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Home :: System Integration :: Acoustic/Audio :: Acoustic/Audio Processing


Acoustic/Audio Analysis Software

The combination of Hypersignal®-Acoustic  software allows a wide range of acoustic/audio analysis functions, displays, and instruments.


  • MLS stimulus & response; up to 3 sec impulse response measurement at 44.1 kHz

  • arbitrary stimulus and response using user-defined stimulus waveforms

  • Equalization from measured input or from waveform file input (including SYSid or TEF20 ASCII input files)

  • Distortion measurement

  • Very Long FFT and Convolution (up to 131,072 pts.)

  • minimum phase calculation from arbitrary impulse response

  • Schroeder integration and RTnn estimation

  • user-defined types of stimulus & response (simultaneous record/playback)

  • Difference equations, with standard nomenclature

  • digital filter design and implementation, including both classical and arbitrary FIR and IIR filter types

  • .WAV file or .TIM file input in all functions

Waveform Display

  • 256-color contour display (2-D spectrograph)

  • reverse-time waterfall display

  • magnitude and unwrapped phase display

  • Log/linear amplitude time domain display, with cut-paste and rubberband (point-mode) editing


  • Real-time spectrum analyzer, with 1/N octave band display, transfer function measurement, impulse response measurement, dual-trace or overlaid comparison with captured waveform file, real-time digital filtering (see Hypersignal-Macro software description for more information)

  • Continuous D/A output signal generator with pre-defined sine-, square-, triangle-, and pulse-waveform types, plus arbitrary waveform output

  • Continuous disk record at 11.025, 22.05, and 44.1 kHz, one- or two-channel "snap-in" real-time filter option

  • Continuous disk playback, real-time filter option

  • Strip-Chart recorder

  • Digital Tape recorder

Example Hardware Options

  • low-cost (USD 349) Sig56-2 board with 92 dB typical 2-channel analog I/O, 40 MHz DSP56001, and 32k x 24 3-wait SRAM

  • National Instruments AT-DSP2200 board, with 2-channel sigma-delta analog I/O, 92 dB typical, 384k x 32 zero-wait SRAM

  • 8-chan input, 8-chan output sigma-delta Sig32C-8 board with 82 dB typical dynamic range, 80 MHz DSP32C, 128k x 32 zero-wait SRAM, expansion 512k x 32 3-wait SRAM, interboard sampling, and interboard communication bus