Laryngograph® PROCESSOR:

Microphone: Omnidirectional (pressure sensitive) electret, +/- 2dB 100Hz to 10kHz noise level 26dB (SPLA), dynamic range 88dB
Laryngograph®: Gold plated electrodes in small, medium and large sizes
Output voltage range: 5V peak-to peak
Output impedance: 600 Ω
Bandwidth: +/- 1dB, 1Hz to 10kHz

Analog inputs: 4 channel, +/- 5V, 16-bit A to D, 90dB dynamic range
Sampling rate: 24, 16, 12kHz
Analog outputs: Speech and Lx waveforms, 16 bit D to A, speaker or headphone
compatible
PC Interface: USB 2.0

• record speech and Laryngograph® and optionally up to two more waveforms to hard disk
• real time display of waveforms, fundamental frequency (Fx), amplitude (Ax), frication, contact quotient (Qx), spectrogram and LPC spectrum
• high quality playback
• display of fundamental frequency (Fx) and/or closed quotient (Qx)
• pattern display combining Fx, amplitude (Ax), frication and optionally nasality
• realtime acoustic spectrogram with narrowband (40Hz) or broadband (200Hz) resolution
• realtime display of formants via LPC spectrum
• Sustained vowel analysis
  – Minimum, maximum, average and SD for Fx and Qx
  – Jitter (%)
  – Shimmer (% and dB)
  – HNR (harmonic to noise ratio)
  – NNE (normalised noise equivalent)
  – RAP (relative amplitude perturbation)
• Connected speech analysis (QA)
  – First and second order frequency distribution (DFx1 and 2)
  – Pitch crossplot (CFx) with irregularity score (%)
  – First and second order closed quotient distribution (DQx1 and 2)
  – Closed quotient crossplot (CQx) with irregularity score (%)
  – First and second order amplitude quotient distribution (DAx1 and 2)
  – Amplitude crossplot (CAx) with irregularity score (%)
  – Speech pattern elements – time spent in voice, non voice, friction and
     nasalance (with optional Nasality Processor) (%)
– Dynamic phonetogram – Ax vs Fx, first and second order
– Qx vs Fx, first and second order
– Statistics