Telephony by Adaptive Digital

ACOUSTIC BEAMFORMER

Acoustic Beamformer C54x

The Adaptive Digital Acoustic Beamformer improves the signal to noise ratio of speech signals by coherently summing signals obtained from a linearly-spaced microphone array. Applications include speech recognition, acoustic echo cancellation, and automotive “hands-free” audio input systems.

Data sheet:.pdf

FEATURES

  1. Scalable number of microphones from 2 to 8
  2. Supports fixed-angle or dynamic array steering
  3. C callable
  4. Designed for half-wave microphone separation

AVAILABILITY

ADT Acoustic Beamformer is available on the TMS320C5000™ DSP Platform

C54x™DSP Generation

SPECIFICATIONS

ACOUSTIC BEAMFORMER C54x

Memory and MIPS data were recorded with an input frame size of 160 samples at an 8kHz-sampling rate.

All Memory usage is given in units of 16-bit word.

Variant
MIPs (Peak)
Program Memory
Data Memory
SNR improvement
2 Microphones
19.8
1948
4061
3.1 dB
4 Microphones
39.7
1967
6187
6.2 dB

Last update: 12/26/2002

beamform_ADT_init(…) Performs Beamforming initialization function

beamform_ADT_run(…) Performs Beamforming function

PRODUCTS