Audio Precision

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Audio Precision Articles

Displaying 1 - 20 of 35
Test & Measurement
14th April 2022
Smart speaker acoustic measurements

Smart speakers are a relatively new class of consumer audio device with unique characteristics that make testing their audio performance difficult. In this application note, Joe Begin, Director of Applications & Technical Support at Audio Precision provides an overview of smart speaker acoustic measurements with a focus on frequency response – the most important objective measurement of a device’s audio quality.

Test & Measurement
1st June 2021
Software upgrade enhances rub and buzz defect detection

The latest update to its APx500 audio measurement software, version 6.1 has been released by Audio Precision (AP). It aids rub and buzz defect detection.

Test & Measurement
20th November 2020
Acoustic analyser tests speakers, microphones

The APx517B acoustic analyser from Audio Precision is specifically designed, configured and built for the production-line testing of speakers, microphones, headphones, headsets and consumer electronics incorporating speakers and microphones.  

Test & Measurement
11th June 2020
Audio measurement software cuts test time

Audio Precision’s latest update to APx500 audio measurement software, version 6.0, supports multiple simultaneous input types, enabling the concurrent measurement of up to 16 channels of digital and 8 channels of analogue audio data.

Test & Measurement
5th November 2019
Module expands channel count for PDM measurement

Audio Precision has the PDM 16 module for the APx500 Series audio analysers. The new module offers simultaneous acquisition and measurement of up to 16 channels of PDM signals, making it the highest channel-count solution available for MEMS microphone and MEMS mic array testing.

Test & Measurement
1st October 2019
Measurement software delivered to 3rd party audio interfaces

An audio analyser that enables the use of APx audio measurement software with ASIO-capable third-party audio interfaces or sound cards has been released by Audio Precision. With the introduction of APx500 Flex, manufacturers can cost-effectively deploy the measurement capabilities, flexibility and quality of APx software to their production lines.

Test & Measurement
18th December 2018
Audio analyser upgraded with multiple features

Improved sine generator frequency stability, lower system residual distortion, single-ended, balanced analogue output and an optional ADC test mode which provides VBias, a common mode DC Bias are features of the APx555 B Series analyser from Audio Precision. It is part of their B Series APx audio analysers.

Test & Measurement
22nd May 2018
Enhanced software developed to test smart devices

The 144th International AES Convention will be the platform for the upcoming release of Audio Precision’s APx audio measurement software version 4.6.This latest edition of the test software will offer the ability to perform measurements using the log-swept sine chirp—such as acoustic response—in an open-loop configuration, an enhancement ideally suited to the test and evaluation of smart devices (e.g., smart speakers, smartphone...

Test & Measurement
28th March 2018
Audio test software features speech intelligibility measurement

Audio Precision announced the addition of a new speech intelligibility measurement option for APx500 audio test software based upon the ABC-MRT speech processing algorithm. Measuring speech intelligibility is an important capability for engineers designing and validating a wide range of communication systems, products and components, especially those related to public safety (e.g., police, fire, emergency) where intelligibility is critically impo...

14th March 2018
Precision, convenience combine in microphone system

The 376M03, a calibrated microphone system combining a 0.5in microphone cartridge with a phantom-powered preamplifier – the 426M16 – in its configuration has been added to Audio Precision’s line of measurement microphones. The preamplifier combines the precision of calibrated, standardised measurement microphones with ubiquitous mic accessories offering phantom power, balanced connections for improved immunity to induced noise, ...

Test & Measurement
14th December 2017
Duo collaborate to offer A2B audio test

A multichannel audio performance testing of A2B systems and components has been announced by Audio Precision, in collaboration with Mentor. A2B (Automotive Audio Bus) is the digital audio bus technology developed by Analog Devices to deliver high-quality audio over an unshielded, twisted-pair wire.

Mixed Signal/Analog
7th September 2017
VAudio precision demonstrates A2B audio test concept

Audio Precision has announced a technology demonstration of multichannel audio bus testing at the upcoming AES 2017 International Conference on Automotive Audio. Conducted in cooperation with Mentor Automotive, the test scenario will centre on the digital audio bus technology developed by Analog Devices, Automotive Audio Bus (A2B), and the concept system will incorporate AP’s eight-channel APx585 audio analyser and Mentor’s A2B A...

Test & Measurement
19th September 2016
Analysers paired to streamline SoundWave audio test

 A collaboration between Audio Precision and LnK will address the SoundWire audio test needs of MIPI Alliance member companies by Combining an APx Series audio analyser with LnK’s protocol analyser creates a closed-loop measurement system for the real-time evaluation of chipset and mobile product designs incorporating MIPI’s SoundWire interface.

Test & Measurement
31st August 2016
Trio of plug-ins enhance measurement software

A trio of new measurement plugins have been introduced for Audio Precision’s intuitive and versatile APx audio test software. Each plugin integrates directly with APx software (version 4.3 or later) and adds new capabilities while allowing users to take advantage of built-in APx features such as limits, sequencer control, derived results and reporting.

3rd August 2016
Android audio test app speeds smartphone evaluation

The latest version of Audio Precision’s Android audio test app comes with support for Android versions 4, 5 and 6 (as well as Android N Developer Preview 5). The app allows fast, automated evaluation of new phones and tablets, including hands-free Bluetooth audio test without requiring the initiation of a phone call, saving developers’ time and ensuring that measurement results aren’t impacted by network performance.

Test & Measurement
31st May 2016
Low noise accessory enhances electro-acoustic test

The APx1701 Transducer Test Interface has been introduced by Audio Precision. The system integrates instrument-grade amplifiers and microphone power supplies for designers and production test engineers seeking clear insight into the behaviour of their electro-acoustic devices. With a signal-to-noise ratio of 134dB, the APx1701 provides 20dB of fixed-gain amplification from DC to 100kHz

Test & Measurement
29th October 2015
STI plug-in enhances audio test software

A Speech Transmission Index (STI) plug-in for Audio Precision’s APx500 audio test software has been released. Created for engineers developing public safety (police, fire, emergency) communications and public address systems, as well as flight recorder devices, the APx STI plug-in provides measurement capabilities conforming to international standard IEC 60268-16 (2011).

Test & Measurement
14th October 2015
Software enhances electro-acoustic and PDM testing

Version 4.2 of the APx500 audio test software and a new PDM module with advanced capabilities are available from Audio Precision. This latest software release delivers a series of new features focused on electro-acoustic and production test environments, including customisable sub-sequences, input EQ, and a dedicated production test mode.

Test & Measurement
3rd September 2015
DAQ driver opens door to signal acquisition applications

The release of their newest driver for National Instrument’s LabVIEW software has been announced by Audio Precision. Developed with a broad range of signal acquisition applications in mind, this driver streamlines and simplifies the integration of the APx515 analyser as a robust, high-quality front end to LabVIEW-based measurement environments.

Test & Measurement
15th April 2015
Analyser tests performance of Dante-enabled devices

Support for audio performance testing of Dante-enabled devices is now available with Audio Precision’s APx500 Series analysers and software. The capability aids engineers in verifying the audio performance of their designs as they integrate Dante and strive to meet the growing demand for networked pro audio components, products and systems.

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