Name

Description of current firmware IPs on sale

THDN

Matlab program, computation of THDN of audio files (WAV, RAW, PDM). CCIR and A-weighting, compensation for distortions and jitter effects. 

This tool was calibrated on several audio devices with their manufacturer’s R&D teams.

BIQUAD

Assembly code programs for ARM-Cortex-M0, M4, M7, NEON, Coolflux. Using CMSIS APIs with fixed-point arithmetics with increased performances.

Advanced SIMD NEON code written in assembly codes for ARMv8 Aarch64 and Aarch32. Super high-speed floating-point 32bits at less than 4 cycles per sample.

SSRC x2 x3 x6

Low-latency sample-rate converter for Cortex-M4 and Coolflux. Low-latency optimised for speech communication devices and conformance to 3GPP/ITU standards.

ARBITRARY Synchronous SRC

Arbitrary sample-rate converter in range 1/16 … x16. The code is using 16bits arithmetics on Cortex-M, or float 32bits with NEON.

ASRC

Extreme low complexity Asynchronous Sample-Rate Converter optimised for drifts compensations in +/- 5000ppm. Code optimised for Cortex-M series. 

DRC1

Low-complexity single-band audio compressor. Tunable attack and decay. Complexity number of 2 multiply + 1 add per sample. Guarantee of no clipping, by construction.

PDM 

Pulse-density CIC decimator. OSR 32/64. 4th and 5th order. 

We can customize it for other OSR filter order.

Modulator using delta-sigma modulation. 3rd, 4th and 5th order CRFB.

AEC

PSTN Line echo canceller. Coded in C with 32bits arithmetics.

In development. To be accelerated upon customer request

FVAD

Far-field sound and voice detection for Cortex-M3.

BEAM

Two-MICs direction detection for Cortex-M0, alarm and robot/game use-cases

TASR

Phonetic and prosody recognizer for Cortex-M0 and M3 

HAID

Hearing-aid application for smart-phones

VXCH

Voice changer for secure phone communications