Acoustic Echo Cancellation Software

The acoustic echo cancellation software product provides superior voice clarity and true full-duplex performance under a wide set of challenging acoustic environments. It is capable of eliminating the acoustic echo in difficult conditions such as unbalanced speech levels, close speaker to mic proximity, indoor/outdoor environments, background noise, reflective room surface, double talk, and echo path changes.

Dec 4, 2017 - You may need noise cancellation software for various reasons such as. Noise cancellation, acoustic echo cancellation, light beam forming,.

Adaptive Digital’s HD AEC acoustic echo cancellation technology can be found in a wide range of applications, like IP Intercom Systems, Conference Speakerphones for both large and small conference rooms/huddle rooms, IP Desk Phones, Mobile Handsets, Radio over IP, and essentially anywhere where voice quality is affected by adverse room conditions. Additionally, the HD AEC acoustic echo canceller is effective in improving the performance of speech recognition algorithms when operating in an echoic environments. • True full-duplex operation under a wide dynamic range of audio levels, even when microphone input signal is weak • Programmable sampling rate, supporting narrowband (8 kHz), wideband (16 kHz), super-wideband (32 kHz), and full-band (44.1, 48 kHz) • Improved adaptive nonlinear processor • Handles echo tails of up to 500 msec. And greater, with true full-duplex cancellation.

• Spectrally representative comfort noise generator • Automatically adjusts for unknown bulk (buffering/audio driver) delay • Able to handle strong echo (speaker to microphone gains up to 20 dB). HD AEC ARM Cortex-A8/A9/A15/A17 CPU Utilization & Memory Requirements All Memory usage is given in units of byte.

HD AEC ARM Cortex-M4 CPU Utilization & Memory Requirements All Memory usage is given in units of byte. Platform Sampling Rate Tail Length (msec) MIPS*per Mic Per Channel Memory Cortex-M4 8 kHz 32 44 47k 64 47 50k 128 50 57k 256 56 65k 512 82 96k Cortex-M4 16 kHz 32 88 50k 64 94 57k 128 107 65k 256 132 96k 512 233 147k Cortex-M4 32 kHz 32 131 55k 64 139 62k 128 142 70k 256 180 101k 512 250 152k * with Anti-howling Note: HD AEC Cortex-M4 MIPS generated with 0 wait state FLASH. Specifications measured on TI Tiva C series ARM Cortex-M4 based MCU. HD AEC ARM C674x CPU Utilization & Memory Requirements All Memory usage is given in units of byte. Platform Sampling Rate Tail Length (msec) MIPS* per Mic Per Channel Memory C674x 8 kHz 32 19 25k 64 20 34k 128 21 55k 256 22 110k 320 24 143k 400 62 160k C674x 16 kHz 32 33 45k 64 34 61k 128 36 96k 256 38 180k 320 43 223k 400 48 250k C674x 32 kHz 32 65 56k 64 67 86k 128 71 157k 256 77 350k 320 81 470k 400 85 470k C674x 48 kHz 32 78 68k 64 103 114k 128 111 234k 256 125 584k 320 133 814k 400 141 1100k * with Anti-howling Note: MIPS generated with single mic enabled, and running with on chip (internal) program and data memory only.

When using external source for program and data memory, MIPS increase by 3x per enabled microphone. HD AEC ARM C64x / C64x+ CPU Utilization & Memory Requirements All Memory usage is given in units of byte. Platform Sampling Rate Tail Length (msec) MIPS* per Mic Per Channel Memory C64x / C64x+ 8 kHz 32 22 30k 64 27 45k 128 35 81k 256 51 179k 320 57 240k 400 63 300k C64x / C64x+ 16 kHz 32 43 54k 64 51 80k 128 67 140k 256 101 282k 320 119 365k 400 150 450k C64x / C64x+ 32 kHz 32 85 75k 64 103 128k 128 136 259k 256 204 620k 320 238 847k 400 300 1000k C64x / C64x+ 48 kHz 32 110 99k 64 132 185k 128 188 410k 256 290 1085k 320 — — 400 342 1534k * with Anti-howling Note: MIPS generated with single mic enabled, and running with on chip (internal) program and data memory only. When using external source for program and data memory, MIPS increase by 3x per enabled microphone. HD AEC ARM C55x CPU Utilization & Memory Requirements All Memory usage is given in units of byte.

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