By Dr Colin Mercer, Technical Director, Prosig
The “standard” centre frequencies for 1/3 Octaves are based upon the Preferred Numbers. These date from around 1965. They are not specific to third octaves. The only reference we have is to British Standard BS2045:1965 Preferred Numbers. There are probably equivalent ISO and ANSI versions. read »»»
By Dr Colin Mercer, Technical Director, Prosig
The Articulation Index or AI gives a measure of the intelligibility of hearing speech in a given noise environment. The metric was originally developed in 1949 in order to give a single value that categorised the speech intelligibility of a communication system. The basic interpretation of the AI value is the higher the value then the easier it is to hear the spoken word. The AI value is expressed either as a factor in the range zero to unity or as a percentage. read »»»
| Product Catalog |
 Click to get your copy |
| Solutions CD |
 Click for free disk |
| P8000 Series |
 Up to 1024 channels Up to 400k samples / second / channel 24-bit analog input USB 2.0 102dB dynamic range -120dB noise floor CAN/GPS Thermocouple & strain gage conditioning Analog output High speed tacho processing Full signal conditioning Comprehensive application software |
| DATS Software |
Prosig's DATS signal processing software has a number of special add-on application packages. Use the links below to have a look. NVH Analysis Rotating Machinery Analysis Modal Analysis Structural Animation Fatigue & Durability Analysis Audio Replay & Synthesis Hammer Impact Analysis Multiplane Balancing Flight Test Software Noise Path Analysis Human Response Biodynamics Acoustics Package Time-Frequency Analysis Sound Mapping Software Crash Biomechanics |
Powered by WordPress