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EDA offers an "effects package"
consisting of one or more of the following algorithms. All of these
algorithms are xDAIS compliant.
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Reverb
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xDAIS
compliant reverberation algorithm
- Fixed point, hand optimized for version TI
C55x.
- Supports multiple sample rates up to 48kHz.
- 32 bit internal processing & variable
dithering depth.
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Flange
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xDAIS
compliant flange algorithm
- Fixed point, hand optimized for version TI
C55x.
- Supports multiple sample rates up to 48kHz.
- 32 bit internal processing & variable
dithering depth.
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Chorus
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xDAIS
compliant chorus algorithm
- Fixed point, hand optimized for version TI
C55x.
- Supports multiple sample rates up to 48kHz.
- 32 bit internal processing & variable
dithering depth.
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Echo
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xDAIS
compliant echo algorithm
- Fixed point, hand optimized for version TI
C55x.
- Supports multiple sample rates up to 48kHz.
- 32 bit internal processing & variable
dithering depth.
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Sound Enhancement
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- Fixed point, hand optimized for version TI
C55x.
- Spectral enhancement algorithm.
- For band limited audio signals.
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10 band EQ
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- Fixed point, hand optimized for version TI
C55x.
- 32 bit internal processing & variable
dithering depth.
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* Contact EDA for information for
porting to other platforms.
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Call Progress
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- Filter approach for detecting energy in target
frequency bands
- Signal-energy approach combined with cadencing
for both US and European standards
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DTMF
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- Modified Goetzel filter application
- 16 bit fixed point DSP with 13 bit codec,
supervisory processing in an 8 bit microprocessor
- Pseudo-fractional filter coefficients permit
up to 10dB improved detection over normal results for same possible
SNR
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Caller ID - CAS Tone Detection
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- BellCore spec equivalent - Type I and II
- 16 bit fixed point DSP with 13 bit codec,
supervisory processing in an 8 bit microprocessor
- Tested against BellCore test talkoff/talkdown
samples
- A simpler version that comes within 3% of full
BellCore spec is available
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Caller ID - FSK Demodulation
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- BellCore spec compliant FSK decoding for both
Type I and II
- Decoding uses proprietary filter bank for
detecting signal component shift and storing caller ID information
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Echo Canceller
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xDAIS
compliant echo algorithm
- Fast robust version of proportional affine
projection algorithm (FAP).
- Superior convergence characteristics and echo
suppression than conventional NLMS algorithm with minimal
computational overhead.
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Hardware System Design Experience
- Digital
Audio
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Line of Digital Audio Adapter PC Sound Cards
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Description:
Provides hi fidelity direct-to-disk, multiple-channel record and
playback. Various design implementations on TI DSP platform,
including ability to synchronize with outside video and audio sources and
support for ISA, EISA, Microchannel, PCI and PCMCIA buses.
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| Technology:
TMS320C31, Dolby AC-2, ADPCM, 16 bit PCM, DVI
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| Availability:
All related IP for line of adapter cards & customized designs
available for recycling to new designs for customer applications.
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Image Filter Board
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Description:
A stand-alone image processing board used in medical imaging systems.
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| Technology:
ADSP21065L-SHARC, Sumitomo IP90C26 Spatial Filter, Altera FPGA, Lucent
BDP1A16G Driver
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| Availability:
Design may be modified for sophisticated real time image processing.
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Digital Line Scan Camera
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Description:
Digital linescan camera with video output with resolutions of 512, 1024,
or 2048 pixels and data rates of up to 20 or 40 MHz with provision for
exceptional noise immunity.
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| Technology:
PIC16F876, TK11250, adjustable gain, Frame Grabber
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| Availability:
Proprietary design.
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Analog Line Scan Camera
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Description:
Features a single channel differential analog video output format, with a
resolution of 1024 pixels, which can achieve data rates of up to 5 MHz and
line rates to 4.7 kHz with exceptional noise immunity.
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| Technology:
OP279, 3D7205Z-30, DS26C31TM, EPM7032S/FP, DG642, DS26C32ATM, SHC615,
RL1024P, NJM79L05UA, SHC605, MAX626CSA
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| Availability:
Proprietary design.
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VoIP Reference Design
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Description:
IP/Ethernet Phone demo board.
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| Technology:
NET+ARM (NetSilicon platform), 1/4 VGA LCD display, Touch Screen
operation, high quality audio, simultaneous voice and data.
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| Availability:
Available as reference design to adapt to customer requirements and
features, including all IP needed to implement applications.
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Combo Caller ID & DTAD Board
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Description:
Analog Telephone Module with Caller ID.
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| Technology:
This module contains the electronics and an LCD display and may be
incorporated into plastics to provide a standalone analog telephone with
Caller ID type I and type II. The electronics module is based on
surface mount passive and active devices and on a single 2 layer circuit
board. The power supply is based on a wall mounted transformer.
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| Availability:
Complete EDA design available for manufacturing or adaptation to customer
specification as well as upgrading of current specification.
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