Production testing for electro-acoustic devices
Highest performance audio analyzer in the world
Only 24-bit, 1 MHz, 1 million point FFTs in the world
The fastest production test audio analyzer in the world
Only HDMI audio analyzer in the worldThe Audio Precision collection of Technotes, Knowledge Base articles and Whitepapers is an indispensable audio resource.
UNMATCHED AUDIO ANALYZER PERFORMANCE
AP audio analyzers provide more connectivity options with higher performance specifications than any other analyzer in the world. Every interface option is fully integrated into our software, eliminating uncertainty and inconvenience for faster test setup, unique measurement views and results trusted everywhere.
Audio Precision is the recognized standard in audio test.
AP News and Events
Subscribe to Audio.TST- APx500 v3.3.1 Released / June 2013
APx500 v3.3.1 brings new acoustic tests, support for POLQA perceptual audio test, increased flexibility for analog connections, new FFT lengths and results. Recommended for all APx users.
- New Acoustic Tests / May 2013
New APx Acoustic Tests provide Rub & Buzz for drivers and Modulated Noise Air Leak detection for enclosures. Integrate acoustic tests directly in APx sequences for complete, rapid production testing.
- POLQA Perceptual Audio Test / May 2013
APx now supports both POLQA and PESQ perceptual audio tests for speech quality. POLQA supports ear and mouth simulators, super wide-band speech, and improved results accuracy.
Technical Library
How to Write (and Read) Audio Specifications
An indispensible guide to creating and understanding proper audio specifications, with real-world examples.
Measuring Switch-mode Power AmplifiersSwitching frequencies in Class D amplifiers can produce misleading results unless effective measures are taken to prevent them.
Measuring Power Supply Rejection RatiosTwo different methods to measure PSRR are described and compared. Instructions for using the APx PSRR Measurement Utility are provided.
Testing Smartphones and TabletsSmartphones and tablets contain many audio paths, including headphones, speakers, HDMI and Bluetooth. For speech, perceptual tests such as PESQ are required. This article shows how all of these can be measured with APx analyzers.
Measuring PDM Microphones and InputsPulse Density Modulation (PDM) is widely used in digital MEMS microphones. This article demonstrates direct measurement and analysis of the PDM audio and datastream using APx analyzers.
APx Digital Interfaces
In addition to high performance analog I/O and standard AES/EBU, APx audio analyzers support a wide variety of digital options.
Bluetooth®
Bluetooth option with built-in radio and support for A2DP, HFP, AVRCP profiles and SBC, CVSD and aptX codecs.
Direct connection at chip level. I2S and up to 16 channels of TDM with support for left justified, right justified, and DSP formats.
Direct I/O with modulation and decimation of PDM audio for testing of MEMS microphones, with a wide range of oversampling rates.
Measure HDMI audio quality and audio format compatibility on set-top boxes, home theater receivers, HDTVs, smartphones and Blu-ray Disc™ players.
Make direct measurements of high quality and professional PC audio interfaces with APx500's built-in direct ASIO connectivity.
Software Downloads & Demos
AP measurement software can be run without an analyzer in Demo Mode for evaluation, training or offline test editing.
APx500 control software for the APx audio analyzers. APx500 is the most advanced and intuitive audio measurement software in the world.
AP2700 control software for the 2700 Series audio analyzers. Supports Windows 7 64-bit and connects via USB with the APIB-USB interface.
For a complete demonstration of how AP can help you in your work, click the link above. Your local AP Sales Partner will contact you.