Algorithm & Scientific Development 

Telephony / Speech

·  Voice compression (vocoding) (ACELP, MBE, ITU G.7xx codec standards)

·  Signalling, DTMF, echo cancellation

·  Coding PCM, ADPCM, ULaw, ALaw

·  AT&T/Bell Modems: 103, 108, 113, 201, 202, 208, 212A

·  CCITT/ITU Modem Standards:

·         T2 (G1 Fax), T3 (G2 Fax), T4 (G3 Fax), R.35, V.2, V.8, V.8bis,

·         V.17, V.21, V.22. V.22bis, V.23, V.24, V.25, V.26, V.26bis,

·         V.27, V.27ter, V.28, V.29, V.32, V.32bis, V.33, V.34, V.35,

·         V.42, V.42bis, V.90

·  STU III demodulation/modulation (re-modulation, or data pump)

·  Isolated word/digit Speech Recognition

·  Keyword Spotting

·  Speaker Identification / Voice Print Analysis

·  Voice detection (Speech/Non-Speech, Voice/Non-Voice)

·  Speech Enhancement (noisy or RF environment)

·         Noise elimination from RF background noise

·         USB/LSB determination, frequency correction

·         AM-DSB and ISB-SC speech channel separation

·         Filtering / Pitch change

·  Implementation of speech recognition systems such as digit, word, or large vocabulary continuous speech recognition (LVCSR) systems, on your target(s):

·         HTK, OGI, Sphynx, or other licensed system as a starting point

·  Testing of isolated word or LVCSR systems against speech corpora

Geographic Plotting / Graph Theory / Spatial Transformations and Analysis

·  Spatial and geographic transformation / analysis. 

·  Plotting data on Cartesian or other projection systems

·  Time, Position, Velocity, Acceleration, Pitch/Roll/Yaw compensation and Kalman filtering, IMU processing, and orbital calculations for moving objects

·  Computed solutions of directed graph problems using Dijkstra and other greedy algorithms

Communications

• Signal Demodulation (Bell, ITU V.xx, TDMA, CDMA)
• Signal Modulation synthesis of ASK, FSK, PSK, MSK, QAM
• Frequency Hopping (FH) Radios (voice and data signals)
• Signal Exploitation (detection, recognition, deconvolution, compression/expansion, demodulation, decode, re-transmission, parametric reduction)
• Voice: SSB/USB/LSB/DSB detection/demodulation
• Satellite Transponder Signal Analysis (Inmarsat, Intelsat, VSATs, etc.)

Waveform Synthesis

·  Communications signals, generation, mixing, creation of complex synthetic environments

·  Audio or IF test waveforms

·  Digital modulation synthesis

·  RADAR signal synthesis

·  other signals (you specify)

RADAR

·  Digitization/parameter measurement and processing, de-interleaving, and display of parametric pulse data

·  Ground Penetrating Radar (ground scatter, returns processing, visualization)

·  Synthetic Aperture Radar (image post processing)

·  Analysis of RADAR pulse returns

·  Conversion of RADAR pulse data into different formats

RF & System Design Knowledge

·  Ionospheric Propagation, Multipath and Doppler effects, Interference Effects/Mitigation,

·  Multi-Hop satellite communications, forward error correction to ensure accuracy even in high bit-error- rate (BER) environments

·  Environments: IF, HF/VHF/UHF, SHF/EHF

·  Design of RF tuners, downconverters, and other custom RF hardware

·  Design of RF, IF, and Baseband analog/digital hardware

·  Spectral-domain digital signal processing

Acoustics

·  Sonar

·  SCUBA audio compensation

·  Time-Gated Spectrometry (for acoustic device/transducer, such as loudspeaker, testing)

·  Bio-rejection (Sonar biologic detection and processing)

Image & Video Processing

·  Transforms, filtering, histogramming, equalization, object detection/rotation/acquisition, image/face recognition, aliasing, altering RGB, 8/24 bit color, enhancement, blurring, stream codecs (H.261/H.264, AVI, JPEG extraction, MPEG2, MPEG3, MPEG4, MKV, cell phone video conversion)

·  Compression (MPEG1, MPEG2, RLE, GNU gzip, compress)

·  MPEG and H.xxx format conversions and real-time analysis 

·  Graphics display compression/decompression algorithms for real-time compression of image data stream)

Cryptography & Compression

·  Incorporation of Compression Algorithms into your systems:

·  encrypt/decrypt (crypt)

·  Huffman encoding / analysis

·  Sub-optimal blockwise reordering and compression (smart reformatting for maximum compressibility)

·  Block-floating point for signal data stream compression

·  RLE, JPEG, MPEG

·  Using GNU zip (gzip/gunzip) as a compression engine within your application

·  DES, PGP, public key encryption/decryption

·  Application of compression algorithms to your unique data or communications link bandwidth problem

·  Example:  Forwarding of display data at a human rate over a constrained data link and reproducing it at the other end of the link, virtual human real-time analysis displays.

·  Stegonographic analysis (Stegonography)

·  Wavelet Analysis

Audio

·  Design of digital/analog electronic crossovers,

·  Audio special effects (e.g., reverb, filtering, fading, etc.), noise reduction

·  MP3 and G7xx audio compression standards

·  Conversions between audio formats

·  Noise Reduction

·  Speech Enhancement

·  Real-Time Spectrographic Analysis

Classification

·  Application of Specific Classifiers to your problem

·  Tree, Neural Net, GMM, MVG, LMS, etc.

·  Identification and development of pre-processing features

·  Feature space evaluation

·  Automatic confusion matrix generation