listening experience in music, improve intelligibility in streamed content, adjust playback depending on ambient noise, and correct loudspeaker response. Any audio device is a suitable candidate for the integration of AEP.

The hallmark of AEP is the highest possible playback quality in a variety of acoustic environments, achieved with low MIPS and memory resources. It is easy to integrate and configure with specific technologies for the intended application, according to the project's requirements. AEP is equipped with a unique set of auxiliary software tools to facilitate development, debugging, test acoustic tuning, and problem identification/reporting.


Block Diagram





AEP Components


SonicVibrance enriches the audio experience by addressing the inherent drawbacks and limitations of a given listening environment by dynamically enhancing perceived audio quality. Its unique capabilities allow for flexible adjustments to the stereo image, balancing of the frequency response, and refined addition of bass without overloading the speakers. The result is undistorted, natural sound.

  Automatic Volume & Equalization (AVQ)  

AVQ modifies the loudspeaker signal according to the level and spectrum of ambient noise, ensuring perceptually equal loudness and intelligibility under dynamically changing conditions (street, bus, train, etc.). AVQ receives a noise estimation signal originating from the microphone that picks up the ambient acoustic noise.

  Multi-Channel Dynamic Range Processor (MDRP)  

MDRP provides dynamic range processing for both the individual frequency sub-bands and for the audio signal over the entire frequency range. MDRP is the key component of digital signal processing for hearing loss compensation used in hearing assistance and hearing enhancement. MDRP is also an important component of loudspeaker correction related adjustments.


VoiceFirst technology improves speech intelligibility in movies, shows, and sporting events by suppressing background noise, audio effects, and music. VoiceFirst not only improves dialogue intelligibility, but also reduces user fatigue caused by excessive sound effects, making video content more enjoyable.

  EasyListen™ (EL)   EasyListen is a real-time technology that dynamically slows down incoming speech so that it becomes natural and intelligible. EasyListen is language independent and works equally well with Western and Eastern tonal languages.





Technical information




Up to 16 audio processing channels

Microphone channel (for AVQ noise estimation only)

Up to 16 AEC-reference channels


Supported sampling rates


8kHz, 16kHz, 24kHz, 32kHz, 48kHz

  Frame size  

Flexible processing frame size, typically 8 ms

  Processing arithmetic  

Fixed point, floating-point

  Algorithmic latency  

24 ms (standard), 12 ms (low-delay), 6 ms (super-low-delay)

  Input sample format  

PCM 16 bit or 32 bit


Audio processing modes


Mono, Stereo, Binaural

  MDRP channels  

0 (full band) to 16 with customizable central frequencies (0-7.9 kHz), 6 knee-point curves per channel

  Echo canceller  

High-resolution acoustic echo cancelling (up to 31.5 Hz per band)

Fast convergence (< 300ms) with no initial echo

Converges in high noise and fast changing acoustic echo path.

  Auxiliary DSP blocks  

Mic and AECref DC removal, per-input gains

  High-Res EQ   Flexible EQ using narrow bands with 33Hz bandwidth allowing for precise loudspeaker frequency response fine tuning.



AEP is available on the following platforms:

  • ARM cores – all types including ARM Cortex A- and M-series
  • Cadence (Tensilica) - HiFi2, HiFi3/4/5 (Knowles IA8201, NXP RT600, etc.)
  • CEVA X2





Sources of audio signals including mobile phones, TWS and headphones, automotive audio systems, Bluetooth speakers, PC/tablets, and television.



Top ▲