File downloads

Downloads

In order to offer more background information on our products and IP, a number of articles, reports and white papers can be downloaded here. For downloads related to our Bedrock Audio products, please refer to the support section of the Bedrock website.

White papers

Speech Intelligibility Measurements in Practice - Bedrock Audio white paper

Books

Past, Present and Future of the Speech Transmission Index

The Intelligibility of Non-native Speech

Papers related to the STI

A novel procedure for direct-method measurement of the fullmatrix Speech Transmission Index (AES Convention NYC), 2017

Measuring the Speech Transmission Index of systems featuring digital voice coding (Reproduced Sound Birmingham), 2016

Designing an acoustic source of the STIPA signal: how to build a good talkbox (Reproduced Sound Birmingham), 2016

Self-optimizing PA systems(Reproduced Sound Manchester), 2013

Evolution of the STI (AES convention), 2011

Four decades of STI development (Reproduced Sound Brighton), 2011

Development of a binaural STI model (J. Acoust. Soc. Am.), 2008

Recent advances in STI measuring techniques, Institute of Acoustics workshop, 2006

Speech based STI measurements, 2005

Using the STI for predicting non-native speech intelligibility (J. Acoust. Soc. Am.), 2004

Effect of talker and speaking style on the STI (J. Acoust. Soc. Am.),2004

Intelligibility in traffic tunnels (Internoise), 2001

STI at high ambient sound levels (Eurospeech, Budapest), 1999

Ambient noise surveys

Ambient noise inside airport terminals: a detailed survey of the background noise at Amsterdam Airport Schiphol (Internoise), 2020

Papers related to (non-native) speech intelligibility

Prediction of speech intelligibility of PA systems in tunnels (Appl. Ac.), 2006

Quantifying intelligibility to non-native listeners (J. Acoust. Soc. Am.), 2002

Quantifying intelligibility of non-native talkers (J. Acoust. Soc. Am.), 2002

Phoneme and sentence intelligibility of non-native Dutch speech (Speech Comm.), 2001

Non-native speech intelligibility (MIST workshop), 1999

Development of test methods

Language dependency testing of vocoders (IEEE speech comm. workshop), 2002

A newly developed communicability test (IEEE speech comm. workshop), 2002

Methodology for cross-language speech communication (MSLP workshop Aalborg), 2001

Methodology for language dependency testing (Eurospeech Aalborg), 2001

Methods for testing communicability (Eurospeech Aalborg), 2001

Papers related to noise exposure and hearing protection

(Dutch) Actieve geluidonderdrukking in gehoorbeschermers, NAG, 2002

Balancing intelligibility and noise exposure, Aviation, Space & envir. Med., 2001

Development of a wireless Communications Earplug, AES Journal, 2000

Sound exposure and intelligibility in helicopters (Internoise Ford Lauderdale), 1999

Papers related to warning signals and sound beacons

Auditory evacuation beacons, AES Journal, 2005

Auditory marking of escape ways in smoke, 2005

Auditory warning signals in ship control centres, 2005

Other papers on acoustics

Suppression of chants at sports events (J.Acoust.Soc.Am.), 2007