Audio Precision has announced availability of v4.2 of its APx500 audio test software, as well as a new PDM module with advanced capabilities.
Capabilities introduced with ne new revision test software are primarily focused on electro-acoustic testing – loudspeakers, headphones and microphones – and production test scenarios. APx’s built-in automation engine, the Sequencer, now supports multiple sequences in a single project and sequence looping. The release also allows the creation of customisable sub-sequences for applications including ‘golden unit’ testing or microphone calibration.
Users testing loudspeakers and microphones can now apply an equalisation curve to an input signal. The input curve can be edited, exported, imported and selectively applied to available input channels.
Addressing the particular needs of manufacturing environments, v4.2 offers a dedicated production test mode. Now, a test system administrator can create device-specific projects then put the system into password-protected production mode. From that point on, system operators have a simplified interface that allows for project selection, test activation and report generation, but does not permit project modification or parameter changes.
PDM-based (Pulse Density Modulation) components are an integral part of audio devices ranging from class-D amplifiers to smartphones and wearable electronics. The new unit enables jitter tolerance testing and supports low-voltage logic levels to meet the evolving needs of developers. Specific enhancements include hardware jitter generation (bit clock and data lines), jitter analysis of the input bit clock, support for logic voltage as low as 0.8V, and greater flexibility in decimation and interpolation ratios.
‘Each new software release highlights the power and versatility of AP’s audio test software and APx Series analysers,’ says Audio Precision CEO, Dave Schmoldt. ‘With v4.2, we’re providing a new, diverse set of capabilities for electro-acoustic and production test applications while maintaining a clean, highly-intuitive user-interface – all provided as a complementary upgrade.’